CN102323064B - Automatic transmission oil pump monomer reliability testing method - Google Patents
Automatic transmission oil pump monomer reliability testing method Download PDFInfo
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Abstract
The invention relates to an automatic transmission oil pump monomer reliability testing method. The method comprises the following steps of: (1) simulating full throttle acceleration and sliding deceleration of the vehicle and adding to a manual gear shifting process; (2) simulating 10-20% of throttle state of the vehicle and accelerating the vehicle to a certain speed; and then accelerating the vehicle by fully opening the throttle; and finally loosening the throttle for deceleration; and (3) simulating the 45-60% of throttle state of the vehicle and accelerating the vehicle to a certain speed; and then fully loosening the throttle and fully opening the throttle for urgent acceleration so that the gear of the transmission rises and falls in sequence or jumping way; and finally, looseningthe throttle for deceleration, wherein the first step is repeated for 3000 times, the second step is repeated for 1500 times, the third step is repeated for 3000 times and the three steps are alternately carried out according to a certain sequence in the whole testing process according to the frequencies of the three steps in the real vehicle state and the vehicle durability testing method. The automatic transmission oil pump monomer reliability testing method provided by the invention has the advantages of reasonable design, lower comprehensive cost and relatively reduced period; the oil pump bursting flow is monitored in the testing process and the oil pump is decomposed and detected after the testing is finished.
Description
Technical field
The present invention relates to a kind of test method of ATF pump monomer reliability examination.
Background technology
At present, because China's automatic transmission is started late, the test standard that the automatic transmission assembly is relevant with the monomer parts does not almost have.Do not include the relevant durable wire examination method of ATF pump in version " car gage compilation " in 2010.By retrieval, all there is not the correlation test wire examination method both at home and abroad.
Summary of the invention
The objective of the invention is to overcome the weak point that exists in the above-mentioned technology, provide a kind of reasonable in design, the ATF pump monomer reliability test method that integrated cost is lower, the cycle shortens relatively.
In order to achieve the above object, the technical solution used in the present invention is:
(1) long duration test state of cyclic operation
This test method is in order to simulate under the 4 gear transmission real vehicle lift-launch states, travel about 200,000 kilometers, the reliability of transmission oil pump, the formulation of this method is with reference to the durable test method of transmission assembly real vehicle, for accelerated deterioration, the oil temperature control is at 110-120 ℃ high temperature range during test, it is foundation that the control of oil pump top hole pressure respectively keeps off main oil pressure with variator, choosing the central maximal value of each type controls, 1,2 retaining 1MPa, 3,4 retaining 0.8Mpa judge by measuring the oil pump discharge flow whether oil pump performance is normal in the process of the test, and concrete process of the test divided for three steps:
The first step: simulation real vehicle full throttle accelerates and slides the process of slowing down and adding manual shift,
From 700-800 rev/min of neutral idling mode, variator changes to 1 retaining, shift process continues 3 seconds, keep the idling mode 1s time, 100% accelerator open degree accelerates, variator is kept 1 retaining state, use the 4-8s time, input speed is elevated to 6200-6600 rev/min from 700-800 rev/min, variator changes to 2 retainings, shift process continues 3 seconds, input speed is reduced to 3700-4100 rev/min from 6200-6600 rev/min, variator is kept 2 retaining states, use the 5-9s time, input speed is elevated to 6000-6400 rev/min from 3700-4100 rev/min, variator changes to 3 retainings, shift process continues 2 seconds, input speed is reduced to 4100-4500 rev/min from 6000-6400 rev/min, variator is kept 3 retaining states, use the 22-26s time, input speed is elevated to 6100-6500 rev/min from 4100-4500 rev/min, variator changes to 4 retainings, shift process continues 2 seconds, input speed is reduced to 4500-4900 rev/min from 6100-6500 rev/min, keep this rotating speed 30s time, 0% accelerator open degree slows down, variator is kept 4 retaining states, use the 7-11s time, input speed is reduced to 4100-4500 rev/min from 4500-4900 rev/min, variator changes to 3 retainings, shift process continues 2 seconds, input speed is elevated to 5600-6000 rev/min from 4100-4500 rev/min, variator is kept 3 retaining states, use the 11-15s time, input speed is reduced to 3800-4200 rev/min from 5600-6000 rev/min, variator changes to 2 retainings, shift process continues 2 seconds, input speed is elevated to 5700-6100 rev/min from 3800-4200 rev/min, variator is kept 2 retaining states, uses the 20.5-24.5s time, and input speed is reduced to 2000-2400 rev/min from 5700-6100 rev/min, variator changes to 1 retaining, shift process continues 1 second, and input speed is elevated to 2800-3200 rev/min from 2000-2400 rev/min, and variator is kept 1 retaining state, use the 1-5s time, be reduced to idling mode 700-800 rev/min from 2800-3200 rev/min, keep the idling mode 3s time, 100% accelerator open degree accelerates again, repeat once according to above step
Second step: simulation real vehicle 10-20% throttle accelerates to certain speed of a motor vehicle, and throttle wide accelerates then, the process that last pine tar door slows down,
