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. 31, 1985
Filed:
Feb. 14, 1985
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
In effecting individual cylinder fuel injection control in an electronically controlled diesel engine, wherein rpm variations with every explosion cylinder are detected and compared with one another, and a fuel injection quantity control actuator is controlled with every cylinder so as to make the rpm variations of respective cylinders uniform, so that engine vibrations due to a dispersion in fuel injection quantity between the cylinders can be reduced, the individual cylinder correction quantity of the fuel injection quantity control actuator is determined in accordance with a deviation in the rpm variation obtained from a difference between a mean rpm variation and rpm variations of respective cylinders, the upper and lower limit guard values of the individual cylinder correction quantity, the values being variable in association with a range, which the fuel injection quantity control actuator can follow up, is determined in accordance with engine temperature or fuel temperature, and the fuel injection quantity control actuator is controlled with every cylinder in accordance with the individual cylinder correction quantity having imposed thereon restrictions by the upper and lower limit guard values, so as to prevent the divergence of the individual cylinder correction quantity.