US 8,910,739 B2Granted

Pressure control device and method for a vehicle

AssigneeWABCO GmbH

InventorsStefan Eisfelder, Ingo Stumberg, Christian Wiehen, Christoph Wilken

Life of this patent

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Abstract

A pressure control device for a vehicle comprises an electronic control unit and a valve device for controllably connecting a compression chamber of the vehicle's air compressor to the vehicle's compressed-air supply and storage system. The pressure control device is configured to (i) connect the compression chamber to the compressed-air supply and storage system in a compressed-air production mode to convey compressed air from the compression chamber into the compressed-air supply and storage system, (ii) connect the compression chamber to the compressed-air supply and storage system in a compressed-air expansion mode to convey compressed air from the compressed-air supply and storage system into the compression chamber, and (iii) 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 of the valve device.

Claims27

Dependent claims

A pressure control device for a vehicle, the vehicle having at least one engine for generating vehicle drive power, a compressed air supply and storage installation, and a compressed air compressor coupleable to the vehicle engine, the pressure control device comprising:

at least one electronic control apparatus;
and
at least one valve assembly, separate from and coupleable to the compressed air compressor, for controllably connecting a compression space of the compressed air compressor and the compressed air supply and storage installation, the pressure control device being configured to:
(a) connect the compression space to the compressed air supply and storage installation in a compressed air generation mode to convey compressed air from the compression space into the compressed air supply and storage installation,
(b) connect the compression space to the compressed air supply and storage installation in a compressed air expansion mode to convey compressed air from the compressed air supply and storage installation into the compression space, and
(c) change over between the compressed air generation mode and the compressed air expansion mode based on electrical actuation of at least one electrically actuatable valve of the at least one valve assembly using the at least one electronic control apparatus.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/582,197Filed 7 Mar 2011
Priority: DE 10 2010 020 67215 May 2010
Published: US 2013/0004339 A13 Jan 2013
Granted: 16 Dec 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B60T 1/10
Acting by retarding wheels: by utilising wheel movement for accumulating energy, e.g. driving air compressors
B60K 6/12
Prime-movers comprising combustion engines and mechanical or fluid energy storing means: by means of a chargeable fluidic accumulator
B60T 17/02
Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other…:…
Y02T 10/62
Other road transportation technologies with climate change mitigation effect: hybrid vehicles