Method and apparatus for control of a fuel quantity increase cor

Details Method and apparatus for control of a fuel quantity increase cor Method and apparatus for control of a fuel quantity increase cor

1994-01-26

1995-06-06

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Including cylinder pressure or temperature responsive means

123436, F02D 4106, F02M 700

Patent

active

054213053

ABSTRACT:
A water temperature base increase correction amount for an internal combustion engine is reducingly corrected while maintaining the level of the surge-torque below a fixed level. A time constant for updating of the reduction correction is set based on a delay time from supply of fuel until generation of torque from combustion of the fuel. In this way responsiveness to the fuel reduction correction can be maintained, enabling improvement in fuel costs and exhaust emissions. Furthermore, the detection of the surge-torque necessary for example, for the control of fuel reduction correction, involves detection of scatter in combustion pressures between cylinders, while at the same time detecting variations in combustion pressure occurring in the same cylinder. The surge-torque level is then detected on the basis of these results. Since the influence or the occurrence of surge-torque is greater at low speed in the case of the former, and at high speed in the case of the latter, good surge-torque detection can be achieved over the whole operating range.

REFERENCES:
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patent: 5265575 (1993-11-01), Norota
patent: 5331933 (1994-07-01), Matsushita
patent: 5353764 (1994-10-01), Tomisawa

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