High-Pressure Air Compressor Lightweight Design

As the main means of transportation in people's daily life,the car has brought convenience to us,and has aggravated the consumption of energy.It also become a major source of pollution in the polluted environment.In response to the status,countries research on automobile brake energy has emerged around the world.There are many ways to recover the brake energy of the car.The brake energy recovery technology of the car converts the braking energy generated into electrical energy or mechanical energy storage during the braking process of the car.Among them,the air compressor as a new way of braking energy recovery is a hot spot in recent years.The high-pressure air compressor is a crucial link in this technology.The performance indexes of the compressor will directly affect the braking energy recovery effect.With the development of automotive energy reuse technology,the importance and necessity of developing high-pressure air compressors is further reflected.In recent years,the energy recovery technology of automotive brake has been greatly developed,and the situation behind the development of the automotive industry has improved.A new type of lightweight high-pressure swash plate air compressor system emerges as the times require.The system is stable and controllable,and can meet the requirements of highpressure and lightweight.As a new energy storage component,the compressor is applied to a hybrid vehicle with an automotive brake energy recycling system.Based on the working principle of the traditional compressor.Multi-stage compression with double-sided cylinder arrangement and progressively smaller cylinder diameter,matching with grading cooling.The main research work is:(1)Performance analysis of high pressure swash plate air compressors.Analytical work mainly includes three aspects of thermodynamics,kinematics and dynamics.Starting from the gas state in the cylinder,the thermodynamics of the compressor was used to determine the key parameters such as temperature and pressure by using the Runge-Kutta method.In order to understand the performance of the high-pressure swash plate compressor,the kinematics and dynamics of the compressor are analyzed,and important parameters such as speed,plunger force and dynamic unbalance are clarified.The MATLAB is used to optimize the above parameters of the compressor to determine the optimal motion and mechanical state.Determine the parameters such as the diameter and length of the cooling pipe.(2)Three-dimensional research and design of the overall structure of lightweight high-pressure swash plate compressor.The scheme is determined to be a swash plate type for the compression mechanism type,and the cylinder arrangement is a doublesided five-row ten cylinder.Further determine the main structural parameters of the swash plate angle and cylinder diameter of the lightweight high-pressure compressor.On this basis,the three-dimensional design of the compressor is mainly carried out from the selection of materials and the optimization of the structure,including the lightweight and innovative design of the outer casing,the compression rotating part,the plunger and the valve body.Under the conditions of stiffness and temperature,the total weight is reduced by more than 15%,and the rationality of the structure and material selection is verified by simulation analysis.(3)The heat problem caused by multi-stage compression is designed in conjunction with the grading cooling system.To lightweight traditional multi-line cooling,each stage of the cooling process is in the same cooling circuit innovatively as the one-piece valve.Then using ANSYS to carry out experimental simulation to verify that the final exhaust gas temperature after cooling is within the limits of the temperature standard.Compared with other cooling methods,the time is extremely shorter and the cooling efficiency is higher.The simulation analysis shows that the whole design process and structure research are correct and reasonable,and can meet the requirements of technical standards.The design and analysis also provide technical support for the future manufacture of compressors and applications in automotive braking energy recovery.