Method of operating a combustible mixture generator of an intern

Details Method of operating a combustible mixture generator of an intern Method of operating a combustible mixture generator of an intern

1980-06-30

1983-07-05

Myhre, Charles J.

Internal-combustion engines

Charge forming device

Auxiliary control of carburetor fuel metering

123442, 261 39R, 261 52, F02M 706

Patent

active

043912494

ABSTRACT:
In order to produce a transition mixture enrichment during acceleration of an internal combustion engine, a carburettor or other mixture generator 1 of the engine with a mixing chamber 2, a main throttle 4 and a choke valve 5, has the choke valve 5 operated by a quick-acting electric drive 6, for example a two-coil rotary setter, which is controlled by a microprocessor 8. The microprocessor is fed with signals which sense the opening of the main throttle 4 and preferably also other engine operating parameters such as temperature and speed. When the main throttle 4 is opened to accelerate the engine, the microprocessor 8 causes the electric drive 6 to close the choke valve 5 abruptly and temporarily. The extent of closure of the choke valve 5 is dependent upon the extent of the throttle opening and on the other operating parameters to give the required mixture enrichment. This arrangement avoids the necessity to provide an accelerator pump.

REFERENCES:
patent: 2040254 (1936-05-01), Fitz Gerald
patent: 3673989 (1972-07-01), Aono et al.
patent: 4011844 (1977-03-01), Hirosawa et al.
patent: 4046118 (1977-09-01), Aono
patent: 4075982 (1978-02-01), Asano et al.
patent: 4121545 (1978-10-01), Mizote
patent: 4129105 (1978-12-01), Ito et al.
patent: 4245605 (1981-01-01), Rice et al.

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