Since 700-800 rev/min of 1 retaining idling mode, the 10-20% accelerator open degree accelerates, variator is kept 1 retaining state, use the 3-7s time, input speed is elevated to 1300-1700 rev/min from 700-800 rev/min, variator changes to 2 retainings, shift process continues 2 seconds, input speed is reduced to 1000-1400 rev/min from 1300-1700 rev/min, variator is kept 2 retaining states, use the 5-9s time, input speed is elevated to 1400-1800 rev/min from 1000-1400 rev/min, variator changes to 3 retainings, shift process continues 2 seconds, input speed is reduced to 1100-1500 rev/min from 1400-1800 rev/min, 100% accelerator open degree accelerates, variator changes to 1 retaining, shift process continues 3 seconds, input speed is elevated to 3800-4200 rev/min from 1100-1500 rev/min, variator is kept 1 retaining state, use the 2-6s time, input speed is elevated to 6200-6600 rev/min from 3800-4200 rev/min, variator changes to 2 retainings, shift process continues 3 seconds, and input speed is reduced to 3800-4200 rev/min from 6200-6600 rev/min, and variator is kept 2 retaining states, use the 1-5s time, input speed is elevated to 5700-6100 rev/min from 3800-4200 rev/min, and 0% accelerator open degree slows down and also slams brake, and variator is kept 2 retaining states, use the 22-26s time, input speed is reduced to 700-800 rev/min from 5700-6100 rev/min, and variator changes to 1 retaining, and shift process continues 3 seconds, input speed is elevated to 800-1200 rev/min from 700-800 rev/min, variator is kept 1 retaining state, uses the 0-4s time, and input speed is reduced to idling mode 700-800 rev/min from 800-1200 rev/min, keep the idling mode 3s time
The 3rd step: simulation real vehicle 45-60% throttle accelerates to certain speed of a motor vehicle, carries out full pine tar door then and the anxious operation of accelerating that gives full throttle, and realizes variator in turn or jump lifting retaining, the process that last pine tar door slows down,
Since 700-800 rev/min of 1 retaining idling mode, the 45-60% accelerator open degree accelerates, variator is kept 1 retaining state, use the 3-7s time, input speed is elevated to 4800-5200 rev/min from 700-800 rev/min, variator changes to 2 retainings, shift process continues 2 seconds, input speed is reduced to 2800-3200 rev/min from 4800-5200 rev/min, variator is kept 2 retaining states, use the 2-6s time, be elevated to 4500-4900 rev/min from 2800-3200 rev/min, variator changes to 3 retainings, shift process continues 2 seconds, input speed is reduced to 3000-3400 rev/min from 4500-4900 rev/min, variator is kept 3 retaining states, use the 1.7-5.7s time, input speed is elevated to 3400-3800 rev/min from 3000-3400 rev/min, 0% accelerator open degree slows down, variator changes to 4 retainings, shift process continues 2 seconds, input speed is reduced to 2000-2400 rev/min from 3400-3800 rev/min, variator is kept 4 retaining states, use the 0-3s time, input speed is reduced to 1800-2200 rev/min from 2000-2400 rev/min, 100% accelerator open degree accelerates, variator changes to 2 retainings, shift process continues 4 seconds, input speed is elevated to 5100-5500 rev/min from 1800-2200 rev/min, variator is kept 2 retaining states, use the 1-5s time, input speed is elevated to 6200-6600 rev/min from 5100-5500 rev/min, variator changes to 3 retainings, shift process continues 3 seconds, input speed is reduced to 4100-4500 rev/min from 6200-6600 rev/min, and variator is kept 3 retaining states, uses the 0-3.5s time, input speed is elevated to 4300-4700 rev/min from 4100-4500 rev/min, 0% accelerator open degree slows down, and variator changes to 4 retainings, and shift process continues 2 seconds, input speed is reduced to 2600-3000 rev/min from 4300-4700 rev/min, keep this rotating speed 1.5s time, 100% accelerator open degree accelerates, and variator changes to 3 retainings, shift process continues 2 seconds, input speed is elevated to 4500-4900 rev/min from 2600-3000 rev/min, and variator is kept 3 retaining states, uses the 24-28s time, input speed is elevated to 6200-6600 rev/min from 4500-4900 rev/min, variator changes to 4 retainings, and shift process continues 2 seconds, and input speed is reduced to 4300-4700 rev/min from 6200-6600 rev/min, 0% accelerator open degree slows down, variator is kept 4 retaining states, uses the 7-11s time, and input speed is reduced to 3800-4200 rev/min from 4300-4700 rev/min, variator changes to 3 retainings, shift process continues 3 seconds, and input speed is elevated to 5600-6000 rev/min from 3800-4200 rev/min, and variator is kept 3 retaining states, use the 23-27s time, input speed is reduced to 2800-3200 rev/min from 5600-6000 rev/min, and variator enters on-position, uses the 3-7s time, make input speed be reduced to 700-800 rev/min of 1 retaining idling mode from 2800-3200 rev/min, the 45-60% accelerator open degree accelerates, and repeats once according to above step
Owing to be that the oil pump monomer is examined, therefore only need change procedure and the rate of change of simulation said process medium speed, and the variation of variator oil pump top hole pressure when hanging into different gear.According to above 3 frequency that under the real vehicle state, use of step and in conjunction with real vehicle long duration test method, determine that the first step repeats 6000 times in the entire test, second step repeated 3000 times, and the 3rd step repeated 6000 times, and three steps were undertaken by setting sequence alternate,
(2) data acquisition
Per 50 hour records are the oil pump discharge flow under the following operating mode once
A) pump speed 600rpm, oil pump top hole pressure 1.1MPa;
B) rotating speed 1000rpm, oil pump top hole pressure 1.6MPa;
C) rotating speed 1500rpm, the oil pump discharge flow under the oil pump top hole pressure 1.6MPa;
D) rotating speed is from 750-6000rpm, and the oil pump top hole pressure is respectively 0.65MPa, 0.85MPa, 1.05MPa, 1.55MPa,
(3) criterion
Must meet the following requirements through the oil pump after the fail-test
A) oil pump discharge flow rate of descent is in 20%;
B) end clearance requires in the 0.02-0.048mm scope;
C) if cavitation erosion is cavitated the some length surface in 2.0mm, face width is in 1.0mm, and the degree of depth is in 1.0mm.
