BE486902A - - Google Patents

Description

       

   <Desc / Clms Page number 1>
 
 EMI1.1
 II Improvements in fuel supply apparatus for cCL '! 1n.7 "internal stion q.
 EMI1.2
 The present invention relates in a general manner.
 EMI1.3
 rale to fuel control for a combustion engine
 EMI1.4
 internal polycylindrical type.
 EMI1.5
 -The object of the invention is:
 EMI1.6
 A fuel supply apparatus for an internal combustion engine comprising: a co-fuel metering pump; a source of pressurized fuel for the ali1IlGnta-

 <Desc / Clms Page number 2>

 tion of said pump; a distributor comprising a rotary device for delivering to the respective cylinders of the engine the fuel delivered by the pump and another relative device for controlling the flow of fuel from the source to the pump.



     A fuel supply apparatus for an internal combustion engine comprising: a source of pressurized fuel and a metering pump; a distributor serving to control the flow of fuel from the aforementioned source to the pampa and to distribute the fuel delivered by said pump to the respective cylinders, distributor comprising two rotary devices, one of which is arranged to intermittently connect the source above to the pump, while the other is established to intermittently connect said pump to the respective cylinders.



   A fuel supply apparatus for an internal combustion engine comprising: a source of pressure-sense fuel; a variable flow pump for supplying fuel from said source to respective cylinders of the engine; a valve for controlling the flow of fuel from the source to the pump and having a spring which tends to close it; a detent for keeping the valve open; finally, a member serving to move said trigger to disengage it from the valve in order to allow the spring to close the latter and thus prevent the flow of fuel towards the pump.



   A fuel supply apparatus for an internal combustion engine comprising a fuel metering pump for delivering metered amounts of fuel to the cylinders of the engine and comprising a cylinder, a piston, a cam-controlled device for moving the piston in its stroke. flow rate and a source of pressurized fuel serving to supply said pump with fuel, the pressure of the fuel supplied to the pump moving the piston in its intake stroke *
The general object of the invention is the realization of a

 <Desc / Clms Page number 3>

 new fuel supply device for internal combustion engine,

   Apparatus capable of delivering uniform amounts of fuel to the respective cylinders of the engine, established to operate at a relatively high speed and allowing precise control of fuel flow.



   Another important object of the invention is the realization of a fuel supply apparatus of the above-mentioned type in which the fuel flow is controlled by a novel mechanism controlled by the combined action of a regulator. tor and a manual device.



   A more particular object of the invention is the production of fuel supply apparatuses of the aforementioned type in which a fuel dispenser pump sucks fuel from a pressurized fuel source through a distributor and the pump. returns through the same distributor to the respective cylinders, the distributor being of a newly constructed disc type using separate discs for inlet and outlet from the drill pump.



   Another particular object consists in the application, to fuel supply devices of the aforementioned type, of a new mechanism for controlling the fuel metering pump and for varying the stroke of said pump so as to also vary the fuel. amount of fuel supplied to the cylinders and thus control the engine speed.



   A particular object of the invention also consists in a fuel supply apparatus of the aforementioned type, in a new connection between the combined regulator and hand control system and the mechanism serving to vary the stroke of the metering pump from combustible.



   Yet another object is, in a fuel supply apparatus of the aforementioned type, the application of a new "tracking" stop device which can be actuated.

 <Desc / Clms Page number 4>

      automatically and by hand, or simply by hand, depending on the particular use of the engine.



   Other objects and advantages of the invention will become apparent on reading the description which follows and on examining the drawing in which:
Figure 1 is a side elevational view of a fuel supply apparatus constructed in accordance with the invention.



   Figure 2 is a vertical longitudinal section of the apparatus of Figure 1.



   Figure 3 is a partial horizontal section through 3-3 of Figure 2.



   Figure 4 is a partial horizontal section through 4 - 4 of Figure 2.



   Figure 5 is a partial horizontal section through 5 - 5 of Figure 2.



   Figure 6 is a partial horizontal section through 6 - 6 of Figure 2.



   Figure 7 is a vertical cross section through 7-7 of Figure 2.



   Figure 8 is a partial vertical section through 8 - 8 of Figure 7.



   Figure 9 is a detail side elevational view of part of the apparatus shown in Figure 1.



   Figure 10 is a partial vertical section through 10-10 of Figure 9. Figure 11 is a view similar to that of Figure 9, but shows an alternative construction.



   Figure 12 is a partial vertical section through 12 - 12 of Figure 11.



   Figure 13, finally, is a schematic view of the entire fuel supply apparatus.



   A fuel supply apparatus established in accordance with

 <Desc / Clms Page number 5>

   ment to the invention is organized to provide fuel
 EMI5.1
 to the cylinders of a polycylindriqua internal combustion engine, in particular to the C # Elins-Diesel type engine.

   Although the drawing shows the apparatus in its application to a 6-cylinder engine of this type, it goes without saying that the invention
 EMI5.2
 tison is not limited to this particular number of cylinders and can be used with any multi-cylinder engine. The device can also be adapted to an engine of this type, whether it is two-stroke or four-stroke.
 EMI5.3
 DESCRIPTION #SbTIimCM D L'ATPARIL.



  In the preferred mode of construction, the apparatus is
 EMI5.4
 bli to be mounted on the side of the engine and to be controlled by it in such a way that a time-regulated relationship is established between the functioning of the components of the apparatus and the functioning of the engine itself.

   The apparatus is enclosed in a casing comprising two casing elements, one of which is placed on the other, the lower casing element being removed.
 EMI5.5
 signed by 20 (see Figures 1 and 2 and the upper element being designated by 21, P. the lower element 20 is suspended a loading unit designated as a whole by 22.

   
 EMI5.6
 The lower housing element 20 is provided with flanges c5 at its ends, by means of which the assembly can be fixed to the engine.



   In the lower casing member 20 rotates a main drive shaft 24: and a drive connection is established between this shaft and the motor in such a way that the members of the apparatus are driven into the proper adjustment relationship in the time. In the illustrated example,

     the aforementioned drive link consists of a coupling member
 EMI5.7
 25 mounted on shaft 84 to Ce, the lower casing 20 moves.

   7j the barley No. 25 is intended to be connected to another coupling member not shown driven at the speed of the thief's crankshaft. In the example described,

 <Desc / Clms Page number 6>

 
 EMI6.1
 the main drive shaft 24 is driven at the same speed as the engine crankshaft for reasons which will be
 EMI6.2
 explained in more detail below.

   The other end of the shaft z4 is extended by a base 3 iâ '' t r! T lower casing 20 and organized to be connected to a taehymeter-c. When no tachyneter is used, a bzz cap is placed on the opening of the base 28 in which the gas shaft end is housed
 EMI6.3
 In its general aspect, the apparatus which is the subject of the invention
 EMI6.4
 comprises a loading unit which sucks oil into an oil tank 26 (see figure 13) and which sends this oil under pressure to a distributor. The latter is of the type
 EMI6.5
 rotary disc and comprises two sections, one being a sec-
 EMI6.6
 suction disc section, generally designated 37 and the other being a disc discharge section 30.

   Fuel under pressure from the loading unit .o. is supplied intermittently through the suction disc section 87 to a variable flow metering pump referred to in
 EMI6.7
 its assembly by 31. The metering pump is of the cylinder type and
 EMI6.8
 piston and the suction section of the disc is adjusted to
 EMI6.9
 be the fuel during the suction stroke of the pump
 EMI6.10
 d, Q ±: \ 6US6. 01. making the discharge stroke of the ponpe doscu- ses 31, the suction disc section 27 is closed to the current of ', 5': L .S so that they liquid discharged from the stern is led to the section to flow disc 30 which acts to send the valve to the respective cylinders of the engine.



