Continuous variable-length air intake manifold

Abstract

The invention provides a continuous variable-length air intake manifold, belonging to the technical field of automobiles. The continuous variable-length air intake manifold solves the problems that the existing air intake manifold cannot accurately control the length of the air intake duct of the air intake manifold under different working conditions and cannot enable an engine to be kept with optimum air intake efficiency at different rotating speeds. The continuous variable-length air intake manifold comprises a first shell and a second shell which is hermetically connected with the first shell. An air inlet is arranged on the side surface of the first shell. An air outlet is arranged on the side surface of the second shell. A continuously variable mechanism which can continuously change the length of an air duct from the air inlet to the air outlet is arranged between the internal part of the first shell and the internal part of the second shell. The continuous variable-length air intake manifold can accurately control the length of the air intake duct of the air intake manifold under different working conditions and also can enable the engine to be kept with optimum air intake efficiency at different rotating speeds.

Description

technical field [0001] The invention belongs to the technical field of automobiles and relates to a continuously variable-length intake manifold. Background technique [0002] With the advancement of society and the rapid development of the automobile industry, people's living standards continue to improve, and automobiles have become one of the important means of transportation for people to travel. The operating speed range of the automobile engine is very wide. In the entire operating speed range, the intake air volume required for each working condition is different. In order to better improve the output performance of the engine in the entire speed range, one method is to optimize The airflow organization of the intake air improves the charging efficiency of the engine at each speed. [0003] In the existing technology, a fixed-length intake manifold is generally used to inflate the engine cylinder; however, due to the intermittent and periodic nature of the intake pro...

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Problems solved by technology

[0005] According to the above situation, a variable length intake manifold for engines has appeared on the market, such as the continuously variable length intake manifold disclosed in Chinese Patent No. "200920158872.5", including the intake manifold body, The inlet end of the manifold body is connected to the air intake cavity, and the outlet end is connected to the air inlet of the engine cylinder head, and the length of the manifold body is adjustable; in the above-mentioned structure, the length of the manifold body is adjustable, although the manifold The length of the intake passage is continuously variable, but the length of the intake manifold is adjusted manually, which is inconvenient to adjust, and the length of the intake passage of the intake manifold under various working conditions cannot be precisely controlled, and the engine cannot be adjusted in each working condition. Optimum air intake efficiency at all speeds

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