Flow guide sleeve type spiral mixed gas inlet device

Abstract

The invention relates to a flow guide sleeve type spiral mixed gas inlet device for a gas inlet channel jetting type gas fuel engine. The device comprises a flow guide sleeve 1 and flanges 2 arranged at two ends of the flow guide sleeve, wherein the flow guide sleeve 1 comprises an outer layer sleeve 1a, an inner layer sleeve 1b and a rib plate 3 connected between the outer layer sleeve 1a and the inner layer sleeve 1b; a jetting guide pipe 4 is arranged on the outer layer sleeve 1a; a gas fuel introduces fuel gas into an interlayer space between the inner layer sleeve 1b and the outer layer sleeve 1a through the jetting guide pipe so as to move around the outer wall of the inner layer sleeve in a spiral forwarding manner; and the fuel gas is fully mixed with air at a gas inlet channel on a cylinder cover. Due to the flow guide function of the device, the residual mixed gas amount in the gas inlet pipe is reduced; furthermore, the fuel gas and the air can be mixed at a place close to the gas inlet channel on the cylinder cover; and a tempering phenomenon is avoided effectively.

Description

Technical field [0001] The guide sleeve type spiral hybrid air intake device proposed by the present invention is suitable for port injection type gas fuel engines. Background technique [0002] As the world's petroleum resources are declining and environmental pollution is becoming increasingly severe, all countries are committed to the development and research of alternative fuels and new energy sources to reduce their excessive dependence on petroleum resources. Alternative fuels such as natural gas and hydrogen have received extensive attention due to their unique advantages. The application of gaseous fuel in the engine mainly adopts two methods, in-cylinder direct injection and port injection. Port injection is less difficult and has little modification to traditional internal combustion engines, and is widely recognized. However, port injection gas fuel engines also have some problems during use: during the intake stroke of the internal combustion engine, the intake air f...

AI Technical Summary

Problems solved by technology

The difficulty of port injection is relatively low, and there are few changes to the traditional internal combustion engine, which is widely recognized. However, there are also some problems in the use of port injection gas fuel engines: during the intake stroke of the internal combustion engine, the intake flow of the engine There will be a certain degree of decline due to the injection of gas fuel, especially for a hydrogen internal combustion engine with a large volume of circulating injection gas, injecting a large volume of hydrogen into the intake port will seriously weaken the intake air of the engine; The residual amount of mixed gas in the manifold is relatively high, which will cause abnormal combustion such as flashback

Images