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. 21, 1980
Filed:
May. 16, 1978
Nippondenso Co., Ltd., Kariya, JP;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Abstract
A method and apparatus for controlling an internal combustion engine by a digital computer. A pulse generator for generating reference pulse signals in synchronism with the rotation of the crankshaft of the engine is associated with the digital computer which is programmed to discriminate the rotational speed of the engine is higher or lower than a predetermined value in response to the reference signals and digitally calculate a required amount of fuel to be supplied to the engine or the like. When the rotational speed is discriminated to be lower than the predetermined value, the required calculation, including first and second portions is completed in response to each reference pulse signal and the combustion of the engine is controlled according to the calculated value, whereas when the rotational speed is discriminated higher than the predetermined value, the first and second portions of the calculation are performed alternately in response to successive reference pulse signals, and with each reference pulse the results of the most recently executed first and second portions are combined to form a calculated value and the combustion of the engine is controlled in accordance with the calculated value.