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:
Dec. 11, 1990
Filed:
Oct. 12, 1989
Tetsuro Ishida, Kyoto, JP;
Yoshiaki Danno, Kyoto, JP;
Kazuhide Togai, Takatsuki, JP;
Hiromitsu Ando, Okazaki, JP;
Daisuke Sanbayashi, Toyota, JP;
Masato Yoshida, Kyoto, JP;
Kazuhiro Shiraishi, Kyoto, JP;
Tokihiro Tsukamoto, Kyoto, JP;
Jun Takemura, Toyota, JP;
Eiichi Koujina, Okazaki, JP;
Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A method and device for determining and controlling the condition of a spark ignition internal combustion engine involves detecting a physical value of combustion varying in association with combustion in the combustion chamber, then calculating the heat evolution rate from the physical value, and then determining the adjusting the combustion condition in dependence on the falling area of the heat evolution rate.