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:
Aug. 04, 1987
Filed:
Mar. 21, 1986
Applicant:
Inventors:
David H Cotter, Coopersville, MI (US);
Richard F Teerman, Wyoming, MI (US);
Robert C Timmer, Grandville, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
2395333 ; 123467 ; 1374895 ; 2395338 ;
Abstract
A fuel injection nozzle is provided with a pressure actuated injection valve with a first spring and a second spring operatively associated therewith to permit two stage opening of the injection valve, these spring also controlling opening movement of a valve during the injection cycle in the mid to higher speed range of engine operation to allow pressurized fuel to act on the stem end of the injection valve to effect its closure at a higher valve closing pressure than the valve closing pressure from idle to a predetermined mid-speed range of engine operation.