| 摘要 |
<p>PURPOSE: To prevent an engine stall when at the time of idling, switching to a lower speed cam is made impossible by some failure. CONSTITUTION: Switching between a low speed cam and a high speed cam can be made by selective connection of main and auxiliary locker arms. In the case where a valve lift amount L is larger than a designated value LL and a high speed cam is determined (step 2) through a control signal SS of a solenoid valve for oil pressure control is OFF to be switched to the low speed cam (step 1), a warning lamp SW is lighted (step 7), and the target idle rotating speed Ni is corrected to a high speed cam idle rotating speed NH. set to the high speed side from the normal idle rotating speed NL.</p> |
