Gas inlet channel humidifying device for supercharged diesel engine

Abstract

The invention aims to provide a gas inlet channel humidifying device for a supercharged diesel engine. The gas inlet channel humidifying device comprises a control water tank, a steam generator, a first turbine supercharger and a second turbine supercharger, wherein the steam generator is internally provided with a heating pipeline; waste gas enters a heating pipeline of the steam generator after passing through a first turbine; the heating pipeline is connected with a second turbine and the atmosphere respectively through a three-way solenoid valve; the second turbine is communicated with the atmosphere; the control water tank is connected with the steam generator and injects water into the steam generator; a venturi pipe is mounted on a gas inlet pipe between the first gas compressor and a diesel engine air cylinder; the water in the steam generator is heated by the waste gas in the heating pipeline to generate steam; the steam enters the venturi pipe after passing through a second gas compressor and then is sprayed into the gas inlet pipe. According to the gas inlet channel humidifying device for the supercharged diesel engine, the supercharged inlet gas and the supercharged water steam of the diesel engine are mixed in the gas inlet pipe so as to realize water doping and combustion; the utilization rate of resources is improved and the emission of NOX of the diesel engine can also be greatly reduced.

Description

technical field [0001] The invention relates to an additional device for a diesel engine, in particular to an additional device for air intake of a diesel engine. Background technique [0002] Diesel engine water mixing technology originally originated in the early 20th century, using water spray in the cylinder to achieve the purpose of cooling. With decades of extensive research, a variety of water-mixed combustion methods have been summed up to improve combustion and reduce NO X , mainly including three methods: water supply to the intake port, diesel oil mixed with water emulsification method, and direct water spraying to the combustion chamber. The three methods have their own advantages and disadvantages. Among them, the water supply of the intake port is mainly through spraying atomized water or water vapor from the intake port, and as the air enters the combustion chamber to participate in the combustion, the heat capacity of the humidified air increases sharply, th...

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Problems solved by technology

[0003] At present, in the existing air inlet water supply methods, most of them use humidifiers to heat water into water vapor, and there have been no related patents based on the utilization of exhaust gas waste heat to realize water vapor injection and water vapor pressurization in the air inlet, and it is necessary to further this research

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