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:
May. 10, 1994
Filed:
Jun. 23, 1993
Brian P Marshall, Fort Wayne, IN (US);
Navistar International Transportation Corp., Chicago, IL (US);
Abstract
In a properly calibrated accelerator pedal sensor that provides a signal representative of pedal position to an electronic control module for the engine, the point at which the associated idle validation switch switches to distinguish idle from non-idle lies within a limited range of positions proximate closed throttle. The invention is a method for performing an in-vehicle test that can quickly determine if the switch point is in or out of calibration. A jumper is inserted between the sensor and the vehicle wiring harness that normally connects to the sensor. The jumper comprises several test points to which a voltmeter can be connected to measure certain voltages during the test and two LED's that are observed during the test. A special slide calculator is used to convert certain test data into a form that can be readily compared with other test data to make the determination regarding the idle validation switch.