EP3054145A1 - Fuel injection pump driven by the crankshaft of the internal combustion engine supplied by the pump - Google Patents

Fuel injection pump driven by the crankshaft of the internal combustion engine supplied by the pump Download PDF

Info

Publication number
EP3054145A1
EP3054145A1 EP16151783.4A EP16151783A EP3054145A1 EP 3054145 A1 EP3054145 A1 EP 3054145A1 EP 16151783 A EP16151783 A EP 16151783A EP 3054145 A1 EP3054145 A1 EP 3054145A1
Authority
EP
European Patent Office
Prior art keywords
crankshaft
injection pump
arrangement according
axis
pusher
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16151783.4A
Other languages
German (de)
French (fr)
Inventor
Jean-Baptiste CHANCERELLE
Franck Vincent
Gonzalo PORTELA-GARNIKA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Original Assignee
Renault SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renault SAS filed Critical Renault SAS
Publication of EP3054145A1 publication Critical patent/EP3054145A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F02M39/02—Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/04—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps
    • F02M59/06—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps with cylinders arranged radially to driving shaft, e.g. in V or star arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102—Mechanical drive, e.g. tappets or cams

Definitions

  • the invention relates to an arrangement for a motor vehicle, comprising a crankshaft of a heat engine and a high-pressure fuel injection pump, in particular a diesel fuel pump, for supplying the engine with fuel.
  • the invention also relates to a motor vehicle comprising at least one such arrangement.
  • the fuel injection pump in particular for supplying high-pressure gas oil, is set in motion by the camshaft of the heat engine which is supplied with fuel by this pump.
  • the camshaft is a shaft located towards the cylinder head of the engine, rotatably mounted so as to cause the movement of the valves controlling the intake of air before combustion and the exhaust gases after combustion.
  • a high pressure pump has the effect of adding a mechanical torque on the cam shaft, typically between 80 and 100 Nm approximately, where the function related to the simple control of the valves requires only a mechanical torque typically of the order of 15 Nm on the camshaft.
  • the object of the present invention is to propose a solution that overcomes the disadvantages listed above.
  • an object of the invention is to provide such a solution, namely an arrangement for a motor vehicle, comprising a crankshaft of a heat engine and a high-pressure fuel injection pump, in particular diesel, intended for the engine fuel supply, which is an alternative solution to the prior art, simpler, avoiding the maximum addition of parts or the transformation of existing parts, inexpensive and reliable operation.
  • This object can be achieved by means of an arrangement for a motor vehicle, comprising a crankshaft of a heat engine and a high-pressure fuel injection pump, in particular a diesel fuel pump, for supplying the engine with fuel, in which the injection pump is actuated and driven in motion by the crankshaft.
  • the injection pump is of single-piston type and comprises a fixed body and a pusher provided with a single piston whose displacement in translation relative to the fixed body is actuated by the rotational movement of the crankshaft.
  • the pusher may comprise a rotary roller in direct mechanical contact with a rotary cam integral with the crankshaft.
  • the cam is directly formed in the constituent part of the crankshaft.
  • the cam may be arranged in the connection zone between the arm and the trunnion when the crankshaft comprises at least one crankpin and at least one trunnion connected to each other by at least one arm.
  • the cam may in particular be formed directly in the constituent material of the arm.
  • the injection pump is spatially oriented so that the axis of translation of the pusher is substantially perpendicular to the crankshaft. axis of rotation of the crankshaft and forms an angle between 45 ° and 135 ° with the direction of the combustion forces.
  • the crankshaft can be rotated by at least one piston applying to the crankshaft combustion forces and the injection pump can be oriented spatially so that the translation axis of the pusher is substantially perpendicular to the axis of rotation of the crankshaft and forms an angle between 0 ° and 45 ° with the direction of the combustion forces.
  • the injection pump may be located, relative to the crankshaft, on the same side as the at least one piston.
  • the axis of translation of the pusher of the injection pump and the axis of rotation of the crankshaft may be secant.
  • the axis of translation of the pusher of the injection pump can be offset relative to the axis of rotation of the crankshaft and the axis of translation of the pusher can form an angle between 0 ° and 25 ° with the direction of the combustion forces.
  • a motor vehicle may include at least one such arrangement.
  • the invention generally relates to an arrangement for a motor vehicle, comprising a crankshaft 10 of a heat engine and a high-pressure fuel injection pump 11, in particular of gas oil, intended to the fuel supply of the engine.
  • a fuel injection pump 11 in particular of gas oil
  • the solution described here is particularly well suited to the particular case of fuel in the form of diesel, it remains possible to use other types of fuel.
  • the invention also relates to a motor vehicle comprising at least one such arrangement.
  • the "heat engine” is the main engine of the motor vehicle, operating on thermal energy from the operation of the fuel, and ensuring the traction or propulsion of the vehicle in forward and reverse.
  • the injection pump 11 is intended to be used as part of the fuel supply of the engine, otherwise it is of the internal combustion type.
  • the crankshaft 10 is, in known manner and conventional, the output shaft of the engine, which is rotated by means of crank-crank systems by the combustion forces transmitted by the pistons of the engine. It is then coupled, by a belt-type transmission device or chain, to a camshaft of the engine, which sets in motion the intake and exhaust valves associated with the combustion chambers corresponding to the aforementioned pistons.
  • the fuel pressurized via the pump 11 is injected directly or not into these combustion chambers.
  • the injection pump 11 is actuated and driven in motion by the crankshaft 10.
  • the fuel injection pump 11 is set in motion by the crankshaft 10 of the engine, this engine being - even fueled by the injection pump 11.
  • high pressure associated with the fuel injection pump 11 preferably means in this document that the injection pressure of the fuel, which may in particular be gas oil as has already been specified, is greater than 1000 bar, for example example of the order of 2000 bars.
  • the mutual interaction force between the fuel injection pump 11 and the crankshaft 10 may in particular be of the order of 10 kN for the case of a motor speed of 4000 rpm, for example.
  • the injection pump 11 has the effect of adding a mechanical torque of between 80 to 100 Nm on the shaft which actuates it in rotation.
  • this addition of mechanical torque is done on the functions already assigned classically to the crankshaft 10.
  • the value of this torque addition is quantitatively very low compared to the mechanical torque conventionally transmitted by the crankshaft 11 and which is already sized for this purpose.
  • the injection pump 11 presses about 10000N on the crankshaft 10, which is very low with respect to the combustion forces which are in the order of 90000N generally, transmitted by the pistons of the engine to the crankshaft 10 under the effect of the explosions of the mixture between the air and the fuel supplied by the injection pump 11 into the combustion chamber located on the opposite side to the crankshaft 10 relative to the corresponding piston.
  • the injection pump 11 is of the single-piston type and comprises a fixed body 15 and a pusher 13 provided with a single piston whose displacement in translation relative to the fixed body 15 is actuated by the rotational movement of the crankshaft 10 about its axis of rotation marked D2.
  • the fixed body 15 is held on the engine block by means of not shown fastening means.
  • the pusher 13 comprises a rotary roller 14 in direct mechanical contact with a rotary cam 12 secured to the crankshaft 10.
  • the rotational movement of the cam 12 under the effect of the rotation of the crankshaft 10, causes both the rotation of the roller 14 and the compression of the pusher 13, to constrain its piston in opposition to the action of a return spring disposed in the fixed body 15.
  • the cam 12 is directly formed in the room constituting the crankshaft 10. This avoids an assembly by adding parts, to overcome as much as possible the need for a specific assembly potentially expensive and additional need for manpower.
  • the crankshaft 10 comprises at least one crank pin and at least one trunnion connected to each other via at least one arm. More specifically, one end of the crankpin is connected to the end of the corresponding spigot.
  • the cam 12 can then advantageously be arranged in the connection zone between the arm and the trunnion. According to a particular embodiment, the cam 12 is also formed directly in the constituent material of the arm.
  • the mounting of the pins according to a pivot connection makes it possible to provide a rotational mounting of the crankshaft 10 as a whole.
  • the cam 12 rotates about the axis of rotation D2 of the crankshaft 10 together with the latter.
  • the single appended figure shows, in axial section, an example of an arrangement according to the invention with three angular positions of the injection pump 11 that can be envisaged in the context of the invention.
  • the injection pump 11 can occupy a first angular position, marked A, relative to the crankshaft 10, in particular around its axis of rotation D2.
  • the injection pump 11 is spatially oriented so that the translation axis D3 A of the pusher 13 is substantially perpendicular to the axis of rotation D2 of the crankshaft 11 and forms an angle ⁇ between 45 ° and 135 ° with the direction D1 of the combustion forces.
  • the axis of translation of the pusher 13, when the pump 11 occupies the angular position A, is the one identified D3 A.
  • the translation axis D3 A of the pusher 13 of the injection pump 11 and the axis of rotation D2 of the crankshaft are secant.
  • This angular position A of the injection pump 11 is that it makes it possible to orient the pump 11 substantially horizontally, in areas that are more easily free and less congested than in other zones, making the implantation of the pump easier and less restrictive.
  • the angular position A imparts loading of the rotational mounting bearings of the crankshaft 10 in their respective joint planes, in areas in which they have not necessarily been designed to work. Indeed, these bearings are first designed so as to work radially in the direction of orientation of the combustion forces, generally substantially vertically.
  • the injection pump 11 can occupy a second angular position, marked B, with respect to the crankshaft 10, in particular around its axis of rotation D2.
  • the injection pump 11 is oriented spatially so that the translation axis D3 B of the pusher 13 is substantially perpendicular to the axis of rotation D2 of the crankshaft 10 and forms an angle ⁇ between 0 ° and 45 ° with the direction D1 of the combustion forces.
  • the axis of translation of the pusher 13, when the pump 11 occupies the angular position B, is therefore that designated D3 B.
  • the injection pump 11 is located, relative to the crankshaft 10, on the same side as said at least one piston which applies the combustion forces.
  • the translation axis D3 B of the pusher 13 of the injection pump 11 and the axis of rotation D2 of the crankshaft are secant, as in the case of the first position A.
  • the injection pump 11 can be straightened vertically as much as possible, depending in particular on the size and space available above the crankshaft 10.
  • the main efforts that result are totally included in the lower zone of the crankshaft fixing bearings 10, in the same zone as that where the combustion forces are cashed.
  • the crankshaft fixing bearings 10 work radially only in the direction of orientation of the combustion forces, generally substantially vertically.
  • the injection pump 11 can therefore alternatively occupy a third angular position, marked C, with respect to the crankshaft 10, in particular around its axis of rotation D2.
  • the translation axis D3c of the pusher 13 of the injection pump 11 is offset relative to the axis of rotation D2 of the crankshaft 10 and the translation axis D3c of the pusher 13 forms an angle ⁇ between 0 ° and 25 ° with the direction D1 of the combustion forces.
  • the axis of translation of the pusher 13, when the pump 11 occupies the angular position C, is the one identified D3c.
  • the offset between the translation axis and D3c and the axis of rotation D2 is marked X in the figure.
  • An advantage of the third position in which the translation axis and D3c and the axis of rotation D2 are not secant contrary to the first and second positions A, B, is to limit the radial forces in the injection pump 11 and between this pump and its attachment means to the engine block, for example in the form of a sleeve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

