Exhaust control system on internal combustion engine

Details Exhaust control system on internal combustion engine Exhaust control system on internal combustion engine

1989-03-23

1990-03-27

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Pulsed, timed, tuned or resonating exhaust

60324, F02B 2702

Patent

active

049109600

ABSTRACT:
Disclosed herein is an exhaust control system of an internal combustion engine. The exhaust control system comprises an electrically controlled valve installed in one of two tail pipes of a muffler; an engine speed sensor; an exhaust gas temperature sensor; a first control circuit for causing the valve to assume selectively a pipe closing position when the engine speed is lower than a reference level, and a pipe opening position when the engine speed is equal to or higher than the reference level; and a second control circuit for varying the reference level in accordance with the temperature of the exhaust gas.

REFERENCES:
patent: 4462208 (1984-07-01), Hicks
patent: 4558565 (1985-12-01), Kojima
patent: 4665692 (1987-05-01), Inaba

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