Simulation experiment method of parallel hydraulic hybrid electric vehicle under urban cycle conditions

Abstract

The invention relates to the technical field of hydraulic hybrid power, and discloses a simulation experiment method for the urban cycle condition of a parallel hydraulic hybrid electric vehicle. Themethod comprises the steps: an experiment table controls a motor to simulate speed change of the parallel hydraulic hybrid electric vehicle under the urban cycle condition; physical elements truly reflect the working state of a hydraulic system of the parallel hydraulic hybrid electric vehicle; a host computer simulates the working states of an automobile engine, a gearbox and the like according to the real-time working state of hydraulic elements, and then the working state of the parallel hydraulic hybrid electric vehicle under the urban cycle condition is obtained. The experiment table of the experiment method is composed of an energy accumulator, a hydraulic pump / motor, a pump station, a pressure sensor, a torque coupler, a dynamometer and the motor.

Description

technical field [0001] The invention relates to the technical field of hydraulic hybrid power, in particular to a simulation experiment method for urban cycle working conditions of a parallel hydraulic hybrid power vehicle. Background technique [0002] With the rapid development of industrial technology worldwide, the problems of energy shortage and environmental pollution are becoming more and more serious. Hydraulic hybrid power technology is considered to be one of the effective solutions to the energy crisis and environmental pollution problems. Hydraulic hybrid power has the advantages of high power density, high energy cycle efficiency, etc., and can provide a large braking torque during braking, which can obviously Improve the energy saving effect of hybrid vehicles. A hydraulic hybrid vehicle is a hybrid vehicle that outputs power simultaneously or in time by coordinating the engine and the hydraulic auxiliary drive device through control. The power density of the...

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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the object of the present invention is to provide a simulation experiment method of the city cycle working condition of a parallel hydraulic hybrid electric vehicle, and simulate the city cycle working condition of a parallel hydraulic hybrid electric vehicle on the test bench. The present invention can It overcomes the problems of high cost and environmental impact of the parallel hydraulic hybrid vehicle in the prior art, and it can also overcome the pure computer simulation and actual conditions of the parallel hydraulic hybrid vehicle urban cycle working condition in the prior art. Disadvantages of big difference

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