Document Type and Number:
Japanese Patent JPH0222224
Kind Code:
B2
Abstract:
An engine has a main intake passage having a throttle valve therein. A bypass passage is branched off from the main intake passage located upstream of the throttle valve and is connected to the main intake passage located downstream of the throttle valve. A flow control valve, actuated by a stepper motor, is arranged in the bypass passage. When the engine is started, the control valve is moved from the fully opened position to a predetermined position for reducing the flow area of the bypass passage. Then, the control valve is gradually closed as the temperature of the cooling water of the engine is increased.
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Inventors:
ITO HIROSHI
KOBAYASHI NOBUYUKI
KOBAYASHI NOBUYUKI
Application Number:
JP814781A
Publication Date:
May 17, 1990
Filing Date:
January 23, 1981
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD
International Classes:
F02D41/16; F02D31/00; F02D33/00; F02D41/00; F02M3/07; F02N19/10