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:
Apr. 24, 1990
Filed:
Jun. 21, 1989
Applicant:
Inventors:
Roger B Krieger, Birmingham, MI (US);
Rodney B Rask, Grosse Pointe Woods, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
123 / ; 123556 ;
Abstract
A two cycle engine wherein the scavenging gas is heated at low loads to improve scavenging. The gas may be heated by passage through finned passages in heat exchange relation with the exhaust ports with valves to direct the flow through unheated passages during higher load operation.