Acceleration responsive control system and method for internal c

Details Acceleration responsive control system and method for internal c Acceleration responsive control system and method for internal c

1995-12-08

1996-10-22

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

123422, 440 87, F02P 515

Patent

active

055666574

ABSTRACT:
An ignition control for an internal combustion engine accurately determines current engine operational status (acceleration or deceleration) and controls optimally ignition timing. The exemplary system includes a microcomputer, drive circuits for driving ignition coils from outputs of the microcomputer, and a waveform shaping circuit for shaping signal pulses from a crank angle sensor before into the microcomputer. The microcomputer calculates changes in engine speed from wave-shaped signal pulses and determines acceleration rate relative to the maximum attainable acceleration from the speed changes. The microcomputer controls the ignition timing based on the determined acceleration rate. Thus, a complicated throttle link or throttle opening sensor is not necessitated to perform acceleration responsive engine control.

REFERENCES:
patent: 4232642 (1980-11-01), Yamaguchi et al.
patent: 4252096 (1981-02-01), Kennedy
patent: 4493303 (1985-01-01), Thompson et al.

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