Plastic air intake manifold assembly for naturally aspirated engine

Abstract

The invention discloses a plastic air intake manifold assembly for a naturally aspirated engine. The plastic air intake manifold assembly comprises a cylinder cover flange, an intake manifold, a pressure-stabilized chamber and a throttle valve flange, wherein air sequentially flows through the throttle valve flange, the pressure-stabilized chamber, the intake manifold and the cylinder cover flangeand then enters an air intake channel of the engine; the cylinder cover flange is arranged above the pressure-stabilized chamber; the throttle valve flange is arranged at one side of the pressure-stabilized chamber; the intake manifold is in a coiling shape and wraps the pressure-stabilized chamber; the plastic intake manifold assembly is manufactured by sequentially welding a first outer sheet,a lower intermediate sheet, an upper intermediate sheet and a second outer sheet through a vibrating friction welding technology; the first outer sheet, the lower intermediate sheet, the upper intermediate sheet and the second outer sheet are manufactured through nylon. According to the plastic air intake manifold assembly for the naturally aspirated engine, the nylon sheets are welded through thevibrating friction welding technology to form the plastic intake manifold assembly, so that the density is low; the mass is light; the inner wall is smooth; the dynamic property of the engine can beimproved, and the fuel oil consumption can be reduced; the air intake resistance is low, so that the dynamic property of the engine can be played highly, and moreover, the fuel oil consumption rate can be reduced.

Description

Technical field [0001] The invention relates to the technical field of automobile engines, in particular to a plastic intake manifold assembly for a naturally aspirated engine. Background technique [0002] When a naturally aspirated engine is working, it is difficult to obtain a higher power output because of the less intake air at low speed. If the intake manifold pipe length is appropriately designed, according to the valve opening and closing timings at different engine speeds, the inertia effect of the intake air in the entire intake passage can be used to maximize the intake air volume at a certain engine speed and achieve better performance. Good engine power. The length of the intake manifold can be determined by simulation analysis of one-dimensional engine performance. [0003] At the same time, in order to minimize the intake loss, improve engine power and reduce fuel consumption, the intake manifold is required to be lightweight and have good inner wall roughness. Mo...

AI Technical Summary

Problems solved by technology

[0002] When the naturally aspirated engine is working, it is difficult to obtain high power output due to the small amount of intake air at low speeds

Images