Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2084142 A
Publication typeGrant
Publication dateJun 15, 1937
Filing dateApr 12, 1935
Priority dateApr 12, 1935
Publication numberUS 2084142 A, US 2084142A, US-A-2084142, US2084142 A, US2084142A
InventorsErwin C Horton
Original AssigneeTrico Products Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Suction operated accessory system
US 2084142 A
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

June 15, 1937. E. c. HORTON 2,084,142

SUCTION OPERATED ACCESSORY SYSTEM Filed April 12, 1935 INVENTOR Erwin'Choflon;

NEYS

Patented June 1937 I UNITED s ng SUCTION OPERATED ACCESSORY SYSTEM Erwin 0.. Horton, Hamburg, N. Y., assignor to .Trico Products Corporation, Buffalo, N. Y.

Application April -12, 1935, Serial No. 16,079 2 Claims. (01.123-198) This invention relates to means for producing suction, and has particular reference to means associated with an engine, for example an internal combustion engine, for producing suction which may be utilized for operating devices, such as windshield cleaners on motor vehicles, or for other purposes.

' According to conventional practice the suction used to operate the windshield cleaners and air.

horns of motor vehicles having internal combustion engines is obtained by tapping the intake manifolds or fluid inlet passages of the engines, since the pressure in such manifolds or passages is usually considerably .less than atmospheric.

However, such sub-atmospheric pressure varies from time to time in accordance with the conditions of speed and load of the engine, and the degree of opening of the engine throttle valve; and by reason of the large degree of such variation, this source of suction has been found to be not fully satisfactory.

According to the present invention a tube is extended from the exhaust manifold or passage of the engine to the intake manifold or passage of the engine in such manner that a portion of the exhaust fluid will pass from the exhaust passage into the intake passage, and Venturi means are associated with the tube so that such passing of fluid will effect the production of suction.

0 Since the rate of flow and pressure of fluid in an engine exhaust passage is usually high when the suction influence in the inlet passage is low, and vice versa, the rate of flow of fluid through the 1 tube in the present system is comparatively uniform, and hence the degree of the available suction is likewise comparatively uniform.

These and other objects and advantages of the invention will appear from a perusal of the following description, which is made in accordance with the accompanying drawing, wherein: Fig. 1 is a diagrammaticview of the forward portionof a motor vehicle with the present invention applied thereto;

Fig. 2 is a vertical sectional .view throughthe intake and exhaust manifolds of the vehicle engine shown in Fig. 1;

Fig. 3 is a cross-section taken along line .33 of Fig. 2; and,

Fig. 4 is a. fragmentary sectional view'taken along line 4-4 of Fig. 3.

As shown inFlg. 1, the motor vehicle H) has an internal combustion engine II with a fluid inlet passage including intake manifold i2, and an exhaust passage including exhaust manifold I3 and the connected exhaust pipe It. A windfrom tube mouth l8 of the tube. 10

The tube H, or at least a portion of it, is of Venturi form; that is, it has a restricted throat portion l9 with an aperture 2i extending through the wall thereof into a chamber 22 extending around the tube. Into this chamber 22 15 r the suction conduit l6 opens. 7

During normal operation of the engine the velocity-and pressure of the exhaust gases coming from the engine'- cylinders will force a portion of such gases into the tube I'I. Simultane- 2o ously, a less-than-atmospheric .pressure' maintaining in manifold l2, or the effect of inflowing gases passing the open mouth 23 of the other end of tube II, will effect a withdrawal of fluid i1. through tube I1, by the well known and under;- stood venturic action will effect withdrawal of air from chamber 22 and conduit l6 through aperture 2|. Since the actionof the exhaust gases in forcing themselves into tube 11 will 30 in its tendency to withdraw fluid from the tube, a

and vice versa, ,the quantity and velocity of fluid flow through tube I! will be comparatively uniform, and hence the degree of suction maintaining in chamber 22 likewise will be comparatively uniform and constant.

It will be understood that the dimensions of the portion of tube i'l within'the exhaust mani- 40 fold will be made small enough that excessive back pressure will not build up in the exhaust manifold, and that .the amount of exhaust fluid passed to the engine intake manifold will not materially interfere with operation of the en- 45 gine. It will also. be understood that the him I turi part of tube ll may be placed in portions of the tube outside of the manifold l3, and that the extent of the ends of tube l1 into the mani- The resulting flow of fluid tion engine having a fluid inlet passage end en exhaust fluid passage. 0. Venturi tube including e suction take-ofl.'ssid tube being disposed within the exhaust fluid passa e whereby s portion 5 of the exhaust fluid may pass into the Venturi tube and the remaining exhaust fluid me! pus around the Venturi tube, and a. conduit from the discharge end otthe Venturi tube .to-the fluid inlet passage.

m 2. m eomhination with an'internai eombultion engine havinge.fluidinietxasssitgeemielr hnust maze. theflremalndet of we exhsust' gases passing ubeut the Ventwitube;

IRWIN C. non'rnw

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2757654 *Jan 20, 1955Aug 7, 1956Milton L WhiteFuel economizer
US3492980 *Nov 13, 1967Feb 3, 1970Paul R BeckAir pollution inhibiting means in the form of a fuel recirculating apparatus for an internal combustion engine
US3906914 *Apr 4, 1973Sep 23, 1975James W KirkbrideReduction and control of atmospheric pollutants emitted from gasoline powered internal combustion engines
US5533487 *Jun 23, 1994Jul 9, 1996Navistar International Transportation Corp.Dynamic enhancement of EGR flow in an internal combustion engine
US6959700 *Mar 18, 2004Nov 1, 2005International Engine Intellectual Property Company, LlcFlow deflector for a pipe
US7908859 *Nov 29, 2005Mar 22, 2011Volvo Lastvagnar AbExhaust gas recirculation mixer for a turbo-charged internal combustion engine
EP1329605A1 *Nov 23, 2002Jul 23, 2003J. Eberspächer GmbH & Co. KGExhaust system for an internal combustion engine comprising a flow diverter
Classifications
U.S. Classification123/198.00R, 123/568.11
Cooperative ClassificationF02B67/06