Un agencement pour véhicule automobile comprend un vilebrequin (10) d'un moteur thermique et une pompe d'injection de carburant à haute pression (11), notamment de gasoil, destiné à l'alimentation en carburant du moteur. La pompe d'injection (11) est actionnée et entrainée en mouvement par le vilebrequin (10). L'invention concerne aussi un véhicule automobile comprenant un tel agencement.An arrangement for a motor vehicle comprises a crankshaft (10) of a heat engine and a high-pressure fuel injection pump (11), in particular diesel fuel, for supplying the engine with fuel. The injection pump (11) is actuated and driven in motion by the crankshaft (10). The invention also relates to a motor vehicle comprising such an arrangement.

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention concerne un agencement pour véhicule automobile, comprenant un vilebrequin d'un moteur thermique et une pompe d'injection de carburant à haute pression, notamment de gasoil, destiné à l'alimentation en carburant du moteur.The invention relates to an arrangement for a motor vehicle, comprising a crankshaft of a heat engine and a high-pressure fuel injection pump, in particular a diesel fuel pump, for supplying the engine with fuel.

L'invention a pour objet également un véhicule automobile comprenant au moins un tel agencement.The invention also relates to a motor vehicle comprising at least one such arrangement.

État de la techniqueState of the art

Classiquement, la pompe d'injection de carburant, notamment pour l'alimentation en gasoil à haute pression, est mise en mouvement par l'arbre à came du moteur thermique qui est alimenté en carburant par cette pompe. L'arbre à came est un arbre situé vers la culasse du moteur, monté de manière rotative de sorte à entrainer le mouvement des soupapes pilotant l'admission d'air avant combustion et l'échappement des gaz après combustion.Conventionally, the fuel injection pump, in particular for supplying high-pressure gas oil, is set in motion by the camshaft of the heat engine which is supplied with fuel by this pump. The camshaft is a shaft located towards the cylinder head of the engine, rotatably mounted so as to cause the movement of the valves controlling the intake of air before combustion and the exhaust gases after combustion.

