CN103206935B - A kind of detection method and system of flywheel signal teeth mismachining tolerance - Google Patents
A kind of detection method and system of flywheel signal teeth mismachining tolerance Download PDFInfo
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- CN103206935B CN103206935B CN201310147864.1A CN201310147864A CN103206935B CN 103206935 B CN103206935 B CN 103206935B CN 201310147864 A CN201310147864 A CN 201310147864A CN 103206935 B CN103206935 B CN 103206935B
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Abstract
The invention discloses a kind of detection method of flywheel signal teeth mismachining tolerance, comprise the steps: first to detect each signal teeth on described flywheel and rotate transient speed in the process of at least one circle and the time between every adjacent two signal teeth at described flywheel; Then obtain the acceleration of each signal teeth according to described transient speed and described time, and judge whether the acceleration of described signal teeth is greater than default acceleration, if so, will be defined as error tooth with the signal teeth that meets this condition; If not, detection of end. The method, by realizing simply, easily the detection to flywheel mismachining tolerance to the detection of signal teeth transient speed, not only has stronger operability, and has higher accuracy of detection. The present invention also discloses detection system corresponding to a kind of and above-mentioned detection method, has constructed effect.
Description
Technical field
The present invention relates to automobile technical field, relate in particular to a kind of flywheel signal teeth mismachining toleranceDetection method and system.
Background technology
Flywheel is mounted on the gyroaxis of engine, have the colyliform accumulation of energy compared with large rotating inertiaDevice, the flywheel of engine has two Main Functions.
The first, because automobile engine belongs to the power set of intermittent combustion formula, each cylinder is delivered to songThe energy of axle is not stable and continuous, and the effect of flywheel is exactly to store certain energy, makes songAxle construction has larger rotary inertia, drives whole crankshaft structure to cross upper and lower stop, protectsThe uniformity of inertial rotation and the uniformity of output torque of the rotation of card engine crankshaft, by means ofThe inertia force of rotation itself, helps to overcome resistance to compression pression in when starting cylinder, to maintain short-term superWhile carrying, engine remains in operation.
The second, at the circumferential processing signal tooth of flywheel, and on bell housing installation and measuring parts,Can in engine rotation process, detect the transient speed of each signal teeth, and then obtain and startThe transient speed of machine, used for other control program of engine. But, if flywheel weekTo signal teeth in process, exist error larger, for example, between adjacent two signal teethDistance arrange inhomogeneous, the transient speed collecting can have problems, and causes engineOther control program produces mistake. Therefore, judge the mismachining tolerance size of flywheel signal teeth,It is an important link in engine production process.
As can be seen here, urgently for above-mentioned technical problem, design a kind of flywheel signal teeth processing mistakePoor detection method and detection system, the mismachining tolerance of detection flywheel signal teeth, avoids startingOther control programs of machine impact, and improve the accuracy of engine control.
Summary of the invention
Object of the present invention is for providing a kind of detection method and detection of flywheel signal teeth mismachining toleranceSystem, its concrete which or which signal teeth that can detect flywheel has mismachining tolerance,Be convenient to reprocessing or the maintenance of follow-up flywheel, and avoid other control programs of engine to cause shadowRing, improve the accuracy of engine control.
For solving the problems of the technologies described above, the invention provides a kind of inspection of flywheel signal teeth mismachining toleranceSurvey method, comprises the steps:
1) detect each signal teeth on described flywheel and rotate at described flywheel the mistake of at least one circleTime between transient speed in journey and every adjacent two signal teeth, according to described transient speedObtain the acceleration of each signal teeth with the described time;
2) whether the acceleration that judges each described signal teeth is greater than default acceleration, if so,Enter step 3); If not, enter step 4);
3) will meeting step 2) signal teeth of conditional is defined as error tooth;
4) detection of end.