  The quantity of V. ". 'Idaßw lI't3 debited each stroke of the; a Ç1, J Ul ... \ 1 (-:" Qe OOl,:. D - .. 1S .l.ÍJ ..., , U'V! .I- chan V d 4G .. '! = De,. <.;:>] Gp3 dosause 31 is controlled both by hie regulator st by a dwarf device, the regulator acting 7Jo ": Jr the stockings
 EMI6.11
 its speeds and for high speeds, while the con-
 EMI6.12
 1. t trolling at intermediate speeds. , 0 ... control also includes a switch-off device. ,; S'l :: "Vl. T ::: - S32", entered by hand or. Z.lt ''. A ..? (iC-.slâßt by means of which the alïrxn-

 <Desc / Clms Page number 7>

 
 EMI7.1
 of dLt ra3: tLT (zn (t. "1,) 6ut 1> .. oa> s fueling the engine can be 8tr @ interrupted in the event of excessive speed.



  DKIT "S DG # L.-q # tC: CNT: -. 2.J C:? J3USTIBIZ.



  As has already been noted, the loading unit er.



  'a "' 610-mn..tJa é is established to suck oil into the oil tank wu 3t it includes) #peS at low and high pressure which have been represented as gear pumps Thus, as can be seen in Figures 1 and 13, the fuel is withdrawn from the tank 26 through a pipe 58
 EMI7.2
 rolié to a 3S connection provided at the lower extract of the unio.e connection. 3J3? Revised eXGr (8 lower the usi- ty of loading 22.

   The passage of fuel in line 5 Q is controlled by a check valve 34, preferably of the ball type, condT2lt Sa is connected to a pump body 35¯ in which are placed two toothed racks 38¯ constituting the}) OYrlp8 at low pressure. One of the wheels 36 is mounted on an idle shaft 3¯7¯ rotating in the duo pump body 552 while the other wheel 36 is mounted on a shaft of o # lade 4j sf6telrautrs roe 3¯6¯ is half on the shaft coEciaa.de 40 'extending upwards from the pump body bzz and engaging the lower housing insulation 23. At its upper end, the shaft 4J is provided with an angle pinion 41 meshing with an angle wheel 42 mounted on the main drive shaft 24 of the apparatus.



   The fuel delivered by the gear pump at low
 EMI7.3
 pressure vzw is brought through a pipe 4 into a float chamber 44. The fuel level in the float chamber 44 is controlled by a float 45 which actuates a float valve 46 regulating the flow of the in the pipe or passage. 43. The members are arranged in such a way that, when the level of the fuel in the closed float chamber 44
 EMI7.4
 reaches a predetermined value,

   the valve .46 is located / t ### stops the flow of fuel through passage 43. However, the pump 36 continues to act and a bypass valve 47 is provided to allow the discharge of the co-fuel from the 9] th

 <Desc / Clms Page number 8>

 
 EMI8.1
 low pressure 36 to return to the inlet or suction side of said pump without passing into the float chamber 44.



  : the cbstible coming from the float chamber 44 is extracted through a pipe 51¯ by means of the high pressure gear pump formed by toothed wheels 50 housed in the body
 EMI8.2
 pump 35¯ and mounted on shafts S7 and 40. The fuel delivered by the high pressure gear poy - ,, 3e 53 is sent through a conduit 52 through a filter 53 and an overspeed stop valve n 54 which will be described more fully below. From this valve 54, the fuel is led to an annex tank 55 constituted by the widened and elongated passage formed in the lower casing insulation 20, as seen in FIGS. 6, 7 and 10.

   The annex tank 55 is connected to the distributor, more particularly to the suction disc section.
 EMI8.3
 S7 do the latter, to supply fuel to the metering pump 31.



   Under no-load conditions, when the engine. requires very little fuel, the high pressure gear pump 50 tends to build up pressure in line 52 and in adjoining tank 55. To prevent excess
 EMI8.4
 As a presalon in these parts, a pressure regulating valve 56 has been provided which connects the discharge side of the geared stern 50 to the inlet side, whereby a certain quantity of the fuel can circulate in bypass or bypass to through said valve.

   Under these conditions, a constant fuel pressure is maintained inside the tank.
 EMI8.5
 see appendix 55 to feed the dosause pump via the suction disc section 27 of the distributor.



   THE DISTRIBUTOR.



     As already indicated, the distributor is established to intermittently send fuel from
 EMI8.6
 from the annex chamber 55 to the variable flow metering pump 31 during the suction stroke of this pump and to distribute

 <Desc / Clms Page number 9>

 the fuel delivered by said scavenger pump 31 to the respective cylinders, the distributor comprising two sections 27 and 30 with rotating disc for these respective functions. The disc suction section 27 is, of course, only open to the circulation of fluid when the disc distribution section 30 is closed and vice versa.

   Each of the distributor sections comprises a fixed disc and a rotatably driven disc, these two discs being in contact with each other, with passages formed in the corresponding discs to provide the desired communication between them.



   As seen in Figures 2, 6 and 13, the suction disc section 27 has a stationary disc 60 housed in the upper housing member 21, but resting on the upper face of the lower housing member. 20. The upper face of the fixed disc 60 is in contact with a disc 61 driven in rotation.

   Fuel from the adjoining chamber 55 is conducted into the fixed disc 60 through an upwardly extending passage 62 (see Figures 6 and 13) which, in turn, communicates with an angularly shaped passage 63 in the interior of the fixed disc 60. A number of openings 64 arranged in a ring and placed at equal distances from each other and another set of openings 65 extend upward on the upper face of the fixed disc. 60, the openings 64 being located on one side of a diameter of the disc, while the openings 65 are located on the other side.



   The openings 64 are provided to be intermittently brought into coincidence with an annular series of openings 66 (see Figures 2, 5 and 13) formed in the rotating disc 61. The openings 66 communicate with an annular passage 67. of the upper disc or rotating disc 61. The annular passage 67 is preferably formed by cutting a groove in the disc 61 and then closing it by means of a ring 70 with a U-section. The openings 66 are thus all in

 <Desc / Clms Page number 10>

 
 EMI10.1
 comimmioation with each other and intermittently coincide with the apertures 64 of say lower or dis- fixed
 EMI10.2
 that / 50.

   The apertures 66 are also arranged to 0 oy> -Lnel- der with the apertures 65 of the lower disc whenever any of them coincide with the apertures 64, whereby communication between the apertures 64 and 65 occurs. found established through the rotating disc 61 when the openings
 EMI10.3
 corresponding disk tures are in coincidence, ::

  When the openings of the two discs no longer coincide, it goes without saying that no quantity of fuel can circulate from the openings.
 EMI10.4
 openings 64 to openings 65¯ through the rotating disc 61.
The openings 65 of the fixed disc 60 extend downwardly to communicate with an angular-shaped passage 71 which,
 EMI10.5
 in turn, communicates with a U-shaped passage 7 formed in the lower housing element C3. The passage 7¯2 in U communicates with a passage 73 extending upwards (see figures 3 and
 EMI10.6
 15) formed in the upper casing member 1 and comprising an upper part 74 extending horizontally and opening into the upper end of the cylinder of the pump 31.

   A check valve 78 ((see figure 13) can be fitted in passage 73.



   The rotating discs of the two sections of the distributor,
 EMI10.7
 as well as metering device 31, are set up to be controlled, in a time-regulated relationship, with respect to the motor. For driving the rotating discs of the sections of the
 EMI10.8
 distributor, there is provided an angle pinion 7 (see figures 8 and 13) mounted on the main control shaft 34 and meshed! with an angle wheel 78. The latter rotates in ball bearings 77 carried by a part 80 in the form of a sleeve, di-
 EMI10.9
 rigged down, the fixed disc 60.

   The toothed wheel 7¯6 is mounted on a splined shaft 81 extending vertically and upwardly through the fixed disc 60. The shaft 81 is splined over its entire length and is thus connected, for its purpose.

 <Desc / Clms Page number 11>

 
 EMI11.1
 drive, to the rotating disc 6, so that the latter
 EMI11.2
 receives a rotational movement in a relationship, regulated gifts
 EMI11.3
 time, with the motor t would work.