L'implantation de la pompe d'injection à cet emplacement, bien que donnant satisfaction quant à la fonction recherchée n'est pas sans poser de problème. En effet, une pompe haute pression a pour effet d'ajouter un couple mécanique sur l'arbre à came, typiquement compris entre 80 et 100 Nm environ, là où la fonction liée à la simple commande des soupapes ne réclame qu'un couple mécanique classiquement de l'ordre de 15 Nm sur l'arbre à came.The implantation of the injection pump at this location, although giving satisfaction as to the function sought is not without problems. Indeed, a high pressure pump has the effect of adding a mechanical torque on the cam shaft, typically between 80 and 100 Nm approximately, where the function related to the simple control of the valves requires only a mechanical torque typically of the order of 15 Nm on the camshaft.

Ce rapport de proportion n'est pas anodin et il en résulte une nécessité d'adaptation en conséquence de l'arbre à came dans son dimensionnement et dans sa conception, que ce soit en rapport avec l'arbre à came en tant que tel, ou avec ses moyens de montage à rotation. Souvent, il en résulte une complexification de la solution et une augmentation des coûts. Parfois aussi, l'implantation de la pompe d'injection à cet endroit n'est pas possible en fonction de l'organisation et de l'encombrement dans le compartiment moteur.This ratio of proportion is not insignificant and it follows a necessity of adaptation accordingly of the camshaft in its dimensioning and in its design, whether in connection with the cam shaft itself, or with its rotating mounting means. Often, this results in a complexification of the solution and an increase in costs. Sometimes also, the implantation of the injection pump at this location is not possible depending on the organization and size in the engine compartment.

Objet de l'inventionObject of the invention

Le but de la présente invention est de proposer une solution qui remédie aux inconvénients listés ci-dessus.The object of the present invention is to propose a solution that overcomes the disadvantages listed above.

Notamment, un objet de l'invention est de fournir une telle solution, à savoir un agencement pour véhicule automobile, comprenant un vilebrequin d'un moteur thermique et une pompe d'injection de carburant à haute pression, notamment de gasoil, destiné à l'alimentation en carburant du moteur, qui soit une solution alternative à l'art antérieur, plus simple, évitant au maximum l'ajout de pièces ou la transformation de pièces existantes, peu onéreuse et d'une grande fiabilité de fonctionnement.In particular, an object of the invention is to provide such a solution, namely an arrangement for a motor vehicle, comprising a crankshaft of a heat engine and a high-pressure fuel injection pump, in particular diesel, intended for the engine fuel supply, which is an alternative solution to the prior art, simpler, avoiding the maximum addition of parts or the transformation of existing parts, inexpensive and reliable operation.

Cet objet peut être atteint grâce à un agencement pour véhicule automobile, comprenant un vilebrequin d'un moteur thermique et une pompe d'injection de carburant à haute pression, notamment de gasoil, destiné à l'alimentation en carburant du moteur, dans lequel la pompe d'injection est actionnée et entrainée en mouvement par le vilebrequin.This object can be achieved by means of an arrangement for a motor vehicle, comprising a crankshaft of a heat engine and a high-pressure fuel injection pump, in particular a diesel fuel pump, for supplying the engine with fuel, in which the injection pump is actuated and driven in motion by the crankshaft.

Selon un mode de réalisation particulier, la pompe d'injection est de type mono-piston et comprend un corps fixe et un poussoir muni d'un unique piston dont le déplacement en translation par rapport au corps fixe est actionné par le mouvement de rotation du vilebrequin.According to a particular embodiment, the injection pump is of single-piston type and comprises a fixed body and a pusher provided with a single piston whose displacement in translation relative to the fixed body is actuated by the rotational movement of the crankshaft.

Le poussoir peut comprendre un galet rotatif en contact mécanique direct avec une came rotative solidaire du vilebrequin.The pusher may comprise a rotary roller in direct mechanical contact with a rotary cam integral with the crankshaft.

De manière préférentielle, la came est directement formée dans la pièce constitutive du vilebrequin.Preferably, the cam is directly formed in the constituent part of the crankshaft.

La came peut-être disposée dans la zone de raccordement entre le bras et le tourillon lorsque le vilebrequin comprend au moins un maneton et au moins un tourillon raccordé entre eux par au moins un bras.The cam may be arranged in the connection zone between the arm and the trunnion when the crankshaft comprises at least one crankpin and at least one trunnion connected to each other by at least one arm.

La came peut notamment être formée directement dans la matière constitutive du bras.The cam may in particular be formed directly in the constituent material of the arm.

Selon un autre mode de réalisation particulier, le vilebrequin étant entrainé en rotation par au moins un piston appliquant au vilebrequin des efforts de combustion, la pompe d'injection est orientée spatialement de sorte que l'axe de translation du poussoir est sensiblement perpendiculaire à l'axe de rotation du vilebrequin et forme un angle compris entre 45° et 135° avec la direction des efforts de combustion.According to another particular embodiment, the crankshaft being rotated by at least one piston applying to the crankshaft combustion forces, the injection pump is spatially oriented so that the axis of translation of the pusher is substantially perpendicular to the crankshaft. axis of rotation of the crankshaft and forms an angle between 45 ° and 135 ° with the direction of the combustion forces.

Le vilebrequin peut être entrainé en rotation par au moins un piston appliquant au vilebrequin des efforts de combustion et la pompe d'injection peut être orientée spatialement de sorte que l'axe de translation du poussoir soit sensiblement perpendiculaire à l'axe de rotation du vilebrequin et forme un angle compris entre 0° et 45° avec la direction des efforts de combustion.The crankshaft can be rotated by at least one piston applying to the crankshaft combustion forces and the injection pump can be oriented spatially so that the translation axis of the pusher is substantially perpendicular to the axis of rotation of the crankshaft and forms an angle between 0 ° and 45 ° with the direction of the combustion forces.

La pompe d'injection peut être située, par rapport au vilebrequin, du même côté que ledit au moins un piston.The injection pump may be located, relative to the crankshaft, on the same side as the at least one piston.

L'axe de translation du poussoir de la pompe d'injection et l'axe de rotation du vilebrequin peuvent être sécants.The axis of translation of the pusher of the injection pump and the axis of rotation of the crankshaft may be secant.

