摘要:
This drive system (1) for a motor vehicle comprises a top end (5) and a bottom end (7) that are coupled together, a kinematic drive chain, a compressor (35), a main lubrication system, that comprises a main circuit (105) and a main pump (103), which supplies at least the bottom end with a main lubricant via the main circuit, and a secondary lubrication system, that comprises at least one secondary circuit (115) separated from the main circuit and at least one secondary pump (113) separate from the main pump, the secondary pump supplying the top end and/or the compressor with a secondary lubricant via the secondary circuit (115). The secondary lubrication system comprises at least one secondary actuator (119) mechanically separate from the kinematic drive chain and that drives the secondary pump (113) to supply the top end (5) and/or the compressor (35) with the secondary lubricant.
摘要:
The present invention relates to a chain drive for an internal combustion engine having a drive chain wheel, at least one driven chain wheel, a drive chain coupling the chain wheels, a pivotally mounted tensioning rail which is pressed against one of the strands of the drive chain, and a sliding rail which abuts another of the strands of the drive chain, wherein the tensioning rail and the sliding rail have a common base body which is mounted such that it can pivot about a common pivot axis, and the arcuate portion of a sliding surface of the sliding rail which comes into contact with the drive chain during operation has an axis of curvature or axes of curvature, and the arcuate portion of a sliding surface of the tensioning rail which comes into contact with the drive chain during operation has an axis of curvature or axes of curvature, and the distance of the axis of curvature which is associated with the sliding rail or the average distance of the axes of curvature which are associated with the sliding rail to the pivot axis of the base body is smaller than the distance of the axis of curvature which is associated with the tensioning rail or the average distance of the axes of curvature which are associated with the tensioning rail to the pivot axis of the base body, wherein the distance of the axis of curvature which is associated with the sliding rail or the average distance of the axes of curvature which are associated with the sliding rail to the pivot axis of the base body is smaller than 6 times, preferably smaller than 4.5 times, the chain pitch of the drive chain. The invention also relates to a combination rail which is appropriate for use with this chain drive.
摘要:
Lubricating and cooling oil circuit of an internal combustion engine comprising at least one cylinder/piston, inlet and exhaust valves and actuation means of the inlet and exhaust valves and switching means for controlling said actuation means in order to activate/deactivate an auxiliary valve control strategy, such as an engine brake and/or an internal EGR, the oil circuit (LC) comprising a main gallery (MG) to supply two or more engine oil consumers including said switching means (SW), and a nozzle (N) to produce an oil jet to cool said piston, wherein the oil circuit comprises a connection pipe (PP) to supply said nozzle and valve means (VM) on said connection pipe (PP) configured to increase throttling or shut-off of said connection pipe, in order to increase an oil pressure within said main gallery when said switching means are activated. (Fig. 1).
摘要:
An oiling device for an engine includes: a crank case which freely rotatably supports a crank shaft and also which stores oil at its lower part; an oil strainer which is so arranged as to be fixed in the crank case; and an oil pump which suctions the oil at the lower part in the crank case via the oil strainer. In the oiling device, the machining efficiency can be improved by reducing the man-hour of machining to a crank case to thereby decentralize machining processes, and also the oil temperature can be reduced. A crank case cover (53) covering part of a crank case (21) and coupled with the crank case (21) is provided with an oil suction passage (78) which leads to an oil pump (68), and an oil strainer (61) communicates with the oil suction passage (78) via a connecting pipe (79) which is a member different from the crank case (21).
摘要:
A variable capacity fluid pump that can be controlled independently of the rotation of the engine is provided. The fluid pump comprises a planetary gear mechanism 12 having a first gear 20, second gears 22 and a third gear 18. The second gears are connected to a crankshaft of the engine and transmits a rotational force of the crankshaft. The third gear is connected to the fluid pump. The fluid pump further comprises braking means 14 connected to the first gear. The breaking means generates a braking force upon the first gear. The fluid pump further comprises a one-way clutch 16 provided between the second gears and the third gear. The braking means controls a rotational speed of the first gear so that a rotational speed of the fluid pump is controlled independently of a rotational speed of the crankshaft of the engine.
摘要:
A hydraulic pump in the form of an oil pump (12) for a vehicle engine has both its pinion (21) which is driven by the engine's crankshaft (3), and a ring-gear (22) which cooperates with the pinion (21), incorporated in an end-cover (11) fastened to the end of the engine block (2). A cap (15) is inserted in a collar (14) on the side of the end-cover facing away from the engine and is only held in position there by means of a locking ring (17) which engages with a groove (16) in the collar and presses the cap (15) towards the engine. Outside the oil pump, a partly socket-shaped belt pulley (7) is mounted on the crankshaft (3) and its socket-shaped portion substantially grips the collar. Fitting and removal are thus simplified and engine overall length reduced. Simplified sealing also reduces oil leakage risks.
摘要:
Pompe hydraulique sous forme d'une pompe à huile (12) conçue pour un moteur de véhicule automobile et dont le pignon (21) actionné par le vilebrequin du moteur (3), ainsi qu'une couronne de train planétaire (22) coopérant avec le pignon (21), sont intégrés dans un couvercle d'extrémité (11) fixé à l'extrémité du bloc moteur (2). Une garniture (15) est introduite dans un collier (14) situé sur le côté du couvercle d'extrémité opposé au moteur et est maintenue en place uniquement par l'intermédiaire d'une bague de verrouillage (17) venant en contact avec une rainure (16) située dans le collier et poussant la garniture (15) contre le moteur. A l'extérieur de la pompe à huile, une poulie de courroie partiellement en forme de douille (7) est montée sur le vilebrequin (3) et ladite partie en forme de douille serre pratiquement le collier. Ce dispositif facilite le montage et le démontage et réduit la longueur totale du moteur. Le système d'étanchéité simplifié réduit également les risques de fuite d'huile.
摘要:
An engine 10 has a crank shaft 20 which is provided inside a crankcase 12 and an oil pan 18 and penetrating the crankcase 12 and the oil pan 18 in an up-down direction. Inside the oil pan 18, an oil pump 96 and an oil strainer 102 are provided. The oil pump 96 is disposed coaxially with the crank shaft 20 and is driven by the crank shaft 20. The crank shaft 20 has one side and another side respectively supported pivotably by the platy support member 70 and the crankcase 12. The support member 70 is provided in the crankcase 12 in such a fashion that two surfaces of the support member 70 are covered by the crankcase 12 and the oil pan 18 and there can be communication between the crankcase 12 and the oil pan 18.