Preferably, described step 1) at least two circles, detect described transient speed and often adjacentTime between two signal teeth;
Described step 3) be specially:
31) record all steps 2 that meet) tooth number of the signal teeth of conditional;
32) judge whether the difference of the corresponding teeth number of every two adjacent rings equals the signal teeth of flywheelNumber, if so, enters step 33); Enter if not step 4);
33) will meet step 32) corresponding teeth number corresponding signal teeth be recorded as error tooth.
Preferably, described step 1) also comprise before step:
011) undulate quantity of detection flywheel mean speed and Speed of Reaction Wheels;
012) judge whether flywheel mean speed is less than preset rotation speed, and described flywheel on average turnsThe undulate quantity of speed is in preset rotation speed fluctuation range; If so, perform step 1), if not, carry outStep 04);
04) keep current state constant.
Preferably, described step 012) in be judged as YES after, enter step 1) before alsoComprise step:
021) undulate quantity of detection Engine Injection Mass and distributive value;
022) judge whether Engine Injection Mass is greater than default distributive value, and described distributive valueUndulate quantity is in default distributive value fluctuation range; If so, perform step 1), if not, carry out stepRapid 04).
Preferably, described step 022) in be judged as YES after, enter step 1) before alsoComprise step:
031) detect the water temperature of engine and the time that engine has started;
032) whether the water temperature that judges engine is greater than default water temperature, and described engine opensMoving Preset Time, if so, performs step 1), if not, execution step 04).
Above-mentioned detection method is by can be simply, easily to the detection of signal teeth transient speed realThe now detection to flywheel mismachining tolerance, not only has stronger operability, and has higher inspectionSurvey precision.
The present invention also provides a kind of detection system of flywheel signal teeth mismachining tolerance, comprising:
Checkout gear, turns at described flywheel for detection of the each signal teeth on described flywheelTime between transient speed in the process of a few circle and every adjacent two signal teeth;
Controller, is connected with described checkout gear, for according to described transient speed with when describedBetween obtain the acceleration of each signal teeth, judge whether the acceleration of each described signal teeth is greater thanDefault acceleration, and when judged result is when being, sends this signal teeth is defined as to error toothControl command;
Output device, is connected with described controller, for receiving and export the control of described controllerSystem order.
Preferably, described checkout gear for detecting described transient speed and phase at least two circlesTime between adjacent two signal teeth; Described controller is also for recording after described tooth number, thenJudge whether the difference of the corresponding teeth number of every two adjacent rings equals the signal teeth number of flywheel, when sentencingDisconnected result when being, being exported the corresponding teeth number corresponding signal teeth that meets this condition is recorded asThe control command of error tooth.
Preferably, described checkout gear is also average for detection of described flywheel mean speed and flywheelThe undulate quantity of rotating speed; Described controller is also for judging whether flywheel mean speed is less than default turningSpeed, and the undulate quantity of described flywheel mean speed is in preset rotation speed fluctuation range, and when judgementResult is that while being, output starts the control command detecting.
Preferably, described checkout gear is also for detection of the fluctuation of Engine Injection Mass and distributive valueAmount; Described controller is also for judging whether Engine Injection Mass is greater than default distributive value, and instituteState the undulate quantity of distributive value in default distributive value fluctuation range, and when judged result defeated when beingGo out to start the control command detecting.
Preferably, described checkout gear is also after the water temperature and engine start for detection of engineTime; Whether described controller is also greater than default water temperature for the water temperature that judges engine, andDescribed engine has started Preset Time, and when judged result be to be that time output starts the control detectingSystem order.
Because above-mentioned detection method has above-mentioned technique effect, therefore, corresponding with this detection methodDetection system also should there is corresponding technique effect, do not repeat them here.
Brief description of the drawings
Fig. 1 is the FB(flow block) of a kind of detailed description of the invention of detection method provided by the present invention;
Fig. 2 is that flywheel signal teeth is processed abnormal transient speed curve map;
Fig. 3 is the flow chart element of the another kind of detailed description of the invention of detection method provided by the present inventionFigure;
Fig. 4 is the structural representation of a kind of detailed description of the invention of detection system provided by the present inventionFigure.