L'axe de translation du poussoir de la pompe d'injection peut être décalé par rapport à l'axe de rotation du vilebrequin et l'axe de translation du poussoir peut former un angle compris entre 0° et 25° avec la direction des efforts de combustion.The axis of translation of the pusher of the injection pump can be offset relative to the axis of rotation of the crankshaft and the axis of translation of the pusher can form an angle between 0 ° and 25 ° with the direction of the combustion forces.

Un véhicule automobile peut comprendre au moins un tel agencement.A motor vehicle may include at least one such arrangement.

Description sommaire des dessinsBrief description of the drawings

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre de modes particuliers de réalisation de l'invention donnés à titre d'exemples non limitatifs et représentés sur la figure unique annexée qui montre, en coupe axiale, un exemple d'agencement selon l'invention avec trois orientations possibles de la pompe d'injection.Other advantages and features will emerge more clearly from the following description of particular embodiments of the invention given by way of non-limiting example and shown in the single appended figure which shows, in axial section, an example of arrangement according to the invention with three possible orientations of the injection pump.

Description de modes préférentiels de l'inventionDescription of preferred modes of the invention

En référence à la figure unique qui est annexée, l'invention concerne de manière générale un agencement pour véhicule automobile, comprenant un vilebrequin 10 d'un moteur thermique et une pompe d'injection de carburant à haute pression 11, notamment de gasoil, destiné à l'alimentation en carburant du moteur. Bien que la solution décrite ici soit particulièrement bien adaptée au cas particulier du carburant sous la forme de gasoil, il reste toutefois envisageable d'utiliser d'autres types de carburant.With reference to the single figure which is appended, the invention generally relates to an arrangement for a motor vehicle, comprising a crankshaft 10 of a heat engine and a high-pressure fuel injection pump 11, in particular of gas oil, intended to the fuel supply of the engine. Although the solution described here is particularly well suited to the particular case of fuel in the form of diesel, it remains possible to use other types of fuel.

L'invention a pour objet également un véhicule automobile comprenant au moins un tel agencement.The invention also relates to a motor vehicle comprising at least one such arrangement.

Dans ce document, le « moteur thermique » est le moteur principal du véhicule automobile, fonctionnant à l'énergie thermique issue de l'exploitation du carburant, et assurant la traction ou la propulsion du véhicule en marche avant et en marche arrière.In this document, the "heat engine" is the main engine of the motor vehicle, operating on thermal energy from the operation of the fuel, and ensuring the traction or propulsion of the vehicle in forward and reverse.

La pompe d'injection 11 est destinée à être utilisée dans le cadre de l'alimentation en carburant du moteur thermique, autrement qui est du type à combustion interne.The injection pump 11 is intended to be used as part of the fuel supply of the engine, otherwise it is of the internal combustion type.

Le vilebrequin 10 est, de manière connue et classique, l'arbre de sortie du moteur thermique, qui est entraîné en rotation par l'intermédiaire de systèmes bielle-manivelle par les efforts de combustion transmis par les pistons du moteur thermique. Il est ensuite accouplé, par un dispositif de transmission de type courroie ou chaine, à un arbre à came du moteur thermique, qui met en mouvement les soupapes d'admission et d'échappement associées aux chambres de combustion correspondant aux pistons susmentionnés. Le carburant mis sous pression via la pompe 11 est injecté de manière directe ou non dans ces chambres de combustion.The crankshaft 10 is, in known manner and conventional, the output shaft of the engine, which is rotated by means of crank-crank systems by the combustion forces transmitted by the pistons of the engine. It is then coupled, by a belt-type transmission device or chain, to a camshaft of the engine, which sets in motion the intake and exhaust valves associated with the combustion chambers corresponding to the aforementioned pistons. The fuel pressurized via the pump 11 is injected directly or not into these combustion chambers.

Selon une caractéristique essentielle, la pompe d'injection 11 est actionnée et entrainée en mouvement par le vilebrequin 10. Autrement dit, la pompe d'injection de carburant 11 est mise en mouvement par le vilebrequin 10 du moteur thermique, ce moteur thermique étant lui-même alimenté en carburant par la pompe d'injection 11.According to an essential characteristic, the injection pump 11 is actuated and driven in motion by the crankshaft 10. In other words, the fuel injection pump 11 is set in motion by the crankshaft 10 of the engine, this engine being - even fueled by the injection pump 11.

La solution décrite dans ce document prévoit donc l'ajout de la fonction d'entrainement de la pompe d'injection 11 sur les fonctions déjà connues associées classiquement au fonctionnement du vilebrequin 10.The solution described in this document therefore provides for the addition of the drive function of the injection pump 11 to the already known functions conventionally associated with the operation of the crankshaft 10.

Le terme « haute pression » associé à la pompe d'injection de carburant 11 signifie de préférence dans ce document que la pression d'injection du carburant, qui peut notamment être du gasoil comme cela a déjà précisé, est supérieure à 1000 bars, par exemple de l'ordre de 2000 bars. L'effort d'interaction réciproque entre la pompe d'injection de carburant 11 et le vilebrequin 10 peut notamment être de l'ordre de 10 kN pour le cas d'un régime moteur de 4000 trs/min par exemple.The term "high pressure" associated with the fuel injection pump 11 preferably means in this document that the injection pressure of the fuel, which may in particular be gas oil as has already been specified, is greater than 1000 bar, for example example of the order of 2000 bars. The mutual interaction force between the fuel injection pump 11 and the crankshaft 10 may in particular be of the order of 10 kN for the case of a motor speed of 4000 rpm, for example.

Comme il l'a déjà été précisé, la pompe d'injection 11 a pour effet d'ajouter un couple mécanique environ compris entre 80 à 100 Nm sur l'arbre qui l'actionne en rotation. Dans la cadre de la présente solution, cet ajout de couple mécanique se fait sur les fonctions déjà affectées classiquement au vilebrequin 10. Or la valeur de cet ajout de couple est quantitativement très faible en regard des couples mécaniques classiquement transmis par le vilebrequin 11 et qui est déjà dimensionné à cet effet. La pompe d'injection 11 appuie environ de 10000N sur le vilebrequin 10, ce qui est très faible en regard des efforts de combustion qui sont quant à eux de l'ordre de 90000N généralement, transmis par les pistons du moteur thermique au vilebrequin 10 sous l'effet des explosions du mélange entre l'air et le carburant alimenté par la pompe d'injection 11 dans la chambre de combustion située du côté opposé au vilebrequin 10 par rapport au piston correspondant.As already mentioned, the injection pump 11 has the effect of adding a mechanical torque of between 80 to 100 Nm on the shaft which actuates it in rotation. In the context of the present solution, this addition of mechanical torque is done on the functions already assigned classically to the crankshaft 10. However, the value of this torque addition is quantitatively very low compared to the mechanical torque conventionally transmitted by the crankshaft 11 and which is already sized for this purpose. The injection pump 11 presses about 10000N on the crankshaft 10, which is very low with respect to the combustion forces which are in the order of 90000N generally, transmitted by the pistons of the engine to the crankshaft 10 under the effect of the explosions of the mixture between the air and the fuel supplied by the injection pump 11 into the combustion chamber located on the opposite side to the crankshaft 10 relative to the corresponding piston.

