汽油机和柴油机的区别,以及马力、扭矩,二者与转速的关系（The difference between a gasoline engine and a diesel engine, and the relationship between the horsepower and torque, the two and the speed）.docVIP

汽油机和柴油机的区别,以及马力、扭矩,二者与转速的关系（The difference between a gasoline engine and a diesel engine, and the relationship between the horsepower and torque, the two and the speed） The difference between a gasoline engine and a diesel engine, and the relationship between the horsepower and torque, the two and the speed Analysis of advantages and disadvantages of gasoline engine and diesel engine The gasoline engine in the gas mixture is ignited, burning, and a burst of energy, so can this cycle can be repeated many times in the unit time, with high speed and high output power, small volume, light weight, can have higher performance and faster response speed, wide speed range and can bring better feel control. But the compression ratio of gasoline engines is usually only half of that of diesel engines. When the power stroke is done, the temperature and pressure in the cylinder are much lower than that of the diesel engine, so the thermal efficiency is low, which is commonly called oil. Diesel fuel is injected into the combustion, take some time, so is suitable for low speed make full combustion of fuel to bring large torque, and in order to fight in the cylinder of high pressure and large torque, diesel engine cylinder and piston rod parts than gasoline engine gasoline engine is strong, so the more cumbersome. But it is because of the high compression ratio, low speed characteristics, can better heat into kinetic energy, so the diesel engine has better thermal efficiency, that is, better fuel consumption performance. This is why cars and buses use gasoline engines in general and buses, trucks and other large vehicles use diesel engines. Diesel engine status With the development of technology, the diesel engine has greatly improved ride comfort and volume, manufacturing process of high strength aluminum cylinder, reduce the weight of the engine exhaust gas; postprocessing and particle recovery and reduce exhaust pollution; fuel high-pressure common rail injection and low compress