  During the delivery stroke of the â'1¯ ^ v SE: ',. SC.-. 31, the rotating disc 61. has rotated by an amount sufficient for the openings 65 to coincide with the openings 64 and 5, so that no quantity of fuel can be discharged into reverse direction through these openings. the cobustibla from the pump is therefore fed into a probe 8E see Figures S and 13 extending horizontally into the upper housing member SI and making an angle with the conduit 74. The conduit 83 serves. supplying fuel from the SI metering pump to the SC disc section of the distributor. The distributor section 3 ±, conne in the case of the. section P, 7 of suction, disc, includes a. disk 83 secures a rotating disk 84 in contact with each other face to face.

   In the present case, the fixed disc 83 is disposed above the rotating disc 84 and serves as a cap, or cover, to form a 'cT.t: 8 (see FIG. 8) provided above the casing SI and in which is log'3 l3 distributor. w9 <b rotating 84, place immediately below the fixed disc 8, r'Crvi!; 1V 'on its underside a dblC: l # dC, sé i in which is placed a flange forming part of a hub 37. Qt. Last is porto by the upper end of b: - 0 8 to which it was connected by a system of carL-4e ¯, - sc shots? what he is driven by him. To provide a drive connection between the cored 87 and the rotating disc 84, two drive pins 9 l3 were provided; E% .hLtLm (: '.. s f G opposite (see figures S and 4) which extend through l3 hcut from flange ldl9W yt.Î 87 and engage in rotating part 84.



  Furnace Raintonir the rotating disc in engagement with the 0 mbE. .1..cā. also to maintain rotary dyke 61, of the suction section disc 37. at i "¯1S 'c.v? c the fixed disc o ± to which

 <Desc / Clms Page number 12>

 it is associated, a coil spring 91 has been interposed between the two rotating discs 61 and 84, spring bearing in the opposite direction
 EMI12.1
 on these two discs.

   Spring 91 thus forces the rotating disc 61 downwards against the fixed disc 6D and pushes the rotating disc 84 upwards against the fixed disc 83 so as to prevent fuel leakage between the contact faces.
 EMI12.2
 corresponding pairs of disks. Since the two rotating discs 61 and 84 are both driven by the splined shaft 81, the spring 91 rotates with these two discs.

   In one particular organization shown in Figure 2 of the drawing, the spring 91 bears, by its upper end, against the flange of the hub 87, while its lower end is in-
 EMI12.3
 gated in a groove made in the ring 70 of the rotating disc 61.

   The rotating discs 84 and 61 may be housed in a sleeve 88 which fits into the cavity 85 of the upper housing member 21.
 EMI12.4
 for the distribution of the fuel delivered by the metering scale 31, it must be noted that at each delivery stroke of the metering pump, a metered quantity of fuel must be supplied to one of the cylinders of the engine, according to what is determined by the disc distributor section 30.



  1 ':,. To this end, the passage 82 for the delivery of the dosing pump 31 comprises at its outer end a part directed upwards and communicating with a passage 92 in an inverted U-shape.
 EMI12.5
 formed in the fixed disc 83 (see Figures 2, 3 and 15). One of the U-shaped passage arms ¯9J3 is housed in the center of the fixed disc 83 and is arranged to coincide with an opening 93
 EMI12.6
 provided in the upper face of the rotating disc 84. The opening g3 communicates with the passage 94 extending radially in the rotating disc 84 and this passage has at its outer end an opening 95 extending upwardly.



   By the effect of the rotation of the disc 84, the opening 95¯ is successively brought into coincidence with an annular series

 <Desc / Clms Page number 13>

 
 EMI13.1
 vertical passages 96 provided in the fixed disc 83. There is a passage 96 for each cylinder of the engine and these passages, at their upper end, are eccentrically widened, as shown in 97, to receive a pipe fitting
 EMI13.2
 rie 1qu for the adaptation of law tubes going to the fuel injectors for the respective cylinders of the engine.



   The rotation of the rotating disc 84 is adjusted so as to bring the opening 95 into coincidence with one of the passages 96 during each discharge stroke of the metering pump 31,
 EMI13.3
 whereby fuel is supplied to the respective cylinders of the engine.

   Such a coincidence of the opening 95 with the one
 EMI13.4
 of the passages 9C occurs at a time when the openings 86 of the. lower rotating disc 63. no longer coincide with
 EMI13.5
 the openings 64z and 65 of the lower fixed disc 63. The fuel is thus taken intermittently from the drilling pump 31 and sent to the respective cylinders of the engine.



   For priming the engine, a priming pump is provided.
 EMI13.6
 cement 98 (see figure 15). This pump comprises a conduit 99 which connects it to the fuel tank 26 so that it can extract the fuel directly from this tank.
 EMI13.7
 



  In the present case, the pipe 99 is connected to the connector 133 placed under the loading unit 22. The discharge side of the priming pipe 98 is connected to the pipe 5S going to the zen filter in which the pump delivers at high speed. pressure. The fuel from the priming pump 98 is thus pumped through
 EMI13.8
 the filter 53 and the valve 54 in the annex chamber 55.

   A line or passage 13 starts from the latter and is connected to passage 73 going to the bzz teller pump. A hand-operated priming valve ID9 controls the passage of fluid in the branch line 108. such that when the valve 109 is open, the fuel supplied by the priming pump 98 can be discharged into the suction disc section 27 of the distributor through the passage 72, as well as into the pump

 <Desc / Clms Page number 14>

 metering unit 31 and in the disc discharge section 30.
 EMI14.1
 THE PQl'5 DQSSUSE. IF.



   The quantity of fuel supplied to each cylinder by its injector during each driving stroke of the engine is determined by the metering pump 31 for controlling the operating speed of the engine. The stern 31 is therefore of the variable flow type. Although the quantity of fuel delivered by the metering pump can be varied by providing a constant stroke pump with means for letting predetermined portions of the fuel leak during each delivery stroke, the Applicant prefers in the case now use a variable stroke pump to control the amount of fuel delivered during each stroke.

   In the present case, the pump comprises a cylinder 102 (see Figures 2, 7 and 13) mounted in a pocket provided in the upper housing element 21. The cylinder 102 is held in this pocket by means of a nut 103 screwed on. in Crankcase insulation 21 and comprising a shoulder which presses on the lower end of cylinder 102. In the latter works a piston 104 which, in this case, is cup-shaped at its two ends. The piston 104 is biased downward during its suction stroke by the fuel loading pressure.

   The upper end of the cylinder has a portion 106 of reduced diameter and the suction and discharge passages 74 and 82 open into this portion of reduced diameter.



   The piston 102 is controlled during its delivery stroke by a connecting rod 107. To allow the latter to pivot with respect to the piston 104, its upper part, retort as seen at 110, is given the shape of. a ball or ball engaging in a recess formed in the lower end, in the form of a cup, of the piston.

   The connecting rod 107 is driven by the main control shaft 24 by means of a new control device which makes it possible to vary the stroke of the piston.

 <Desc / Clms Page number 15>

 .from zero to a predetermined maximum to vary the amount of fuel supplied to each cylinder and thereby to control engine speed. In general, the connecting rod is controlled by a lever actuated in turn by a cam carried by the main control shaft 24, the connecting rod being adjustable with respect to the lever between a point which coincides with the pivot axis of the lever and for which no movement is communicated to the piston and a point located at a predetermined maximum distance from the pivot axis of the lever for the maximum stroke of the piston.



   Four to obtain this result, we gave the connecting rod 107, at its lower end, the shape of a fork as seen at 111 in Figures 2, 7 and 13, said fork carrying a roller 112 which rotates on its end lower. The roller 112 is arranged to engage with an arcuate plate-shaped rolling path 113 mounted between the legs of a fork-shaped rocker lever 114. Each branch of the forked rocker lever 114 is provided with a journal 115 mounted in a bushing 116 fixed to the lower housing member 20.

   To actuate the oscillating lever 114, there is provided a roller 120 mounted between its branches at its lower end and intended to engage with a cam 121 formed on the main drive shaft 24. for a four-stroke engine. wherein fuel is to be delivered to each cylinder for each revolution of said engine, cam 121 has a number of bosses equal to half the number of cylinders, with the main drive shaft 24 rotating at the same speed as the engine .

