What Are the Types of Automotive Engines?

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Automotive engines can be categorized based on their power sources into diesel engines, gasoline engines, electric vehicle motors, and hybrid systems. The details are as follows: 1. Diesel Engine: The advantages of diesel engines include high torque and excellent fuel economy. The working process of a diesel engine shares many similarities with that of a gasoline engine, with each cycle going through four strokes: intake, compression, power, and exhaust. However, since diesel fuel is used, which has higher viscosity and lower volatility compared to gasoline, and its auto-ignition temperature is lower, the formation of the combustible mixture and the ignition method differ from those of gasoline engines. 2. Gasoline Engine: A gasoline engine is an internal combustion engine that converts the internal energy of gasoline into kinetic energy. Due to gasoline's low viscosity and high volatility, it can be injected into the cylinder via a fuel injection system. After compression reaches a certain temperature and pressure, it is ignited by a spark plug, causing the gas to expand and perform work. Gasoline engines are characterized by high rotational speed, simple structure, lightweight, low cost, smooth operation, and ease of maintenance. They are widely used in automobiles, especially in small cars. 3. Electric Vehicle Motor: An electric vehicle motor is an electromagnetic device that converts or transfers electrical energy based on the principle of electromagnetic induction. Also known as a motor, it is represented by the letter 'M' in circuits. Its primary function is to generate driving torque, serving as the power source for electric vehicles. 4. Hybrid System: A hybrid system refers to a vehicle that uses both gasoline and electric power for propulsion. The advantage is that when the vehicle starts or stops, it relies solely on the electric motor. The engine does not operate until a certain speed is reached, thus keeping the engine in its optimal operating condition, ensuring good performance and very low emissions. Additionally, the electricity is generated by the engine, so only refueling is required.