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:
Sep. 23, 2003
Filed:
Oct. 28, 1999
Marek T. Wlodarczyk, Bloomfield Hills, MI (US);
Thomas J. Poorman, Howell, MI (US);
Other;
Abstract
Fuel injectors ( ) for internal combustion engines are modified and equipped with fiber optic fuel pressure sensors ( ) and fiber optic combustion pressure sensors ( ). The combustion pressure sensors ( ) are located in separate channels ( ) formed in the fuel injectors with the lower portion ( ) of the channels leading to the combustion chambers. Above the combustion pressure sensors ( ) are fiber optic leads ( ). In the preferred embodiments the sensors ( ) are equipped with diaphragms ( ) of novel shape ( ) and employ multiple pairs of fibers ( ), temperature sensitive components ( ) and novel compensation and status monitoring circuits (FIGS. ).