Acceleration control method for hybrid car

Abstract

The invention discloses an acceleration control method for a hybrid car. The method includes: fast torque, torque maintaining and slow torque, to be more specific, determining whether to allow transient acceleration assisting power or not according to the electricity quantity of an energy storage system, and forbidding the transient acceleration assisting power if electric quantity is low so as to guarantee that the electric quantity is sufficient to start the car; triggering the fast torque if the electric quantity is sufficient and an accelerator pedal is opened fast; increasing the torque with the increasing time and step length of the fast torque until the target assisting torque is reached when the timing time of the fast torque is not reached; judging whether a slow torque stage is entered or not if the timing time of the fast torque is reached, if not, entering a torque maintaining stage, and calculating the target assisting torque in delay timing time; entering the slow torque stage if delay timing overtime occurs; by motor assisting torque, controlling cycle degreasing minimum torque with the time and step length of the slow torque, and performing direct resetting.

Description

technical field [0001] The invention relates to the technical field of vehicle acceleration control, in particular to an acceleration control method for a hybrid vehicle. Background technique [0002] As we all know, the fuel consumption of a car will be much higher when it is frequently started and accelerated than when it is driven at a constant speed. When the engine accelerates, you can also feel the obvious pungent smell of exhaust gas, which means that the emissions will deteriorate when the engine accelerates. The reason for this situation is not only the low thermal efficiency of the engine at low speed, but also an important reason is the appearance of transient fuel. The main function of transient fuel is to satisfy the instantaneous power of the engine during acceleration and obtain a good driving experience. [0003] For the port injection engine, the fuel is injected on the back of the intake valve, and the combustion heat transmitted by the intake valve is use...

AI Technical Summary

Problems solved by technology

[0005] The actual technical problem to be solved in the present invention is: aim at the deficiencies in the prior art, provide a kind of acceleration control method for hybrid electric vehicles, to solve the problems mentioned above

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