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. 19, 1994
Filed:
Nov. 09, 1992
Applicant:
Inventor:
Hiroshi Kanesaka, Kawasaki, JP;
Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ; F01N / ;
U.S. Cl.
CPC ...
123568 ; 60278 ; 60285 ;
Abstract
Exhaust gases are caused to flow back into the cylinders of an Otto-cycle engine through exhaust valves when the pistons stay at the bottom dead centers of the induction stroke. This enables the exhaust gases leaving the cylinder during the exhaust stroke to have a sufficiently high temperature to activate a catalyst for purifying the exhaust gases even when the engine still has a low temperature during the beginning of its operation at a low load.