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Engine mechanical efficiency refers to the ratio of the output capacity and How to access protected trade databasesinput capacity of the engine in the process of energy conversion. Improving the mechanical efficiency of the engine can reduce fuel consumption, reduce emissions, increase power output, etc., which is an important direction for engine optimization design and research and development. I. Ways to improve the mechanical efficiency of the engine 1. Improve thermal efficiency: By improving combustion efficiency and reducing heat dissipation failure, the thermal efficiency of the engine can be improved, thus improving mechanical efficiency.For example, high compression ratio design, injection technology, cooling system optimization and other methods are adopted to improve the thermal efficiency of the engine under the premise of ensuring combustion cleanliness and engine life. Two. Optimize the working process of the cylinder: optimize the working process of the cylinder by adjusting the intake, exhaust and other parameters, improve the combustion efficiency and reduce energy loss. For example, variable valve technology, variable tube long exhaust system and other methods are adopted to optimize the working process of the cylinder. 3. Reduce resistance loss: Reduce internal resistance and friction loss, such as the adoption of advanced lubrication technology, lightweight structural design, etc., which can reduce internal resistance and friction loss and improve mechanical efficiency. Four. Turbocharging system: The turbocharging system can enhance the engine power output and improve mechanical efficiency. Especially in engines with relatively small cylinder diameters, the use of a turbocharging system can overcome the problem of relatively insufficient engine power and torque.5. Integrated thermal management: By optimizing cooling, heating, gas supply and other systems, the systematic thermal management of the whole vehicle can be realized, which can improve the thermal efficiency and mechanical efficiency of the engine. For example, the combination of thermoelectric technology and waste heat utilization technology can be used to convert the waste heat generated by the engine into electric energy and heating energy, improving the energy utilization efficiency and economy of the whole vehicle. II. Application scenarios to improve the mechanical efficiency of the engine 1. Automobile industry: The automobile industry is one of the application scenarios to improve the mechanical efficiency of engines. With the development of the global automobile industry, improving the mechanical efficiency of engines has become one of the important goals of automobile manufacturers and technology suppliers. The continuous innovation of automotive engineering technology, turbocharging technology, hybrid power technology, fuel cell technology, etc. are all important ways to improve the mechanical efficiency of automotive engines. Two. AviationAerospace industry: With the development of the aerospace industry, improving the mechanical efficiency of the engine is of great significance to reducing flight fuel consumption, reducing carbon dioxide emissions, and increasing navigation time. The research and development of efficient, reliable and environmentally friendly engines has become an inevitable trend in the aerospace industry. 3. Shipbuilding industry: The shipbuilding industry is also one of the application scenarios to improve the mechanical efficiency of engines. Due to the large fuel consumption of ships, improving the mechanical efficiency of the engine can significantly reduce the fuel consumption of ships, reduce emissions, and improve the economy and environmental protection of the whole ship. In recent years, the shipbuilding industry has begun to pay attention to the research and application of improving the mechanical efficiency of engines. In summary, improving the mechanical efficiency of the engine is an important direction of engine optimization design and research and development. By adjusting the combustion efficiency, cylinder working process, turbocharging system and other parameters, the mechanical efficiency of the engine can be effectively improved.In the application scenarios of automobiles, aerospace, ships and other industries, improving the mechanical efficiency of the engine can achieve a variety of benefits such as reducing fuel consumption, reducing emissions, and increasing power output.

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