Inlet air intercooling device used for diesel engine and based on lower-pressure water evaporation heat absorption

Abstract

The invention aims to provide an inlet air intercooling device used for a diesel engine and based on lower-pressure water evaporation heat absorption. The device comprises a low-pressure water storage tank, an open type water storage tank, pumps and a controller, wherein the low-pressure water storage tank is mounted above a cooler and communicated with a cooling casing pipe; a pressure sensor is mounted on the inner wall of the upper end of the low-pressure water storage tank; the open type water storage tank and the low-pressure water storage tank are communicated through a return pipe; an electromagnetic valve is arranged on the return pipe; the pumps are connected with the low-pressure water storage tank through an extraction steam pipe and connected with the open type water storage tank through a water outlet pipe; the controller is connected with the pressure sensor and the pumps respectively and collects signals of the pressure sensor so as to control switching on and off of the pumps; and an electronic liquid level meter is arranged in the low-pressure water storage tank and connected with the electromagnet valve. With the adoption of the invention, the inlet air temperature of a high-pressure air compressor can be greatly reduced, the pressurization efficiency is improved, the thermal load of the air compressor is effectively reduced, the inlet air density is increased, so that the power of the diesel engine is improved, and the fuel consumption rate is reduced.

Description

technical field [0001] The invention relates to a cooling device, in particular to a diesel engine air intake cooling device. Background technique [0002] With the development of diesel engine technology, people have put forward higher and higher requirements for the power density of diesel engines, so supercharging technology has appeared, especially the emergence of high supercharging and super supercharging represented by two-stage supercharging. A large increase in power density has become a reality. Now it can be said that "inorganic non-supercharging", but what we hope to achieve is isothermal supercharging, but the compressor performs adiabatic compression, which will inevitably cause the air temperature after supercharging to rise sharply. . After the diesel engine is supercharged, the intake air temperature increases, which reduces the intake air density, resulting in an unsatisfactory intake air volume actually entering the cylinder, which limits the degree of in...

AI Technical Summary

Problems solved by technology

However, water at normal pressure is commonly used for cooling now, which has a small heat capacity ratio and cannot quickly absorb the heat carried by the intake air of the diesel engine. The cooling effect is poor, and the cooling water consumption is large.

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