Engine air inlet structure

Abstract

The invention provides an engine air inlet structure which comprises air inlet channels arranged on an air cylinder cover and an air inlet manifold connected with the air inlet channels, the air inlet manifold comprises an inlet pipe with a manifold inlet formed in one end, a pressure stabilizing cavity communicated with the other end of the inlet pipe and multiple manifold branch pipes communicated with the other end of the pressure stabilizing cavity relative to the end connected with the inlet pipe. The air inlet channels are connected with the manifold branch pipes in a one-to-one correspondence mode, based on the vertical line distance between the two ends of the branch pipe lower edge line of each manifold branch pipe and the vertical line distance between the two ends of the lower edge line of each air inlet channel, the sum of the length of the manifold branch pipes and the length of the air inlet channels ranges from 80 mm to 90 mm, and the ratio of the length of the manifold branch pipes to the length of the air inlet channels is (2.8-3.2): 5. According to the air inlet structure, the air inlet amount of the engine can be increased by setting the length of the manifold branch pipes and the length of the air inlet channels.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an engine intake structure. Background technique [0002] The high performance and low fuel consumption of automobiles have always been the goals pursued by various automobile companies. As the power source of automobiles, the performance of the engine is the key to achieving the above goals. In the engine, the combustion system is one of its important components, and the intake air volume during the operation of the combustion system is an important means of guaranteeing the power and economy of the engine. In the process of designing an automobile engine, it is necessary to carry out a large number of matching and optimization settings on its combustion system. As an important part of the engine intake system, the intake manifold and intake port are important for the improvement of engine combustion. . [0003] However, on the one hand, the current OEMs only consider the dire...

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Problems solved by technology

[0003]However, on the one hand, when designing the intake manifold, the current OEMs only consider the direction of intake uniformity, and generally ignore the impact of the intake manifold on the engine. The influence of air quality

On the other hand, when the existing intake port structure is in use, the intake gas will be heated by the cylinder head in the intake port, which will also cause the density of the intake gas to decrease, which will reduce the quality of the intake air under the same volume, thereby affecting Air intake performance to the engine

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