Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1974-09-20
1976-10-26
Myhre, Charles J.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
1376254, 251 11, F02P 504
Patent
active
039877701
ABSTRACT:
An ignition timing control device for an internal combustion engine includes a body having at least three ports, the first port of which draws vacuum thereinto, the second port of which draws atmospheric air thereinto and the third port of which emits vacuum or air therefrom. A first passageway is provided for establishing communication between the first port and the third port, a second passageway is provided for establishing communication between the second port and the third port, and a third passageway is provided for communicating with the first and second passageways. A first valve, provided within the first passageway, is adapted to be open in response to a low temperature value of the engine and to close at intermediate and high engine temperatures, and a second valve, provided within the second passageway, is adapted to close in response to a low temperature value of the engine and to be open at intermediate and high engine temperatures. Similarly, a third valve, provided within the second passageway and interposed between the second port and the second valve, is adapted to open at low and intermediate engine temperatures and to close at high engine temperatures, while a fourth valve, provided within the third passageway, is adapted to close at low and intermediate engine temperatures and to open at high engine temperatures. A temperature sensitive control device responsive to the operating temperature of the engine has an extensible plunger movable from an initial position to a plurality of actuated positions and is disposed within the body for operating the first, second and third valves so as to thereby be capable of reducing the quantity of noxious fumes exhausted from the engine by varying the spark timing of the engine without adversely affecting the engine, such as for example, the lowering of the output power causing a lack of acceleration, or resulting in engine overheating.
REFERENCES:
patent: 3503377 (1970-03-01), Beatenbough et al.
patent: 3540422 (1970-11-01), Kelly
patent: 3788291 (1974-01-01), Wu
patent: 3812832 (1974-05-01), Scott
patent: 3841551 (1974-10-01), Ota
Aisin Seiki Kabushiki Kaisha
Devinsky Paul
Myhre Charles J.
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