| 摘要 |
<p>PURPOSE:To avoid sudden variation of engine output and advance the practi cable switchover time of a variable valve system to a high speed operation mode when the oil temperature is equal to or less than a specified temperature by fixing the cam of an output characteristic variable engine to a certain cam and equipping a control means for accomplishing change control of an automatic transmission speed change characteristic. CONSTITUTION:The oil temperature of an oil pressure type variable valve system is detected by an oil temperature detecting means 103. When the detected result is equal to or lower than the specified temperature, a control means 104 judges that it is the low temperature time with high driving oil viscosity and fixes the can of an output characteristic variable engine 101 to a certain cam. When the oil temperature detection signal of an oil sensor 211 indicates a temperature lower than the specified temperature, a controller 213 fixes the cam to a fuel consumption cam by means of a cam switchover control. Power train control is accomplished by switching the speed change characteristic of an automatic transmission 202 over to a two-dimensional speed change characteristic, by means of speed change control, corresponding to a vehicle speed for low oil temperature time and the engine throttle opening.</p> |
