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. 08, 2001
Filed:
Jun. 28, 2000
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A fuel injection control system for a cylinder injection type internal combustion engine, which system suppresses occurrence of torque shock upon changeover of combustion modes while protecting combustion performance of the engine from degradation to thereby enhance drivability of a motor vehicle equipped therewith. The control system includes a means (,) for detecting cylinder-charged intake air quantity information (Qai), a means (,) for setting a combustion mode (M) of the engine, a means (,) for setting a desired air-fuel ratio (A/Fo), a means (,) for setting a desired intake air quantity (Qao) conforming to the combustion mode, a means (,) for setting a fuel injection quantity (Qf) for the fuel injector means (,) so that the desired air-fuel ratio (A/Fo) is realized, a means (,) for setting a throttle valve opening degree so that the desired intake air quantity can be realized, and a means (,) for changing over the combustion modes. The fuel injection quantity control means (,) is comprised of a combustion-mode-changeover-oriented fuel injection quantity control means (,) for altering the fuel injection quantity so that it changes in reverse phase relative to the change of the cylinder-charged intake air quantity upon changeover of the combustion modes.