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Product Description
Automobile return pipe is an important component used in the exhaust system, and its main function is to guide the exhaust gas to the engine combustion chamber for re-combustion, so as to reduce the emission of harmful gases. According to different designs and functions, automobile return pipes can be divided into the following types:
1. EGR return pipe (exhaust gas recirculation pipe): EGR return pipe is the most common return pipe. By reintroducing a part of exhaust gas into the engine combustion chamber, the combustion temperature is lowered and the generation of nitrogen oxides is reduced, thus reducing the harmful gases emitted. The advantages are that it can effectively reduce emissions, improve combustion efficiency, reduce engine working temperature and prolong engine life. The disadvantage is that it may affect the power performance and fuel economy of the engine.
2. PCV return pipe (positive pressure ventilation system pipe): PCV return pipe is mainly used for the positive pressure ventilation system in the exhaust system, and the harmful gas generated inside the engine is discharged through the return pipe to reduce the environmental pollution. The advantages are that it can keep the internal environment of the engine clean, reduce engine oil pollution and prolong the service life of the engine. The disadvantage is that if the return pipe is blocked or damaged, it may lead to engine failure.
3. EVAP return pipe (evaporative gas control system pipe): The EVAP return pipe is mainly used for the evaporative gas control system in the exhaust system, and the evaporative gas generated in the fuel tank is recovered and re-burned through the return pipe to reduce the pollution to the atmosphere. The advantage is that it can effectively control the evaporative emission of fuel and improve the environmental protection performance. The disadvantage is that if the return pipe system leaks or is damaged, the vehicle emission may not meet the standard.
To sum up, automobile return pipes mainly include EGR return pipes, PCV return pipes and EVAP return pipes, each with its own advantages and disadvantages. In the process of use and maintenance, it is necessary to select a suitable return pipe according to the vehicle model, emission standards and environmental requirements, and check and maintain it regularly to ensure the normal operation of the emission system and reduce the impact of vehicles on the environment.
