Engine intake manifold

Abstract

The invention discloses an engine intake manifold with adjustable length, which is characterized by being capable of improving the dynamic property of a car engine. The engine intake manifold comprises a manifold body; the inlet end of the manifold body is connected with an intake cavity and the outlet end thereof is connected with the intake port of an engine cylinder cover; and the length of the manifold body can be adjusted. By the adjustable length of manifold body, the engine can achieve the matching of the intake amount with the engine speed by changing the length of the manifold body at any speed, thereby improving the dynamic property of the engine at any speed; and the adjustment of the manifold body length can also lead the intake speed to change correspondingly, thereby improving the combustion process and the fuel economical efficiency to some extent, and accordingly reducing the emission of waste gases, and the engine intake manifold is especially suitable for the promotion and use on a car engine.

Description

technical field [0001] The invention relates to an engine intake manifold, in particular to an engine intake manifold with adjustable length. Background technique [0002] At present, each cylinder of the engine will have an intake manifold. The intake manifold refers to a pipe that is connected to the intake valve at one end and the intake resonance chamber at the other end of the intake manifold. The difference in the design of the intake manifold will affect the performance of the engine, and the length is a very important one. In the prior art, an intake manifold with a fixed length is generally used to inflate the engine cylinder. However, due to the intermittent and periodic nature of the intake process, pressure waves of a certain magnitude are generated in the intake manifold. This pressure wave propagates and reflects back and forth in the intake system at the speed of sound. If the intake manifold with a certain length and diameter and a resonance chamber with a...

AI Technical Summary

Problems solved by technology

[0003] Therefore, the traditional fixed-length intake manifold obviously cannot take into account the intake resonance at different speeds. Therefore, for an engine using a fixed-length intake manifold, only a compromise length can be selected, and it cannot provide the best performance for any engine speed. Good gas distribution

The power of the engine is poor, and the fuel consumption rate is high, and the pollution caused by the exhaust emission of the vehicle is also large.

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