   In this case, the device is shown in its adaptation to. operation of a four-stroke six-cylinder engine and the cam 121 therefore comprises three bosses for controlling the oscillating lever 114. The roller 120 is kept in contact with the cam 121 by means of a spring 117 s' pressing on one side against a member 118 forming a seat and carried by the

 <Desc / Clms Page number 16>

 
 EMI16.1
 swinging lever arm 114 and, on the other side, against my cap 119 screwed into an opening in the lower housing element 20.



   Oven vary the stroke of the pump piston 31 in-
 EMI16.2
 be zero and a predetermined maximum, the rolling track 113 extends from a point close to the pivot axis of the journals 115, outwardly, in a perpendicular direction, from a point
 EMI16.3
 generally, to the connecting rod 107.

   The roller 112 rotating in the connecting rod 107 can be adjusted along the raceway 113 from a point where its axis coincides with the axis of the journals 115 (for zero fuel flow since, at this point, no movement of reciprocating action is printed on piston 1Q4)
 EMI16.4
 up to a point close to the other end of the bearing track 113 (where the fuel flow has its maximum value).
 EMI16.5
 Oven to limit such an adjustment of the roller 113, the oscillating lever 114 carries two stops with which the roller 112 can engage, each stop comprising a bar mounted between the
 EMI16.6
 swing lever arm 114.

   as in the present case, when the roller 112 is moved inwards and towards the axis of the
 EMI16.7
 rillons bzz5, its position coincides with such an axis and is limited by a tubular member 122 (not shown) carried by a bar
 EMI16.8
 mounted in the two swinging lever arms 114.

   For the position of maximum fuel flow of the roller 112, the stopper comprises a collared tube 13 mounted on a bar passing through the arms of the rocking lever 114, the roller 118 being able to engage with the collet. of tube 123 in the desired fuel flow position. Under these conditions, by moving the ga-
 EMI16.9
 let 112 between its limit positions, it is possible to vary between zero and a maximum the stroke of the piston 134. and, consequently, the quantity of fuel delivered by the metering pump 31.
 EMI16.10
 C (J1: TTiO ::: L DU DD? 2 'DJ COMBUSTIBLE: ;; / 3 L .. ::> J! ,, -? ":; DOS: U8 31.



  COIL2S we will indicate above, the c% tr09> 3 of the quantity of fuel delivered at each stroke of the metering pump 31

 <Desc / Clms Page number 17>

 
 EMI17.1
 is provided by a combined regulator and manual control system. ; -J8 regulator, designated as a whole by 184 in FIGS. 2 and II-), comprises a control shaft --il5 extending vertically and 16xtréY: the upper part of which is movable a collar 126 which can be moved vertically
 EMI17.2
 ment under the action of the regulator.
 EMI17.3
 



  The collar 136 does not rotate with the control shaft 185 of the governor, but rotates on the latter by means of a ball bearing 127. on diametrically opposite points of the collar 126 are mounted two blocks 130 s' engaging in the branches of a Strier 151 (see Figures 7 and 13). 7/3 sort is rigidly connected to an oscillating shaft 158 disposed at the upper part of the upper casing 31.: oscillating shaft 132 also carries an intermediate lever 133 to which is connected an extendable rod 134 connected to its turn to a main control lever 135.

   The latter is supported, from
 EMI17.4
 so as to be able to pivot, by an eccentric 136 adjustable to
 EMI17.5
 the dwarf which will be described more fully below, in turn, the main control lever is connected by a blellette 137 to the connecting rod 107, the connecting rod being substantially perpendicular.
 EMI17.6
 cular to said connecting rod in such a way that, when moving
 EMI17.7
 of pivoting of the main control lever bzz: '2, the connecting rod 137 pivots around its ball joint with the piston f4 to move the roller Il ?. along the US raceway.



  In normal engine operation, assuming that the manual control has been set for a predetermined load, when the engine exceeds a predetermined maximum speed, clamp 126 is pulled down on shaft 135 and made. pivot the caliper 1S1 and the pivot shaft 132.

   This, in turn, rotates the lever 133 which, through the link 34, operates the main control lever 1S5 to
 EMI17.8
 rotate the connecting rod to the left (in relation to the figure
 EMI17.9
 7), so that its roller 112 moves towards the ase

 <Desc / Clms Page number 18>

      swing lever 114. Such adjustment of connecting rod 107 reduces piston stroke, since roller 112 is moved toward the pivot axis of swing lever 114, and less fuel is thus supplied to the cylinders. .

   If the engine speed drops below the predetermined maximum, collar 126 moves upward on governor shaft 125 and operates the control mechanism in the reverse direction, which has the effect of moving roller II. ? from the connecting rod 127 outward along the bearing path 113 and increasing the amount of fuel supplied to the cylinders of the engine. After one or two oscillations, the main control lever 135 stabilizes to hold the roller 112 in a set position on the raceway 113, such a position that a constant amount of fuel is supplied to the cylinders and the engine runs smoothly. .



   Under normal conditions, link 134 behaves like a fixed, non-extendable link, but under certain circumstances it is desirable, to prevent damage to other associated members, to allow link 134 to elongate. For example, when a truck equipped with an engine having a fuel control apparatus of the kind described herein is traveling in a steep descent, the manual control eccentric 136 is set to run dry. However, due to the slope, the engine speed may be higher than the normal empty arch speed.

   In such a case, the governor tends to reduce the quantity of fuel supplied to the engine and, by means of the linkage which has just been described, it moves the roller 112 of the connecting rod 107 to engage it with the linkage. stop 112 which is the point where the axis of the roller 112 coincides with the axis of the journals 115 of the oscillating lever 114. If the slope is sufficient to continue to increase the speed of the rater, the governor tends to move the crankshaft even more. far in the same direction. But the pebble 112 cannot

 <Desc / Clms Page number 19>

 
 EMI19.1
 not be moved beyond the zero flow point. ensure that at this point it is in contact with the stop -1 l2-2 of zero fuel flow.

   Under these conditions, the connecting rod 134 can elongate, whereby the rest of the crankshaft will not be damaged or broken. For this purpose, the connecting rod 134 comprises two members 140 and
 EMI19.2
 bzz 6 see Figures 7 and 13) respectively connected to the main control lever 135 and to the lever 133. The member 141 is of tabular shape, while the member 140 takes the form of a plunger fitting into the member tubular 141.

   To prevent
 EMI19.3
 the separation of the two members 140 and z during normal operation, they are connected by a spring 142 screwed at each end to the corresponding members. The spring 142 has a force such that during normal operation of the crankshaft no elongation is allowed, but under the above-mentioned circumstances the spring 142 expands to allow
 EMI19.4
 put to pebble lia to stay in itself. zero fuel flow position against stop 122, while the swing shaft
 EMI19.5
 132 and lever 133 receive a pivoting movement of the regulator.



   The governor 124 comprises two low speed counterweights 143 placed on opposite sides of the drive shaft 125 and two high speed counterweights 144, also placed on opposite sides of the governor shaft 125, but offset.
 EMI19.6
 90 widths compared to low speed 143 counterweights.

   The counterweights 143 and 144 are pivotally mounted on a rotating support 145 carrying the shaft 125. The upper end of the
 EMI19.7
 the shaft 135 is held by a support 128 attached to an opening in the upper housing member 3 with a cover 129 attached to the support 148. The rotatable support 145 is mounted in a ball bearing 146 carried by the shaft. lower end of,
 EMI19.8
 the upper housing element, '9 on its lower end, below the bearing 146, is mounted an angle pinion 147

 <Desc / Clms Page number 20>

 meshing with the angle wheel 42 of the main drive shaft 24.

   As will be recalled, the angle wheel 42 is also used to control the low and high pressure gear pumps of the loading unit 22. The governor was thus driven at high speed. relative predetermined In relation to the motor.



     At its upper end, the rotary support 145 carries a retaining shell 150 the role of which is to limit the outward oscillating movements of the low speed counterweights 143 and also those of the high speed counterweights 144. above, the counterweights 143 and 144 or.% - carry arms 151 directed inwardly and bearing on a portion of a projection 152 forming a flange directed outwardly. collar 152 is slidably mounted on governor shaft 125 and is attached to ball bearings 127 supporting collar 126.