Advantage of the present invention is:
The present invention is reasonable in design, the test integrated cost is lower, cycle shortens relatively, etc. the aspect advantage, at first from the condition of work of oil pump, assembly lift-launch state has all fully been simulated in aspects such as mode of operation, and simulation is the most harsh duty, guarantee that the monomer result of appraisal can demonstrate fully the assembly state, secondly oil pump monomer long duration test consumption of natural resource is less, the examination cost is lower, test the cost that relates at the oil pump test platform and mainly contain power consumption, equipment amortization, a small amount of fuel consumption, if test at the automatic transmission assembly, cost will increase by tens times.Because on the oil pump test platform, stand is monitored curve in real time can fully reflect the testpieces duty, and therefore daily shutdown inspection workload is less, and the project elapsed time such as makes regular check in the process of the test and also reduced, and the bulk testing cycle shortens nearly 1/3.
Embodiment
Below embodiments of the invention are described in further detail.
Embodiment 1,
(1) long duration test state of cyclic operation
This test method is in order to simulate under the 4 gear transmission real vehicle lift-launch states, travel about 200,000 kilometers, the reliability of transmission oil pump, the formulation of this method is with reference to the durable test method of transmission assembly real vehicle, for accelerated deterioration, the oil temperature control is at 110 ℃ high temperature range during test, it is foundation that the control of oil pump top hole pressure respectively keeps off main oil pressure with variator, choosing the central maximal value of each type controls, 1,2 retaining 1MPa, 3,4 retaining 0.8Mpa judge by measuring the oil pump discharge flow whether oil pump performance is normal in the process of the test, and concrete process of the test divided for three steps:
The first step: simulation real vehicle full throttle accelerates and slides the process of slowing down and adding manual shift,
From 700 rev/mins of neutral idling modes, variator changes to 1 retaining, and shift process continues 3 seconds, keeps the idling mode 1s time, 100% accelerator open degree accelerates, variator is kept 1 retaining state, uses the 4s time, and input speed is elevated to 6200 rev/mins from 700 rev/mins, variator changes to 2 retainings, shift process continues 3 seconds, and input speed is reduced to 3700 rev/mins from 6200 rev/mins, and variator is kept 2 retaining states, use the 5s time, input speed is elevated to 6000 rev/mins from 3700 rev/mins, and variator changes to 3 retainings, and shift process continues 2 seconds, input speed is reduced to 4100 rev/mins from 6000 rev/mins, variator is kept 3 retaining states, uses the 22s time, and input speed is elevated to 6100 rev/mins from 4100 rev/mins, variator changes to 4 retainings, shift process continues 2 seconds, and input speed is reduced to 4500 rev/mins from 6100 rev/mins, keeps this rotating speed 30s time, 0% accelerator open degree slows down, variator is kept 4 retaining states, uses the 7s time, and input speed is reduced to 4100 rev/mins from 4500 rev/mins.Variator changes to 3 retainings, shift process continues 2 seconds, input speed is elevated to 5600 rev/mins from 4100 rev/mins, variator is kept 3 retaining states, uses the 11s time, and input speed is reduced to 3800 rev/mins from 5600 rev/mins, variator changes to 2 retainings, shift process continues 2 seconds, and input speed is elevated to 5700 rev/mins from 3800 rev/mins, and variator is kept 2 retaining states, use the 20.5s time, input speed is reduced to 2000 rev/mins from 5700 rev/mins, and variator changes to 1 retaining, and shift process continues 1 second, input speed is elevated to 2800 rev/mins from 2000 rev/mins, variator is kept 1 retaining state, uses the 1s time, is reduced to 700 rev/mins of idling modes from 2800 rev/mins, keep the idling mode 3s time, 100% accelerator open degree accelerates again, repeats once according to above step
Second step: simulation real vehicle 10% throttle accelerates to certain speed of a motor vehicle, and throttle wide accelerates then, the process that last pine tar door slows down,
Since 700 rev/mins of 1 retaining idling modes, 10% accelerator open degree accelerates, variator is kept 1 retaining state, use the 3s time, input speed is elevated to 1300 rev/mins from 700 rev/mins, variator changes to 2 retainings, shift process continues 2 seconds, input speed is reduced to 1000 rev/mins from 1300 rev/mins, variator is kept 2 retaining states, use the 5s time, input speed is elevated to 1400 rev/mins from 1000 rev/mins, variator changes to 3 retainings, shift process continues 2 seconds, input speed is reduced to 1100 rev/mins from 1400 rev/mins, 100% accelerator open degree accelerates, and variator changes to 1 retaining, and shift process continues 3 seconds, input speed is elevated to 3800 rev/mins from 1100 rev/mins, variator is kept 1 retaining state, uses the 2s time, and input speed is elevated to 6200 rev/mins from 3800 rev/mins, variator changes to 2 retainings, shift process continues 3 seconds, and input speed is reduced to 3800 rev/mins from 6200 rev/mins, and variator is kept 2 retaining states, use the 1s time, input speed is elevated to 5700 rev/mins from 3800 rev/mins, and 0% accelerator open degree slows down and also slams brake, and variator is kept 2 retaining states, use the 22s time, input speed is reduced to 700 rev/mins from 5700 rev/mins, and variator changes to 1 retaining, and shift process continues 3 seconds, input speed is elevated to 800 rev/mins from 700 rev/mins, variator is kept 1 retaining state, uses the 1s time, and input speed is reduced to 700 rev/mins of idling modes from 800 rev/mins, keep the idling mode 3s time
