Pressure control device for a vehicle and method for controlling pressure

Abstract

The invention relates to a pressure control device (7, 8, 9, 18, 22, 23, 24, 57, 58, 60, 70, 71, 80, 81, 82, 90) for a vehicle (100), wherein the vehicle (100) comprises at least one drive motor (101) for producing a driving force of the vehicle, a compressed-air supply and storage system (12), and an air compressor (1) that is or can be coupled to the drive motor (101) of the vehicle, and the pressure control device (7, 8, 9, 18, 22, 23, 24, 57, 58, 60, 70, 71, 80, 81, 82, 90) comprises at least one electronic control unit (18) and at least one valve device (7, 8, 9, 23, 24, 57, 58, 60, 70, 71, 80, 81, 82, 90) for controllably connecting a compression chamber (4) of the air compressor (1) to the compressed-air supply and storage system (12), wherein the pressure control device has the following characteristics: a) the pressure control device (7, 8, 9, 18, 22, 23, 24, 57, 58, 60, 70, 71, 80, 81, 82, 90) is designed to connect the compression chamber (4) to the compressed-air supply and storage system (12) in a compressed-air production mode in order to convey compressed air from the compression chamber (4) into the compressed-air supply and storage system (12), b) the pressure control device (7, 8, 9, 18, 22, 23, 24, 57, 58, 60, 70, 71, 80, 81, 82, 90) is designed to connect the compression chamber (4) to the compressed-air supply and storage system (12) in a compressed-air expansion mode in order to convey compressed air from the compressed-air supply and storage system (12) into the compression chamber (4), c) the pressure control device (7, 8, 9, 18, 22, 23, 24, 57, 58, 60, 70, 71, 80, 81, 82, 90); is designed to switch from the compressed-air production mode to the compressed-air expansion mode and vice versa by electrically actuating one or more electrically operable valves (7, 23, 24, 57, 58, 60, 70, 71, 80, 81, 82, 90) of the valve device (7, 8, 9, 23, 24, 57, 58, 60, 70, 71, 80, 81, 82, 90) by means of the electronic control unit (18). The invention further relates to an advantageous vehicle compressed-air system and to an air compressor adapted thereto. The invention further relates to a method for controlling pressure in a vehicle.

Description

technical field [0001] The invention relates to a pressure control device for a vehicle according to claim 1 . The invention also relates to a vehicle compressed air system according to claim 14 and a compressed air compressor adapted thereto according to claim 17 . The invention also relates to a method for pressure control in a vehicle according to claim 18 . Background technique [0002] In the field of commercial vehicles, that is to say trucks and buses, the use of compressed air braking systems is common. Accordingly, such vehicles have elements for generating and storing compressed air, such as compressors and storage containers. The compressor is usually driven by the drive motor of the vehicle, wherein a fixed and partially also detachable coupling is provided between the compressor and the drive motor, for example via a controllable clutch. [0003] It follows from DE 10 2005 039 281 A1 that a compressor is used as an additional drive unit of a vehicle. In this...

AI Technical Summary

Problems solved by technology

[0004] However, the use of cam drives with cam phasers is mechanically and constructively complex and expensive

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