Electronic control module

Details Electronic control module Electronic control module

1991-12-17

1993-12-07

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Fuel injection system

123480, F02P 515

Patent

active

052675424

ABSTRACT:
An electronic control module for use in controlling a vehicle comprises a first processor 10 adapted to calculate the fuelling requirements of the engine and spark advance, and also to control a plurality of diagnostic tests for testing engine operating paramenters. A second processor 12 triggers the spark and spark dwell timing together with the start of fuel injection. By such partitioning of tasks, it is possible to provide a wide variety of facilities with a low cost electronic control module. The second processor 12 is adapted to operate the engine in a back-up mode on failure of the first processor 10 by use of look-up tables for fuel pulse width and spark advance. The vehicle therefore remains operational even on failure of part of the electronic control module.

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