The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2006
Filed:
Apr. 27, 2005
Darrin W Hurley, Brownstown, MI (US);
Darrin W Hurley, Brownstown, MI (US);
DaimlerChrysler Corporation, Auburn Hills, MI (US);
Abstract
An evaporative emission control and leak detection system for a motor vehicle is provided. The system is in fluid communication with a fuel tank, an engine, and a carbon canister and includes an integrated valve module that is in fluid communication with the carbon canister and the atmosphere. The module provides for venting of the system when exposed to predetermined high negative and positive pressure conditions. The module includes a switch mechanism that is operable to indicate when the system is in a low negative pressure condition. The module further includes a one-way high negative pressure valve and a one-way high positive pressure valve coupled to a fluid passage that bypasses the high negative pressure valve and the switch. The high negative and high positive pressure valves are positioned in a stacked arrangement along a common axis in the valve module.