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. 16, 1993
Filed:
Dec. 20, 1991
Koji Sakakibara, Hekinan, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A control apparatus for an internal combustion engine having: a sensor for detecting a running condition of the internal combustion engine; a detector for detecting information indicative of the running condition in accordance with an output signal of the sensor; and a controller for controlling the internal combustion engine in accordance with a detection result of the detector, the controller communicating with the detector through a signal line is characterized in that: the detector includes sending circuit for sending the information by change in level of the signal lines from the last outputted information and the controller comprises: a reading circuit for reading level of the signal line; a memory for storing the read level of the signal line; a restoring circuit for restoring the information in accordance with the change of level read at this time from the level stored at the last time; a setting circuit for setting an amount of controlling of the internal combustion engine in accordance with restored result; and sub-controller for effecting a safety control when the level of the signal line read at this time does not change from that read out at the last time.