METHOD FOR ACCELERATING THE WARMING-UP OF A MOTOR VEHICLE POWER UNIT IN ORDER TO PLACE IT UNDER OPERATING CONDITIONS FOR TESTING AND/OR FOR A MAINTENANCE OPERATION
The present invention relates to a method for accelerating the warming-up of a vehicle power unit comprising an internal combustion engine, the unit needing to undergo testing and/or a maintenance operation during which the vehicle remains stationary with its engine running, the unit needing to have reached a minimum operating temperature prior to the test and/or to the operation, the unit comprising a system for injecting fuel with a high-pressure pump (3) supplying pressurized fuel to one or more injector(s) (1), the pressurizing of the fuel by the pump (3) being controlled according to a combustion configuration requiring a nominal pressure value dependent on operating parameters one of which is engine speed and one of which is engine torque, the method comprising a step of warming up the unit by maintaining a highly accelerated idling speed performed at a modified pressure value higher than the nominal pressure value.
