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. 21, 2006
Filed:
Feb. 18, 2004
Takuya Shiraishi, Hitachi, JP;
Toshiharu Nogi, Hitachi, JP;
Minoru Ohsuga, Hitachi, JP;
Yoko Nakayama, Hitachi, JP;
Noboru Tokuyasu, Hitachi, JP;
Takuya Shiraishi, Hitachi, JP;
Toshiharu Nogi, Hitachi, JP;
Minoru Ohsuga, Hitachi, JP;
Yoko Nakayama, Hitachi, JP;
Noboru Tokuyasu, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
There is provided a cylinder injection type internal combustion engine capable of performing stratified charge operation at the time of a vehicle speed of 120 km/h and/or an engine rotational speed of 3200 rpm to enhance the fuel efficiency and/or to observe the emission regulations. In the internal combustion engine, a stratum of air and/or air flow is formed between a fuel spray injected from an injection valve and the top face of a piston and/or the wall surface of a combustion chamber, and a face shape contrived to guide the air flow is formed on the top face of the piston. Also, the stratified charge operation can be performed even at the time of cold start or cranking.