Wherein, the corresponding relation between Reference numeral and the component names in Fig. 4 is:
Checkout gear 11; Controller 12; Output device 13.
Detailed description of the invention
Core of the present invention is for providing a kind of detection method and detection of flywheel signal teeth mismachining toleranceSystem, whether it is greater than default acceleration by the acceleration that judges signal teeth, should thereby determineWhether signal teeth is error tooth, the detection error of having avoided mismachining tolerance to bring, thus avoidOn the impact of engine control procedures, improve the engine control degree of accuracy.
In order to make those skilled in the art understand better technical scheme of the present invention, knot belowThe present invention is described in further detail to close the drawings and specific embodiments.
Please refer to Fig. 1, a kind of detailed description of the invention that Fig. 1 is detection method provided by the present inventionFB(flow block).
In a kind of detailed description of the invention, as shown in Figure 1, the invention provides a kind of flywheel signalThe detection method of tooth mismachining tolerance, comprises the steps:
S11: detect each signal teeth on flywheel and rotate the wink in the process of at least one circle at flywheelTime time between rotating speed and every adjacent two signal teeth, obtain according to transient speed and above-mentioned timeGet the acceleration of each signal teeth.
Because signal teeth is to be located at the circumferential tooth of flywheel, therefore, only have when flywheel rotate at least oneCircle, can ensure that all signal teeth are all detected, thereby has ensured the comprehensive of detection.
Here can specifically on the housing of flywheel, angular-rate sensor be set, the mistake that flywheel rotatesCheng Zhong, this angular-rate sensor can detect the angle speed of a nearest with it signal teethDegree, along with flywheel rotates a circle, this angular-rate sensor can detect the moment of all signal teethAngular speed. In addition, by the time interval of velocity transducer output signal is determined and is detected oftenThe time of adjacent two signal teeth. Certainly, above-mentioned detection method can also adopt linear velocity sensingDevice detects the linear velocity of each signal teeth.
Particularly, step S11 is according to the angular speed of the signal teeth detecting and sensor inspectionMeasure the time between adjacent two signal teeth, pass through formula:
α=Δ ω/Δ t=2*Pi* (when the instantaneous velocity of the instantaneous velocity-upper tooth of nipper)/(60* two teethBetween time) calculate the angular acceleration of signal teeth.
S12: whether the acceleration that judges each signal teeth is greater than default acceleration, if so, entersStep S13; If not, enter step S14;
When there is not the signal teeth that is processed with error on flywheel, can according to the operation principle of flywheelKnow, follow in the process of bent axle rotation at flywheel, on the rotating speed of all signal teeth should be slowlyThe track of liter or slow decreasing changes. As shown in Figure 2, Fig. 2 is that flywheel signal teeth addsThe transient speed curve map that work is abnormal. In the time that the mismachining tolerance of certain signal teeth is larger, (for example divideCloth is inhomogeneous, and the distance between certain signal teeth and one side signal teeth is greater than and its opposite side letterDistance between number tooth),, in above-mentioned testing process, this signal teeth is with respect to its adjacent letterNumber tooth can produce larger acceleration, and sudden change of acceleration occurs. Hence one can see that, above-mentioned stepsThe sudden change of acceleration that S12 causes by error tooth just distinguishes which or which signal teeth is for addingWork has the signal teeth of error, thereby realizes the accurate detection to error tooth.
It should be noted that, in above-mentioned steps, " acceleration of signal teeth " refers to this signal teethWith respect to the acceleration of a upper signal teeth, " times between every adjacent two signal teeth " refer toBe flywheel rotate process in, every adjacent two signal teeth that checkout gear 11 detects timeBetween. Above-mentioned " default acceleration " can be by the low average acceleration when idle of engineAdd that secure threshold determines, specifically can directly adopt the empirical value obtaining by test of many times.
S13: the signal teeth that meets step S12 conditional is defined as to error tooth;
S14: detection of end.