     When pivoted outward under the action of centrifugal force, counterweights 143 and 144 thus tend to move collar 152 downward along shaft 125 to actuate collar 126.

   The downward movement of collar 152 is hampered by a. low speed governor spring 153 bearing against an intermediate collar 154 mounted on the shaft 125 with the intermediate collar 154 beading against a high speed governor spring 155 resting on the rotary support 145. for Lower speeds, the low speed counterweights 143, which are heavier than the high speed counterweights 144, rotate outward under the action of centrifugal force to move the collar 152 downward on the shaft 125 by compressing the low speed spring 153.

   At a predetermined speed, the low speed counterweights 143 engage the retaining shell 150 which prevents them from making a sharp outward movement. the predetermined maximum speed, the high speed counterweights 144 ensure

 <Desc / Clms Page number 21>

   The mechanism controls and, moving outward to lower the collar 152, they compress the high speed spring 155.

   When the engine speed decreases, it is
 EMI21.1
 evident that the springs 153 and 168 relax to move the collar 152 upward and to actuate correspondingly.
 EMI21.2
 laying down the crankshaft controlling the stroke of the piston 4 of the metering pump.
 EMI21.3
 



  The manual control eccentric 158, as will be indicated above, supports the main control lever 135 in such a way that it can pivot and can be adjusted to deter- mine.
 EMI21.4
 undermine the speed at which the governor maintains the rioter.



  The eccentric 136 is formed on a shaft 156 (ifoir figures 3, 7 and 13) mounted so as to be able to turn in the upper housing unit 2 and extending outside thereof to the right of said element. casing (compared to figures 2 and 3). On the outer end of shaft 156 is mounted a lever 157 which can be operated by hand.

     When rotating shaft 156 counterclockwise (relative to Figure 7), eccentric 156 moves the pin axis.
 EMI21.5
 turn the main control lever 135 to the left,

   the connection of the rod 134 with the main control lever 135 behaving in this case as a fulcrum. The lower end of the main control lever 135 therefore swings to the left to move the roller 112 of the connecting rod 107 to its zero fuel flow position. In these con-
 EMI21.6
 ditions, the oscillation G1e;

   y''c 155 by means of the hand control lever 157 reduces the speed of the motor, while the rotation of said shaft 156 in the clockwise direction (with respect to figure 7) moves the motor. roller 112 towards its posi-
 EMI21.7
 maximum speed limit to increase the motor speed. m seen any point of adjustment of lever 157 operated at l ,,;: '';.; '' 1'1, the governor checks whether the engine has speed :: 18:; d.Y1Ulî1 predetermined.

 <Desc / Clms Page number 22>

 
 EMI22.1
 



  The relative movement of shaft 156 and the consequent displacement of eccentric 156 are limited both for maximum speed and for zero speed or stop position. The apparatus also includes means for indicating whether the shaft 156 has been rotated to the idle position of the motor,

   so that one can easily turn
 EMI22.2
 Nudge lever 157 operated by hand to an idle position without having to adjust it precisely each time it is used. these results, the eccentric 133 carries a stop affecting
 EMI22.3
 in the form of a radially extending pin 160 (see Figures 7 and 8).

   To limit the new pivoting of the eccentric 136 to a maximum speed position, a stop constituted by a screw - ', SI has been fitted in the upper element.
 EMI22.4
 eur ds casing 21 on the path of the pin 163 which engages with it in the maximum speed position, The screw 161 thus limits the pivoting movements of the eccentric 136
 EMI22.5
 in a sense. The screw 161 can be adjusted to determine suitable - ,, & 1811t this position which, of course, corresponds to the point where the roller 11 S carried by the connecting rod 107 engages the stop bar at the maximum speed.



  , uar-0., eccentric 1S6 has rotated in the opposite direction to move roller 112 to the zero speed position, pin 160 engages a device in the idle position of the engine. In the present case, such a device comprises an idling lever 162 pivoting at 163 on one of the bearings 116 carrying the journals 115 of the oscillating lever 114. The idling lever 162 extends in a generally vertical direction and its upper end 164 is in the path of pin 160 to engage it in the idle position.

     To determine this position of the lever 162, the lower end of the lever is engaged with a plunger 165 pressed by a spring and having a head

 <Desc / Clms Page number 23>

   spherical 166 which fits into a housing in the lower end of the lever. The plunger 165 pushed by a spring tends
 EMI23.1
 will rotate lever 16 & counterclockwise, in relation to figure 7.

   To prevent the lever 168 from pivoting beyond the point suitable for privately
 EMI23.2
 With the pin 160 at idle speed, a "stopper formed by a screw 167 has been mounted on the lower part of the bearing 116, said screw engaging a protrusion
 EMI23.3
 side 17Q of the lower end of the lever 162. By adjusting the screw 167, the correct position of the idle lever 162 and, therefore, the position in which it engages with the stop pin 160 is determined for idling.



  Hand-operated lever 157 can then be rotated
 EMI23.4
 to rotate the eccentric 136 to the suitable position corresponding to the idling of the engine.



     To stop the flow of fuel to the mo-
 EMI23.5
 by means of the lever 157 actuates by hand, a pivoting movement of the eccentric 136 in an anti-clockwise direction
 EMI23.6
 clockwise (with respect to FIG. 7) beyond the position it occupies forces pin 160 to rotate lever 162 clockwise away from the stop screw 167 to move the plunger 165 pressed by a spring to the left.

   Oven prevent movement of the ex-
 EMI23.7
 centric 156 beyond the position in which the roller 112 is in the zero speed position and in engagement with its stop 188, the end 164 of the lever 152 is provided with a screw 171 intended to engage with a bzz2 block mounted on the bearing 116. 3n adjusting the screw 171 in the upper end 164 of the lever 162, the correct position of the lever corresponding to the zero fuel flow position for the roller 112 is determined.

   The pivotal movement of the eccentric 136 is thus limited between the zero feed position and the maximum feed position with engagement of the stopper 160 and

 <Desc / Clms Page number 24>

 lever 162 at the point corresponding to idling to clearly indicate to the operator when such an idling position is reached.



   "OVERSPEED" STOPPING DEVICE.



   The fuel supply apparatus described herein also includes, among its features, an "overspeed" shut-off device for shutting off the flow of fuel to the engine if the engine reaches excessive speed. The device in question may be controlled automatically and by hand or else be constructed for operation by hand alone depending on the use for which the rater is intended. For example, the combined automatic and manual commando can be used in the case of an engine operating a generator, a locomotive, a mechanical shovel or serving for any marine use.

   on the other hand, when the engine is used on a motor vehicle, an "overspeed" shut-off device intended only for manual control is used since, if the engine reaches excessive speed while the truck is descending a steep hill. slope, it would obviously be undesirable to automatically interrupt the operation of the engine at this time.



  The "overspeed" shutdown device as shown here is organized to produce the closure of the valve 54 placed on the conduit 52 going from the high pressure gear pump 50 to the annex chamber 55.



   The combined automatic and manual controlled overspeed stop device is shown in Figures 2, 9, 10 and 13. To actuate the device and to effect closure of the valve 54, the centrifugal action is used. Thus, retort seen in particular in Figures 2 and 10, a counterweight 175 is mounted in the hub 174 of the angle wheel 42.

   The counterweight 173 is provided with a rod 175 extending diametrically through the part of the shaft 24 which is housed in the hub 174. The end of the rod

 <Desc / Clms Page number 25>

 175 opposite the counterweight 173 is provided with a nut 176 having a flange engaged with a spring 177 disposed around the nut and accommodated in a recess formed in the hub 174 and in the shaft 24. The spring then tightens pulling the counterweight 173 inwards with respect to the shaft 24 and the hub 174.



  When the speed of rotation of the shaft 24 exceeds a predetermined value, the counterweight 173 moves outwards, against the action of the spring 177, under the effect of the centrifugal force generated by this rotation.



