Throttle device for internal combustion engine

Details Throttle device for internal combustion engine Throttle device for internal combustion engine

1999-10-12

2000-06-27

Solis, Erick R.

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

123396, F02D 900

Patent

active

060793902

ABSTRACT:
In an initial opening degree setting mechanism which keeps an initial opening degree of a throttle valve (24) larger than that of a fully closed position thereof when no current is supplied to a motor (12) for driving a throttle shaft (18) for the throttle valve (24), a throttle lever (3) and a sleeve (45) are inserted into the throttle shaft (18) and secured thereto and a sleeve (42) integrated with a return lever (2) is fitted over the sleeve (45) so as to permit a relative rotational mevement with respect to the sleeve (45). The sleeve (42) is urged by a return spring (4) in the direction of closing the throttle valve (24) upto the position of the initial opening degree. With the urging force the return lever (2) is placed to be engageable with the throttle lever (3). The throttle shaft (18) is applied of a valve opening force by a spring for keeping the initial opening degree of the throttle valve (24) near the fully closed position thereof, thereby parts belonging to the throttle valve initial opening degree setting mechanism are collectively and rationally arranged, a driving load of the throttle actuator motor (12) is reduced and a throttle valve control operation is stabilized.

REFERENCES:
patent: 4947815 (1990-08-01), Peter
patent: 5146887 (1992-09-01), Gluchowski et al.
patent: 5452697 (1995-09-01), Sasaki et al.
patent: 5735243 (1998-04-01), Asai et al.
patent: 5787861 (1998-08-01), Suzuki et al.
patent: 5975051 (1999-11-01), Yamada et al.

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