To sum up, above-mentioned detection method by can be simply to the detection of signal teeth transient speed, sideJust realize the detection to flywheel mismachining tolerance, not only there is stronger operability, and haveHigh accuracy of detection.
Please refer to Fig. 3, the another kind of specific embodiment party that Fig. 3 is detection method provided by the present inventionThe FB(flow block) of formula.
In another kind of detailed description of the invention, as shown in Figure 3, above-mentioned detection method can be concreteComprise:
S21: detect transient speed at least two circles of each signal teeth on flywheel and often adjacentTime between two signal teeth, obtain each signal teeth according to transient speed and above-mentioned timeAcceleration;
S22: whether the acceleration that judges each signal teeth is greater than default acceleration, if so, entersStep S23; If not, enter step S24;
S231: the tooth number that records all signal teeth that meet step S22 conditional;
S232: judge whether the difference of the corresponding teeth number of every two adjacent rings equals the signal teeth of flywheelNumber, if so, enters step S233; Enter if not step S24;
S233: the corresponding teeth number corresponding signal teeth that meets above-mentioned condition is recorded as to errorTooth;
S24: detection of end.
The mechanism that is provided with 60 signal teeth taking 4 stroke 4 Cylinder engines, flywheel is below as example,Specifically introduce the detailed process of above-mentioned detection method:
The first embodiment: if only have a signal teeth to have mismachining tolerance, step S21 on flywheelDetect the transient speed of each signal teeth in 10 working cycles, i.e. camshaft rotation 10 circles,Flywheel rotates 20 circles, and velocity sensor detects in real time each in the processes of flywheel rotation 20 circlesThe transient speed of signal teeth; Step S22 judges that flywheel rotates each signal in 20 circle processesWhether tooth has sudden change of acceleration; Step 231 record flywheel rotate first lap in sudden change of accelerationThe tooth number of signal teeth be that in 21, the second circles, tooth number is that in 81, the three circles, tooth number is 141...,Step S232 judges that the difference of the tooth number of the tooth number circle last with it of each circle is 60, equalsThe number of the signal teeth of flywheel, No. 21 teeth that step S233 records flywheel are error tooth.
The second embodiment: if there are two signal teeth to have mismachining tolerance on flywheel, step S21 andStep S22 is identical with the first embodiment. If step S231 records the first lap that flywheel rotatesThe tooth of the signal teeth of middle sudden change of acceleration number is that in 21,35, the second circles, tooth number is 81,95, theIn three circles tooth number be 141,155..., step S232 judge 21,81,141 often adjacent twoThe difference of tooth number is 60, equals the number of teeth of flywheel, and judges 35,95,155 every adjacent twoThe difference of tooth number is also 60, equals the number of teeth of flywheel, and step S233 records No. 21 of flywheelTooth and No. 35 teeth are error tooth. If step S231 record flywheel rotate first lap in addThe tooth of the signal teeth of velocity jump number is that in 21,35, the second circles, tooth number is 81,93, the three circlesMiddle tooth number is 141,150..., and step S232 judges 21,81,141 every adjacent two teeth numberDifference be 60, equal the number of teeth of flywheel, and judge 35,93,150 every adjacent two teeth numberDifference not all equal 60, be not equal to the number of teeth of flywheel, step S233 records 21 of flywheelNumber tooth is error tooth.
If there is the signal teeth of three or more numbers to have mismachining tolerance on flywheel, it detectedJourney and the second embodiment are similar, do not repeat them here.
From the above-mentioned course of work, this detection method is detecting that sudden change of acceleration determines errorOn the basis of tooth, then the method that detects, examines by multi-turn, guarantee error tooth positionAccuracy, avoids in the time that individual pen detects, by the acceleration that caused by the impact of other extraneous factorsThe corresponding signal teeth of suddenling change thinks it is error tooth by mistake, has further ensured the accurate of testing resultProperty.
It should be noted that, above-mentioned " corresponding teeth number " extremely be before and after position basic correspondingTooth number, for example above-mentioned is in example, " 21,81,141 " are corresponding teeth number, " 35,95,155 "For corresponding teeth number, " 35,93,150 " are corresponding teeth number.
