Electronic Engine Control Device, Vehicle Equipped with Electronic Engine Control Device, and Electronic Engine Control Method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Oct 11, 2007
app pub date -
May 20, 2005
filing date -
May 28, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An engine ECU learns a base duty ratio command of an actuator for driving a throttle valve as an operation level of engine control on condition that a target idle rotation speed Nei* enters a predetermined rotation speed range during idling of an engine as one prerequisite. When the learning is incomplete, the engine ECU rejects an up request of the target idle rotation speed Nei* sent from an air conditioner ECU and prohibits the target idle rotation speed Nei* from being changed. The control procedure of the invention effectively prohibits a change of the target idle rotation speed Nei* under the condition of incomplete learning of the operation level of engine control. The prohibition of the change desirably keeps the target idle rotation speed Nei* within the predetermined rotation speed range, thus preventing failed fulfillment of the learning condition and ensuring the sufficient learning opportunities of the operation level of engine control.
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