Study On Virtual Experiment Platform Of Hydraulic Hybrid Vehicles

The problem of the energy consumption and ecological destruction of the environment we need to face as the rapid development of the automobile industry nowadays. So there have many automobile companies cost so much money to research in the new energy vehicles and the government also promotes the benefit policy to support the new energy vehicle. Because of the Hydraulic hybrid technology has power density characteristics, so it suits for which use heavy loads stop frequency construction machinery or city bus.In the actual experiment test platform, it can cost a lot of capital investment and time consuming because of the continuous improvement of the hardware and the software system. So if we could set done all the simulation parameters to match the system at the virtual environment before the real experiment, it will reduce the test costs and save the time greatly.In this paper, it based on the existing hydraulic hybrid experimental platform, to set up the mathematical model about the key components, such as accumulators, secondary components, etc. To set up the physical structure modeling of the hydraulic hybrid vehicle by the AMESim software, then build the hydraulic valve structure through the HCD library can make it function accurate, bring them close to the actual situation.In order to ensure that the hydraulic hybrid vehicle work successfully, I put forward the control strategy to fulfill the accurate steps.To compile the experiment control procedures is by Lab VIEW software and then build a virtual experiment platform by co-simulation of AMESim and Lab VIEW. During the experiment, we do these conditions as below:the experiment about the recover the braking energy during braking conditions; the experiment about the regenerative energy-driven during the driving condition; the experiment about the different initial pressures of the accumulator, different displacement of the secondary elements; the experiment about the different engine speed when braking.Through multiple simulation tests, the results are consistent with the actual platform basically, verified the feasibility of the virtual experiment platform and laid a good foundation to set the parameter more detailed on the virtual experiment platform when build the model.