Engine control device

Details Engine control device Engine control device

1994-06-28

1995-12-12

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Fuel injection system

123425, 123435, F02D 4300

Patent

active

054740452

ABSTRACT:
An engine control device comprises: crank angle sensor provided for the cylinders of an engine; cylinder internal pressure sensor for detecting the internal pressures of the cylinders according to the output signals of the crank angle sensor; pressure normalizing unit for normalizing the cylinder internal pressures thus detected, according to the cylinder internal pressure which is obtained when the engine is in standard state; engine speed detector; charge efficiency calculating unit for calculating the charge efficiencies of the cylinders by using the output signals of the pressure normalizing unit and the engine speed detector; operating condition detecting unit for detecting the outputs of the pressure normalizing unit and the engine speed detector as operating conditions, calculation control unit for calculating the air/fuel ratio and the ignition timing of each cylinder according to the operating conditions; and adjusting unit for adjusting the air/fuel ratios and ignition timing of the cylinders according to the output of the calculation control unit, thereby to control the air/fuel ratios and ignition timing of the cylinders with high accuracy.

REFERENCES:
patent: 4971009 (1990-11-01), Washino et al.
patent: 5123391 (1992-06-01), Ohkubo et al.
patent: 5245969 (1993-09-01), Nishiyama et al.

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