System and method for real time programmability of an engine...

Details System and method for real time programmability of an engine... System and method for real time programmability of an engine...

2005-08-09

2005-08-09

Vo, Hieu T. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

Reexamination Certificate

active

06928362

ABSTRACT:
A method for real time programmability of an engine electronic control unit (ECU). The present invention allows a user to update calibration data previously stored in memory in the engine ECU with new calibration data sent from an external device. The user can monitor the effects of the new calibration data on the engine instantaneously without having to wait for a period of time for the new calibration data to be permanently stored in the engine ECU's memory. To permanently store the new calibration data into the main memory, an erase/reprogram subroutine is uploaded from the main memory to a temporary memory. After the erase/reprogram subroutine is uploaded into the temporary memory location, the erase/reprogram subroutine will execute and permanently download the new calibration data into the main memory in response to a predetermined vehicle event.

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