Vehicle torque demand logical algorithm of hybrid new energy vehicle

Abstract

The invention discloses a vehicle torque demand logical algorithm of a hybrid new energy vehicle. A maximum demand torque tq-max-car of a whole vehicle is obtained by using a rotation speed (n-of-vsl)before a vehicle speed is converted to a main speed reducer; a minimum demand torque is calculated by using the sum of a processed engine maximum torque (tq-max-eng-ind) and a motor maximum torque value (tq-max-mot) simulated to an engine and the tq-max-car; a difference obtained by subtracting a processed minimum torque (tq-min-clu-ems) (the minimum torque of the motor is 0) from the calculateddemand torque is multiplied by an economic mode throttle coefficient fac-tq-req-pv-hev, which is obtained by looking up an IP-FAC-TQ-REQ-PV-HEV table through a throttle and the vehicle speed, and thenan obtained product is added to the tq-min-clu-ems to obtain a finally output vehicle demand torque; the vehicle demand torque is the processed minimum torque (tq-min-clu-ems) during stepping on a brake; and through the calculated demand torque obtained from the vehicle speed to a differential mechanism, a minimum torque which can be rapidly processed and a processed maximum torque, a driver is conveniently reminded of stepping on the brake and not stepping on the brake.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a logic algorithm for torque demand of a hybrid new energy vehicle. Background technique [0002] Facing the dual pressure of energy conservation and environmental protection, the automobile industry must vigorously develop new energy vehicles if it wants to develop sustainably. However, due to the current limitation of battery capacity, the power and cruising range of pure electric vehicles are difficult to meet the needs of most car users. Among new energy vehicles, the battery cost of pure electric vehicles is too high, and the mileage of a single charge is relatively short. To meet market expectations, therefore, major domestic and foreign auto companies have focused on the breakthrough direction of new energy vehicles on hybrid vehicles. [0003] Nowadays, hybrid electric vehicles are widely used. In the world, due to fuel consumption and pollution problems, the countr...

AI Technical Summary

Problems solved by technology

However, due to the current limitation of battery capacity, the power and cruising range of pure electric vehicles are difficult to meet the needs of most car users.

Among new energy vehicles, the battery cost of pure electric vehicles is too high, and the mileage of a single charge is relatively short. To meet market expectations, therefore, major domestic and foreign auto companies have focused on the breakthrough direction of new energy vehicles on hybrid vehicles