Selon un mode de réalisation particulier non limitatif quant au champ d'application mais pour lequel la solution ici décrite apporte un réel avantage, la pompe d'injection 11 est de type mono-piston et comprend un corps fixe 15 et un poussoir 13 muni d'un unique piston dont le déplacement en translation par rapport au corps fixe 15 est actionné par le mouvement de rotation du vilebrequin 10 autour de son axe de rotation repéré D2. Le corps fixe est 15 est maintenu sur le bloc du moteur thermique via des moyens de fixation non représentés.According to a particular embodiment that is not limiting as to the field of application but for which the solution described here provides a real advantage, the injection pump 11 is of the single-piston type and comprises a fixed body 15 and a pusher 13 provided with a single piston whose displacement in translation relative to the fixed body 15 is actuated by the rotational movement of the crankshaft 10 about its axis of rotation marked D2. The fixed body 15 is held on the engine block by means of not shown fastening means.

Le poussoir 13 comprend un galet rotatif 14 en contact mécanique direct avec une came 12 rotative solidaire du vilebrequin 10. Ainsi, le mouvement de rotation de la came 12, sous l'effet de la rotation du vilebrequin 10, provoque à la fois la rotation du galet 14 et la compression du poussoir 13, pour contraindre son piston en opposition à l'action d'un ressort de rappel disposé dans le corps fixe 15.The pusher 13 comprises a rotary roller 14 in direct mechanical contact with a rotary cam 12 secured to the crankshaft 10. Thus, the rotational movement of the cam 12, under the effect of the rotation of the crankshaft 10, causes both the rotation of the roller 14 and the compression of the pusher 13, to constrain its piston in opposition to the action of a return spring disposed in the fixed body 15.

Selon un mode de réalisation avantageux en terme de simplicité de fabrication et de limitation des coûts, la came 12 est directement formée dans la pièce constitutive du vilebrequin 10. Cela évite un montage par adjonction de pièces, pour s'affranchir autant que possible de la nécessité d'un montage spécifique potentiellement onéreux et de besoin supplémentaire en main d'oeuvre.According to an advantageous embodiment in terms of simplicity of manufacture and cost limitation, the cam 12 is directly formed in the room constituting the crankshaft 10. This avoids an assembly by adding parts, to overcome as much as possible the need for a specific assembly potentially expensive and additional need for manpower.

Le vilebrequin 10 comprend au moins un maneton et au moins un tourillon raccordé entre eux par l'intermédiaire d'au moins un bras. Plus précisément, une extrémité du maneton est liée à l'extrémité du tourillon correspondant. La came 12 peut alors avantageusement être disposée dans la zone de raccordement entre le bras et le tourillon. Selon un mode de réalisation particulier, la came 12 est d'ailleurs formée directement dans la matière constitutive du bras.The crankshaft 10 comprises at least one crank pin and at least one trunnion connected to each other via at least one arm. More specifically, one end of the crankpin is connected to the end of the corresponding spigot. The cam 12 can then advantageously be arranged in the connection zone between the arm and the trunnion. According to a particular embodiment, the cam 12 is also formed directly in the constituent material of the arm.

Ces dispositions permettent de loger la pompe d'injection 11 directement au niveau ou à proximité du vilebrequin, évitant tout besoin ou recours à des pièces supplémentaires. Ce résultat est atteint sans nécessité d'ajout de longueur au vilebrequin, qui engendrerait sinon des problématiques supplémentaires de coûts et d'encombrement.These arrangements make it possible to house the injection pump 11 directly at or near the crankshaft, avoiding any need or using additional parts. This result is achieved without the need to add length to the crankshaft, which otherwise would generate additional cost and congestion issues.

Le montage des tourillons selon une liaison pivot permet de conférer un montage à rotation du vilebrequin 10 dans son ensemble. La came 12 tourne à rotation autour de l'axe de rotation D2 du vilebrequin 10 conjointement avec ce dernier.The mounting of the pins according to a pivot connection makes it possible to provide a rotational mounting of the crankshaft 10 as a whole. The cam 12 rotates about the axis of rotation D2 of the crankshaft 10 together with the latter.

La figure unique annexée montre, en coupe axiale, un exemple d'agencement selon l'invention avec trois positions angulaires de la pompe d'injection 11 envisageables dans le cadre de l'invention.The single appended figure shows, in axial section, an example of an arrangement according to the invention with three angular positions of the injection pump 11 that can be envisaged in the context of the invention.

Ainsi, la pompe d'injection 11 peut occuper une première position angulaire, repérée A, par rapport au vilebrequin 10, notamment autour de son axe de rotation D2.Thus, the injection pump 11 can occupy a first angular position, marked A, relative to the crankshaft 10, in particular around its axis of rotation D2.

Dans cette première position A, le vilebrequin 10 étant entrainé en rotation par au moins un piston (non représenté) appliquant au vilebrequin 10 (au niveau des manetons) des efforts de combustion, la pompe d'injection 11 est orientée spatialement de sorte que l'axe de translation D3A du poussoir 13 est sensiblement perpendiculaire à l'axe de rotation D2 du vilebrequin 11 et forme un angle δ compris entre 45° et 135° avec la direction D1 des efforts de combustion. L'axe de translation du poussoir 13, lorsque la pompe 11 occupe la position angulaire A, est donc celui repéré D3A.In this first position A, the crankshaft 10 being rotated by at least one piston (not shown) applying to the crankshaft 10 (at the crank pins) combustion forces, the injection pump 11 is spatially oriented so that the translation axis D3 A of the pusher 13 is substantially perpendicular to the axis of rotation D2 of the crankshaft 11 and forms an angle δ between 45 ° and 135 ° with the direction D1 of the combustion forces. The axis of translation of the pusher 13, when the pump 11 occupies the angular position A, is the one identified D3 A.

