A control method for a hybrid power system

Abstract

The invention discloses a control method for a hybrid power system. The control method independently comprises the following steps of: detecting a system state where a vehicle belongs to, wherein thesystem state comprises a driving state, a working state and a stand-by state; after a determination result shows that the system state is detected, judging the state preset value of a total driving system under the system state, wherein the state preset value comprises the preset efficiency point and torque value of the system; and through the intervention of a control system for the total drivingsystem, realizing a purpose that the system achieves a system preset value from the state preset value. By use of the control method, a vehicle running state is detected, the system state to which avehicle system belongs is judged, the intervention of the control system for the total driving system is combined to realize a purpose that the engine achieves the preset efficiency point and the torque value, a system optimization degree is further improved, an engine achieves optimal working efficiency, so that a function of energy saving and oil reduction is realized, and power waste is avoided.

Description

technical field [0001] The invention relates to the technical field of vehicle power control, in particular to a control method for a hybrid power system. Background technique [0002] As the requirements for environmental protection and energy saving and emission reduction regulations become more and more stringent, it is becoming more and more difficult to upgrade the technology of traditional internal combustion engine system forklifts to deal with emission problems, and the cost investment is also increasing, while pure electric forklifts face charging time. Therefore, it is more and more necessary to develop hybrid forklifts. On the one hand, the development of hybrid power systems can increase the load point of the internal combustion engine, so that the internal combustion engine can work near its high efficiency curve for a long time, thereby improving fuel consumption and reducing Emissions. On the other hand, hybrid drive can reduce the power demand of the whole ma...

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Problems solved by technology

[0002] As the requirements for environmental protection and energy saving and emission reduction regulations become more and more stringent, it is becoming more and more difficult to upgrade the technology of traditional internal combustion engine system forklifts to deal with emission problems, and the cost investment is also increasing, while pure electric forklifts face charging time. Therefore, it is more and more necessary to develop a hybrid forklift. The development of a hybrid system can increase the load point of the internal combustion engine on the one hand, so that the internal combustion engine can work near its high efficiency curve for a long time, thereby improving fuel consumption and reducing Emissions. On the other hand, hybrid drive can reduce the power demand of the whole machine for the internal combustion system or electric system alone, so that the power distribution under different working conditions can be more flexible and avoid unnecessary power waste. Existing needs to solve The problem is to provide a new power system supply method to solve the problem of low operating efficiency of the current hybrid power system

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