In another kind of detailed description of the invention, above-mentioned detection method is all right before step S21Comprise step:
S2011: the undulate quantity that detects flywheel mean speed and flywheel mean speed;
S2012: judge whether flywheel mean speed is less than preset rotation speed, and flywheel mean speedUndulate quantity in preset rotation speed fluctuation range; If so, perform step S21, if not, carry outStep S204;
S204: keep current state constant.
Like this, ensure that above-mentioned detection method carries out in the time that Speed of Reaction Wheels reaches certain stable state,Ensure the accuracy of testing result, improve the efficiency of detection method. Here " preset rotation speed ", " pre-If fluctuation of speed scope " can specifically set according to the low mean speed when idle of engine,For example, for the engine of 10L～12L type, desired speed can be set as600r/min, is set as 2r/min～5r/min by desired speed fluctuation range.
In further scheme, after above-mentioned detection method is judged as YES in step S2012,Before entering step S21, can also comprise step:
S2021: the undulate quantity that detects Engine Injection Mass and distributive value;
S2022: judge whether Engine Injection Mass is greater than default distributive value, and the ripple of distributive valueMomentum is in default distributive value fluctuation range; If so, perform step S21, if not, in executionState step S204.
Adopt above-mentioned steps, can ensure that above-mentioned detection method reaches one at the distributive value of engineWhile determining stable state, just carry out, further ensure the accuracy of testing result. Here " defaultDistributive value ", " default distributive value fluctuation range " can be according to low flat when idle of engineAll distributive value is specifically set, for example, for the engine of 10L～12L type, can be byPredetermined distributive value is set as 8mg/r, will preset distributive value fluctuation range to be set as-2mg/r～2mg/r。
More specifically, after above-mentioned detection method is judged as YES in step S2022, enter stepBefore rapid S21, can also comprise step:
S2031: detect the water temperature of engine and the time that engine has started;
S2032: whether the water temperature that judges engine is greater than default water temperature, and engine startsTime be greater than Preset Time, if so, perform step S21, if not, carry out above-mentioned steps S204.
Like this, can ensure that above-mentioned detection method has reached highly stable work shape at engineWhen state, just carry out, further ensure the accuracy of testing result. Equally, here, " default waterTemperature ", " Preset Time " can specifically set according to the low average water temperature when idle of engine,For example predetermined water temperature can be set as to 70 DEG C-80 DEG C, Preset Time is set as to 3s.
Please refer to Fig. 4, Fig. 4 is one of flywheel signal teeth error detecting system provided by the present inventionPlant the structural representation of detailed description of the invention.
As shown in Figure 4, in a kind of detailed description of the invention, the present invention also provides a kind of flywheel letterNumber tooth error detecting system, this system comprises checkout gear 11, controller 12 and output device13. Checkout gear 11, rotates at least one circle for detection of the each signal teeth on flywheel at flywheelProcess in transient speed and the time between every adjacent two signal teeth. Controller 12 and inspectionSurvey device 11 and connect, for according to the acceleration of transient speed and the each signal teeth of Time Calculation,Each signal teeth is judged to whether its acceleration is greater than default acceleration, and when judged result be yesTime, the tooth number of all signal teeth that meet this condition is recorded in output, sends this signal teeth is determinedFor the control command of error tooth. Output device 13 is connected with controller 12, also defeated for receivingGo out the control command of described controller 12.
Here checkout gear 11 can comprise the angular-rate sensor of being located on flywheel shell, forIn flywheel rotation process, detect the angular speed of flywheel. Certainly, this checkout gear 11 also can wrapVinculum velocity sensor, for detection of the linear velocity of flywheel.
In another kind of detailed description of the invention, the checkout gear 11 of said detecting system also forIn at least two circles, detect the time between transient speed and adjacent two signal teeth. Controller 12Also for recording after tooth number, judge whether the difference of the corresponding teeth number of every two adjacent rings is signalTooth number, when judged result is when being, all corresponding teeth number institute that output meets above-mentioned condition is rightThe signal teeth of answering is recorded as the control command of error tooth.
