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. 11, 2006
Filed:
Oct. 08, 2004
Mitsuhiro Akagi, Yokohama, JP;
Tsutomu Kikuchi, Setagaya-ku, JP;
Yuichi Iriya, Yokohama, JP;
Hitoshi Ishii, Yokosuka, JP;
Masahiro Fukuzumi, Machida, JP;
Katsuaki Uchiyama, Yokohama, JP;
Masahiko Yuya, Yokohama, JP;
Takao Maitani, Isehara, JP;
Masayuki Tomita, Yokohama, JP;
Mitsuhiro Akagi, Yokohama, JP;
Tsutomu Kikuchi, Setagaya-ku, JP;
Yuichi Iriya, Yokohama, JP;
Hitoshi Ishii, Yokosuka, JP;
Masahiro Fukuzumi, Machida, JP;
Katsuaki Uchiyama, Yokohama, JP;
Masahiko Yuya, Yokohama, JP;
Takao Maitani, Isehara, JP;
Masayuki Tomita, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
An engine control device is configured to perform optimum combustion control according to environmental conditions when warming up of a catalyst for emission purification is required. The engine control device performs stratified combustion by the compression stroke injection at the time of startup, when warming up of the catalyst is required. However, under conditions of low air density, stratified combustion by compression stroke injection is prevented, and either homogenous combustion by intake stroke injection is performed, or double injection combustion by intake stroke injection and compression stroke injection is performed. Thus, the engine control device maintains starting properties and prevents adverse effects on engine operability.