Control system for an automotive engine

Internal-combustion engines – Charge forming device – Fuel injection system

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123643, F02D 7067

Patent

active

049268228

ABSTRACT:
Opposite first projections are formed on a crankshaft disk secured to a crankshaft of an engine on diametrically opposite positions, which correspond to top dead centers for specific positions at least two groups in which a pair of cylinders are in opposite phase to each other. A first sensor is provided for sensing the first projections and for producing a crank angle signal. Second projections are formed on a camshaft disk for representing the number of cylinders. A second sensor is provided for sensing the second projections for producing a cam angle signal. A specific cylinder is discriminated by a projection formed on the camshaft disk. In accordance with the crank angle signal and with the cam angle signal, operations for cylinder in each group is controlled at start of the engine. Further, in accordance with the cam angle signal and crank angle signal and with the discrimination of cylinder, the operation for each cylinder is independently controlled.

REFERENCES:
patent: 4459968 (1984-07-01), Brandt et al.
patent: 4519362 (1985-05-01), Arakawa et al.
patent: 4765306 (1988-08-01), Scarnera et al.

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