【文章內(nèi)容簡(jiǎn)介】 cause of these features, previously used in diesel engines, medium radial truck. The new development : small highspeed diesel engine emission standards has been achieved in Euc22 rope III. Traditionally, due to relatively heavy diesel engine or gasoline engine power as indicators (low speed), noise, vibration higher. Smoke and carbon particles (PM) emissions is fairly serious, very little has been favored by car. But with the advances in technology in recent years Diesel, especially small highspeed diesel engine is a new development of a number of advanced technologies, For example, electronic control DI, mon rail, turbocharged, in the cold light of technology, such as the use of diesel engines. The shortings of the original diesel engine to be a better solution. and the diesel engine39。s advantages in energy and CO2 emissions. including the gasoline engine is no way to replace all heat engines, advanced highspeed small diesel engines. The European III emission standards has been achieved, the green engine that Many cars in Europe and the United States has now bee the new power plant, it can be predicted that China will see an increasing number of diesel cars. ICE is a heat engine. Usually can burn the fuel used to be in : gasoline engine, gas and other types of aircraft. Because the gasoline engine light, low noise and environmental protection, it won the public good reputation, Therefore anic in its national economy and national defense projects has been more widely used. Engine Heat Transfer to a large extent the key to the economic gasoline engine, reliability and other important technical and economic indicators. The gasoline engine load increasing today, the research gasoline engine heat load problems is very urgent task. High gasoline engine to enhance the development direction of its mechanical parts load and thermal load is increasing, and The gasoline engine and the cylinder sets of gas pression, bustion and expansion of the space, and to orient the Pistons, It39。s not normal deformation of the cylinder and piston damage the normal clearance, resulting in the deterioration process. Therefore, how to reduce the gasoline engine heat load, it is to enhance its overall performance an important research topic. Engine The engine acts as the power unit. The internal bustion engine is most mon: this obtains its power by burning a liquid fuel inside the engine cylinder. There are two types of engine :gasoline(also called a sparkignition engine) and diesel(also called a pressionignition engine).Both engines are called heat engines。 the burning fuel generates heat which causes the gas inside the cylinder to increase its pressure and supply power to rotate a shaft connected to the transmission. Body An automobile body is a sheet metal shell with windows, doors, a hood, and a trunk deck built into it. It provides a protective covering for the engine, passengers, and cargo. The body is designed to keep passengers safe and fortable. The body styling provides an attractive, colorful, modern appearance for the vehicle. Chassis The chassis is an assembly of those systems that are the major operating part of a vehicle. The chassis includes the transmission, suspension, steering, and brake systems. Transmission systems ― conveys the drive to the wheels. The main ponents are clutch, gearbox, driveshaft, final drive, and differential. Suspension― absorbs the road shocks. Steering― controls the direction of the movement. Brake― slows down the vehicle. Electrical Equipment The electrical system supplies electricity for the ignition, horn, lights, heater, and starter. The electricity level is maintained by a charging circuit. This circuit consists of the battery, alternator (or generator). The battery stores electricity. The alternator changes the engine39。s mechanical energy into electrical energy and recharges the battery. Engine Block The engine block is the basic frame of the engine. All other engine parts either fit inside it or fasten to it. It holds the cylinders, water jackets, and oil engine block also holds