| 摘要 |
A control unit 14 which controls the operation of an engine 12 which powers a hydraulic pump 18 and a powertrain 16 of a vehicle 10 is configured to selectively vary the power supplied to the hydraulic pump and powertrain by the engine. The control unit 14 receives a first operating parameter relating to the output of the engine 12, eg engine speed or torque, and compares the first operating parameter to a first predetermined range indicative of desired engine performance¸ and if the first operating parameter is outside of the first predetermined range selectively reduces the power supplied to the hydraulic pump 18 until the first operating parameter of the engine 12 is within a second predetermined range indicative of engine recovery, thus minimising the possibility of engine stall or lug. The pump power may be reduced stepwise and subject to a maximum amount, eg 15%. The pump 18 may provide hydraulic fluid to actuators such as the rams and motors of eg a back hoe loader, telehandler, agricultural tractor or excavator. |