The 3rd step: simulation real vehicle 45% throttle accelerates to certain speed of a motor vehicle, carries out full pine tar door then and the anxious operation of accelerating that gives full throttle, and realizes variator in turn or jump lifting retaining, the process that last pine tar door slows down,
Since 700 rev/mins of 1 retaining idling modes, 45% accelerator open degree accelerates, variator is kept 1 retaining state, use the 3s time, input speed is elevated to 4800 rev/mins from 700 rev/mins, variator changes to 2 retainings, shift process continues 2 seconds, input speed is reduced to 2800 rev/mins from 4800 rev/mins, variator is kept 2 retaining states, use the 2s time, be elevated to 4500 rev/mins from 2800 rev/mins, variator changes to 3 retainings, shift process continues 2 seconds, input speed is reduced to 3000 rev/mins from 4500 rev/mins, variator is kept 3 retaining states, use the 1.7s time, input speed is elevated to 3400 rev/mins from 3000 rev/mins, 0% accelerator open degree slows down, variator changes to 4 retainings, shift process continues 2 seconds, input speed is reduced to 2000 rev/mins from 3400 rev/mins, variator is kept 4 retaining states, use the 1s time, input speed is reduced to 1800 rev/mins from 2000 rev/mins, 100% accelerator open degree accelerates, variator changes to 2 retainings, shift process continues 4 seconds, input speed is elevated to 5100-5500 rev/min from 1800 rev/mins, variator is kept 2 retaining states, use the 1s time, input speed is elevated to 6200 rev/mins from 5100-5500 rev/min, variator changes to 3 retainings, shift process continues 3 seconds, input speed is reduced to 4100 rev/mins from 6200 rev/mins, variator is kept 3 retaining states, use the 1s time, input speed is elevated to 4300 rev/mins from 4100 rev/mins, 0%5 is slowed down by the door aperture, variator changes to 4 retainings, shift process continues 2 seconds, input speed is reduced to 2600 rev/mins from 4300 rev/mins, keep this rotating speed 1.5s time, 100% accelerator open degree accelerates, variator changes to 3 retainings, and shift process continues 2 seconds, and input speed is elevated to 4500 rev/mins from 2600 rev/mins, variator is kept 3 retaining states, use the 24s time, input speed is elevated to 6200 rev/mins from 4500 rev/mins, and variator changes to 4 retainings, shift process continues 2 seconds, input speed is reduced to 4300 rev/mins from 6200 rev/mins, and 0% accelerator open degree slows down, and variator is kept 4 retaining states, use the 7s time, input speed is reduced to 3800 rev/mins from 4300 rev/mins, and variator changes to 3 retainings, and shift process continues 3 seconds, input speed is elevated to 5600 rev/mins from 3800 rev/mins, variator is kept 3 retaining states, uses the 23s time, and input speed is reduced to 2800 rev/mins from 5600 rev/mins, variator enters on-position, use the 3s time, make input speed be reduced to 700 rev/mins of 1 retaining idling modes, the acceleration of 45% accelerator open degree from 2800 rev/mins, repeat once according to above step
Owing to be that the oil pump monomer is examined, therefore only need change procedure and the rate of change of simulation said process medium speed, and the variation of variator oil pump top hole pressure when hanging into different gear.According to above 3 frequency that under the real vehicle state, use of step and in conjunction with real vehicle long duration test method, determine that the first step repeats 6000 times in the entire test, second step repeated 3000 times, and the 3rd step repeated 6000 times, and three steps were undertaken by setting sequence alternate,
(2) data acquisition
Per 50 hour records are the oil pump discharge flow under the following operating mode once
A) pump speed 600rpm, oil pump top hole pressure 1.1MPa;
B) rotating speed 1000rpm, oil pump top hole pressure 1.6MPa;
C) rotating speed 1500rpm, the oil pump discharge flow under the oil pump top hole pressure 1.6MPa;
D) rotating speed is from 750-6000rpm, and the oil pump top hole pressure is respectively 0.65MPa, 0.85MPa, 1.05MPa, 1.55MPa,
(3) criterion
Must meet the following requirements through the oil pump after the fail-test
A) oil pump discharge flow rate of descent is in 20%;
B) end clearance requires in the 0.02-0.048mm scope;
C) if cavitation erosion is cavitated the some length surface in 2.0mm, face width is in 1.0mm, and the degree of depth is in 1.0mm.