Dans la première position A, l'axe de translation D3A du poussoir 13 de la pompe d'injection 11 et l'axe de rotation D2 du vilebrequin sont sécants.In the first position A, the translation axis D3 A of the pusher 13 of the injection pump 11 and the axis of rotation D2 of the crankshaft are secant.

Un avantage de cette position angulaire A de la pompe d'injection 11 est de permettre d'orienter la pompe 11 sensiblement à l'horizontale, dans des zones plus facilement libres et moins encombrées que dans d'autres zones, rendant l'implantation de la pompe plus aisée et moins contraignante.An advantage of this angular position A of the injection pump 11 is that it makes it possible to orient the pump 11 substantially horizontally, in areas that are more easily free and less congested than in other zones, making the implantation of the pump easier and less restrictive.

Toutefois, la position angulaire A confère un chargement des paliers du montage à rotation du vilebrequin 10 dans leurs plans de joint respectifs, dans des zones dans lesquelles ils n'ont pas forcément été conçus pour travailler. En effet, ces paliers sont d'abord conçus de sorte à travailler radialement dans la direction d'orientation des efforts de combustion, généralement sensiblement verticalement.However, the angular position A imparts loading of the rotational mounting bearings of the crankshaft 10 in their respective joint planes, in areas in which they have not necessarily been designed to work. Indeed, these bearings are first designed so as to work radially in the direction of orientation of the combustion forces, generally substantially vertically.

Pour répondre à cette problématique, ainsi que pour limiter les efforts subis par les moyens de fixation de la pompe d'injection 11, il est proposé ci-dessous les deux positions angulaires B et C.To address this problem, as well as to limit the forces suffered by the attachment means of the injection pump 11, it is proposed below the two angular positions B and C.

Ainsi, la pompe d'injection 11 peut occuper une deuxième position angulaire, repérée B, par rapport au vilebrequin 10, notamment autour de son axe de rotation D2.Thus, the injection pump 11 can occupy a second angular position, marked B, with respect to the crankshaft 10, in particular around its axis of rotation D2.

Dans cette deuxième position B, le vilebrequin 10 étant entrainé en rotation par au moins un piston (non représenté) appliquant au vilebrequin 10 (sur les manetons) des efforts de combustion, la pompe d'injection 11 est orientée spatialement de sorte que l'axe de translation D3B du poussoir 13 est sensiblement perpendiculaire à l'axe de rotation D2 du vilebrequin 10 et forme un angle β compris entre 0° et 45° avec la direction D1 des efforts de combustion. L'axe de translation du poussoir 13, lorsque la pompe 11 occupe la position angulaire B, est donc celui repéré D3B.In this second position B, the crankshaft 10 being rotated by at least one piston (not shown) applying to the crankshaft 10 (on the crank pins) combustion forces, the injection pump 11 is oriented spatially so that the translation axis D3 B of the pusher 13 is substantially perpendicular to the axis of rotation D2 of the crankshaft 10 and forms an angle β between 0 ° and 45 ° with the direction D1 of the combustion forces. The axis of translation of the pusher 13, when the pump 11 occupies the angular position B, is therefore that designated D3 B.

Selon un mode de réalisation particulier, la pompe d'injection 11 est située, par rapport au vilebrequin 10, du même côté que ledit au moins un piston qui applique les efforts de combustion.According to a particular embodiment, the injection pump 11 is located, relative to the crankshaft 10, on the same side as said at least one piston which applies the combustion forces.

Dans la deuxième position B, l'axe de translation D3B du poussoir 13 de la pompe d'injection 11 et l'axe de rotation D2 du vilebrequin sont sécants, comme dans le cas de la première position A.In the second position B, the translation axis D3 B of the pusher 13 of the injection pump 11 and the axis of rotation D2 of the crankshaft are secant, as in the case of the first position A.

Dans cette deuxième position B, la pompe d'injection 11 peut être redressée verticalement autant que possible, en fonction notamment de l'encombrement et de la place disponibles au-dessus du vilebrequin 10. Les efforts principaux qui en résultent sont totalement inclus dans la zone inférieure des paliers de fixation du vilebrequin 10, dans la même zone que celle où sont encaissés les efforts de combustion. Même pour encaisser les efforts dus au contact mécanique entre le vilebrequin 10 et la pompe d'injection 11, les paliers de fixation du vilebrequin 10 travaillent radialement uniquement dans la direction d'orientation des efforts de combustion, généralement sensiblement verticalement.In this second position B, the injection pump 11 can be straightened vertically as much as possible, depending in particular on the size and space available above the crankshaft 10. The main efforts that result are totally included in the lower zone of the crankshaft fixing bearings 10, in the same zone as that where the combustion forces are cashed. Even to absorb the forces due to the mechanical contact between the crankshaft 10 and the injection pump 11, the crankshaft fixing bearings 10 work radially only in the direction of orientation of the combustion forces, generally substantially vertically.

La pompe d'injection 11 peut donc alternativement occuper une troisième position angulaire, repérée C, par rapport au vilebrequin 10, notamment autour de son axe de rotation D2.The injection pump 11 can therefore alternatively occupy a third angular position, marked C, with respect to the crankshaft 10, in particular around its axis of rotation D2.

Dans la troisième position C, l'axe de translation D3c du poussoir 13 de la pompe d'injection 11 est décalé par rapport à l'axe de rotation D2 du vilebrequin 10 et l'axe de translation D3c du poussoir 13 forme un angle δ compris entre 0° et 25° avec la direction D1 des efforts de combustion. L'axe de translation du poussoir 13, lorsque la pompe 11 occupe la position angulaire C, est donc celui repéré D3c. Le décalage entre l'axe de translation et D3c et l'axe de rotation D2 est repéré X sur la figure. Un avantage de la troisième position dans laquelle l'axe de translation et D3c et l'axe de rotation D2 ne sont pas sécants au contraire des première et deuxième positions A, B, est de limiter les efforts radiaux dans la pompe d'injection 11 et entre cette pompe et ses moyens de fixation au bloc moteur, par exemple sous la forme d'un fourreau.In the third position C, the translation axis D3c of the pusher 13 of the injection pump 11 is offset relative to the axis of rotation D2 of the crankshaft 10 and the translation axis D3c of the pusher 13 forms an angle δ between 0 ° and 25 ° with the direction D1 of the combustion forces. The axis of translation of the pusher 13, when the pump 11 occupies the angular position C, is the one identified D3c. The offset between the translation axis and D3c and the axis of rotation D2 is marked X in the figure. An advantage of the third position in which the translation axis and D3c and the axis of rotation D2 are not secant contrary to the first and second positions A, B, is to limit the radial forces in the injection pump 11 and between this pump and its attachment means to the engine block, for example in the form of a sleeve.

