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. 06, 2001
Filed:
Dec. 18, 1998
Nobuhisa Jingu, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
In a cylinder head of a fuel direct injection spark ignition type internal combustion engine, there extend a pair of intake ports to a combustion chamber. The intake ports are arranged to decrease a distance therebetween as nearing the combustion chamber. An axial center line of each intake port is inclined by an angle “&thgr;” relative to an imaginary plane which includes a center line of an associated piston and is perpendicular to an axial line of an associated crankshaft. The angle “&thgr;” satisfies the inequality of “&thgr;°<&thgr;≦15°”. If desired, the imaginary plane may be replaced with another imaginary plane which includes a center line of an associated fuel injector and extends in parallel with the center line of the associated piston.