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High-pulsation-resistance exhaust system design method of piston engine and exhaust system

A piston engine and exhaust system technology, applied to engine components, machines/engines, exhaust treatment, etc., can solve the problems of weakening the mechanical vibration of the supercharger and large pressure pulsation at the inlet of the turbine, so as to achieve stable operation and damping Good shock absorption effect and reduce wear and tear of parts

Active Publication Date: 2017-11-07
北京领动国创科技有限公司
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AI Technical Summary

Problems solved by technology

It is used to solve the problem of large turbine inlet pressure pulsation in the exhaust gas turbocharger. At the same time, a large damping floating thrust bearing is used in the supercharger to effectively weaken the mechanical vibration of the supercharger.

Method used

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  • High-pulsation-resistance exhaust system design method of piston engine and exhaust system
  • High-pulsation-resistance exhaust system design method of piston engine and exhaust system
  • High-pulsation-resistance exhaust system design method of piston engine and exhaust system

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] Such as figure 1 As shown, the pipeline system in the anti-high pulsation exhaust system of the present invention is directly connected with the exhaust port of the engine cylinder.

[0036] Such as figure 2 As shown, the anti-high pulsation exhaust system involved in the present invention mainly includes three parts: two exhaust manifolds, an exhaust manifold containing an exhaust regulator, and a large damping anti-high pulsation Floating thrust bearing.

[0037] Such as image 3 As shown, the design of the exhaust manifold not only includes the design of the length and diameter, but also includes the planning of the specific shape line. The shape line design of the manifold has a great influence on the loss in the exhaust process of the engine.

[0038] Such as Figure 4 As shown, the exhaust regulator designed on the exhaust ma...

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Abstract

The invention provides an exhaust system design method applied to high-pulsation-resistance exhaust of a two-cylinder piston engine, reduces the impact load suffered by a pressurizer during working, prolongs the working reliability of the pressurizer, and prolongs the service life. The method designs two aspects of contents: a pneumatic principle and a structure; the design of pneumatic principle aspect aims to reduce the pressure pulsation of air currents in an exhaust system pipe; the main design method determines structural design parameters of the exhaust system through the pressure wave analysis of the exhaust pipe, and corrects the same; and meanwhile, a high-pulsation-resistance bearing is adopted to reduce vibration under high-temperature and high-speed airflow impact of a turbocharger.

Description

technical field [0001] The invention relates to the field of exhaust system design of a two-cylinder piston engine, in particular to an exhaust system design method applied to a two-cylinder piston engine for anti-high pulsation exhaust and the obtained exhaust system. Background technique [0002] The exhaust gas turbocharger can improve the power per liter and fuel economy of the piston engine, and can also improve the emission problem of the engine, so the exhaust gas turbocharger is widely used in the piston engine. Since the cylinders of the two-cylinder engine are intermittently exhausted during work, this will stimulate the gas pressure and velocity in the exhaust system to be periodically pulsated. When the large-scale pulsating airflow acts on the blades of the turbine in the exhaust gas turbocharger, the impact of high-temperature, high-speed, and high-pulsation airflow is very detrimental to the strength and life of the turbine. In addition, in order to make the ...

Claims

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Application Information

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IPC IPC(8): F01N13/08
CPCF01N13/08F01N2260/16
Inventor 周煜丁水汀吴江闵敏李果
Owner 北京领动国创科技有限公司
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