Internal combustion engine turbocharging system

Abstract

The invention discloses a turbocharging system for an internal combustion engine, comprising the internal combustion engine which is provided with an evaporator capable of generating high-temperature and high-pressure water vapor on an exhaust pipe. The water vapor is guided into the turbine end of a supercharger by a pipeline to drive impellers of the turbo machine to rotate at a high speed and drive a coaxial air compressor to compress the air from an air filter, and the supercharged air is passed through an intake manifold of the internal combustion engine to enter the internal combustion engine. The water vapor discharged by the turbo machine is guided into a condenser that can condense the high-temperature and high-pressure water vapor into the water closed to the boiling point, and then is flowed back to the evaporator to circulate continuously. Because the water vapor is generated to drive the turbo machine and drive the coaxial air compressor to compress the air from the air filter, the exhaust back pressure can not be increased, and power of the internal combustion engine also can not be consumed. And an operating temperature is much lower, and a cooling requirement is lower, thereby compared with the exhaust turbocharging machine, the cost is reduced a lot; and the turbocharging system can be used together with the exhaust turbocharging machine.

Description

technical field [0001] The invention relates to a turbocharging system of an internal combustion engine, in particular to a turbocharging system driven by water vapor generated by the heat of the exhaust gas of the internal combustion engine. Background technique [0002] Automobiles have become a widely used means of transportation. Existing automobiles basically use internal combustion engines as power. At present, countries all over the world have invested a lot of manpower, material and financial resources to study how to reduce emissions and fuel consumption of internal combustion engines. But from the current technical point of view, although the invention of the internal combustion engine has a history of more than 100 years, its fuel utilization rate is still only 40%, and at the same time, about 40% of the fuel energy is discharged from the exhaust pipe in the form of heat. This will not only cause a lot of fuel waste, but also bring a lot of exhaust pollution and i...

AI Technical Summary

Problems solved by technology

Although the supercharger does not increase the exhaust back pressure of the engine, it needs to consume the power of the engine, and the boost pressure is generally low

Exhaust gas turbocharging will greatly increase the exhaust back pressure of the engine, and high-temperature exhaust gas must pass through the supercharger. The components of the turbine need to use high-temperature resistant materials. The design precision of the turbine is high and the process is complicated.

The working conditions of the bearing are harsh, easy to damage, and have high requirements for lubrication and cooling

For the supercharger with variable nozzle section, the variable mechanism also requires high precision and high cost

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