Throttle control apparatus

Internal-combustion engines – Engine speed regulator – Open loop condition responsive

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F02D 700

Patent

active

059342501

ABSTRACT:
A throttle control apparatus controls the amount of inlet air fed to an internal combustion engine on the basis of the degree of opening of a throttle valve. The throttle valve is constituted by a valve body that is fixedly mounted on a valve shaft which is rotatably supported on a housing. The valve shaft is connected, via a reduction mechanism, to an output shaft of a coreless DC motor that is accommodated within the housing. The DC motor is operated to increase or decrease the amount of inlet air to the engine based on a change of the acceleration pedal position, for example by rotating the valve body by way of the valve shaft through an angle that corresponds to the change in position of the accelerator pedal. Employing a DC coreless motor allows the throttle valve to respond to a very quick positioning of the acceleration pedal with a relatively great degree of accuracy.

REFERENCES:
patent: 5201291 (1993-04-01), Katoh et al.
patent: 5517966 (1996-05-01), Kanazawa et al.
patent: 5738072 (1998-04-01), Bolte et al.
patent: 5868114 (1999-02-01), Kaminmura et al.

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