Process for stabilizing the idle speed of an internal combustion

Details Process for stabilizing the idle speed of an internal combustion Process for stabilizing the idle speed of an internal combustion

1983-12-30

1985-11-12

Lall, Parshotam S.

Internal-combustion engines

Engine speed regulator

Idle speed control

123418, 123417, F02P 504

Patent

active

045521093

ABSTRACT:
A process for stabilizing the idle speed of an internal combustion engine with controlled ignition, wherein the angle of ignition advance to be generated is determined as a function of the rotation speed of the engine and of the pressure prevailing in the intake manifold and, at each cycle for determining the angle of ignition advance, it is determined if the engine is in no-load operation and, if so, there is determined a corrective term of dynamic advance proportional to the instantaneous speed of the engine seen through a high-pass filter (N*) and there is generated an angle of ignition advance (Av) equal to the algebraic sum of a static advance (Avs) determined as a function of the engine speed after low-pass filtering and the intake manifold pressure, on the one hand, and of the corrective term (C), on the other hand.

REFERENCES:
patent: 4328775 (1982-05-01), Ironside
patent: 4338899 (1982-07-01), Geiger et al.
patent: 4377998 (1983-03-01), Hartel et al.
patent: 4399789 (1983-08-01), Yano
patent: 4429671 (1984-02-01), Surace

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