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:
Mar. 23, 2004
Filed:
Oct. 09, 2001
Applicant:
Inventors:
Jacques Lavy, Guillancourt, FR;
Jean-Charles Dabadie, Rueil-Malmaison, FR;
Assignee:
Institut Francais du Petrole, Rueil-Malmaison cedex, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B 2/300 ;
U.S. Cl.
CPC ...
F02B 2/300 ;
Abstract
Self-ignition control in a four-stroke internal-combustion engine, comprising several intake means and several exhaust means per cylinder. In order to reduce nitrogen oxide emissions during part-load operation, the exhaust means of each cylinder open ( and ) respectively during the exhaust phase so as to discharge the burnt gases from the cylinder and during the intake phase so as to reintroduce burnt gases into the cylinder, the time of opening ( ) of an intake means being deferred so to allow fresh gas to pass into the cylinder after partial filling thereof with the burnt gases.