Engine air intake pipe air tightness test device

Abstract

The invention discloses an engine intake pipe air tightness testing device in the field of testing devices. Two brackets are arranged on the base, and a lifting cylinder is installed on the upper end of the bracket through a lifting cylinder seat. The piston rod of the lifting cylinder protrudes downwards and is connected with a For the clamping block, a clamping seat is provided on the base below the clamping block, and a semi-circular groove is correspondingly provided between the opposing surfaces of the clamping block and the clamping seat; a guide rail is vertically provided on the bracket, and a sliding guide rail is provided on the guide rail. block, the slider is connected to the side of the clamping block; the base is respectively installed with a single-rod cylinder and a double-rod cylinder through the support plate, and the end of the piston rod of the single-rod cylinder and double-rod cylinder is connected with a sealing cover; the hollow double-rod cylinder The other end of the piston rod is connected with an inflation joint, which is connected to the air source through a one-way valve and an intake solenoid valve, and a pressure sensor is connected on the pipeline between the one-way valve and the inflation joint. The device can quickly test the airtightness of the engine intake pipe, the test speed is fast, and the test result is accurate.

Description

technical field [0001] The invention relates to a test device, in particular to an air tightness test device for an engine intake pipe. Background technique [0002] In the Chinese patent database, there is a pneumatic exhaust manifold airtightness testing mechanism, its application number: 201510168172.4, application date: 2015-04-11, publication number: 104792478A, publication date: 2015-07-22; the device It includes a base, a number of fixed components, a number of sealing components and a test component. Any fixed component includes a bracket and a fixture. The bracket includes a body fixed on the base and a telescopic body that can expand and contract relative to the body. A sealing assembly includes a cylinder fixed on the base, a telescopic rod connected to the cylinder, and a sealing plate fixed on the end of the telescopic rod away from the cylinder. The sealing plate is sealed and connected to the nozzle of the exhaust manifold. The test component includes an air p...

AI Technical Summary

Problems solved by technology

Its shortcoming is: this device is used for testing the exhaust manifold of the engine, because the exhaust manifold is a rigid pipe made of metal material, its sealing is relatively simple, and the design of the fixture is also relatively simple, this device cannot be used for testing The airtightness of the engine intake pipe is mainly due to the fact that the engine intake pipe is a flexible hose, and it is difficult to seal the nozzle during the test

[0003] In the prior art, the hydraulic test method is often used to test the engine intake pipe. The method is to fill the intake pipe with liquid. The test speed is slow and cannot meet the needs of high-speed testing.

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