HS code-based quality control checks

Engine classification (Introduction to automobile engine classification and HS code-based quality control checkscharacteristics) The engine is one of the core components of the automobile, which directly affects the performance and use experience of the vehicle. Therefore, it is very necessary to understand the classification and characteristics of automobile engines. This article will briefly introduce the classification and characteristics of automobile engines for readers' reference. And. Gasoline engine Gasoline engine is a kind of engine that uses gasoline as fuel. Its main feature is high power, which is suitable for high-speed vehicles, but consumes a lot of fuel. Gasoline engines can be divided into naturally aspirated engines and supercharged engines: 1. NatureIntake engine Naturally aspirated engine refers to the inhalation of a large amount of air through the downward movement of the piston, thus forming gas compression, causing the oil-gas mixture to explode to generate power. Its main features are easy to start, stable output, small noise, but low output power. Two. Supercharged engine Supercharged engine refers to the addition of turbocharging or mechanical supercharging device on the basis of a naturally aspirated engine to enhance the output power of the engine through supercharging, so that the car has the ability to drive and accelerate at high speed, but also increases fuel consumption. Supercharged engines are mainly divided into turbocharged engines and mechanical supercharged engines. II. Diesel engine Diesel engine is a kind of engine that uses diesel as fuel. Its main characteristics are low fuel consumption and strong power. It is suitable for long-distance cars, but it is noisy. Diesel engines are mainly divided into conventional diesel engines and high-pressure common-rail diesel engines: 1.Conventional diesel engines Conventional diesel engines use compressed air to ignite fuel, which can provide sufficient power output at low speeds and work stably under high loads. However, due to the high combustion temperature of diesel, the noise is relatively large. Two. High-pressure common rail diesel engine High-pressure common rail diesel engine is a diesel engine that adopts high-pressure oil pump and common rail injection technology. It can achieve fine fuel injection, improve combustion efficiency, and greatly reduce the noise and emissions of diesel engines, while improving its fuel economy. III. Hybrid engine Hybrid engine is composed of batteries, generators and power motors, etc., which can automatically switch between electric motor power and internal combustion engine power, and can be charged by recovering brake energy. Hybrid powerThe advantage of motivation is to reduce fuel consumption at low speed and idling, and at the same time, it can use the internal combustion engine to provide sufficient power output when driving at high speed. The above is a brief introduction to the main classifications and characteristics of car engines. For consumers, when buying a car, they need to consider their own car needs and budget to choose an engine type and model that suits them.

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