Embodiment 2,
(1) long duration test state of cyclic operation
This test method is in order to simulate under the 4 gear transmission real vehicle lift-launch states, travel about 200,000 kilometers, the reliability of transmission oil pump, the formulation of this method is with reference to the durable test method of transmission assembly real vehicle, for accelerated deterioration, the oil temperature control is at 120 ℃ high temperature range during test, it is foundation that the control of oil pump top hole pressure respectively keeps off main oil pressure with variator, choosing the central maximal value of each type controls, 1,2 retaining 1MPa, 3,4 retaining 0.8MPa judge by measuring the oil pump discharge flow whether oil pump performance is normal in the process of the test, and concrete process of the test divided for three steps:
The first step: simulation real vehicle full throttle accelerates and slides the process of slowing down and adding manual shift,
From 800 rev/mins of neutral idling modes, variator changes to 1 retaining, shift process continues 3 seconds, keep the idling mode 1s time, 100% accelerator open degree accelerates, variator is kept 1 retaining state, use the 8s time, input speed is elevated to 6600 rev/mins from 800 rev/mins, variator changes to 2 retainings, shift process continues 3 seconds, input speed is reduced to 4100 rev/mins from 6600 rev/mins, variator is kept 2 retaining states, use the 9s time, input speed is elevated to 6400 rev/mins from 4100 rev/mins, variator changes to 3 retainings, shift process continues 2 seconds, input speed is reduced to 4500 rev/mins from 6400 rev/mins, variator is kept 3 retaining states, use the 26s time, input speed is elevated to 6500 rev/mins from 4500 rev/mins, variator changes to 4 retainings, shift process continues 2 seconds, input speed is reduced to 4900 rev/mins from 6500 rev/mins, keep this rotating speed 30s time, 0% accelerator open degree slows down, and variator is kept 4 retaining states, use the 11s time, input speed is reduced to 4500 rev/mins from 4900 rev/mins, and variator changes to 3 retainings, and shift process continues 2 seconds, input speed is elevated to 6000 rev/mins from 4500 rev/mins, variator is kept 3 retaining states, uses the 15s time, and input speed is reduced to 4200 rev/mins from 6000 rev/mins, variator changes to 2 retainings, shift process continues 2 seconds, and input speed is elevated to 6100 rev/mins from 4200 rev/mins, and variator is kept 2 retaining states, use the 24.5s time, input speed is reduced to 2400 rev/mins from 6100 rev/mins, and variator changes to 1 retaining, and shift process continues 1 second, input speed is elevated to 3200 rev/mins from 2400 rev/mins, variator is kept 1 retaining state, uses the 5s time, is reduced to 800 rev/mins of idling modes from 3200 rev/mins, keep the idling mode 3s time, 100% accelerator open degree accelerates again, repeats once according to above step
Second step: simulation real vehicle 20% throttle accelerates to certain speed of a motor vehicle, and throttle wide accelerates then, the process that last pine tar door slows down,
Since 800 rev/mins of 1 retaining idling modes, 20% accelerator open degree accelerates, variator is kept 1 retaining state, use the 7s time, input speed is elevated to 1700 rev/mins from 800 rev/mins, variator changes to 2 retainings, shift process continues 2 seconds, input speed is reduced to 1400 rev/mins from 1700 rev/mins, variator is kept 2 retaining states, use the 9s time, input speed is elevated to 1800 rev/mins from 1400 rev/mins, variator changes to 3 retainings, shift process continues 2 seconds, input speed is reduced to 1500 rev/mins from 1800 rev/mins, 100% accelerator open degree accelerates, and variator changes to 1 retaining, and shift process continues 3 seconds, input speed is elevated to 4200 rev/mins from 1500 rev/mins, variator is kept 1 retaining state, uses the 6s time, and input speed is elevated to 6600 rev/mins from 4200 rev/mins, variator changes to 2 retainings, shift process continues 3 seconds, and input speed is reduced to 4200 rev/mins from 6600 rev/mins, and variator is kept 2 retaining states, use the 5s time, input speed is elevated to 6100 rev/mins from 4200 rev/mins, and 0% accelerator open degree slows down and also slams brake, and variator is kept 2 retaining states, use the 26s time, input speed is reduced to 800 rev/mins from 6100 rev/mins, and variator changes to 1 retaining, and shift process continues 3 seconds, input speed is elevated to 1200 rev/mins from 800 rev/mins, variator is kept 1 retaining state, uses the 4s time, and input speed is reduced to 800 rev/mins of idling modes from 1200 rev/mins, keep the idling mode 3s time
