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. 29, 2001
Filed:
Apr. 08, 1999
Jordan K. Lampert, Metuchen, NJ (US);
Andrian I. Kouznetsov, Santa Barbara, CA (US);
Jacob Y. Wong, Goleta, CA (US);
Ronald M. Heck, Frenchtown, NJ (US);
John J. Steger, Pittstown, NJ (US);
Arthur Bruce Robertson, Greenbelt, MD (US);
Jeff H. Moser, White Lake, MI (US);
Engelhard Corporation, Iselin, NJ (US);
Abstract
A pre-vaporized fuel system for use in fueling an internal combustion engine is provided with a dynamic infrared sensor. The infrared sensor senses the hydrocarbon content of the vaporized fuel which information is used by the engine control module to control engine fueling to minimize emissions. The infrared source is operated to maintain the pre-vaporized fuel below its lower explosive limit and the thermopile detector electronics is synchronized with the light pulse frequency to develop fast signal responses suitable for fueling control.