Patent ID: 6427107
Filing Date: 2002-07-30
Classification: E02F

Abstract:
A method of operating a construction vehicle having a steering subsystem, an implement subsystem and a power train subsystem and a source of power for operating said subsystems, said method comprising:providing a power management controller operable to allocate power to said implement subsystem, determining the amount of power produced by said source of power that is available for consumption by said steering, implement and power train subsystems and transmitting a signal indicative of said amount to said power management controller, providing a signal to said power management controller indicative of the power required by said steering subsystem, said power management controller calculating the available power for said implement and power train subsystems by subtracting the power required by the steering subsystem from the amount of power available to said steering, implement and power train subsystems. providing a signal to said power management controller indicative of the transmission output speed being requested, providing a signal to said power management controller indicative of the actual transmission output speed, said power management controller comparing said requested transmission output speed with said actual transmission output speed and calculating a speed error, and programming said power management controller to make power allocations to said implement subsystem between a maximum implement subsystem power allocation and a minimum implement subsystem power allocation dependent on said speed error.