En particulier, dans cette dernière variante, il sera possible de configurer l'ensemble de sorte que l'axe de translation D3c du poussoir 13 coïncide sensiblement avec la droite normale à la came 12 au point de contact entre la came 12 et le poussoir 13 (plus précisément son galet rotatif 14) au moment où la came 12 adopte sa position angulaire, durant la rotation du vilebrequin 10, où les efforts d'interaction entre le poussoir 13 et la came 12 sont maximums durant un cycle de révolution.In particular, in this latter variant, it will be possible to configure the assembly so that the translation axis D3c of the pusher 13 substantially coincides with the line normal to the cam 12 at the point of contact between the cam 12 and the pusher 13 (more precisely its rotary roller 14) at the moment when the cam 12 adopts its angular position, during the rotation of the crankshaft 10, where the interaction forces between the pusher 13 and the cam 12 are maximum during a cycle of revolution.

La solution décrite dans ce document est d'être simple, d'éviter au maximum l'ajout de pièces ou la transformation de pièces existantes, d'être peu onéreuse et de présenter une grande fiabilité de fonctionnement.The solution described in this document is to be simple, to minimize the addition of parts or the transformation of existing parts, be inexpensive and have a high reliability of operation.

Claims (12)

Agencement pour véhicule automobile, comprenant un vilebrequin (10) d'un moteur thermique et une pompe d'injection de carburant à haute pression (11), notamment de gasoil, destiné à l'alimentation en carburant du moteur, dans lequel la pompe d'injection (11) est actionnée et entrainée en mouvement par le vilebrequin (10).Arrangement for a motor vehicle, comprising a crankshaft (10) of a heat engine and a high-pressure fuel injection pump (11), in particular diesel fuel, for supplying fuel to the engine, in which the fuel pump injection (11) is actuated and driven in motion by the crankshaft (10). Agencement selon la revendication 1, caractérisé en ce que la pompe d'injection (11) est de type mono-piston et comprend un corps fixe (15) et un poussoir (13) muni d'un unique piston dont le déplacement en translation par rapport au corps fixe (15) est actionné par le mouvement de rotation du vilebrequin (10).Arrangement according to claim 1, characterized in that the injection pump (11) is of single-piston type and comprises a fixed body (15) and a pusher (13) provided with a single piston whose displacement in translation by relative to the fixed body (15) is actuated by the rotational movement of the crankshaft (10). Agencement selon la revendication 2, caractérisé en ce que le poussoir (13) comprend un galet rotatif (14) en contact mécanique direct avec une came (12) rotative solidaire du vilebrequin (10).Arrangement according to claim 2, characterized in that the pusher (13) comprises a rotary roller (14) in direct mechanical contact with a cam (12) rotatable integral with the crankshaft (10). Agencement selon la revendication 3, caractérisé en ce que la came (12) est directement formée dans la pièce constitutive du vilebrequin (10).Arrangement according to claim 3, characterized in that the cam (12) is directly formed in the constituent part of the crankshaft (10). Agencement selon l'une quelconque des revendications 3 ou 4, caractérisé en ce que le vilebrequin (10) comprenant au moins un maneton et au moins un tourillon raccordé entre eux par au moins un bras, la came (12) est disposée dans la zone de raccordement entre le bras et le tourillon.Arrangement according to any one of claims 3 or 4, characterized in that the crankshaft (10) comprising at least one crank pin and at least one trunnion connected to each other by at least one arm, the cam (12) is arranged in the zone connection between the arm and the trunnion. Agencement selon la revendication 5, caractérisé en ce que la came (12) est formée directement dans la matière constitutive du bras.Arrangement according to claim 5, characterized in that the cam (12) is formed directly in the constituent material of the arm. Agencement selon l'une des revendications 2 à 6, caractérisé en ce que le vilebrequin (10) étant entrainé en rotation par au moins un piston appliquant au vilebrequin (10) des efforts de combustion, la pompe d'injection (11) est orientée spatialement de sorte que l'axe de translation (D3A) du poussoir (13) est sensiblement perpendiculaire à l'axe de rotation (D2) du vilebrequin (10) et forme un angle (α) compris entre 45° et 135° avec la direction (D1) des efforts de combustion.Arrangement according to one of Claims 2 to 6, characterized in that the crankshaft (10) is rotated by at least one piston at the crankshaft (10) combustion forces, the injection pump (11) is spatially oriented so that the translation axis (D3 A ) of the pusher (13) is substantially perpendicular to the axis of rotation (D2) crankshaft (10) and forms an angle (α) between 45 ° and 135 ° with the direction (D1) of the combustion forces. Agencement selon l'une des revendications 2 à 6, caractérisé en ce que le vilebrequin (10) étant entrainé en rotation par au moins un piston appliquant au vilebrequin (10) des efforts de combustion, la pompe d'injection (11) est orientée spatialement de sorte que l'axe de translation (D3B) du poussoir (13) est sensiblement perpendiculaire à l'axe de rotation (D2) du vilebrequin (11) et forme un angle (β) compris entre 0° et 45° avec la direction (D1) des efforts de combustion.Arrangement according to one of claims 2 to 6, characterized in that the crankshaft (10) being rotated by at least one piston applying to the crankshaft (10) combustion forces, the injection pump (11) is oriented spatially so that the translation axis (D3 B ) of the pusher (13) is substantially perpendicular to the axis of rotation (D2) of the crankshaft (11) and forms an angle (β) between 0 ° and 45 ° with the direction (D1) of the combustion forces. Agencement selon la revendication 8, caractérisé en ce que la pompe d'injection (11) est située, par rapport au vilebrequin (10), du même côté que ledit au moins un piston.Arrangement according to claim 8, characterized in that the injection pump (11) is located, relative to the crankshaft (10), on the same side as said at least one piston. Agencement selon l'une quelconque des revendications 7 ou 9, caractérisé en ce que l'axe de translation (D3A, D3B) du poussoir (13) de la pompe d'injection (11) et l'axe de rotation (D) du vilebrequin (10) sont sécants.Arrangement according to any one of claims 7 or 9, characterized in that the translation axis (D3 A , D3 B ) of the pusher (13) of the injection pump (11) and the axis of rotation (D ) of the crankshaft (10) are secant. Agencement selon l'une quelconque des revendications 8 ou 9, caractérisé en ce que l'axe de translation (D3c) du poussoir (13) de la pompe d'injection (11) est décalé par rapport à l'axe de rotation (D2) du vilebrequin (10) et en ce que l'axe de translation (D3c) du poussoir (13) forme un angle (δ) compris entre 0° et 25° avec la direction (D1) des efforts de combustion.Arrangement according to any one of claims 8 or 9, characterized in that the translation axis (D3c) of the pusher (13) of the injection pump (11) is offset relative to the axis of rotation (D2 ) of the crankshaft (10) and in that the translation axis (D3c) of the pusher (13) forms an angle (δ) between 0 ° and 25 ° with the direction (D1) of the combustion forces. Véhicule automobile comprenant au moins un agencement selon l'une quelconque des revendications précédentes.Motor vehicle comprising at least one arrangement according to any one of the preceding claims.
EP16151783.4A 2015-02-05 2016-01-19 Fuel injection pump driven by the crankshaft of the internal combustion engine supplied by the pump Withdrawn EP3054145A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1550897A FR3032488B1 (en) 2015-02-05 2015-02-05 FUEL INJECTION PUMP DRIVEN IN MOTION BY THE CRANKSHAFT OF THE THERMAL ENGINE POWERED BY THE PUMP

