Apparatus for controlling ignition timing in internal combustion

Details Apparatus for controlling ignition timing in internal combustion Apparatus for controlling ignition timing in internal combustion

1990-07-16

1991-12-10

Argenbright, Tony M.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

F02P 504

Patent

active

050708422

ABSTRACT:
An apparatus for controlling ignition timing in an internal combustion engine wherein the ignition timing is controlled such that a crank angle at which an increased rate of pressure in a cylinder is maximized coincides with a target value, e.g., an MBT point or the like. The apparatus detects an occurrence of incorrect ignition in response to a signal indicative of pressure in the cylinder and inhibits feedback control from being carried out for the ignition timing when an occurrence of incorrect ignition is detected. The crank angle, at which an increased rate of pressure in the cylinder is maximized, is calculated in response to a signal indicative of pressure in the cylinder, a reference pulse transmitted from a crank angle sensor and a pulse transmitted per 1.degree. of a crank angle of the crankshaft. The target value is set to a value by which a maximum torque is obtainable within a range where no knocking occurs.

REFERENCES:
patent: 4896642 (1990-01-01), Washino et al.
patent: 4951630 (1990-08-01), Iwata
patent: 4966117 (1990-10-01), Kawamura

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