In another kind of detailed description of the invention, the checkout gear 11 of said detecting system is also for inspectionSurvey the undulate quantity of flywheel mean speed and flywheel mean speed. Controller 12 is also for judging flywheelWhether mean speed is less than preset rotation speed, and the undulate quantity of flywheel mean speed is at preset rotation speed rippleIn moving scope, and when judged result be the control command that output starts detection while being.
In addition, above-mentioned detection device 11 is also for detection of the fluctuation of Engine Injection Mass and distributive valueAmount. For example, checkout gear 11 can specifically comprise the oil temperature sensor of being located on engine, usesIn detecting distributive value and distributive value undulate quantity. Controller 12 is also for judging that Engine Injection Mass isNoly be greater than default distributive value, and the undulate quantity of distributive value is in default distributive value fluctuation range, andWhen judged result is that while being, output starts the control command detecting.
Further, above-mentioned detection device 11 is also for detection of water temperature and the engine of engineThe time having started. For example, detection can also comprise the water temperature sensing of being located on engine water tankDevice, for detection of the water temperature of engine, can also comprise timer, be set for startMachine synchronously starts, the time having started for detection of engine. Controller 12 is also sent out for judgementWhether the water temperature of motivation is greater than default water temperature, and engine started Preset Time, and when judgementResult is that while being, output starts the control command detecting.
Because above-mentioned detection method has above-mentioned technique effect, therefore, corresponding with this detection methodDetection system also should there is corresponding technique effect, do not repeat them here.
Above to the detection method of a kind of flywheel signal teeth mismachining tolerance provided by the present invention andSystem is described in detail. Apply specific case herein to principle of the present invention and enforcementMode is set forth, and the explanation of above embodiment is just for helping to understand method of the present inventionAnd core concept. It should be pointed out that for those skilled in the art,Do not depart under the prerequisite of the principle of the invention, can also carry out some improvement and modification to the present invention,These improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (8)
1. a detection method for flywheel signal teeth mismachining tolerance, is characterized in that, comprise asLower step:
1) the each signal teeth detecting on described flywheel is rotated at least two mistakes of enclosing at described flywheelTime between transient speed in journey and every adjacent two signal teeth, according to described transient speedObtain the acceleration of each signal teeth with the described time;
2) whether the acceleration that judges each described signal teeth is greater than default acceleration, if so,Enter step 3); If not, enter step 4);
3) will meeting step 2) signal teeth of conditional is defined as error tooth;
4) detection of end;
Described step 3) be specially:
31) record all steps 2 that meet) tooth number of the signal teeth of conditional;
32) judge whether the difference of the corresponding teeth number of every two adjacent rings equals the signal teeth of flywheelNumber, if so, enters step 33); If not, enter step 4);
33) will meet step 32) corresponding teeth number corresponding signal teeth be recorded as error tooth.
2. the detection method of flywheel signal teeth mismachining tolerance according to claim 1, itsBe characterised in that described step 1) also comprise before step:
011) undulate quantity of detection flywheel mean speed and flywheel mean speed;
012) judge whether flywheel mean speed is less than preset rotation speed, and described flywheel on average turnsWhether the undulate quantity of speed is in preset rotation speed fluctuation range; If so, perform step 1), if not,Execution step 04);
04) keep current state constant.
3. the detection method of flywheel signal teeth mismachining tolerance according to claim 2, itsBe characterised in that described step 012) in be judged as YES after, enter step 1) also comprise beforeStep:
021) undulate quantity of detection Engine Injection Mass and distributive value;
022) judge whether Engine Injection Mass is greater than default distributive value, and described distributive valueWhether undulate quantity is in default distributive value fluctuation range; If so, perform step 1), if not, holdRow step 04).
