Method for controlling ignition timing in an internal combustion

Details Method for controlling ignition timing in an internal combustion Method for controlling ignition timing in an internal combustion

1978-04-04

1980-03-04

Myhre, Charles J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123117D, 123119A, F02P 504, F02B 502

Patent

active

041911440

ABSTRACT:
Disclosed is a method for controlling the ignition timing in an internal combustion engine provided with an EGR device. In this method, the correct EGR ratio of the engine is obtained by means of a specific calculation using a measured absolute pressure value in an intake manifold of the engine where EGR gas is recirculated and using a calculated absolute pressure value in the intake manifold where no EGR gas is recirculated, according to the engine's operating conditions. The optimum ignition timing in the engine is controlled in accordance with the calculated EGR ratio.

REFERENCES:
patent: 3815560 (1974-06-01), Wahl et al.
patent: 4106448 (1978-08-01), Noguchi et al.
patent: 4124006 (1978-11-01), Rodenkilch

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