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. 27, 1996
Filed:
May. 19, 1994
Mitsuru Miyata, Atsugi, JP;
Tomoyuki Hirose, Atsugi, JP;
Unisia Jecs Corporation, Atsugi, JP;
Abstract
A reference angle signal which provides a reference for ignition control of each cylinder is output together with a cylinder discrimination signal for matching the reference angle signal with the respective cylinder, and ignition control carried out for separate cylinders on the basis of the cylinder discrimination results from the cylinder discrimination signal. When there is an abnormality in the cylinder discrimination signal and cylinder judgment becomes nonfunctional, the reference angle signal is matched with the respective cylinder in the ignition order under the normal conditions up until the occurrence of the abnormality, and ignition is carried out normally in the separate cylinders. As a result, even if cylinder discrimination by the cylinder discrimination signal becomes nonfunctional, ignition for separate cylinders can be continued, so that the engine can keep running.