Japanese Patent JPH0256496

B2

In effecting individual cylinder fuel injection control in an electronically controlled diesel engine, wherein rpm variations with every explosion cylinder are detected and compared with one another, and a fuel injection quantity control actuator is controlled with every cylinder so as to make the rpm variations of respective cylinders uniform, so that engine vibrations due to a dispersion in fuel injection quantity between the cylinders can be reduced, the individual cylinder correction quantity of the fuel injection quantity control actuator is determined in accordance with a deviation in the rpm variation obtained from a difference between a mean rpm variation and rpm variations of respective cylinders, the upper and lower limit guard values of the individual cylinder correction quantity, the values being variable in association with a range, which the fuel injection quantity control actuator can follow up, is determined in accordance with engine temperature or fuel temperature, and the fuel injection quantity control actuator is controlled with every cylinder in accordance with the individual cylinder correction quantity having imposed thereon restrictions by the upper and lower limit guard values, so as to prevent the divergence of the individual cylinder correction quantity.

TSUKAMOTO KEISUKE
NAGASE MASAOMI
MATSUNO KYOTAKA

JP4106084A

November 30, 1990

March 02, 1984

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TOYOTA MOTOR CO LTD

F02D41/00; F02D41/14; F02D41/36; F02D41/40; F02M41/12; F02B1/04; F02B3/06

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