4. the detection method of flywheel signal teeth mismachining tolerance according to claim 3, itsBe characterised in that described step 022) in be judged as YES after, enter step 1) also comprise beforeStep:
031) detect the water temperature of engine and the time that engine has started;
032) whether the water temperature that judges engine is greater than default water temperature, and described engine opensWhether the moving time is greater than Preset Time, if so, performs step 1), if not, execution step 04).
5. a detection system for flywheel signal teeth mismachining tolerance, is characterized in that, comprising:
Checkout gear (11), turns at described flywheel for detection of the each signal teeth on described flywheelTime between transient speed in the process of moving at least two circles and every adjacent two signal teeth;
Controller (12), is connected with described checkout gear (11), for according to described instantaneous turningFast and the described time is obtained the acceleration of each signal teeth, judges the acceleration of each described signal teethWhether degree is greater than default acceleration, and when judged result is when being, sends this signal teeth definiteFor the control command of error tooth;
Output device (13), is connected with described controller, for receiving and export described controlThe control command of device (12);
Described controller (12) is also for recording after described tooth number, then judges every two adjacent ringsThe difference of corresponding teeth number whether equal the signal teeth number of flywheel, when judged result is when being,Output is recorded as the corresponding teeth number corresponding signal teeth that meets this condition the control life of error toothOrder.
6. the detection system of flywheel signal teeth mismachining tolerance according to claim 5, itsBe characterised in that,
Described checkout gear (11) also on average turns for detection of described flywheel mean speed and flywheelThe undulate quantity of speed;
Described controller (12) is also for judging whether flywheel mean speed is less than preset rotation speed,And whether the undulate quantity of described flywheel mean speed in preset rotation speed fluctuation range, and when judgementResult is that while being, output starts the control command detecting.
7. the detection system of flywheel signal teeth mismachining tolerance according to claim 6, itsBe characterised in that,
Described checkout gear (11) is also for detection of the undulate quantity of Engine Injection Mass and distributive value;
Described controller (12) is also for judging whether Engine Injection Mass is greater than default distributive value,And the undulate quantity of described distributive value is whether in default distributive value fluctuation range, and work as judged resultFor being that time output starts the control command detecting.
8. the detection system of flywheel signal teeth mismachining tolerance according to claim 7, itsBe characterised in that,
Described checkout gear (11) has also started for detection of the water temperature of engine and engineTime;
Whether described controller (12) is also greater than default water temperature for the water temperature that judges engine,And whether the time that described engine has started is greater than Preset Time, and when judged result is when beingOutput starts the control command detecting.
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| CN117422673B (en) * | 2023-10-11 | 2024-04-05 | 盐城市日盛机械有限公司 | Flywheel machining defect detection method for flywheel manufacturing |
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| DE4221891A1 (en) * | 1992-07-03 | 1994-01-05 | Audi Ag | Measuring angular errors on transducer wheels for measuring vehicle IC engine speed - measuring time of passage of complete transducer wheel to provide reciprocal of speed, dividing by number of segments, and comparing with actual time for passage of one segment to derive correction factor. |
| US5977765A (en) * | 1997-12-05 | 1999-11-02 | Ford Global Technologies, Inc. | Speed, direction, and acceleration sensor for a rotating shaft having a rotor with teeth having unequal spacing |
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| DE4221891A1 (en) * | 1992-07-03 | 1994-01-05 | Audi Ag | Measuring angular errors on transducer wheels for measuring vehicle IC engine speed - measuring time of passage of complete transducer wheel to provide reciprocal of speed, dividing by number of segments, and comparing with actual time for passage of one segment to derive correction factor. |
| US5977765A (en) * | 1997-12-05 | 1999-11-02 | Ford Global Technologies, Inc. | Speed, direction, and acceleration sensor for a rotating shaft having a rotor with teeth having unequal spacing |
| DE102009037896A1 (en) * | 2009-08-18 | 2011-02-24 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Method for determining geometric errors of actual teeth of 60-2-transmitter wheel arranged on crankshaft of engine, involves comparing calculated tooth pitch with ideal tooth pitch, where errors do not exist with specified correlation |
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