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:
Nov. 04, 2003
Filed:
Dec. 20, 2001
Bertrand Gatellier, Bougival, FR;
Bruno Walter, Nanterre, FR;
Institut Francais Du Petrole, Rueil-Malmaison Cedex, FR;
Abstract
A direct-injection internal-combustion engine comprising at least one cylinder ( ) with a cylinder head ( ), a piston ( ) sliding in the at least one cylinder, a gas intake and exhaust ( ), a combustion chamber defined on one side by the upper face (SP) of the piston ( ), the face comprising a projection ( ) pointing towards cylinder head ( ) and arranged at the center of a concave bowl ( ). According to the invention, engine comprises at least one injection nozzle ( ) for injecting fuel with a nappe angle (a ) less than or equal to 2 Arctg , where CD is the diameter of cylinder ( ) and F the distance between the point of origin of the fuel jets from injection nozzle ( ) and the position of the piston corresponding to a crankshaft angle of 50° in relation to the top dead center (TDC).