Recently, various media have invariably reported on the high fuel-saving rate of Xi'an Cummins Engine. At the same time, some of the driver's friends called the China Truck Network to verify Xikang's fuel-saving performance. Next, the reporter took everyone to understand how Xi'an Cummins's ultra-high fuel economy is tempered. As we all know, the diesel engine needs to suck in a large amount of air during operation to provide the oxygen needed for diesel combustion. Therefore, the quality and quantity of intake air have become an important factor affecting the fuel consumption rate of the engine. Cummins ISM engine integrated Cummins series of five subsystems. The intake system in these five subsystems is the key to ensure the perfect intake of the engine. The engine is the heart of the whole car, and the intake system of the engine is like the human respiratory system. We must ensure the normal operation of the respiratory system to ensure that the human body has sufficient power. The engine, if it is, should provide him with the most suitable air intake for the best working condition of the engine. More and more haze has become more serious recently. Many people wear thick masks to ensure that the air they inhale is clean. Clean air is not less important to the human body than the human body. Because the fuel needs to inhale large amounts of outside air before it explodes in the cylinder, it is used to provide oxygen for combustion. If there is a lot of impurities in the air, when the mixture of fuel and air is ignited by high pressure, the generated high temperature will burn the impurities in the air into char and be adsorbed on the top of the piston and the surface of the combustion chamber. After a long time accumulation, it will form a layer. Carbon deposits cause engine knock and the volume of the combustion chamber becomes smaller, resulting in insufficient fuel combustion and engine power drop. Therefore, the air intake system of the engine is very important for the filtration of air. The filtration of air in the intake system of the Cummins ISM series engine can be said to be the ultimate, although we do not get the information of the air filter provided by Cummins, but from the valve rocker system to ensure 190,000 kilometers without adjusting the valve clearance and millions It is not difficult to see in the example without a major overhaul that the health rate of engine cylinders is much higher than that of general competitive products. When people reach the plateau, they feel dizziness and other unwell symptoms because of lack of oxygen, and the engine can also cause insufficient combustion of fuel due to lack of oxygen. Therefore, the amount of intake air directly affects the combustion rate of the engine fuel. If the supply of air is insufficient, not only the waste of fuel but also the formation of carbon due to insufficient combustion can be caused. The single-cylinder and four-valve design adopted by Xi'an Cummins provides both sufficient intake air volume and improved intake and exhaust smoothness, which reduces engine shake while saving fuel. The "people" shaped intake port design minimizes the mutual influence of the intake of each cylinder, so as to ensure the uniform intake air volume of each cylinder and the smooth running of the engine. The Cummins ISM series of engines takes pains to make the air intake system. The camshaft is a very important component in the overall structure of the piston engine. Its role is to control the opening and closing of the valve. The Cummins ISM series engine uses a high camshaft arrangement to extend the valve opening time to increase the intake air and ensure the full combustion of the fuel. In terms of the material used for the camshaft, alloy steel materials are used, large-size design, intermediate frequency quenching of the journal and cam surfaces, high design stiffness and wear resistance. Effectively extend the overall life of the engine and avoid unnecessary power consumption. The last part is the turbocharger, the most important part of the diesel engine intake system. The Cummins ISM series engine uses the Holset HX55 turbocharger, and its wastegate valve automatically adjusts airflow as needed to achieve four-step control within the speed range. The residual energy of the fuel is fully utilized in the case where the intake air amount of each level is satisfied. Recycling maximizes the use of resources and allows the engine to run more oil with less oil. Floor fan shakes head big wind electric fan Dragon Town Enterprises (Hong Kong) Limited , https://www.dragon-town.com
Xi'an Cummins Engine