Hydraulic hybrid vehicle simulation test bench

Abstract

The invention discloses a hydraulic hybrid vehicle simulation test bed which aims at solving the problems that the cost of a researched and developed field test is high, the influences from the environment are large, and simulation of a computer is not accurate. The test bed comprises a real-time simulation system and a hydraulic real object rack. The real-time simulation system is composed of a controller, a DSPACE system and an upper computer. An AD port of the controller is connected with a DA port of the DSPACE system through a wire, and the upper computer is connected with the DSPACE system through an optical fiber. The hydraulic real object rack comprises an oil source part, a testing part, an energy storage part and a loading part. An oil outlet of a second one-directional quantitative hydraulic pump of the oil source part is connected with an oil inlet of a first one-way valve of the testing part, a torque and rotational speed sensor of the testing part is connected with an input shaft of a two-directional quantitative hydraulic pump of the loading part through a key, a port A of a second two-position two-way reversing valve of the energy storage part is connected with a port B of a first three-position four-way reversing valve of the testing part, and the hydraulic real object rack is connected with the controller through a wire.

Description

technical field [0001] The invention relates to a test bench for simulating the actual working conditions of automobiles, more precisely, the invention relates to a simulation test bench for hydraulic hybrid electric vehicles. Background technique [0002] Facing the current situation of energy shortage and increasingly serious environmental pollution, energy saving and environmental protection have become the only way for the development of automobiles. Hybrid electric vehicle is currently the most effective energy-saving vehicle solution, and its drive system has three forms: series connection, parallel connection and hybrid connection. According to the different auxiliary energy sources, hybrid vehicles can be divided into oil-electric hybrid and hydraulic hybrid. However, the current low power of the battery is short, the cost of the motor controller is expensive, and the control technology is not mature, which limits the development of hybrid electric vehicles; the hyd...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problems of high cost of actual vehicle testing in the research and development of hydraulic hybrid electric vehicles in the prior art, which are greatly affected by the environment, and the computer simulation is not accurate enough, and provides a simulation test bench for hydraulic hybrid electric vehicles

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