Engine intake manifold

A technology of intake manifold and engine cylinder, which is applied to engine components, machines/engines, mechanical equipment, etc. It can solve the problems of automobile exhaust pollution, poor engine power, high fuel consumption rate, etc., and achieve improved fuel economy and improved combustion process, the effect of improving dynamics

CN101555846AInactive Publication Date: 2009-10-14张成兴
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2009-10-14
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Examples

Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Such as Figure 1 ~ Figure 4 As shown, the engine intake manifold of the present invention includes a manifold body, the inlet end of the manifold body is connected with the intake chamber 1, and the outlet end is connected with the engine cylinder head air inlet 2, and the length of the manifold body is adjustable. When taking in air, the gas first enters the intake cavity 1, and then enters the engine cylinder through the intake port 2 of the engine cylinder head after passing through the manifold body. By adjusting the length of the manifold body, when the engine is at a low speed, the length of the manifold body can be extended to match the low speed. The gas passes through the longer manifold body to improve the inertia of the airflow. Increase the intake charge; and when the engine is running at high speed, the length of the compressed ma...