The 3rd step: simulation real vehicle 60% throttle accelerates to certain speed of a motor vehicle, carries out full pine tar door then and the anxious operation of accelerating that gives full throttle, and realizes variator in turn or jump lifting retaining, the process that last pine tar door slows down,
Since 800 rev/mins of 1 retaining idling modes, 60% accelerator open degree accelerates, variator is kept 1 retaining state, use the 7s time, input speed is elevated to 5200 rev/mins from 800 rev/mins, variator changes to 2 retainings, shift process continues 2 seconds, input speed is reduced to 3200 rev/mins from 5200 rev/mins, variator is kept 2 retaining states, use the 6s time, be elevated to 4900 rev/mins from 3200 rev/mins, variator changes to 3 retainings, shift process continues 2 seconds, input speed is reduced to 3400 rev/mins from 4900 rev/mins, variator is kept 3 retaining states, use the 5.7s time, input speed is elevated to 3400-3800 rev/min from 3400 rev/mins, 0% accelerator open degree slows down, variator changes to 4 retainings, shift process continues 2 seconds, input speed is reduced to 2400 rev/mins from 3800 rev/mins, variator is kept 4 retaining states, use the 3s time, input speed is reduced to 2200 rev/mins from 2400 rev/mins, 100% accelerator open degree accelerates, variator changes to 2 retainings, shift process continues 4 seconds, input speed is elevated to 5500 rev/mins from 2200 rev/mins, variator is kept 2 retaining states, use the 5s time, input speed is elevated to 6600 rev/mins from 5500 rev/mins, variator changes to 3 retainings, shift process continues 3 seconds, input speed is reduced to 4500 rev/mins from 6600 rev/mins, variator is kept 3 retaining states, use the 3.5s time, input speed is elevated to 4700 rev/mins from 4500 rev/mins, 0% accelerator open degree slows down, variator changes to 4 retainings, shift process continues 2 seconds, input speed is reduced to 3000 rev/mins from 4700 rev/mins, keep this rotating speed 1.5s time, 100% accelerator open degree accelerates, variator changes to 3 retainings, and shift process continues 2 seconds, and input speed is elevated to 4900 rev/mins from 3000 rev/mins, variator is kept 3 retaining states, use the 28s time, input speed is elevated to 6600 rev/mins from 4900 rev/mins, and variator changes to 4 retainings, shift process continues 2 seconds, input speed is reduced to 4700 rev/mins from 6600 rev/mins, and 0% accelerator open degree slows down, and variator is kept 4 retaining states, use the 11s time, input speed is reduced to 4200 rev/mins from 4700 rev/mins, and variator changes to 3 retainings, and shift process continues 3 seconds, input speed is elevated to 6000 rev/mins from 4200 rev/mins, variator is kept 3 retaining states, uses the 27s time, and input speed is reduced to 3200 rev/mins from 6000 rev/mins, variator enters on-position, use the 7s time, make input speed be reduced to 800 rev/mins of 1 retaining idling modes, the acceleration of 60% accelerator open degree from 3200 rev/mins, repeat once according to above step
Owing to be that the oil pump monomer is examined, therefore only need change procedure and the rate of change of simulation said process medium speed, and the variation of variator oil pump top hole pressure when hanging into different gear.According to above 3 frequency that under the real vehicle state, use of step and in conjunction with real vehicle long duration test method, determine that the first step repeats 6000 times in the entire test, second step repeated 3000 times, and the 3rd step repeated 6000 times, and three steps were undertaken by setting sequence alternate,
(2) data acquisition
Per 50 hour records are the oil pump discharge flow under the following operating mode once
A) pump speed 600rpm, oil pump top hole pressure 1.1MPa;
B) rotating speed 1000rpm, oil pump top hole pressure 1.6MPa;
C) rotating speed 1500rpm, the oil pump discharge flow under the oil pump top hole pressure 1.6MPa;
D) rotating speed is from 750-6000rpm, and the oil pump top hole pressure is respectively 0.65MPa, 0.85MPa, 1.05MPa, 1.55MPa,
(3) criterion
Must meet the following requirements through the oil pump after the fail-test
A) oil pump discharge flow rate of descent is in 20%;
B) end clearance requires in the 0.02-0.048mm scope;
C) if cavitation erosion is cavitated the some length surface in 2.0mm, face width is in 1.0mm, and the degree of depth is in 1.0mm.
