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

A technology of hybrid electric vehicles and cyclic working conditions, which is applied in the field of hydraulic hybrid power, can solve the problems of large environmental impact, large difference between computer simulation and reality, and high cost, and achieve the effects of low test cost, small occupied space, and improved efficiency

CN110595796BActive Publication Date: 2020-09-11YANSHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-09-11

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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.
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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...

Examples

Embodiment Construction

[0065] Hereinafter, features of exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0066] The present invention controls the motor with the control mode of constant speed through the test bench to simulate the speed change of the parallel hydraulic hybrid electric vehicle under the urban cycle working condition; The torque coupler 8 truly reflects the working state of the hydraulic system of the parallel hydraulic hybrid electric vehicle; the host computer simulates the working state of the automobile engine and gearbox according to the real-time working state of the hydraulic components, and then obtains that the parallel hydraulic hybrid electric vehicle is in the city. ...