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:
Apr. 17, 2001
Filed:
Sep. 10, 1999
Jason J. McConnell, Jackson, MI (US);
David W. Deppe, Marshall, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
An exhaust gas recirculation (EGR) assembly (,) for an internal combustion engine, including an EGR valve (,) having a valve stem (,) reciprocating within a housing (,), between open (FIG.,) and closed positions. Preferably, the EGR assembly is mounted on the exhaust manifold (,), and the EGR valve can communicate exhaust gas back to the intake manifold (,) in a known manner. The EGR assembly includes an electric motor (,), and a gear train (,) to move the EGR valve (,) in response to changes in an electrical input signal. A plurality of power electronic components (,) are disposed within a controls housing (,), which defines a slot (,) in face-to-face relation to a cooling chamber (,) defined by the housing (,) surrounding the valve stem (,). The cooling chamber (,) and the slot (,) cooperate to define a coolant passage, and the valve stem (,) and the power components (,) are in close proximity to the coolant passage, thus permitting the use of less expensive electrical components, rated for relatively lower temperatures.