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The How to structure long-term contractsengine components of Guowu dieselMotivation has always been the main force in the field of vehicles. With the continuous upgrading of national environmental protection policies, the emission standards of vehicles are also constantly improving. The national five emission standards have become the highest emission standards for domestic diesel engines at present. Under the national fifth emission standard, the engine requires higher cleanliness and lower emission levels, which requires an upgraded version of the engine to meet the national sixth emission standard. The following will introduce the upgraded version of the engine of Guowu to achieve more perfect environmental protection. The engine upgrade of Guowu and the engine upgrade of Guowu need to meet the requirements of Guowu's emission standards. By researching new technologies and replacing more advanced components, the upgraded engine can reduce harmful substances in exhaust emissions, improve fuel economy and engine efficiency, so as to achieve a more perfect environmental protection and a better driving experience. One of the key technologies is the adoption of a new high-pressure common rail fuel injection system.The high-pressure common rail system stores fuel in a high-pressure oil reservoir and then injects fuel into the engine through a high-pressure pump. In this process, the electronic control unit of the system will monitor and control the fuel injection, and adjust the injection time and quantity according to the engine load and speed. This high-pressure common rail system can control the injection time and quantity more accurately, so as to better match the load requirements of the engine and reduce the emission of harmful substances in the exhaust gas. In addition, the upgraded diesel engine also adopts more advanced valve technology, such as variable camshaft and variable valve lift. These technologies can automatically adjust the valve lift and change the opening time and quantity of the valve according to the engine speed and load requirements, so as to reduce emissions and improve engine efficiency. For example, under low load conditions, the valve opening can be reduced, thus reducing energy waste and emissions.The new generation particle collector is also an important component of the upgraded diesel engine. A particle collector is a device located at the rear of the engine to collect solid particles in the exhaust gas, such as carbon dioxide and sulfide. Some new particle collectors can also use the chemical components in the particles to regenerate, thus increasing the life and efficiency of particle collectors. Through the improvement of these technologies, the upgraded particle collector can better meet the national six emission standards. Engine oil is another key factor in reducing emissions and improving engine efficiency. Upgraded diesel engines require lower viscosity and finer engine oil, which can better reduce internal friction and energy consumption. In addition, these oils can also reach the lubrication point faster after the engine starts, thus reducing the wear and emissions of the engine during start-up.Summarizing the upgrade of the emission standards of National 5 and National VI, it is necessary to improve the engine components accordingly, and use new technologies and more advanced construction methods to improve the efficiency of the engine and reduce emissions. Improvements in high-pressure common rail system, valve technology, particle catcher and engine oil can significantly reduce harmful substances in exhaust gas and improve engine efficiency and fuel economy. With the continuous improvement of environmental protection regulations, it is expected that more advanced technologies will continue to emerge to help alleviate environmental problems.

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