Hydrogen internal combustion engine capable of spraying water in water circulation cylinder and automobile

Abstract

The invention relates to a water circulation in-cylinder water spraying hydrogen internal combustion engine which comprises a hydrogen supply assembly, an air inlet assembly, an air cylinder, an air inlet channel, an exhaust manifold, an exhaust pipe, a condenser, a water spraying mechanism and a water circulation assembly. The output end of the hydrogen supply assembly communicates with the air inlet channel. The output end of the air inlet assembly communicates with the air inlet channel. An inlet of the air cylinder communicates with the air inlet channel, an outlet of the air cylinder communicates with an inlet of the exhaust manifold, an outlet of the exhaust manifold communicates with an inlet of the exhaust pipe, and the condenser is arranged on the exhaust pipe. The water spraying mechanism is used for spraying water into the air cylinder and is arranged in the air cylinder; the water circulation assembly is used for collecting water of gas exhausted by the air cylinder and supplying water to the water spraying mechanism, the water inlet end of the water circulation assembly communicates with the condenser, and the water outlet end of the water circulation assembly communicates with the water inlet end of the water spraying mechanism. Compared with the prior art, the method has the advantages that the dynamic property of the hydrogen internal combustion engine is improved, nitrogen oxide emission is reduced, and the method is environment-friendly, economical and the like.

Description

technical field [0001] The invention relates to the field of hydrogen internal combustion engines, in particular to a hydrogen internal combustion engine and an automobile with water spraying in a water circulation cylinder. Background technique [0002] As a power source for vehicles, hydrogen energy is of great significance to improving the energy supply structure and developing low-carbon transportation. At present, the development of hydrogen energy for vehicles is concentrated on hydrogen fuel cells, but fuel cells are expensive and require high purity of hydrogen. Compared with hydrogen fuel cell technology, hydrogen internal combustion engine is less difficult and cheaper, and can apply hydrogen energy faster and more economically. [0003] Hydrogen has good combustion characteristics as an internal combustion engine fuel. Compared with gasoline, hydrogen has a higher calorific value and lower ignition energy, and because hydrogen has a wide flammable limit, it is be...

AI Technical Summary

Problems solved by technology

However, due to the low charging efficiency of the hydrogen engine and the large gas constant of the mixture, its output torque is greatly reduced compared with the gasoline engine; in addition, due to the presence of nitrogen, the high temperature generated during hydrogen combustion will also cause NO x generation

[0004] In the existing technology, for the hydrogen internal combustion engine, the existing mature post-treatment technology can be used to reduce NO x emissions; can also be controlled by NO x The generation of vehicle exhaust NO x Emissions directly meet the standards. For example, in a zero-nitrogen engine and its control method based on water injection to control the pressure rise rate of oxygen closed-circuit cycle disclosed in Chinese patent CN109707505B, pure oxygen combustion is used. This scheme can achieve zero nitrogen emissions, but the preparation of oxygen The cost is high, which increases the cost on the other hand, which is not conducive to the development of industrialization

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