Engine intake manifold

Abstract

An engine intake manifold is used for matching the intake swirl to an engine under different operating conditions in order to enhance the comprehensive performance of the engine. The engine intake manifold comprises an inlet end flange, a pressure-stabilizing cavity, intake branches, an outlet end flange and an intake swirl regulation mechanism, the front end surface of the inlet end flange is connected with an intake connecting pipe behind an air filter of an engine, the rear end of the inlet end flange is connected with the air inlet of the pressure-stabilizing cavity, the pressure-stabilizing cavity is of a two-piece type butt joint structure, the group of intake branches are arranged on the sidewall opposite to the air inlet of the pressure-stabilizing cavity, the rear ends of the intake branches are connected with the outlet end flange, the axes of the intake branches make the included angle of 135 degrees with the axis of the outlet end flange, and the outlet end flange is connected with the intake passage of the cylinder head of the engine. The structure of the engine intake manifold is simple, and is compactly arranged, and the engine intake manifold can meet the requirement of the lightweight design of automobile engines, reasonably guide intake flow and improve the power performance, economic performance and emission indexes of engines.

Description

technical field [0001] The invention relates to an automobile engine intake manifold structure, which belongs to the technical field of combustion engines. Background technique [0002] In recent years, with the increase of automobile ownership and stricter emission regulations, energy saving and consumption reduction have become the main requirements of automobile engine design. In order to further improve the economic performance and emission index of the engine, more and more new technologies are adopted in the automobile engine. [0003] The intake manifold is the passage that sends air into each cylinder of the engine and plays a role in guiding the air flow. The structural characteristics of the intake manifold have an important impact on the performance parameters of the engine such as power, fuel consumption, torque and emissions. The disadvantage of the traditional intake manifold is that the airflow entering each cylinder of the engine is not uniform, so that the ...

AI Technical Summary

Problems solved by technology

The disadvantage of the traditional intake manifold is that the airflow entering each cylinder of the engine is not uniform, so that the size of the vortex generated by each cylinder is different, resulting in different combustion conditions of each cylinder, causing combustion deterioration and emission deterioration

Especially the intake manifold made of cast aluminum alloy, due to its complex structure and high mass, not only increases the difficulty of manufacture, but also does not meet the design requirements of lightweight; moreover, the inner cavity of the intake manifold is not smooth, resulting in large intake resistance , Inflatable efficiency is low, it is difficult to achieve the best cooperation with the engine working conditions, so that the engine performance cannot be fully exerted

Images