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:
Oct. 20, 1998
Filed:
Dec. 11, 1997
Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A control apparatus for an in-cylinder injection type internal combustion engine includes an electronic control unit and an induction control system for changing the effective length of an intake passage of an induction system of the engine. The electronic control unit selects one of fuel injection modes including a compression-stroke injection mode and an intake-stroke injection mode in accordance with the engine operating state. When the engine is operated in a low engine-speed zone of a compression-stroke injection region, the electronic control unit controls the induction control system so as to make the effective length of the intake passage shorter than that for other engine operating region, to thereby attain a stable combustion, improved fuel efficiency and improved engine output in any fuel injection mode.