| 摘要 |
A system and method for controlling the speed of a cooling fan in a vehicle such as a hybrid electric vehicle (HEV), the system comprises: a number of vehicle subsystems 107, 109, 111, 114, 115 and a vehicle controller 102. The vehicle subsystems are configured to generate a plurality of subsystem temperature signals that are indicative of a measured temperature for each vehicle subsystem; The vehicle controller is operable to generate a desired fan speed signal for each vehicle subsystem in response to each subsystem temperature signal and to compare each desired fan speed signal to each other to determine a maximum desired fan speed signal. The vehicle controller then controls a fan 160 such that the fan reaches a fan speed that is equal to or greater than the maximum desired fan speed signal. Preferably the subsystems may include a transmission unit, a generator, starter-generator, power electronic circuitry, a dc/dc converter and a motor. |
