A plastic intake manifold of an automobile engine and its special briquetting block

Abstract

The invention relates to a plastic intake manifold for an automobile engine and a pressing block special for the plastic intake manifold. The plastic intake manifold and the pressing block overcome the defects that metal intake manifold brackets are additionally arranged at one or more positions of a plastic intake manifold, mounting bolts and nuts of the intake manifold brackets need to be added,the cost is increased, two rows of fastening bolts of the intake manifold are adopted, the assembly efficiency is low, and the assembly precision is poor. The plastic intake manifold and the pressingblock are characterized in that a front arc-shaped support plate and a rear arc-shaped support plate are arranged at the intake end of the intake manifold, and a net-shaped reinforcing rib formed byinterlacing a plurality of rib plates is arranged between an area defined by the front arc-shaped support plate and the intake manifold and an area defined by the rear arc-shaped support plate and theintake manifold; and an upper plane and a mounting inclined plate are arranged on the upper end face of an intake manifold mounting flange, and wedge blocks are arranged on the plane of a fixing plate of the pressing block special for the intake manifold. The plastic intake manifold for the automobile engine and the pressing block have the beneficial effects that the structure is compact, and theweight of the whole machine is reduced; and through the inclined plane press fit of the intake manifold and the pressing block special for the intake manifold, the installation and disassembly of theintake manifold are more convenient, the cost is saved, and the assembly precision and the assembly efficiency are improved.

Description

technical field [0001] The invention belongs to the technical field of automobile engine intake system, in particular to a plastic intake manifold of automobile engine and a special pressing block thereof. Background technique [0002] With the increasing load of automobiles and the use of high-speed and high-power engines, the strength of auto parts has become a major concern of auto parts manufacturers and R&D institutions. At present, lightweight design is the main idea for the design of automotive engine parts. Due to the advantages of light weight and low cost, the plastic intake manifold has gradually replaced the aluminum alloy intake manifold, but the high strength of the aluminum alloy intake manifold The performance is not available in the plastic intake manifold. During the engine test or vehicle test, the plastic intake manifold often has cracking problems caused by insufficient strength, especially the cracking frequency of the intake manifold is the highest. ,...

AI Technical Summary

Problems solved by technology

In order to ensure the stability of the fixed connection between the plastic intake manifold and the engine cylinder head, the prior art needs to insert two positioning pins into the bolt mounting holes on the engine cylinder Align the first bolt installation hole with the positioning pin and set it on the positioning pin, then install the intake manifold fastening bolts and tighten them, then install the remaining fastening bolts and tighten them, finally pull out the positioning pins, and install the remaining 2 fastening bolts And tighten it, the problem is that the installation process of the fastening bolts of the intake manifold is complicated, the assembly efficiency is low, and the positioning accuracy of the intake manifold assembly is poor. If the assembly is not in place, it will cause difficulties in the assembly of other matching parts after installation. , and even problems such as the inability to assemble

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