Claims (1)
1. ATF pump monomer reliability test method is characterized in that:
(1) long duration test state of cyclic operation
This test method is in order to simulate under the 4 gear transmission real vehicle lift-launch states, travel about 200,000 kilometers, the reliability of transmission oil pump, the formulation of this method is with reference to the durable test method of transmission assembly real vehicle, for accelerated deterioration, the oil temperature control is at 110-120 ℃ high temperature range during test, it is foundation that the control of oil pump top hole pressure respectively keeps off main oil pressure with variator, choosing the central maximal value of each type controls, 1,2 retaining 1MPa, 3,4 retaining 0.8Mpa judge by measuring the oil pump discharge flow whether oil pump performance is normal in the process of the test, and concrete process of the test divided for three steps:
The first step: simulation real vehicle full throttle accelerates and slides the process of slowing down and adding manual shift,
From 700-800 rev/min of neutral idling mode, variator changes to 1 retaining, shift process continues 3 seconds, keep the idling mode 1s time, 100% accelerator open degree accelerates, variator is kept 1 retaining state, use the 4-8s time, input speed is elevated to 6200-6600 rev/min from 700-800 rev/min, variator changes to 2 retainings, shift process continues 3 seconds, input speed is reduced to 3700-4100 rev/min from 6200-6600 rev/min, variator is kept 2 retaining states, use the 5-9s time, input speed is elevated to 6000-6400 rev/min from 3700-4100 rev/min, variator changes to 3 retainings, shift process continues 2 seconds, input speed is reduced to 4100-4500 rev/min from 6000-6400 rev/min, variator is kept 3 retaining states, use the 22-26s time, input speed is elevated to 6100-6500 rev/min from 4100-4500 rev/min, variator changes to 4 retainings, shift process continues 2 seconds, input speed is reduced to 4500-4900 rev/min from 6100-6500 rev/min, keep this rotating speed 30s time, 0% accelerator open degree slows down, variator is kept 4 retaining states, use the 7-11s time, input speed is reduced to 4100-4500 rev/min from 4500-4900 rev/min, variator changes to 3 retainings, shift process continues 2 seconds, input speed is elevated to 5600-6000 rev/min from 4100-4500 rev/min, variator is kept 3 retaining states, use the 11-15s time, input speed is reduced to 3800-4200 rev/min from 5600-6000 rev/min, variator changes to 2 retainings, shift process continues 2 seconds, input speed is elevated to 5700-6100 rev/min from 3800-4200 rev/min, variator is kept 2 retaining states, uses the 20.5-24.5s time, and input speed is reduced to 2000-2400 rev/min from 5700-6100 rev/min, variator changes to 1 retaining, shift process continues 1 second, and input speed is elevated to 2800-3200 rev/min from 2000-2400 rev/min, and variator is kept 1 retaining state, use the 1-5s time, be reduced to idling mode 700-800 rev/min from 2800-3200 rev/min, keep the idling mode 3s time, 100% accelerator open degree accelerates again, repeat once according to above step
Second step: simulation real vehicle 10-20% throttle accelerates to certain speed of a motor vehicle, and throttle wide accelerates then, the process that last pine tar door slows down,
Since 700-800 rev/min of 1 retaining idling mode, the 10-20% accelerator open degree accelerates, variator is kept 1 retaining state, use the 3-7s time, input speed is elevated to 1300-1700 rev/min from 700-800 rev/min, variator changes to 2 retainings, shift process continues 2 seconds, input speed is reduced to 1000-1400 rev/min from 1300-1700 rev/min, variator is kept 2 retaining states, use the 5-9s time, input speed is elevated to 1400-1800 rev/min from 1000-1400 rev/min, variator changes to 3 retainings, shift process continues 2 seconds, input speed is reduced to 1100-1500 rev/min from 1400-1800 rev/min, 100% accelerator open degree accelerates, variator changes to 1 retaining, shift process continues 3 seconds, input speed is elevated to 3800-4200 rev/min from 1100-1500 rev/min, variator is kept 1 retaining state, use the 2-6s time, input speed is elevated to 6200-6600 rev/min from 3800-4200 rev/min, variator changes to 2 retainings, shift process continues 3 seconds, and input speed is reduced to 3800-4200 rev/min from 6200-6600 rev/min, and variator is kept 2 retaining states, use the 1-5s time, input speed is elevated to 5700-6100 rev/min from 3800-4200 rev/min, and 0% accelerator open degree slows down and also slams brake, and variator is kept 2 retaining states, use the 22-26s time, input speed is reduced to 700-800 rev/min from 5700-6100 rev/min, and variator changes to 1 retaining, and shift process continues 3 seconds, input speed is elevated to 800-1200 rev/min from 700-800 rev/min, variator is kept 1 retaining state, uses the 0-4s time, and input speed is reduced to idling mode 700-800 rev/min from 800-1200 rev/min, keep the idling mode 3s time
The 3rd step: simulation real vehicle 45-60% throttle accelerates to certain speed of a motor vehicle, carries out full pine tar door then and the anxious operation of accelerating that gives full throttle, and realizes variator in turn or jump lifting retaining, the process that last pine tar door slows down,
