Cylinder interior and exterior cold water mixing double spraying natural gas engine structure

Abstract

The invention relates to a cylinder interior and exterior cold water mixing double spraying natural gas engine structure. The cylinder interior and exterior cold water mixing double spraying natural gas engine structure comprises a natural gas engine body, an inlet manifold, an exhaust manifold, a natural gas injector, a sparking plug, a cylinder interior water spraying device, a high-pressure water pump unit, a cylinder exterior water spraying device, a low-pressure water pump unit and an electronic controller, wherein the sparking plug and the cylinder interior water spraying device are arranged in the natural gas engine body; the high-pressure water pump unit is connected to the cylinder interior water spraying device; the cylinder exterior water spraying device is arranged in the inletmanifold; the low-pressure water pump unit is connected to the cylinder exterior water spraying device; and the electronic controller is electrically connected to the natural gas injector, the sparking plug, the cylinder interior water spraying device, the high-pressure water pump unit, the cylinder exterior water spraying device and the low-pressure water pump unit. Compared with the prior art,the cylinder interior and exterior cold water mixing double spraying natural gas engine structure has the beneficial effects that the purposes of improving a power performance, economical efficiency and an emission performance can be achieved simultaneously by arranging the two water spraying devices in a cylinder and on the inlet manifold; the heat efficiency and power per liter of a natural gasengine can be improved; the emission of nitrogen oxide is reduced; and the engine knocking can be effectively inhibited.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, and relates to a natural gas engine structure with mixed double injection of cold water inside and outside the cylinder. Background technique [0002] Natural gas is the clean energy with the largest reserves in the world. It has the advantages of abundant resources, low emission pollution and low price. It is considered to be a very promising fuel. Many people think that it is the third largest energy source in the world after coal and oil. . In recent years, with the development and maturity of hydraulic fracturing technology and horizontal drilling technology, recoverable natural gas reserves have grown rapidly, which will have an important impact on my country's energy development pattern. CO generated from the combustion of natural gas 2 And PM is very little, so it is also called "clean fuel". [0003] For spark-ignited natural gas engines, the mixture in the traditio...

AI Technical Summary

Problems solved by technology

However, there are technical bottlenecks in existing natural gas engines, which are prone to knocking and a certain amount of nitrogen oxides, which limits the further improvement of internal combustion engine thermal efficiency and power per liter

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