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:
Nov. 06, 2001
Filed:
Mar. 30, 2000
John Edward Cook, Chatham, CA;
Scott Hussey, Clinton Township, MI (US);
Siemens Canada Limited, Mississauga, CA;
Abstract
An internal combustion engine cylinder head (,) has an exterior wall that contains a walled compartment (,). A wall of that compartment is exposed to an internal coolant passage (,) through which liquid coolant circulates. An exhaust gas passageway (,) running through the compartment has an exhaust gas entrance (,) into the compartment and an exhaust gas exit (,) from the compartment. The compartment comprises a receptacle (,) that intersects the exhaust gas passageway between the entrance and the exit. An EGR valve (,) disposed on the exterior wall comprises a base (,) that has an inlet port (,) and an outlet port (,) and that is disposed within the receptacle with the inlet port open to the entrance via the passageway and the outlet port open to the exit via the passageway. As hot exhaust gas is recirculated, coolant that circulates through the coolant passage aids in limiting peak temperatures to which the valve may be subjected.