Abstract:
The invention concerns a method for controlling/commanding a hydraulic module of a hybrid vehicle comprising two engines housed in a right- or left-hand side portion, each engine comprising at least one piston and one cylinder, one of said two elements being floating and being rigidly connected to a plate, each engine being connected to at least one low pressure or high pressure hydraulic circuit and converting the fluid energy into drive torque transmitted to a drive wheel with which it is associated, the method carrying out, on request of a torque value transmitted by the control/command of the power train, a torque regulation, characterised in that the regulation is carried out separately for the portions on the basis of the measurements of high and low pressure differences (53) of the circuit, the angular position (51, 54) of the respective portion and the speed (55, 52) of the drive wheel associated with the portion.
Abstract:
The invention relates to a compact hydraulic module (11) for providing driving power to a vehicle, including a casing (16) in which a first (14) and second (15) hydraulic engine, mounted opposite each other, are accommodated, one of the two engines being rotatably supported by the other, each engine including a valve plate (12), a cylinder (8), a plate (9), and axial pistons on knuckles (6, 7) which are arranged between the plate and the cylinder and which engage therewith. Said hydraulic engines convert the energy from a pressurized fluid into mechanical energy in the form of torque driving a differential, which is contained in the same housing and the output shafts (3) of which are coupled to the drive wheels of the vehicle. Said differential comprises an axial coupling member (1) which is capable of coupling the hydraulic engines together and which is configured so as to distribute the torque to the output shafts, wherein the differential is rotatably mounted inside the hydraulic engine, and the rotational axis (XX') of the hydraulic engine coincides with the rotational axis of the differential.
Abstract:
The invention pertains to a lubrication device for the internal mechanics of a transmission of a vehicle, in particular a motor vehicle. According to the invention, the two front faces (11, 12) of the hub (3) and the pinion (4) together define at least one groove for conveying lubricant fluid from the inner walls of the hub and the pinion to the lateral edges of those opposite faces (11, 12) of the hub and the pinion, and at least one storage pouch (14) for that liquid on the periphery of those opposite faces (11, 12) of the hub and the pinion in order to lubricate the adjacent synchronizing device for the transmission (6).
Abstract:
A compact hydraulic unit (12) for providing a vehicle with drive power, comprising a housing (16) in which a hydraulic motor (11) is housed comprising a distribution plate (13), a plate (17) supporting floating cylinders (9), a plate (3) axially holding the floating cylinders on the support plate, arranged to either side of a common fixed plate (10) and fixed pistons (6, 7) arranged between the plate and the floating cylinders and cooperating with them; said hydraulic motor converting the energy coming from a pressurised fluid into mechanical energy in the form of torque driving a differential, contained in the same housing, and wherein the output shafts (18) are coupled to the drive wheels of the vehicle; said differential comprising a casing containing planet pinions (1) engaging with planetary gears (2) integral with the output shafts of the differential, coupled to the drive wheels of the vehicle and configured to distribute the torque to the output shafts, wherein the differential is mounted in rotation inside the hydraulic motor, and the axis of rotation (XX') of the hydraulic motor coincides with the axis of rotation of the differential.
Abstract:
The invention relates to a device (10) for hydraulically controlling a gearbox including at least one sliding gear set in motion by a fork, comprising at least one hydraulic actuator (21) capable of moving the fork and at least one solenoid valve (19, 20) that is capable of changing the state of the hydraulic actuator (21) by means of the pressure differential between a high-pressure accumulator (11) and a low-pressure accumulator (15). The device is characterized in that it further comprises a very high-pressure accumulator (27), the pressure differential between the low-pressure accumulator (15) and the very low-pressure accumulator (27) enabling the solenoid valve (19, 20) to change the state of the actuator (21).