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:
Sep. 05, 1995
Filed:
Sep. 09, 1993
Etsuya Yokoyama, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
In a throttle valve control system, an accelerator pedal position sensor (APS) comprises a first APS for detecting a large amount of movement of an accelerator pedal which is relatively low in resolution and a second APS for detecting middle and small amounts of movement of the accelerator pedal which is relatively high in resolution, and a throttle valve controlling ECU has abnormal condition detector which determines that at lease one of the first and second APSs is in abnormal condition when the relationship between the output voltages of the first and second sensors is different from that which is established when the first and second APSs are in normal condition. Therefore, even when the accelerator pedal is moved slightly which has been positioned to open the throttle valve to a low or middle degree, the throttle valve is controlled, which improves the operability of the engine. The abnormal condition detector detects when at least one of the first and second APSs is out of order, so that the difficulty is eliminated that it becomes impossible to control the throttle valve when the accelerator pedal position sensor is out of order; that is, the vehicle is improved in safety.