Variable exhaust system for an internal combustion engine

Details Variable exhaust system for an internal combustion engine Variable exhaust system for an internal combustion engine

1992-11-17

1993-12-21

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Pulsed, timed, tuned or resonating exhaust

60312, 181241, F02B 2706

Patent

active

052712249

ABSTRACT:
A dynamically variable exhaust system provides for maximum efficiency of an internal combustion engine (30) by including an exhaust control device (35) which is operated by a control mechanism (33) and managed by a control unit (32). The length and cross-sectional area of the exhaust header section (36) can be varied by transversely displacing the effective exhaust passage within control device (35) while maintaining a streamlined profile of the effective passage throughout a predetermined range of displacement. The control unit (32) can be influenced by numerous operational inputs including control device position potentiometer (40), engine speed input (41), engine load input (42), vehicle braking sensor (43), exhaust emission and temperature sensor (44), and engine management system input (45).

REFERENCES:
patent: 4941319 (1990-07-01), Yamamoto

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