Fast test device capable of simultaneously measuring air passage eddy and tumble of gasoline engine

Abstract

The invention discloses a fast test device capable of simultaneously measuring air passage eddy and tumble of a gasoline engine. The fast test device comprises three parts, namely a roller way lifting assembly, an airflow guiding assembly and a blade-type anemograph assembly. Two connecting plates below a working table board are used for fixing two synchronous motors; two worm shaft brackets are used for supporting worm shafts; the two synchronous motors drive the worm shafts, as well as worms and gears to rotate so as to realize decelerated motion; a roller way is used for placing a to-be-measured cylinder cover; two worm wheels are welded on corresponding cam shafts respectively; the roller way is erected through rotation of a cam to enable the cylinder cover to move vertically on the working table; and air passage flow parameters are measured through the blade-type anemograph, a relevant sensor and the like. The fast test device omits the operation of carrying the cylinder cover manually, dispenses with redesign of a clamping and positioning mechanism of an original air passage test stand, has the characteristics of convenient mounting and dismantling, can test the air passage of engines with more than four cylinders, and can remarkably improve the detection speed of each cylinder cover.

Description

technical field [0001] The invention belongs to the detection technology of performance parameters of an internal combustion engine, and in particular relates to a rapid testing device used for an air channel steady flow test of an internal combustion engine and capable of simultaneously measuring the vortex and tumble flow of an air channel of a gasoline engine. Background technique [0002] The optimized design of the engine intake system can make the air flow in the cylinder move in a specific way to improve its combustion process, so the characteristics of the intake system have a significant impact on the overall performance of the engine. Tumble flow is a kind of airflow movement that rotates around the vertical direction of the cylinder axis formed in the cylinder during the intake process; swirl flow is the airflow movement that rotates around the cylinder axis direction. In order for the gasoline engine to meet the requirements of good power, economy and emission ch...

AI Technical Summary

Problems solved by technology

[0003] At present, the devices for testing engine airway flow parameters are mainly divided into three types: (1) Tumble flow test device, which can only be used to test the cylinder head tumble flow strength, and the test device needs to be placed on the test bench during the test , the work intensity is high, and it is difficult to realize rapid measurement and automation; (2) eddy current test device, which can only be used to test the eddy current strength of the cylinder head, the installation position of the test device is relatively more flexible, and it is easy to realize automation; (3) hybrid test The device, which can test the tumble strength and eddy strength of the cylinder head at the same time, has the disadvantage that part of the total intake air flow is used to test the tumble strength, and the other part is used to test the vortex strength.

Because the main structure of the vane anemometer needs to be placed vertically, and the clamping is inconvenient, its application is limited. It has been only used to measure the vortex state of the intake port of the diesel engine cylinder head with a large cylinder diameter.

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