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:
Oct. 20, 1981
Filed:
Sep. 24, 1979
Applicant:
Inventors:
Richard A Cemenska, Edelstein, IL (US);
George B Grim, Washington, IL (US);
Assignee:
Caterpillar Tractor Co., Peoria, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
123300 ; 123450 ;
Abstract
Two fully independent fuel injection systems have been used for delivering pilot and main fuel injection. Also, two fuel pumps have been used to provide pilot and main injection through a single nozzle. A fuel injection apparatus now provides a plurality of rotary valves (46,48) for starting and stopping both pilot and main injection. Fuel is sequentially (26) controlled to be pilot injected through a first nozzle (28) and main injected through a second nozzle (30).