System for controlling engine speed in response to detection of

Details System for controlling engine speed in response to detection of System for controlling engine speed in response to detection of

1995-07-17

1998-01-06

Chin, Gary

Boots, shoes, and leggings

36442404, 180173, 340438, B60K 3116

Patent

active

057061998

ABSTRACT:
The present invention is directed to a system for detecting the tampering of the vehicle speed signal in a vehicle having electronic engine control. An algorithm that forms part of the present invention is operable to detect a tampering mode producing a constant transmission out-of-gear signal to the vehicle speed sensor input of the electronic controller, and tampering mode disallowing the electronic controller from acting upon a vehicle owner or manager-programmed top gear ratio, or maximum vehicle speed limit. In response to detecting a possible vehicle speed signal tampering condition, a vehicle speed signal tampering fault code is logged into a memory portion of the controller, a vehicle operator warning lamp is activated and the engine speed is electronically controlled to a vehicle owner/manager programmable maximum engine speed limit. The system is operable with a number of transmission embodiments including manual and automatic types intended for either on or on/off highway applications.

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