Disclosed is a piston pump for a brake system installed in a bore of a modulator block communicating with an inlet port and a discharge port, wherein the piston pump includes: a cylinder unit provided to reciprocate within the bore; a piston unit having one end fixed and the other end dividing the inside of the cylinder unit into a first chamber and a second chamber and configured to expand or reduce the internal spaces of the first chamber and the second chamber by reciprocating movement of the cylinder unit; a first inlet valve installed in the cylinder unit to open and close an one-way flow of fluid from the inlet port to the first chamber; a second inlet valve installed in the cylinder unit to open and close an one-way flow of fluid from the inlet port to the second chamber; and an outlet valve to open and close an one-way flow of fluid from the first chamber or the second chamber to the discharge port.

A method for operating a pump motor of a control device of a braking system. The control device has the pump motor, a valve device having at least one electrically operable switching valve, a first electric supply connection connectable electrically to the pump motor and a second electric supply connection connectable electrically to the valve device, an electric setpoint operating current being predetermined for the pump motor, and the pump motor being connected electrically to the first supply connection, so that the setpoint operating current is provided at least partially through the first supply connection. It is provided to connect the pump motor electrically to the second supply connection, so that the setpoint operating current is provided at least partially through the second supply connection.

Method for venting a pneumatic system of a vehicle, pneumatic system and vehicle Method for venting a pneumatic system (1) of a vehicle, the pneumatic system (1) comprising an air compressor (4), a pneumatic circuit (2), an air pressure management system (6) in communication with the air compressor (4) and the pneumatic circuit (2), and a control unit, the method comprising: —while pressure in the pneumatic circuit (1) is less than a cut-out pressure, supplying the pneumatic circuit (2) with compressed air from the air compressor (4) operated at an operating speed through the air pressure management system (6), —once pressure in the pneumatic circuit (2) reaches the cut-out pressure, lowering pressure in the pneumatic circuit (2) to a target pressure, the air compressor (4) being operated at at least one deflating speed lower than the operating speed, the deflating speed being non null, —after pressure in the pneumatic circuit (2) has reached the cut-out pressure, releasing compressed air in the air pressure management system (6) to the outside environment.

The invention provides an operation system for a vehicle, comprising an internal combustion engine (1) comprising a cylinder (301, 302), and an exhaust guide (500, 501, 502) being arranged to guide a gas flow from the cylinder (301, 302) to the atmosphere, wherein the vehicle operation system further comprises a pneumatic system (660), and an air conduit (661) connecting the pneumatic system (660) with the exhaust guide (500, 501, 502) for allowing a flow of compressed air from the pneumatic system into the exhaust guide (500, 501, 502).

A hydraulic block for a hydraulic power vehicle brake system including a slip control. A bore, which communicates through a circumferential groove with a receptacle of a pedal travel simulator, is run through parallel to a motor side of the hydraulic block between the motor side and a master brake cylinder bore in the hydraulic block and is connected through a transverse bore with a further bore parallel to the motor side, which connects the master brake cylinder bore with a connection for a pressureless brake fluid reservoir, which is attachable to the hydraulic block. The bores form a return of the pedal travel simulator, which has a low resistance to flow and allows for a closed system.

A control device including a valve-opening control unit that reduces the current value below the holding current value and increases the opening degree of the differential pressure adjustment valve when an increase in a manipulated variable of a braking operation member has been detected while holding control is being performed; and a valve-closing control unit that, when a decrease in the manipulated variable of the braking operation member has been detected while the opening degree of the differential pressure adjustment valve has been increased by the valve-opening control unit, performs a pushing process of increasing the current value above the holding current value and closing the differential pressure adjustment valve, and a holding process of setting the current value to the holding current value after the pushing process has ended.

A hydraulic assembly, particularly for supplying a brake circuit of a vehicle brake system with fluid at brake pressure, includes a throttle element, which in the unpressurized state rests with an upper side on a first support and with an underside on a second support, the supports being formed on opposite sides of the gap. The throttle device advantageously dispenses with a spring element for axial pre-tensioning, is accordingly of compact and cost-effective construction and is moreover easy to assemble.

A hydraulic assembly, particularly for supplying a brake circuit of a vehicle brake system with fluid at brake pressure, includes a throttle element, which in the unpressurized state rests with an upper side on a first support and with an underside on a second support, the supports being formed on opposite sides of the gap. The throttle device advantageously dispenses with a spring element for axial pre-tensioning, is accordingly of compact and cost-effective construction and is moreover easy to assemble.

A method of mitigating greenhouse gases by producing compressed air supply for pneumatic instrument air powered measurement and control systems in place of process methane fuel gas. Exploiting ancillary industrial engines when present, by adding an air compressor designed for commercial truck and equipment air brake systems, that is affixed to and energized by said industrial engine, as an accessory to said engine wherein the primary product and function of the engine is to supply power for larger system processes and the production of pneumatic air is a secondary product. Eliminating the necessity of adding standalone air compressors for instrument air supply when applicable and the accumulative carbon foot print associated with the standalone air compressor through energy generation and or carbon emissions.

A method of mitigating greenhouse gases by producing compressed air supply for pneumatic instrument air powered measurement and control systems in place of process methane fuel gas. Exploiting ancillary industrial engines when present, by adding an air compressor designed for commercial truck and equipment air brake systems, that is affixed to and energized by said industrial engine, as an accessory to said engine wherein the primary product and function of the engine is to supply power for larger system processes and the production of pneumatic air is a secondary product. Eliminating the necessity of adding standalone air compressors for instrument air supply when applicable and the accumulative carbon foot print associated with the standalone air compressor through energy generation and or carbon emissions.