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:
Mar. 13, 1990
Filed:
Oct. 11, 1988
Shoso Ishii, Hiroshima, JP;
Minoru Kuriyama, Hiroshima, JP;
Yukinobu Nishimura, Himeji, JP;
Setsuhiro Shimomura, Himeji, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A fuel injection system includes a valve for supplying fuel to an internal combustion engine; a device for measuring the quantity of air passing through an air intake passageway in both forward and backward directions; a device for detecting the number of revolution of the engine; a device for detecting conditions of the engine; a limiting device, which is used when an output therefrom produces a time width of a pulse to be imparted to the fuel injection valve, and which limits variables related to the atmospheric pressure including a measured value of the air quantity limited by the number of engine revolutions; and an atmospheric pressure conformed corrective value computing device. Reference values of the variables at a predetermined atmospheric condition are stored with the number of engine revolutions as a parameter, and an atmospheric condition is computed by introducing an input signal corresponding to the parameter from the condition detecting device and an output signal from the air quantity measuring device or the limiting device, the latter correcting the limited value in conformity to the atmospheric pressure in accordance with the atmospheric pressure conformed corrective value.