Internal-combustion engines – Engine speed regulator – Idle speed control
Patent
1989-10-13
1990-09-11
Wolfe, Willis R.
Internal-combustion engines
Engine speed regulator
Idle speed control
123438, 261 415, F02M 307
Patent
active
049553429
ABSTRACT:
An idling engine speed control apparatus for an engine with a carbureter having a main fuel passage for supplying fuel to an engine and a slow fuel passage for supplying fuel to the engine in accordance with an opening degree of a throttle valve mounted within the carbureter. There are provided an opener for opening and closing the throttle valve, and a bypass having a shutter valve, the bypass opening at the downstream of the throttle valve of the carbureter. The engine is subjected to an idle-up control by using at least one of the opener and the shutter valve of the bypass. The opener causes the throttle valve to open by a predetermined amount in accordance with the load conditions except that of an air conditioner, and the shutter valve of the bypass is opened when the air conditioner is used. The opener may cause the throttle valve to open for a predetermined time immediately after the start of using the air conditioner. The opener and the shutter valve of the bypass may be operated at a time when the air conditioner is used and the engine revolution number becomes lower than a predetermined value.
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Fuji Jukogyo Kabushiki Kaisha
Wolfe Willis R.
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