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:
May. 18, 2010
Filed:
May. 22, 2008
Tadashi Kurotani, Wako, JP;
Takuya Sato, Wako, JP;
Tadashi Kurotani, Wako, JP;
Takuya Sato, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A controller includes a first intermediate mode which, when the operation mode of an internal combustion engine is shifted from a compression ignition operation mode to a spark ignition operation mode, is interposed between both the operation modes, and a second intermediate mode which, when the operation mode of the internal combustion engine is shifted from the spark ignition operation mode to the compression ignition operation mode, is interposed between both the operation modes. An air supply amount and a fuel supply amount to a combustion chamber is controlled so that the air-fuel ratio of an air-fuel mixture becomes rich gradually in the first intermediate mode, and the air supply amount and the fuel supply amount to the combustion chamber is controlled so that the air-fuel ratio of the air-fuel mixture becomes lean gradually in the second intermediate mode. As a result, when the operation mode of the internal combustion engine is switched between the compression ignition operation mode and the spark ignition operation mode, it becomes possible to suppress fluctuations in the output torque of the internal combustion engine, etc. and smoothly perform the switching.