Vehicle speed dependant calibration trim or user-selectable...

Details Vehicle speed dependant calibration trim or user-selectable... Vehicle speed dependant calibration trim or user-selectable...

2011-08-02

2011-08-02

Huynh, Hai H (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C123S436000

Reexamination Certificate

active

07991540

ABSTRACT:
A control system and method for improving vehicle fuel economy is provided. A base timing module generates a base timing signal. A trim module generates a timing trim signal based on a calibratable compensation factor. A vehicle speed trim module adjusts a calibration parameter (such as engine timing for example) based on the base timing signal and the timing trim signal. According to some implementations, the trim module includes a base trim module and a vehicle speed compensation module and a calibratable compensation factor module. The vehicle speed compensation module generates a vehicle speed compensation factor. The base trim module generates a base trim signal based on the vehicle speed compensation factor or the calibratable compensation factor. The base trim signal can be based on a speed of the engine. The base trim signal can further be based on a quantity of fuel delivered to the engine.

REFERENCES:
patent: 7606653 (2009-10-01), Redon et al.

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