Publications (1)

Publication Number Publication Date
EP3054145A1 true EP3054145A1 (en) 2016-08-10

Family

ID=52808021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16151783.4A Withdrawn EP3054145A1 (en) 2015-02-05 2016-01-19 Fuel injection pump driven by the crankshaft of the internal combustion engine supplied by the pump

Country Status (2)

Country Link
EP (1) EP3054145A1 (en)
FR (1) FR3032488B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2375030A2 (en) * 2010-04-07 2011-10-12 A. T. Süd GmbH Combustion engine with fuel pump
EP2385237A2 (en) * 2010-04-07 2011-11-09 A. T. Süd GmbH Combustion engine with fuel pump
WO2013160106A1 (en) * 2012-04-25 2013-10-31 Delphi Technologies Holding S.A.R.L. Fuel pump assembly
FR3011588A1 (en) * 2013-10-03 2015-04-10 Renault Sa DIESEL ENGINE COMPRISING AN INTEGRATED FUEL PUMP
WO2015113705A1 (en) * 2014-01-31 2015-08-06 Bayerische Motoren Werke Aktiengesellschaft Drive system of a high-pressure fuel pump, high-pressure fuel pump assembly and internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2375030A2 (en) * 2010-04-07 2011-10-12 A. T. Süd GmbH Combustion engine with fuel pump
EP2385237A2 (en) * 2010-04-07 2011-11-09 A. T. Süd GmbH Combustion engine with fuel pump
WO2013160106A1 (en) * 2012-04-25 2013-10-31 Delphi Technologies Holding S.A.R.L. Fuel pump assembly
FR3011588A1 (en) * 2013-10-03 2015-04-10 Renault Sa DIESEL ENGINE COMPRISING AN INTEGRATED FUEL PUMP
WO2015113705A1 (en) * 2014-01-31 2015-08-06 Bayerische Motoren Werke Aktiengesellschaft Drive system of a high-pressure fuel pump, high-pressure fuel pump assembly and internal combustion engine

Also Published As

Publication number Publication date
FR3032488B1 (en) 2018-12-07
FR3032488A1 (en) 2016-08-12

Similar Documents

Publication Publication Date Title
EP0058619B1 (en) Four-stroke combustion engine adapted for delivering temporary overpower
EP0460988B1 (en) Drive mechanism having a camshaft and force transmission means with roller
FR2512493A1 (en) INTERNAL COMBUSTION ENGINE
FR2461108A1 (en) VALVE CONTROL MECHANISM FOR INTERNAL COMBUSTION ENGINES
FR2866059A1 (en) Crankshaft`s angular position adjusting device for e.g. direct injection gasoline engine, has blocking device that blocks rotation of cam shaft and permits to activate drive wheel to rotate crankshaft once cam shaft is blocked
FR2928694A1 (en) ENGINE WITH VARIABLE VOLUME CHAMBER
FR2906332A1 (en) DEVICE FOR TRANSFORMING A LINEAR MOVEMENT INTO A ROTATION MOTION IN AN ADJUSTABLE MANNER
EP1543221B1 (en) Hydraulic valve actuator for reciprocating engine
EP3054145A1 (en) Fuel injection pump driven by the crankshaft of the internal combustion engine supplied by the pump
FR2744764A1 (en) TWO STROKE MOTOR WITH A MEANS OF CONTROL OF THE MOVEMENT OF THE VALVE
CH131437A (en) Internal combustion engine.
EP2715104A2 (en) Hydraulic transmission device and compact hydraulic starter
FR3073892A1 (en) DEACTIVATION OF THERMAL MOTOR CYLINDERS
FR2658863A1 (en) APPARATUS FOR ADJUSTING THE VALVE CONTROL OF AN INTERNAL COMBUSTION ENGINE.
EP3486524A1 (en) Assembly for internal combustion engine, in particular of a motor vehicle, comprising at least one camshaft, a crankshaft and a transmission member
EP3707366A1 (en) High pressure pump/crankshaft setting method
FR3050234A1 (en) ASSEMBLY FOR THERMAL ENGINE COMPRESSION RATE VARIATION SYSTEM
FR3044039B1 (en) ROTATION SHIFTING SYSTEM BETWEEN TWO ROUND MOUNTED TREES.
FR2870903A1 (en) Balance shaft driving system for internal combustion engine e.g. alternating heat engine, has spring to assure connection in rotation between sprocket and shaft and to exert axial thrust force to maintain sprocket against shaft`s axial stop
WO2023073142A1 (en) Device for rotating a wheel, comprising a hydraulic motor with radial pistons and means for locking the pistons in a retracted position
FR2732722A1 (en) Constant-stroke heat engine with adjustable compression ratio
FR3014515A1 (en) DEVICE FOR REGULATING THE ROTATION OF A TREE, IN PARTICULAR IN THE AUTOMOBILE DOMAIN
BE531687A (en)
FR3071885A1 (en) INTAKE COLLECTOR WITH REDUCED SIZE
FR2913466A1 (en) HYDRAULIC MOTOR WITH RADIAL PISTON WHICH CAN FORM HYDRAULIC STARTER.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

17P Request for examination filed

Effective date: 20170207

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

17Q First examination report despatched

Effective date: 20171207

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20180418