Internal-combustion engines – Engine speed regulator – Idle speed control
Patent
1991-03-07
1993-04-13
Wolfe, Willis R.
Internal-combustion engines
Engine speed regulator
Idle speed control
123588, F02D 4108
Patent
active
RE0342165
ABSTRACT:
A method of and an apparatus for controlling the revolution speed of an engine, suitable for use in an automobile having an automatic transmission. Flow rate of auxiliary intake air by-passing a throttle valve is controlled by an auxiliary air control valve, the opening period of which is incremented in response to a signal which represents the state of the automatic transmission shifted from neutral range to a power range so as to avoid any reduction in the engine speed or the engine stall. The valve open time is controlled as a function of the engine cooling water temperature.
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Itakura Tomiya
Kamifuji Hiroshi
Hitachi , Ltd.
Hitachi Automotive Engineering Co. Ltd.
Wolfe Willis R.
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