System and method for integrating intelligent cruise control...

Details System and method for integrating intelligent cruise control... System and method for integrating intelligent cruise control...

B - Operations, Transporting

60

K

B60K 31/04 (2006.01) B60K 31/00 (2006.01) F16H 61/70 (2006.01)

Patent

CA 2170659

A system and method for integrating intelligent cruise control functions (72) with traditional cruise control functions (70) in an electronically controlled internal-combustion engine (E) utilizes engine control modes as defined in the SAE J1922 and SAE J1939 specifications. In one embodiment, the speed control mode is utilized to broadcast a desired engine speed to automatically attain and maintain a desired following distance relative to a forward vehicle. In another embodiment, the engine speed/torque limit control mode is used to impose an upper limit on the traditional cruise control set speed to control the headway distance relative to a forward vehicle. The system and method relinquish control to traditional cruise control when no forward vehicle is detected. Another embodiment provides a control strategy similar to that defined by the J1922 and J1939 specifications to select the lower value as determined by the intelligent cruise control (72) and traditional cruise control (70) functions.

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