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The difference between diesel engines and gasoline engines

2024-04-19 433

The difference between diesel engines and gasoline engines is as follows:

Due to different ignition methods, diesel engines operate in a compression ignition mode. The so-called compression ignition refers to the pressure of the piston in the cylinder, causing diesel to self ignite under pressure, which requires a large compression ratio. Simply put, the piston is deeply pressed down;

This makes the output torque of diesel engines greater than that of gasoline engines. High torque will not affect vehicle speed, but it will affect the instantaneous acceleration and load capacity of the vehicle. So many utility vehicles use diesel, in other words, it's a grand spectacle. In addition, all diesel engines are turbocharged. This is also a characteristic;

Cleanliness: Diesel fuel is considered a clean fuel in foreign countries. Due to its cleaner emissions and lower fuel consumption, many foreign large displacement cars choose diesel fuel. But in China, on the contrary, diesel is an unclean fuel. Why? Because domestic diesel contains more wax. Wax is prone to precipitation and condensation, blocking oil pipes and exhaust systems, often resulting in pollution. So many cities in China prohibit the use of diesel systems in passenger cars.

The main differences between diesel engines and gasoline engines lie in ignition mode, output torque, and cleanliness. The diesel engine operates in a compression ignition mode, requiring a high compression ratio, resulting in a higher output torque. However, this can affect the instantaneous acceleration and load capacity of the vehicle, making it more suitable for use in utility vehicles. The gasoline engine, on the other hand, operates in an ignition mode with a relatively small output torque. In addition, diesel engines are all turbocharged, which is also one of their characteristics. In foreign countries, diesel is considered a clean fuel, and due to its cleaner emissions and lower fuel consumption, many large displacement foreign cars choose diesel fuel. However, in China, diesel is considered an unclean fuel because domestic diesel contains a lot of wax, which can easily precipitate and condense, clog oil pipes and exhaust systems, and often emit pollution. Therefore, many cities in China prohibit the use of diesel systems in passenger cars.