Патент USA US2110314код для вставки
March 8, 1938. R. WISNER 2,110,314 . PUMP FOR INJECTION ENGINES Filed Nov. 29, 1935 2 SheetsQSheet l Il./1lik’) 6 727 Mlswer” W-MQ I March 8, 1938. R. wlsNER 2,110,314 ‘ PUMP FOR INJECTION ENGINES Filed Nov. 29. 1955 2 Sheets—Sheet 2 Patented 's, 1938 I ' 2,110,314 I UNITED STATES ‘PATENT OFFICE rum FOR. INJECTION ENGlNES René Wisner, Paris, France, assignor to Sociétév Anonyme André Citroen, Paris, France, Application November 29, 1935, Serial No. 52,221 ' France December 3, 1934 \ 3 Claims..- (Cl. 103.—41) , This invention relates to improvements in ‘ cylinderf2l during longitudinal movement of'the pumps for injecting liquid vfuel into internal com-1 pull member 3 and thereby varies the‘ angular bustion engines of the type in which the quantity position of the inclined wall 23 to one of the of fuel injected into each cylinder of the engine‘ inlet ports‘ 24. '_ _ ' , 5 for one stroke of. the corresponding piston of the ~ ‘ The pull member 3 ‘is normally urged tothe feed pump is controlled by a pull member. Or- left by a spring; not shown, and ordinarily a dinarily the pull member whether operated man- ?xed stop is provided for limiting the movement ually or automatically to control the output of the pump is associated with a ?xed stop against 10 which the pull member is constantly urged in the direction to adjust the pump for increasedv output. _ of the member 3 and thereby limiting the extent of turning movement of the'piston 22 to deter mine the maximum output of the pump for nor- 10 mal running conditions of the engine. ‘ According to, the present invention, the usual If the ?xed stop is ‘positioned to limit the move- ?xed stop is dispensed with and a movable stop g, merit oi‘ the ‘pull member to the position of maxi- 4 member ‘I is positioned in the guide I for the pull 15 mum output ofr the pump for normal operation of the engine at full power, difficulty is frequent1y experienced in starting the engine. ' ' ' The object of the present invention is td‘pr'ovide a regulating device by which the stop mem- member 3. The stop member 1 is provided with 15 a threaded stem 6v slidably'mounted in a support 4 rigidly connected with the guide I. A spring 5 arranged about the stem 6 is con?ned between the support '4 and the stop member ‘I and -nor-/ 20 her may be manually displaced beyond its posi- ' mally urges the latter to the right in opposition 20 tion of normal maximum output of the pump so as to afford a rich fuel mixture suitable for quick- tothe action of the spring, not shown, ‘acting upon the pull member 3. The normal ‘position ly “starting the engine. of the stop member 1 is determined by a stop nut , , e In the accompanying drawings wherein an ap- 8 ?tted on- the-threaded end of the stem 6 and 25 proved embodiment ‘of the invention is illus- ' engageable with the terminal of the support 4, 25 trated:-— Y , > Figure 1 is an elevation of a pump partly in a lock ‘nut 9 being provided to secure the stop nut in adjusted position. a ' . section and showing the application of the in- ‘ vention thereto, the regulating device occupying The extreme end of the stem'B is provided with a pin l0 ‘engaging in-_a~slot ll, of a lever l2 piv 3 0 its normal position in which the maximum quan- - otally mounted at 13 on‘ an arm‘ I: oLthe-sup- 30 tity of fuelznecess'ary for normal operation of the ‘ enginevat all working speedsis supplied. . Fig. 2 is a ‘view similar to Fig. 1 showing the port 4. The end l5- of the lever 12 is adapted ’ to be connected by a suitable operating .device, not shown, located conveniently near the oper regulating device adjusted to increase the out- ator-of the engine, the operatingdevicebeing 35 put of the pump to facilitate starting of the en- ' capable of retaining the lever 12. in several dif- 35 gine. . v ' iferent positions of adjustment. . . . Fig. 3 is a section on the line 37-3 of Fig. 1. As shown in Fig. 1, the stop member 1 is moved Referring to the drawings in detail, the ml- to the right-under the in?uence of the spring 5 . meral 2| indicates one of the cylinders of the until the‘ stop nut 8 tests against the support ‘,0 pump desienated'generally at 2. the output or r 4 and the movement of the pull member 3 is thus ,40 which is controlled by a pull member 3 in the limited for the adjustment of the pistons 22 for form of a rack connected with the accelerating the normal operation of the engine. -With this pedal of the engine or a regulator which latter adjustment the e?ective ‘stroke of the piston is is ‘not shown but is well known in the art. A designated A in Fig. 1. When it is desired to 45 piston 22 is-mounted in each cylinder 2| and is supply a rich fuel mixture‘for the purpose of 45 adapted during reciprocation to cover and un- starting the engine, the lever I2 is moved to the cover the inlet ports 24 in the cylinder 2|. The ‘position shown in Fig. 2 and the stop member 1' piston 22 is provided with a recess having an in- is displaced to -'the left thereby permitting the clined wall 23 terminating in an’axial passage pull member 3 to follow the stop member and ad-’ . 50 26 adapted to establish communication between just the pistons" to the position to increase the 50 one of the inlet ports 24 and the pressure chamber 25 of the pump cylinder. ‘The teeth otthe pull member 3 mesh with a toothed member 21 connected with the piston 22 whereby the latter l v is turned about its longitudinal axis within the e?ective strokes as‘ indicated at B in Fig. v2. 'WhatI claim is: t - 1 ' ‘ . 1. In a regulating device for a pump for in jecting liquid fuel in- internal combustion engines in which a sliding pull member is constantly 55 1,110,“; .7 - Emma” .2. vm?mzwz w “mm g.mm mmmwwu Wg mwm _ _mm.“ § the a In of magma: ‘be otthclwlnluul mansion’ momma-Ill! .10 m 1111i mm . in: ,. , . . v, rfm hm r 5...? 3m x mind’ theme!’ devloetorlmlor?l .wzmmm? m. mm“ .