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:
Feb. 17, 1998
Filed:
Nov. 06, 1996
Hitachi, Ltd., Tokyo, JP;
Abstract
A control apparatus for a multi-cylinder engine of direct injection, is composed of a pressure change estimation part for estimating in advance the pressure in each cylinder, from the fuel injection start to the fuel injection end, a part for calculating the difference between the estimated pressure in the cylinder and the pressure of fuel, and a part for calculating a supposed decreased amount of injected fuel, caused by the decrease of the difference between the pressure in the cylinder and the pressure of fuel, in a compression stroke. A part for determining an additional fuel injection time interval to a base fuel injection time interval also determined by the control apparatus, compensates the supposed decreased amount of injected fuel.