Influence of cast exhaust manifold form and processing technology on gasoline engine performance

At present, the application scope of gasoline engine in our country is expanding, and because of the large reactive power loss in the operation process of gasoline engine, the consumption of energy is huge. More and more attention has been paid to the improvement of gasoline engine performance in the field of transportation. In this process, it is necessary to optimize the emission of gasoline engine reasonably in order to reduce the resistance of intake and exhaust flow and maximize the emission control. In order to optimize the performance of gasoline engine, the intake system should be optimized. As a key part of the intake system, some designers must pay attention to the optimization design of the exhaust manifold, and try to avoid the casting exhaust manifold scheme, so as to avoid adverse effects on the intake system. In this regard, the main capacity of 1.6L gasoline engine as the object of study. This paper analyzes the influence of exhaust manifold form and processing technology on the overall performance of gasoline engine in the process of optimization and transformation.

To sum up, mainly taking the optimization design of 1.6L gasoline engine as an example, through the transformation of the 1.6L gasoline engine, the original cast exhaust manifold is changed to elbow type, which can optimize the structure of the exhaust manifold, reduce the exhaust interference to the maximum extent, and improve the overall performance of the exhaust manifold. Through the research, it can be found that the exhaust manifold form and processing technology have a direct impact on the performance of gasoline engine, which is conducive to optimize the overall performance of gasoline engine. The form of gasoline engine exhaust manifold is optimized, and its processing technology is improved. The numerical simulation method is used to further improve the exhaust performance of the exhaust manifold, effectively control the actual cost of the design improvement, and ensure that the improved exhaust manifold can run better, with good environmental benefits and economic benefits. By optimizing the material and layout of the exhaust manifold, the length of the branch pipe is improved, the influence of exhaust interference on the exhaust manifold in the actual operation process is minimized, and the torque characteristics of the new exhaust manifold are increased in the performance, which greatly improves the low-speed torque of the gasoline engine, and optimizes the overall performance of the gasoline engine.

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