   In the vicinity of the shaft 24, at the point where the counterweight 173 is placed, is mounted a detent 180. This is generally T-shaped (see FIG. 10); it is supported by an axis 181 on which it rotates and which is mounted in a support 182 fixed to the face of the lower housing element 30; it is extended through an opening 183 made in said element; one end of the T-shaped head 180 lies in the path of the counterweight 173 with which it engages as it moves outward away from the shaft, causing the pivot to pivot. the trigger around the axis 181.

   The other end of the head of the T is provided with a portion 184 curved laterally and engaging with a shoulder 185 of a nut screwed onto the stem of the valve 54. The valve 54 is biased towards its closed position by a coil spring 186, whereby the trigger normally holds the valve in the open position against the action of the spring 186. Do, when the counterweight 173 engages with the trigger 180 and rotates it about its axis 181, the laterally curved part 184 moves away from the shoulder 185 to allow the spring 186 to close the valve 54.



   When the valve 54 has been closed by the action of the counterweight 173, it remains closed until it is returned by hand to the open position. For this purpose, a plunger 190 is mounted in the support 182 and is biased by a spring

 <Desc / Clms Page number 26>

 
 EMI26.1
 191 which engages it with part 184, s .tc: h: t. t- lensnt, trigger 180.

   The spring 191 thus tends to cause the trigger 180 to pivot towards its normal position where it is again ready to be actuated by the counterweight 175.
 EMI26.2
 given that the valve 54 o. been moved to its closed position, the shoulder 185 was not at this time in a position where the laterally extending portion 184 of the trigger can engage with it.

     Turn open valve 54 and for
 EMI26.3
 bring 1 ep aalee.t 185 into the position of coming into engagement with the trigger, a reset button 192 is provided, a button fixed to the outer end of the valve stem 54. Such a button can be pushed towards outside to allow the arrival
 EMI26.4
 the trigger engages with the shoulder 185, which maintains the valve 54: open.



  We can also release the trigger 18Q of the shoulder 185, to allow the closing of the valve 54, at. means of a com z.ce aelle. 6 To this end, the intermediate part of the T-shaped trigger 180 adjacent to the pivot axis 181 is provided with a lug 193 with which the
 EMI26.5
 boss 194 of a sent-circular cam provided on the end of a member 195 mounted, so as to be able to turn, in the support 188. at its end, the member 195 carries a lever 1S6 capable of tô c'tôt .. ## to the and by means of which one can rotate said member 195.

   The free end of the lever 196 is organized to be connected to a cable by means of which it is possible
 EMI26.6
 cosnander her. During the rotation of the member 195, the cam boss 194, by its coming into engagement with the lug 1, causes a pivoting movement of the trigger 180 author of its pivot axis 181 having the effect of releasing the trigger. trigger of 1 '185. Or- can thus perform the closing manually.
 EMI26.7
 of the valve 54.

   The valve 5 and the bzz trigger are replaced in the manner described above.



  7c stop device of "52't: t S which can be

 <Desc / Clms Page number 27>

   Hand-held only and intended for use on trucks is shown in Figures 11 and 12. In this case,
 EMI27.1
 the valve. 5 is provided with IfÓcrot'- c, 0111:;. Jortant the shoulder 185 and the button bzz3 for replacing the rod. In this case, the trigger includes a plunger 200 forming an angle with the valve stem and biased by a spring which tends to engage the shoulder 185 with it.

   The plunger is mounted so as to be able to slide in a support 202 and
 EMI27.2
 it extends outside it so that its external tr0- mity can be connected to a hand control cable or other analogous device. After the plunger 300 has been actuated to disengage it from the shoulder 185, the valve
 EMI27.3
 54 actuated by the spring closes under the action of the latter. On putting it back in place, the spring 201 pushes the Plunger 2J3 inwards and towards 1 r will shoulder 185 and, as soon as it cloots, the button is pulled.

   to open the valve 54, the plunger 2jJ comes back into engagement with the shoulder 185 and maintains the valve in its position (p 0'J.V8 rture. lGV :::; ';: jDIa'r.rTS. le) A engine fuel supply device
 EMI27.4
 internal combustion, comprising a pump of combustible material, a source of pressurized fuel for supplying said pump, and a distributor comprising a rotary device for delivering to the respective cylinders of the rater.
 EMI27.5
 fuel delivered by said P9y2,

   and another rotary device for controlling the flow of fuel from said source


    

Claims (1)

