Study On The Hydraulic Brake Energy Recovery Technology Of Sanitation Construction Vehicle

The sanitation construction vehicles is one of the important means of transport in urbanplanning and construction, due to its operation conditions of constraints, frequent starting,acceleration and braking deceleration, load change are the typical working conditioncharacteristics. When the Vehicle in the process of starting, the engine speed is low, theperformance and fuel economy are poor, that causes a lot of energy loss and at the same time,the vehicle emissions of exhaust gas pollution is quite serious. According to the world ofautomobile manufacturer’s association statistics, the car consumes oil accounts for about50%of the world’s oil consumption. With the increasingly serious energy crisis and environmentalproblems，therefore,"energy saving" has become the new direction of the development of theautomotive industry. The vehicle braking energy recovery technology is an important way ofthe automobile energy saving, and more and more get people’s attention already.In this paper, the sanitation engineering vehicles, compression type garbage truck as theresearch object, to study the hydraulic brake energy recovery technology. The aim is torecycle the braking energy when vehicle in urban operation, reduce the energy consumptionof the vehicle and the environment pollution, improve the comprehensive performance of thevehicle. This paper mainly do the following works:1.The analysis of the existing vehicle braking energy recovery technology of the form anddevelopment situation at home and abroad, compared the advantages and disadvantages of allkinds of energy recovery technology, selected the parallel hydraulic brake energy recoverytechnology as the design of the study.2.According to the actual vehicle parameters, matching parameters for the parallel brakingenergy recovery system, including the reasonable selection and matching of hydrauliccomponents, energy recovery and release process design and calculation of transmissionsystem and calculate the distribution of the front and rear wheels of vehicle braking torque.Adopted a fixed proportion of braking torque allocation algorithm, in order to make sure thebrake safety under the premise of recycling the vehicle’s braking energy.3.Through AMESim simulation software to build the vehicle in the process of brakingenergy recovery system modeling, and make the regenerative braking and compound braking process simulation. The simulation results show that the reasonable allocation of the front andback brake torque, in the premise of the safety brake, the driver should change the brakingintensity, using hydraulic pure renewable energy as much as possible can improve the energyrecovery, achieve the effect of energy saving and expectations are basically identical.Changing the secondary element displacement to the improvement of energy recovery islimited, but has a significant effect for the vehicle’s braking time.