Internal-combustion engines – Engine speed regulator – Having plural throttle valve structure
Patent
1994-12-09
1996-11-19
Dolinar, Andrew M.
Internal-combustion engines
Engine speed regulator
Having plural throttle valve structure
1233391, 123396, 180197, 36442603, F02D 902, F02D 1100, B60K 2816
Patent
active
055752551
ABSTRACT:
A throttle control system for controlling a throttle valve of an automotive internal combustion engine in order to securely accomplish a traction control. The throttle control system comprises a first throttle valve operated by an accelerator, and a second throttle valve controlled under the action of a control unit as follows: The fully closed position of the first throttle valve is learned as a first fully closed position corresponding value, when the first throttle valve is fully closed. The fully closed position of the second throttle valve is learned as a second fully closed position corresponding value under control of an actuator to compulsorily fully close the second throttle valve immediately after turning ON of a switch for allowing electric current to flow to the engine. A fast idle cam is provided to each of the first and second throttle valves to change the fully closed position of the first and second throttle valves larger in a direction to open each throttle valve as an engine temperature lowers to provide a change amount representative of a change in the first fully closed position corresponding value, under action of a thermally responsive member which is deformable in response to the engine temperature. The second fully closed position corresponding value of the second throttle valve is corrected in accordance with the change amount in the first fully closed position corresponding value, thereby controlling the opening degree at the fully closed position of the second throttle valve at a value suitable for the traction control.
REFERENCES:
patent: 5220828 (1993-06-01), Sodeno et al.
Patent Abstracts of Japan, vol. 18, No. 671, (M-1726), Dec. 19, 1994 & JP-A-6-264812, (Shiomi).
Abe Kazuhiko
Iriyama Masahiro
Dolinar Andrew M.
Nissan Motor Co,. Ltd.
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