A hydraulic block for a hydraulic unit for generating brake pressure and regulating brake pressure in a hydraulic vehicle power brake system. The hydraulic block includes a projection that extends the power cylinder bore which passes transversely through the hydraulic block on a large side of the…
An air dryer apparatus is provided for a vehicle air brake charging system. The air dryer apparatus comprises an air dryer governor assembly. The air dryer governor assembly includes a plastic sleeve having an external sleeve surface and an internal sleeve surface that defines a piston bore. The…
A miniaturized ABS hydraulic unit is provided. In an ABS hydraulic unit 100 where a pump 12 and valves 13, 14 are disposed in the inside of a hydraulic circuit 1 for making a hydraulic brake perform braking, and an antilock brake control of the hydraulic brake is performed by controlling the pump…
A supercharged internal combustion engine of the present invention is provided with a turbocharger (18) having a compressor (18b) in an air intake passage (24), a communication passage (52) connected between an upstream-side portion of the air intake passage (24) on the upstream side of a…
Method for managing a vehicle compressor, wherein the compressor (C) is driven in rotation by a vehicle engine (E). The stop pressure threshold (cut-off threshold) of the compressor is varied as an inverse function of a compressor speed of rotation. The compressor speed of rotation might be…
The invention refers to a compressed air system (100) for a motor vehicle with an air supply system (200), comprising: - an electric drive motor (8), which can be controlled for variable speed, - an air compressor (9) coupled to be driven by the electric drive motor (8), - an electric power supply…
Automotive vacuum pump (10;10') with a pump chamber housing (12) enclosing a pump chamber (13) and a pump rotor (16) comprising at least one shiftable vane (18) separating the pump chamber (13) in chamber partitions, whereby the vane (18) is provided with a vane body (19; 19') and with a separate…
In a vehicle brake system (1), which starts an engine (50) for recovering a brake negative pressure of a servo unit (12) connected to an intake pathway (51) of the engine (50), a valve opening of a throttle valve (53) of the engine (50) is controlled in an opening direction when the engine is…
The method involves driving the low pressure pump of combustion engine directly or indirectly. The low pressure pump is turned on when starting pressure (p1) is reached, and is turned off when the switch-off pressure (p2) is reached. The operating state of the combustion engine is recorded and the…
The arrangement has resonance and/or damping volume (8) formed at combustion air intake duct (5). An additional aggregate return pipe (10) of the suction device for combustion air intake duct is extended to outside closed housing (7). A recess (6) is formed at resonance and/or damping volume in the…
An electric pump (1) includes a motor (14), a bracket (4) including a support surface (4a) arranged to be perpendicular to a rotation shaft (14a) of the motor and a bush attachment bore (5) provided to be perpendicular to the support surface, and a bush (6, 60, 61) fitted to the bush attachment…
The present invention relates to a method of bleeding a hydraulic braking system, comprising at least a hydraulic pump which, at its suction side, is in fluid conducting communication with a brake fluid reservoir and, at its pressure side, is in fluid conducting communication with at least a brake…
A brake hydraulic pressure control apparatus for a vehicle (1) includes: a base member (10); a control housing (30) including a storage space (36) for storing an electromagnetic valve (20) on one face (11) of the base member (10) and a coil assembly (32); and a pump driving motor (50) on a back…
A pressure intensifier for generating a relatively large force includes a plurality of pistons (32,110,50) driven in advancing and retracting directions. The pressure intensifier includes a rod (118) selectively drivable into a cavity (72) to amplify the force acting on one of the pistons. A valve…
The present invention relates to a vacuum pump for a vehicle. It is an object of the present invention to provide a vacuum pump for a vehicle capable of decreasing a friction noise in such a manner that an eccentric cam part is formed in a center of a housing plate and the construction of the…
The control method uses a pressure regulator with a discharge valve (14) for controlling the compressor (3) of the pressurized air supply unit (1) and a regeneration valve (11) for controlling the regeneration air quantity, in accordance with the regeneration air requirement indicated by an…
The piston compressor for compressing gas and air has a gas supply and discharge pipe (6,7). To compensate a time-changeable mass or volume flow through the pipes there are compensation means (10) which are regulated in dependence on the gas pressure detected by the sensor (8) so that the gas exit…
The hydraulic unit has a pump element (3), a drive (2) for driving the pump element, and a reservoir (4) for hydraulic fluid. The pump element and the reservoir are arranged directly adjacent each other. An outlet of the pump element opens into the reservoir either directly or via a very short…
A flexible vacuum reservoir and connection element (1) is provided, comprising an elongated element (20) equipped with at least one supplying and vacuum-keeping valve element (30) to be connected to a vacuum suction pump (60), and at least one outlet (50) adapted to be connected to a respective…
A compressor is disclosed generally comprising a housing (22) with inlet and outlet ports, a piston (36) disposed therein, a first chamber (50) in fluid communication with the inlet port (48), and a second chamber (52) in fluid communication with the first chamber (50). The first and second…
A brake pedal emulator mechanism (12) includes a foamed plastic elastomeric piece (20) compressed by a brake pedal which piece has a variable spring rate and produces hysteresis when compressed to emulate the brake pedal feel of a conventional hydraulic brake system. The foamed plastic (20) may…
Separated into control groups (48,49), consumer circuits (I-V) with partly varied pressure levels link to a compressed air acquisition unit. A compressor (4) is connected according to each air consumption in single consumer circuits by a signal generated by control electronics (29) between idling…
The compressor arrangement has a compressor unit (3) driven by an internal combustion engine (1) and an auxiliary compressor unit (8) fluidically in parallel with the engine-driven compressor unit and driven by an electric motor (7) with a control unit (6) that indirectly controls the additional…
The method involves generating low pressure compressed air from ambient air for low pressure loads (7a,7b) with a compressor unit (3) driven by an internal combustion engine (1) controlled by a control unit (14). Compressed air at a higher pressure for high pressure loads (11a,11b) is produced from…
A control method of a hydraulic pressure source-driven type vehicle hydraulic pressure brake system in which no irritating noises or vibrations are produced during stoppage of the vehicle and which does not consume electric power in waste. When the vehicle stops and the surroundings become quiet…
A method is described for monitoring the performance of a sensor used to measure a vehicle or engine operating parameter in an automotive vehicle having an internal combustion engine (10) with an intake manifold (44) coupled through a check valve (34) to a brake booster (130). The method comprises…
A direct injection engine is coupled to a vacuum brake booster(130) wherein vacuum created from engine pumping is used to supplement driver braking force. The brake booster (130) is coupled through a check valve (134) to the engine intake manifold (44). A method is disclosed for estimating pressure…