Design And Development Of Hybrid Engine Start-stop System And Broken Cylinder Technology

Because the traditional car has given the world a great environmental pollution and energy issues, new energy vehicles has become the focus of the SOC iety which energy saving and emission reduction. The new energy vehicles: pure electric vehicles, hybrid electric vehicles, fuel cell vehicles, alternative fuel vehicles four. At present, because the bottleneck part of the key technologies of power battery. So vigorously the development of hybrid electric vehicle is one of the main ways of current. This paper focuses on the hybrid car, the mechanical structure of engine power source and the power source of the motor coaxial series as carrier, as the vehicle controller of hybrid vehicle core components, it is the vehicle control model and control algor ithm has become one of the key technologies in urgent need of research in this field. In the hybrid electric vehicle in the process of engineering design, the control model and control algorithm will directly affect the dynamic performance and fuel economy of the vehicle. Therefore, based on a new type of hybrid platform is proposed in this paper which engine start stop technology and the broken cylinder, has conducted the thorough research on two aspects the engine start stop control characteristics and the broken cylinder control characteristics.This paper specifically to permanent magnet synchronous motor for 7.5KW; gasoline engine 1.5L; electric clutch for 1500 N m; starter 12 KW as the research object, design and development of based on the 32 bit microprocessor platform vehicle controller, realization of low voltage hybrid mode, the specific work is as follows.1. The design of hybrid test platform, structure of hybrid using engine and motor coaxial mode. Objective can be realized in the pure electric mode, hybrid mode, in order to achieve the best oil hybrid vehicle.2. Design and development of the hybrid vehicle controller hardware and software platform, the design of control strategy, control algorithm of the vehicle controller.3. Analysis of the starting motor and the Engine fuel injection pulse curve characteristic. In view of its hybrid engine often start/stop, bring starting fee oil, start emissions bad, high speed immediately shut down the engine caused by engine carbon deposit and coolant boiling problems; for acquisition and control of ECU fuel injection pulse engine, will cause the engine failure of the ECU system error. This paper presents the engine starter SOC algorithm, ECU engine fuel injection pulse signal following simulation and drive control. The above control mode can reduce fuel engine, improving the economy of hybrid.4. In the proposed the SOC algorithm of starter, EC U engine fuel injection pulse signal following simulation and driving control characteristics, establishes the nonlinear dynamic simulation model; in depth study of the factors and the influence law which SOC correction algorithm, follow the simulation and driving control characteristics. Optimization of the engine start stop control strategy, to solve the problem of the original engine fault system error ECU when Vehicle controller that the acquisition and cont rol of ECU fuel injection pulse.The hybrid platform of the broken cylinder engine and start stop control experiment was conducted to study on the physical. To build a real test platform for the hybrid car; the vehicle controller was developed based on 32 bit microprocessor; Simulation of hybrid vehicles in different driving conditions broken cylinder and the engine start stop control and hybrid electric vehicle dynamic characteristics; verify the feasibility of the hybrid platform designed in this paper the engine start stop and broken cylinder control scheme.