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:
Jul. 19, 1994
Filed:
Aug. 03, 1993
Nippondenso Co., Ltd., Kariya, JP;
Abstract
An engine control apparatus for discriminating each cylinder of an engine comprises a crank angle rotor (M1) having a configuration representing a crank angle of an engine; a crank angle sensor (M2) operatively associated with the crank angle rotor (M1) to generate a crank angle signal in accordance with the configuration of the crank angle rotor (M1). The configuration of the crank angle rotor (M1) includes first and second silent sections. The first silent section is cooperative with the crank angle sensor (M1) to constitute a part (M3) for generating a first level non-pulsation component of the crank angle signal. The second silent section being cooperative with said crank angle sensor to constitute a part (M4) for generating a second level non-pulsation component of the crank angle signal. There is further provided a cam angle rotor (M5) having a configuration representing a cam angle, which is operatively associated with a cam angle sensor (M6) for generating a cam angle signal to provide a plurality of different kinds of signal level sequences with respect to the first and second silent sections of the crank angle rotor. A cylinder discriminating device (M7) discriminates each cylinder of the engine on the basis of the level of the non-pulsation component of the crank angle signal and the signal level sequences of the cam angle signal.