Silencer for turbo supercharger and air supplementing method of turbo supercharger

Abstract

The invention belongs to the technical field of turbo superchargers, and particularly relates to a silencer for a turbo supercharger and an air supplementing method of the turbo supercharger. The silencer comprises a one-way valve and a silencer body with an air supplementing air inlet way. The air supplementing air inlet way is provided with a spiral air way and an air accumulating ring groove. The one-way valve communicates with the air supplementing air inlet way. The air supplementing air inlet way is provided with a corresponding air supplementing inlet. Compressed air enters the air supplementing air inlet way through the silencer air supplementing inlet, the compressed air is accelerated, rotated and gathered to the air accumulating ring groove through a spiral air flue, and the high-pressure supplemented air enters the supercharger from the impeller edge through the air accumulating ring groove via the action of counter collisions and the negative pressure of an impeller inlet.The low-speed air inlet volume and pressure ratio of the supercharger can be improved, the supercharger constantly works in the efficient area, and the low-speed performance of an engine is improved;and due to the gradually-reduced spiral air flue area, the air supplementing pressure is increased; and through the special design of the air accumulating groove, the pressure losses are reduced, theair conduction effect is good, and axial impacts on a supercharger rotor are avoided.

Description

technical field [0001] The invention belongs to the technical field of turbochargers, and in particular relates to a muffler for a turbocharger and an air supply method thereof. Background technique [0002] With the development of low-speed and high-torque marine diesel engines and the implementation of high-emission regulations for marine diesel engines, high requirements are placed on the low-speed performance of diesel engines, and higher requirements are placed on turbocharged low-speed performance. The design of low-speed high-pressure ratio It has become the development direction of marine turbocharger technology to improve the low-speed performance of marine diesel engines with high-flow superchargers; the test of marine superchargers is generally matched according to the characteristics of the engine propeller, which leads to the key inspection criteria when matching the turbocharger with the engine. Fixed-point performance, it is difficult to take into account the ...

AI Technical Summary

Problems solved by technology

[0002] With the development of low-speed and high-torque marine diesel engines and the implementation of high-emission regulations for marine diesel engines, high requirements are placed on the low-speed performance of diesel engines, and higher requirements are placed on turbocharged low-speed performance. The design of low-speed high-pressure ratio It has become the development direction of marine turbocharger technology to improve the low-speed performance of marine diesel engines with high-flow superchargers; the test of marine superchargers is generally matched according to the characteristics of the engine propeller, which leads to the key inspection criteria when matching the turbocharger with the engine. Fixed-point performance, it is difficult to take into account the performance of low working conditions

When the supercharger is matched with the engine to meet the performance of the calibrated working conditions, the indicators such as low-speed fuel consumption and smoke will deteriorate; at the same time, due to the harsh working conditions of the marine supercharger, the surface of the compressor impeller is covered with dirt, which affects the supercharging device performance, while cleaning is very inconvenient

Images