| 摘要 |
PURPOSE: An economical driving control method of a fuel cell vehicle is provided to improve the fuel efficiency of the vehicle by controlling the speed of an air blower through limit torque. CONSTITUTION: Driver demand torque and processing driver demand torque are calculated(S102). The economical driving maximum torque of a drive motor for driving is calculated with a fuel cell controller(S103). A motor command torque value is calculated with the fuel cell controller(S104). A driving torque map is stored in the fuel cell controller. The driver demand torque is secured from the driving torque map. [Reference numerals] (A1) Accel pedal input; (A2) Motor speed input; (A3) Motor controller input voltage measurement; (B1) Torque calculation; (B2) Driver demand torque = Driving torque map(Accel pedal, speed); (B3) Processing driver demand torque = Available power map(driver demand torque); (C1) Economical driving torque maximum value calculation; (C2) Economical driving maximum power = Economical driving limit power map(motor speed); (C3) Economical driving maximum torque = Economical driving maximum power/motor maximum power(motor speed); (C4) Motor torque command = Limit maximum torque X Motor system efficiency; (D1,F1) Motor command torque calculation; (D2) Motor command torque = Economical driving maximum torque; (EE) Driving motor torque control by the motor controller; (F2) Motor command torque = Processing driver demand torque; (G1) Fuel cell demand current calculation; (G2) Demand current = Motor power map(speed, motor command torque)/Input voltage X motor system efficiency; (S104) Processing driver demand torque > Economical driving maximum torque; (S108) Command value calculation for an air blower demand flow rate : air blower motor speed control;
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