Throttle device

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

Reexamination Certificate

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Details

C123S337000, C123S400000

Reexamination Certificate

active

10530297

ABSTRACT:
With the throttle apparatus of the present invention having a throttle valve30disposed at an intake passage, a throttle shaft240to open and close the throttle valve30, a DC motor51to drive the throttle shaft40, and so on, a second drive means60is disposed to exert return force to the throttle shaft40only for returning the throttle valve30to the rest position. With this structure, since return force is not exerted with a normal operation, load to the DC motor51is decreased, and an open-close operation can be preformed smoothly. By returning the throttle valve to the rest position utilizing other means than spring force, load to the motor is decreased, and open-close operation is smoothed.

REFERENCES:
patent: 5033433 (1991-07-01), Churchill et al.
patent: 5036816 (1991-08-01), Mann
patent: 6152108 (2000-11-01), Adachi et al.
patent: 6662779 (2003-12-01), Kotouge
patent: 2005/0087172 (2005-04-01), Torii
patent: 63-80039 (1988-04-01), None
patent: 6-207535 (1994-07-01), None
patent: 8-218904 (1996-08-01), None

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