A method and a system for verifying normal operation of a negative pressure sensor of a brake booster is provided. The method and system verify whether the negative pressure sensor of the brake booster is in normal operation and the normal operation of the booster negative pressure sensor is detected by mutually verifying values measured by the booster negative pressure sensor and values measured by sensors that indirectly sense the booster negative pressure.

A method and a system for verifying normal operation of a negative pressure sensor of a brake booster is provided. The method and system verify whether the negative pressure sensor of the brake booster is in normal operation and the normal operation of the booster negative pressure sensor is detected by mutually verifying values measured by the booster negative pressure sensor and values measured by sensors that indirectly sense the booster negative pressure.

Various embodiments of a method and apparatus for an air charging system controller for an air braked vehicle are disclosed. The air charging system controller comprises an input for receiving conditions of the vehicle, an output for controlling a compressor in a normal mode and in a high demand mode and control logic. The control logic determines whether the vehicle meets a predetermined condition and controls the compressor in the high demand mode in response to the vehicle meeting the predetermined condition.

Various embodiments of a method and apparatus for an air charging system controller for an air braked vehicle are disclosed. The air charging system controller comprises an input for receiving conditions of the vehicle, an output for controlling a compressor in a normal mode and in a high demand mode and control logic. The control logic determines whether the vehicle meets a predetermined condition and controls the compressor in the high demand mode in response to the vehicle meeting the predetermined condition.

A system for and a method of controlling driving of a continuously-operable electronic vacuum pump includes determining conditions for allowing and disallowing first and second electronic vacuum pumps to operate for each braking situation according to vehicle state information associated with braking. The first and second electronic vacuum pumps are driven individually or concurrently according to the determined braking situation. Thus, an optimal negative pressure optimal suitable for the vehicle state information is easily supplied to a booster.

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 assembly of a traction control system of a hydraulic vehicle brake system includes a hydraulic block, a motor block, and a control device. The hydraulic block includes at least one electric hydraulic valve and at least one electric hydraulic pump arranged therein. The motor block includes an electric motor arranged therein. The electric motor is configured to drive the at least one hydraulic pump. The control device is configured to control the at least one hydraulic valve, the at least one hydraulic pump, and the electric motor. The control device has two structurally separate control units, which include a first control unit with signal components and a second control unit with power components.

A hydraulic assembly of a traction control system of a hydraulic vehicle brake system includes a hydraulic block, a motor block, and a control device. The hydraulic block includes at least one electric hydraulic valve and at least one electric hydraulic pump arranged therein. The motor block includes an electric motor arranged therein. The electric motor is configured to drive the at least one hydraulic pump. The control device is configured to control the at least one hydraulic valve, the at least one hydraulic pump, and the electric motor. The control device has two structurally separate control units, which include a first control unit with signal components and a second control unit with power components.

A method and system supply compressed air to a vehicle as required, more particularly a rail vehicle, wherein at least the primary air requirement of the rail vehicle for operating a pneumatic braking system is covered by a primary air compressor that is connected to a primary tank air line and wherein additional compressed air for operating auxiliary units is generated by at least one electromotive auxiliary air compressor having a lower delivery output than the primary air compressor. When the vehicle is parked, only the at least one auxiliary air compressor is used to generate compressed air as required, the air being used, whilst the vehicle is parked, to maintain permanent contact between a current collector that is actuated by a pneumatic actuating drive and an electric supply line.

A method and system supply compressed air to a vehicle as required, more particularly a rail vehicle, wherein at least the primary air requirement of the rail vehicle for operating a pneumatic braking system is covered by a primary air compressor that is connected to a primary tank air line and wherein additional compressed air for operating auxiliary units is generated by at least one electromotive auxiliary air compressor having a lower delivery output than the primary air compressor. When the vehicle is parked, only the at least one auxiliary air compressor is used to generate compressed air as required, the air being used, whilst the vehicle is parked, to maintain permanent contact between a current collector that is actuated by a pneumatic actuating drive and an electric supply line.