EMI27.6 to said I) O '"" lpe. z. ) An apparatus according to claim 1 wherein said distributor comprises two rotary devices each comprising a fixed disk and a rotating disk corm.al1.dA, one of said devices controlling the flow of fuel from said source to said pump , and the other of said devices is suitable for distributing to the respective cylinders of the rater the <Desc / Clms Page number 28> fuel delivered by said pump. 3.) An apparatus according to either of claims 1 and 2, wherein said distributor comprises two rotary devices, each comprising a fixed disc and a controlled rotary disc, face to face with respect to the one. another, one of said devices having its fixed disc provided with a passage connected to said pump and other passages adapted to be connected to the respective cylinders of the engine, and its controlled disc provided. a passage connecting the passages of the pump to the passages of the respective cylinder, and the other of said devices having its fixed disc provided with two passages connected respectively to said source and to said pump and its controlled disc provided with a passage serving to intermittently connect the two passages of the last mentioned fixed disc. 4.) An apparatus according to claim 1, wherein said distributor comprises two rotary devices, one of said devices being connected to the pump and to the engine cylinders for distribution to the respective cylinders of the fuel. delivered by said pump, the other of said devices comprising a fixed disc and a controlled rotating disc, in face to face contact, said fixed disc having two passages respectively connected to said source and to said pump and a certain number of 'openings extending from said passages to its contact face, said controlled disc having an annular passage and a number of openings extending from there to its contacting face and arranged to successively and intermittently coincide with the openings of the fixed disc to intermittently connect said source to said pump. 5.) A fuel supply apparatus for an internal combustion engine comprising a source of pressurized fuel and a metering pump, a distributor for controlling the flow of fuel from said source to said pump and for distributing the fuel delivered by said pump. to the cylinders <Desc / Clms Page number 29> respective ones, and comprising two rotating devices, said devices being adapted, for intermittently connecting said source to said pump and the other of said devices being adapted to intermittently connecting said pump to the respective cylinders. 6.) An apparatus according to claim 5, wherein said metering pump is a reciprocating metering pump. 7.) An apparatus according to claims 5 and 6, wherein said distributor comprises two rotary devices operating in time-regulated relationship with said pump, one of said devices having passages connected to said source and to said. pump and arranged so that during the rotation of the device, they are pooled.! cation to each suction stroke of the pump, the other of said devices having passages connected to said pumpa and to the respective cylinders, the passage connected to the pump being arranged so that during the rotation of the device, it is put. successively in communication with the passages going to the respective cylinders during the delivery strokes of said ponpe. 8.) An apparatus according to either of claims 5 and 7, comprising a common control for said two devices in order to operate said devices in a time-regulated relationship with respect to one another. the other. 9.) An apparatus according to either of claims 5 and 7, wherein each of said devices comprises a fixed disc and a rotating disc, face to face, in contact with each other, a common control member being provided to drive the rotating discs of said two devices. 10.) An apparatus according to either of claims 8 and 9, comprising a drive shaft driven in rotation, passing through one of said devices and extending to the other of said devices, and connected to the rotating disks. of said two devices. <Desc / Clms Page number 30> II.) An apparatus according to any one of the preceding claims comprising a metering pump, a distributor comprising two fixed discs mounted in concentric relation and spaces from each other, two rotating discs interposed between said fixed discs, concentrically to these and in relation to one another, a drive shaft passing through one of said fixed discs and connected to said two rotating discs, anda spring interposed between them and pressing against said rotating discs to keep them in face to face contact with the respective fixed discs, one of said fixed discs and the rotary disc associated therewith, having passages arranged to connect, during the rotation of said shaft, intermittently said source with said stern, and the other of said fixed discs and the rotating disc associated therewith having passages for intermittently connecting said pump with the respective cylinders. 12.) An apparatus according to claim 11 comprising a splined shaft over its entire length and having a watch wheel at one of its ends, said shaft passing through one of said fixed discs and the rotating disc which is associated therewith. cié and being connected to the latter, the other end of said shaft being connected to the other rotating disc, and a coil spring extending around said shaft and bearing at its respective ends against said rotating discs to hold them face to face in tale and with the respective fixed discs. 13.) An apparatus for supplying fuel for an internal combustion engine, comprising a metering pump for delivering metered quantities of fuel to the cylinders of the fuel pump and comprising a cylinder and a piston with variable stroke, a connecting rod for controlling said piston. , a mechanically controlled oscillating lever to actuate said connecting rod and a member making it possible to perform a relative adjustment between said connecting rod <Desc / Clms Page number 31> and said rocker lever for varying the magnitude of the movement of said connecting rod effected by said rocker lever thereby varying the amount of fuel delivered by said each stroke. 14.) An apparatus according to claim 13, wherein said swing lever is mechanically controlled, engages said connecting rod to control the piston, and said member governs the point of contact of said swing lever and the connecting rod to vary the speed. stroke of the piston, and thus vary the quantity of fuel delivered by said pump at each stroke. 15.) A fuel supply device for an internal combustion engine, comprising a variable-stroke metering pump comprising a piston and a cylinder, a connecting rod articulated to said piston, an articulated oscillating lever controlled by cam, said connecting rod being actuated along the pivot axis of said oscillating lever and being able to be adjusted to approach or move away from it in order to vary the stroke of said piston, and a member connected to said connecting rod for the adjustment of said connecting rod by moving towards or away from said pivot axis. 16.) An apparatus according to any one of claims 13, 14 and 15, wherein said member is connected to said connecting rod between its ends to move the connecting rod to and away from the pivot axis of said rocker lever to effect. varying the amplitude of the movement of the connecting rod effected by said oscillating lever, and thus varying the quantity of fuel from said pump at each stroke. 17.) An apparatus according to any one of claims 13, 14, 15 and 16, wherein said connecting rod has one end thereof hinged to said piston and a. roller at its other end and said pivotally mounted, mechanically controlled rocking lever has a track extending from an adjacent point <Desc / Clms Page number 32> to the pivot axis of the oscillating lever, outwardly thereof and engaging said roller to control the connecting rod. la.) An apparatus according to claim 17 comprising soft stops carried by said oscillating lever at the ends of said rolling track, for limiting the movement of said roller between a position in which the axis of said roller coincides with the pivot axis of the rocking lever and a position EMI32.1 wherein said roller is at a predetermined distance from said pivot axis to allow variation in piston stroke between zero and a predetermined maximum. EMI32.2 19.) An apparatus according to Xl y iJ.}) To which of the preceding claims 13 to 18, comprising a connecting rod back to said connecting rod to move said connecting rod relative to said oscillating lever to vary the stroke of the piston, said EMI32.3 rod extending laferalonent to said rod, and a corr-ianào néc8.- .5'î "-. connected to said rod to move Icngi- killedar! c ,: ', lel1t the latter and thereby to move said connecting rod relative to said rocking lever. EMI32.4 HO. } An apparatus according to claim 19 comprising, -. '.0 source of fuel under pressure, to provide fuel. at the metering stern, the fuel pressure on the piston maintaining the latter in engagement with said connecting rod and now EMI32.5 the praroieï- roller engaged with said che-c1.ln ds bearing, and a spring S, '7pL? Zrâ.l' against said lever oscillated to dwarf the second roller in engagement with said come. 21.) An apparatus according to any of the claims EMI32.6 previous tions 12 to 20, cor-taking a metering pospe to deliver metered quantities of con0-ustibls to the cylinders of no t on and comprising a cylinder and a variable stroke piston, a connecting rod having one of its ends articulated to said piston and a roller at its other end, an oscillating lever i01: 1 ', 18 of two spaced ears, journals starting from these arms - Day <Desc / Clms Page number 33> support the swing lever by allowing it to pivot, EMI33.1 bearing clienin for said roller r :::. m.t'1 between said arms and starting from a point adjacent to the axis of the! ivotr :: C61: t of said journals towards the outside of ceuis-oi, a roller engaged with a cane and:! 9 U: between said arms, a controlled cam. ': 1808, - nically and engaging with said nentiosné roller in lastly, to make said lever oscillate, two stack stops between said arms at the ends of said rolling track to limit the movement of the roller mentioned in the first place, between a position in which its axis coincides with the axis of said journals and a position in which said EMI33.2 roller was at a distance yrdteTT.n06 Ci ..- tC "siC 'from said journals, and a member connected to said connecting rod between its ends and extending laterally thereto to move the roller first mentioned along said rolling path entered said ridges to vary between zero and one. EMI33.3 4! ÊSt '¯ zi'2 prod4ternln4 the quantity of fuel delivered by the pump at each stroke. S8.) A fuel alinator for an internal combustion engine, comprising a variable flow back-pump EMI33.4 able to provide fuel to. refractor cylinders, one. nie- C9C'vJSe1 blvG6 ,, de control- for said ponpe comprising a regulator adapted to be co-controlled by the engine, an oscillating shaft adapted to be turned by the action of the regulator, a lever carried by said oscillating shaft, a second lever, a connecting rod connecting said levers, and a connecting rod connected to said lever and to the pump to vary the flow of the latter. EMI33.5 23.) An apparatus according to claim S8, comprising a shaft controlled by the motor, a Bonté collar on said shaft, so as to be able to move along the shaft under the action of the governor, a oscillating shaft, a caliper riorit4l on said oscillating shaft and engaging said collar for <Desc / Clms Page number 34> -'air turning said oscillating shaft as a result of the movement of said collar, a lever carried by said oscillating shaft, a second lever, a link connecting said levers, and a link connecting to said second lever and to the pump for vary the flow rate thereof. 24.) An apparatus according to either of claims 22 and 23, comprising an extendable link connecting said levers, said extendable link normally having a fixed length but being able to extend when the control mechanism has reduce the pump output to zero and the regulator tends to move the control mechanism more in the same direction. 