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. 20, 1993
Filed:
Oct. 29, 1991
Applicant:
Inventor:
Bertrand Gatellier, Boulogne, FR;
Assignee:
Institut Francais du Petrole, Rueil-Malmaison, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
123568 ; 123571 ;
Abstract
The process essentially consists of reintroducing into the cylinder, during the phase of intake of the fresh gas, a more or less large part of the waste gas. It is achieved by providing each cylinder (1) with a branch pipe (7) communicating with the cylinder through an auxiliary inlet valve (8) whose opening period corresponds to the intake top dead center, and with the inlet pipe (6). A shutter or a plug (9) allows to control the flow of waste gas recycled at the intake according to the working conditions of the engine. A decrease in the harmful substances and an improvement in the engine efficiency can be obtained at the same time thereby.