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. 07, 2000
Filed:
Sep. 25, 1998
Randolph Kwok-Kin Chiu, Davison, MI (US);
David Kwo-Shyong Chen, Rochester Hills, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A glow sensor provides functions of both a diesel engine glow plug and an ion sensor for sensing engine combustion initiation and characteristics. A ceramic flat plate glow sensor element is carried by a tubular ceramic sleeve and insulating material in a metal shell. The element includes a ceramic flat plate having a glow tip, on an inner end with a heating element on one side and an ion sensor electrode on the other printed in electrically conductive ink. Printed conductors on both sides connect the heating element and ion sensor with an outer end of the glow sensor element for connection with an electric power source. An insulating coating protects the heating element and conductors from exposure to combustion gases. Various flat plate mounting embodiments are disclosed.