Method and system for generating a fuel pulse waveform

Details Method and system for generating a fuel pulse waveform Method and system for generating a fuel pulse waveform

1994-12-27

1996-08-20

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

123493, F02D 4110, F02D 4112

Patent

active

055469094

ABSTRACT:
A method and system for generating electronic fuel injection pulse waveforms to achieve an accurate air/fuel ratio control during transient conditions. Sensors are provided for sensing a plurality of engine parameters. An electronic engine controller is provided for performing a plurality of steps associated with the method. The method includes storing calibration data and sensing the engine parameters. A leading edge of the fuel pulse waveform is calculated based on the stored calibration data and the sensed engine parameters. The leading edge of the fuel pulse waveform is generated, thereby triggering an interrupt. Next, a trailing edge of the fuel pulse waveform is calculated based on current fuel mass requirements determined during the duration of the fuel pulse. The method concludes with the step of generating the trailing edge of the fuel pulse waveform.

REFERENCES:
patent: 4785784 (1988-11-01), Nanyoshi et al.
patent: 4911131 (1990-03-01), Nakaniwa et al.
patent: 5003953 (1991-04-01), Welgarz et al.
patent: 5353768 (1994-10-01), Messih et al.

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