A system and method for slowing a vehicle. Road conditions around the vehicle are monitored, and determined if those road conditions are hazardous. An engine control unit is informed of the hazardous road conditions and alters the operation of the engine control unit in response to the hazardous road conditions. When an operator of the vehicle desires to slow the vehicle down, an indication is received indicating the intent to slow the vehicle down. The vehicle is then slowed based upon the altered operation of the engine control unit by applying a vacuum to increase a manifold vacuum of the engine.

The disclosure relates to a compressor assembly for an air supply unit of a vehicle. The compressor assembly includes: a compressor for providing pressurized air and having a compressor housing, at least one mounting bracket, wherein the at least one mounting bracket is fixed to the compressor housing, and, for each mounting bracket, one bearing for connecting the compressor assembly to a housing structure of the air supply unit. The bearing includes a flexible, hollow bellow, adapted to receive a gaseous medium, wherein the bellow includes at least one mounting feature, in particular recess, adapted to receive the mounting bracket, and the bellow is adapted to be pneumatically charged from an unpressurized state into a pressurized state, wherein the mounting feature is adapted to mechanically connect the bellow to the mounting bracket in a pressurized state via a positive lock.

The disclosure relates to a compressor assembly for an air supply unit of a vehicle. The compressor assembly includes: a compressor for providing pressurized air and having a compressor housing, at least one mounting bracket, wherein the at least one mounting bracket is fixed to the compressor housing, and, for each mounting bracket, one bearing for connecting the compressor assembly to a housing structure of the air supply unit. The bearing includes a flexible, hollow bellow, adapted to receive a gaseous medium, wherein the bellow includes at least one mounting feature, in particular recess, adapted to receive the mounting bracket, and the bellow is adapted to be pneumatically charged from an unpressurized state into a pressurized state, wherein the mounting feature is adapted to mechanically connect the bellow to the mounting bracket in a pressurized state via a positive lock.

A vehicle air management system is provided. The vehicle air management system comprises an air tank and a boost air tank. Based on a signal indicative of an air consumption level of at least one air consumer, a control unit is configured to control the vehicle air management system to deliver pressurized air from the boost air tank to be supplied to an air compressor.

A gasket device for a pneumatic valve system, in particular of a commercial vehicle, comprises gasket part being adapted to be inserted into at least a groove of a contact face of a first casing part, e.g. an adapter, the gasket part comprising at least one gasket chamber for sealingly connecting device channels of mounted casing parts; a body part being adapted to be received in a valve seat of the casing part; at least one spring part connecting the body part and the gasket part,
wherein the body part is moveable in an airflow direction relative to the gasket part by bending or stretching the at least one spring part,
wherein in an unbiased basic condition of the gasket device the body part is positioned above a gasket plane defined by the gasket chamber. The gasket device is made as a single part of a flexible, elastic material.

A turbocharged engine air system is disclosed. The engine air system includes at least two devices requiring vacuum, a turbocharger having a compressor fluidly connected to an intake manifold of an engine, a first evacuator and a second evacuator. The first evacuator defines a first motive section, a first discharge section, and at least two first suction ports. The first motive section of the first evacuator is fluidly connected to the compressor, and each of the at least two first suction ports are fluidly connected to one of the at least two devices requiring vacuum. The second evacuator defines a second motive section, a second discharge section, and at least two second suction ports. The second motive section of the second evacuator is fluidly connected to at least one of the at least two devices requiring vacuum.

A turbocharged engine air system is disclosed. The engine air system includes at least two devices requiring vacuum, a turbocharger having a compressor fluidly connected to an intake manifold of an engine, a first evacuator and a second evacuator. The first evacuator defines a first motive section, a first discharge section, and at least two first suction ports. The first motive section of the first evacuator is fluidly connected to the compressor, and each of the at least two first suction ports are fluidly connected to one of the at least two devices requiring vacuum. The second evacuator defines a second motive section, a second discharge section, and at least two second suction ports. The second motive section of the second evacuator is fluidly connected to at least one of the at least two devices requiring vacuum.

A parking brake system for a vehicle includes an at least partially bistable valve unit to generate a control pressure for controlling at least one function of the parking brake system, and a relay valve which receives the control pressure from the valve unit and either pressurizes or bleeds at least one spring-loaded cylinder according to the control pressure. The valve unit is integrated into a first module integrated into a compressed air supply unit, and the relay valve is arranged in a second module which is arranged at a distance from the first module and the compressed air production system.

A parking brake system for a vehicle includes an at least partially bistable valve unit to generate a control pressure for controlling at least one function of the parking brake system, and a relay valve which receives the control pressure from the valve unit and either pressurizes or bleeds at least one spring-loaded cylinder according to the control pressure. The valve unit is integrated into a first module integrated into a compressed air supply unit, and the relay valve is arranged in a second module which is arranged at a distance from the first module and the compressed air production system.

Methods for controlling vacuum within a brake booster by modifying powertrain operation include determining an intake manifold vacuum in response to actuation of a brake pedal. Increasing the intake manifold vacuum if the brake booster vacuum is less than a desired brake booster vacuum. In some embodiments, the transmission is downshifted to increase engine speed and intake manifold vacuum. In other embodiments, engine torque is reduced to increase intake manifold vacuum and the torque of the electric machine is increased to maintain a constant output torque.