25.) An apparatus as claimed in claim 24, wherein said extendable link comprises two end pieces and a coil spring connecting said end pieces, said spring having sufficient force to resist extension during operation. normal of the engine, but being adapted to be able to be lengthened by the action of the regulator when the flow of the stern is reduced to zero and the regulator tends to move the control mechanism more in the same direction. 26.) A fuel supply apparatus for an internal combustion engine comprising a variable-stroke metering pump for supplying fuel to the cylinders of the engine, a mechanism controlled by the engine for operating said pump and having adjustable devices. to vary the stroke of the pump, a regulator controlled by the motor, and a control mechanism connected to said adjustable devices and controlled by said regulator to vary the stroke of the pump, said control mechanism comprising a rod of variable length having a fixed length during normal operation of the rater but which may vary in length when the stroke of the pump is reduced to zero under the action of the governor and the speed of the motor tends to oblige the regulator to continue <Desc / Clms Page number 35> act in the sense marl. 27.) An apparatus according to claim 26, having a stop for limiting the adjustment of said devices, to the zero point of fuel supply, said control mechanism comprising a variable length link having a fixed length during normal engine operation, but may vary in length when the devices come into engagement with said stopper and the regulator tends to cause movement of said devices beyond said stopper. 28.) A fuel supply apparatus for an internal combustion engine, comprising a variable flow metering pump for supplying fuel to the cylinders of the engine, a control mechanism for said pump comprising a regulator adapted to be controlled by the engine. motor, an oscillating shaft adapted to rotate under Inaction of the regulator, a port lever, by said oscillating shaft, a second lever, a dwarf-adjustable member pivotally supporting said second lever, a link connecting said levers and a connecting rod to said second lever and to the pump to vary the flow rate thereof. 29.) An apparatus according to claim 28 comprising a manually adjustable eccentric pivotally supporting said second lever and adapted to pivot, during its rotation, said second lever with respect to said link, and a link connecting said second. lever at the pump, whereby the flow rate of the pump can be changed, both by said regulator and by adjusting said eccentric. 30.) A fuel supply apparatus for an internal combustion engine comprising a variable stroke pump for supplying fuel to the cylinders of the engine, a mechanism controlled by the engine for operating said pump and having adjustable devices for varying the stroke of the pump, a regulator controlled by the motor, and a mechanism <Desc / Clms Page number 36> control connecting said regulator to said adjustable devices, said control mechanism comprising a lever capable of operating under the action of the regulator and an eccentric adjustable by hand, supporting said lever by tingling. SI.) An apparatus according to claim 30 comprising a control lever, two links respectively connecting said control lever to said lever cut off by the regulator and to said adjustable devices, and an eccentric supporting said control lever, said eccentric being adjustable. by hand to rotate said control lever. 32.) An apparatus according to claim 31, comprising a stop carried by said eccentric, a stop with which said stop can engage to limit the rotation of the eccentric in one direction for a predetermined maximum speed of the motor, a lever disposed in the path of said stopper and with which said stopper can engage, when the eccentric rotates in the opposite direction to a running position, said last-mentioned lever being pivotable by rotation continues from the eccentric in said opposite direction. and a stopper with which said last mentioned lever can engage, when the eccentric is moved to the zero fuel supply position. 33.) An apparatus according to either of claims 31 and 32, comprising a pin extending radially and carried by said eccentric, an idle lever extending over the path of said pin which may come. engaged with it, when the eccentric is moved to an idle position, said idle lever being movable by said pin, when the eccentric is moved to a position corresponding to a lower engine speed at idle speed, and a stop with which said idle lever can engage) -Imitate the new eccentric to a position corresponding to zero speed <Desc / Clms Page number 37> EMI37.1 "engine. 34.) An apparatus according to claim 33 comprising a stopper serving to: 9 prevent said idle lever from pivoting to a position corresponding to a higher speed than the idle speed, a spring tending to L: 12 Í It holds: ;. "said idle lever against said stops and opposing the movement of said idle lever under the action of said pin EMI37.2 up to a position corresponding to a speed lower than 4eL.ldtC: tGdBl.i POS1.G1.0n O3.S.t SJè / N.! ^ WAdé to '.14b V1. Gsse TI0: rlU3 the idle speed, and a second stopper serving to prevent said relenting lever from pivoting to a position beyond EMI37.3 of the position corresponding to zero speed, thus limiting the new .TiâCltL'CLd to a Position corresponding to zero speed. 35.) a fuel supply apparatus for EMI37.4 internal combustion, comprising a? pressurized fuel source, a variable flow PO 2 to supply fuel, from the source to the engine cylinders, a valve to control the fuel flow from said source to the EMI37.5 , lR: 7cbLxs fitted with a spring tending to close the valve, one detained? to keep the valve open, and a member for moving said trigger by disengaging it from said valve is permeable. EMI37.6 3 <^ -, t Ls said spring of the E: 'L? 1' t thereby prevent the flow of fuel to said stern. 36.) An apparatus according to claim 35, wherein said valve comprises a movable valve or valve part, and wherein said spring tends to move the- EMI37.7 : 1 0 i ''., -, <: 0. "....... At 0 t." ,, 'if> Û r: o. r.:.,-., "'t -, .......- said valve or valve part up to the fcrnc- ture position. 37.) An apparatus according to claims 35 and 33, in EMI37.8 latch said valve piece carries a Gl ') aulGY-12nt, said dozer- being able to engage with said shoulder to hold said valve part in the open position, a member EMI37.9 was used to move said trigger by releasing it from said <Desc / Clms Page number 38> epqulement, is provided to allow said spring to move the valve piece to the closed position and a second spring is provided which tends to move said detent to a position of the shoulder engaged. 38.) An apparatus according to either of claims 35 and 37, comprising a shaft for controlling said pump, a counterweight mounted inside said shaft and adapted to move radically outside of it. the latter under the action of centrifugal force, said trigger serving to keep said valve open, capable of engaging with said counterweight when the latter moves outwardly to move said trigger by disengaging it from said valve to allow the latter to close. 39.) An apparatus according to the claims. 37 and 38, wherein said first-mentioned spring tends to hold said counterweight entirely within said shaft, said counterweight being arranged to be moved radially outwardly of said shaft under the action of centrifugal force centered on the shaft. action of said spring. 40.) An apparatus according to any one of claims 35, 36, 37, 38 and 39, comprising a source of fuel * under pressure, a metering stern with variable flow rate for supplying fuel from said source to the cylinders of the cylinder. motor, a valve controlled by a spring controlling the flow of fuel coming from said source to said pump, a shaft for controlling said pump, a counterweight not mounted in said shaft, a spring tending to maintain said counterweight entirely inside said shaft, said counterweight being adapted to be moved radially outwardly of said shaft under the action of centrifugal force against the action of said spring, a relaxation being able to be moved coming normally, it is taken with said valve to keep it open, trigger with which said counterweight can engage when the latter moves <Desc / Clms Page number 39> over a predetermined distance outside the shaft, to move the sensor by disengaging it from said valve, and a spring tending to move said trigger to a position of engagement with the valve, said valve being able to be moved to the proper position. in order to bring it back into engagement with said trigger. 41.) An apparatus according to any one of the preceding claims 35 to 40, comprising a member which may be mentioned above 35 to 40, comprising a member which can be dwarf controlled to move said trigger by disengaging it from said valve. 42.) An apparatus according to any of the preceding claims 35 to 41, comprising a rotary box for moving said trigger by disengaging it from said valve, and a lever operable to the. hand to rotate said cam. 43.) An apparatus according to any one of the preceding claims 35 to 41, comprising a charge pump for supplying fuel under pressure to said metering pump. 44.) a fuel supply apparatus for an internal combustion engine, comprising. a variable flow pump for supplying fuel to the cylinders of the engine, a charging pump, a fuel line connecting said pumps, a control valve disposed on said duct, a regulator for varying the flow rate of said metering pump, a control shaft driven by the motor to operate said pumps and said regulator, and an "overspeed" shut-off device controlled by centrifugal force, carried by said control shaft to effect the closing of said control valve. 45.) An apparatus according to claim 44, wherein said shaft carries a toothed wheel for controlling said charging pump and said governor, said toothed wheel having an elongated hub surrounding said drive shaft. <Desc / Clms Page number 40> 46.) An apparatus according to claims 44 and 45, wherein said stopper comprises a counterweight mounted diametrically in said hub and in said drive shaft. and adapted to effect the closing of said control valve. 47.) A fuel supply apparatus for an internal combustion engine, comprising two crankcase elements placed one on top of the other, a control shaft driven by the engine, mounted in the lower element of the crankcase, a charge pump suspended from the lower element of the housing and having a drive connection with said control shaft, and a distributor for delivering fuel to the cylinders of the engine, a metering pump for supplying fuel from said pump loading said distributor, and a regulator controlling said metering pump, the whole being mounted in the upper element of the housing and comprising drive links extending into the lower element of the housing with a view to connecting to said control shaft. 48.) A fuel supply apparatus for an internal combustion engine, comprising a metering pump with variable flow rate to supply fuel to the cylinders of the engine, a control shaft driven by the engine for operating said metering pump, a charge pump for supplying pressurized fuel to said metering pump, and mounted on one side of said drive shaft, a regulator controlling the flow rate of said metering pump, and a single toothed wheel mounted on said drive shaft for operating said charging pump and said regulator. 49.) a fuel supply apparatus for an internal combustion engine comprising a fuel pump for delivering metered quantities of fuel to the cylinders of the actor and comprising a cylinder and a piston, a device driven by a cylinder. cane to move the piston, when <Desc / Clms Page number 41> of its delivery stroke, and a source of pressurized fuel for supplying fuel to said pump, the pressure, fuel supplied to the pump moving the piston during its intake stroke, 50.) An apparatus according to claim 49, comprising a rocker lever connected to the piston, a motor driven cam for actuating said rocker lever to move the: - piston during its delivery stroke, and a source of pressurized fuel to supply fuel to said pump, the pressure of the latter moving the piston during its intake stroke and castor holding the lever oscillate in connection with the said case. 51.) A fuel supply apparatus for an internal combustion engine, constructed and adapted to operate substantially as described herein, with reference to the embodiment shown in the accompanying drawings.