Since 700-800 rev/min of 1 retaining idling mode, the 45-60% accelerator open degree accelerates, variator is kept 1 retaining state, use the 3-7s time, input speed is elevated to 4800-5200 rev/min from 700-800 rev/min, variator changes to 2 retainings, shift process continues 2 seconds, input speed is reduced to 2800-3200 rev/min from 4800-5200 rev/min, variator is kept 2 retaining states, use the 2-6s time, be elevated to 4500-4900 rev/min from 2800-3200 rev/min, variator changes to 3 retainings, shift process continues 2 seconds, input speed is reduced to 3000-3400 rev/min from 4500-4900 rev/min, variator is kept 3 retaining states, use the 1.7-5.7s time, input speed is elevated to 3400-3800 rev/min from 3000-3400 rev/min, 0% accelerator open degree slows down, variator changes to 4 retainings, shift process continues 2 seconds, input speed is reduced to 2000-2400 rev/min from 3400-3800 rev/min, variator is kept 4 retaining states, use the 0-3s time, input speed is reduced to 1800-2200 rev/min from 2000-2400 rev/min, 100% accelerator open degree accelerates, variator changes to 2 retainings, shift process continues 4 seconds, input speed is elevated to 5100-5500 rev/min from 1800-2200 rev/min, variator is kept 2 retaining states, use the 1-5s time, input speed is elevated to 6200-6600 rev/min from 5100-5500 rev/min, variator changes to 3 retainings, shift process continues 3 seconds, input speed is reduced to 4100-4500 rev/min from 6200-6600 rev/min, and variator is kept 3 retaining states, uses the 0-3.5s time, input speed is elevated to 4300-4700 rev/min from 4100-4500 rev/min, 0% accelerator open degree slows down, and variator changes to 4 retainings, and shift process continues 2 seconds, input speed is reduced to 2600-3000 rev/min from 4300-4700 rev/min, keep this rotating speed 1.5s time, 100% accelerator open degree accelerates, and variator changes to 3 retainings, shift process continues 2 seconds, input speed is elevated to 4500-4900 rev/min from 2600-3000 rev/min, and variator is kept 3 retaining states, uses the 24-28s time, input speed is elevated to 6200-6600 rev/min from 4500-4900 rev/min, variator changes to 4 retainings, and shift process continues 2 seconds, and input speed is reduced to 4300-4700 rev/min from 6200-6600 rev/min, 0% accelerator open degree slows down, variator is kept 4 retaining states, uses the 7-11s time, and input speed is reduced to 3800-4200 rev/min from 4300-4700 rev/min, variator changes to 3 retainings, shift process continues 3 seconds, and input speed is elevated to 5600-6000 rev/min from 3800-4200 rev/min, and variator is kept 3 retaining states, use the 23-27s time, input speed is reduced to 2800-3200 rev/min from 5600-6000 rev/min, and variator enters on-position, uses the 3-7s time, make input speed be reduced to 700-800 rev/min of 1 retaining idling mode from 2800-3200 rev/min, the 45-60% accelerator open degree accelerates, and repeats once according to above step
Owing to be that the oil pump monomer is examined, therefore only need change procedure and the rate of change of simulation said process medium speed, and the variation of variator oil pump top hole pressure when hanging into different gear.According to above 3 frequency that under the real vehicle state, use of step and in conjunction with real vehicle long duration test method, determine that the first step repeats 6000 times in the entire test, second step repeated 3000 times, and the 3rd step repeated 6000 times, and three steps were undertaken by setting sequence alternate,
(2) data acquisition
Per 50 hour records are the oil pump discharge flow under the following operating mode once
A) pump speed 600rpm, oil pump top hole pressure 1.1MPa;
B) rotating speed 1000rpm, oil pump top hole pressure 1.6MPa;
C) rotating speed 1500rpm, the oil pump discharge flow under the oil pump top hole pressure 1.6MPa;
D) rotating speed is from 750-6000rpm, and the oil pump top hole pressure is respectively 0.65MPa, 0.85MPa, 1.05MPa, 1.55MPa.
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| CN107966295A (en) * | 2017-11-24 | 2018-04-27 | 重庆长安汽车股份有限公司 | A kind of DCT vehicles gearshift cycle endurance test method |
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| US4125014A (en) * | 1977-08-26 | 1978-11-14 | Chrysler Corporation | Engine oil pump test assembly |
| US5499530A (en) * | 1994-10-03 | 1996-03-19 | Chrysler Corporation | Pneumatic tester for engine oil pumps |
| CN101196185A (en) * | 2007-12-20 | 2008-06-11 | 奇瑞汽车有限公司 | Method of testing self-changing gearbox oil pump assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH11326131A (en) * | 1998-05-21 | 1999-11-26 | Aisin Aw Co Ltd | Automatic transmission testing device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4125014A (en) * | 1977-08-26 | 1978-11-14 | Chrysler Corporation | Engine oil pump test assembly |
| US5499530A (en) * | 1994-10-03 | 1996-03-19 | Chrysler Corporation | Pneumatic tester for engine oil pumps |
| CN101196185A (en) * | 2007-12-20 | 2008-06-11 | 奇瑞汽车有限公司 | Method of testing self-changing gearbox oil pump assembly |
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