Large-bore single-cylinder gas internal combustion engine and multi-cylinder gas internal combustion engine

Abstract

The invention provides a large-cylinder-diameter single-cylinder gas internal combustion engine and a multi-cylinder gas internal combustion engine. The large-cylinder-diameter single-cylinder gas internal combustion engine comprises a cylinder and a cylinder cover and is characterized by further comprising a water-cooling pre-combustion device, a water-circulation pipeline, a circulation water pump and a gas inlet control device, wherein the water-cooling pre-combustion device is arranged on the cylinder, and is used for igniting introduced pre-combustion gas, so that a flame is ejected for igniting cylinder gas in a combustion chamber of the cylinder; the water-circulation pipeline is provided with a water inlet end and a water outlet end and is used for conveying cooling water, and the water inlet end and the water outlet end separately communicate with the water-cooling pre-combustion device; the circulation water pump is arranged on the water-circulation pipeline and is used for pumping cooling water; and the gas inlet control device is provided with a gas inlet, a first outlet which communicates with the water-cooling pre-combustion device and a second outlet which communicates with the combustion chamber, and is used for controlling the inlet amount of the pre-combustion gas and the cylinder gas. By adopting the large-cylinder-diameter single-cylinder gas internal combustion engine and the multi-cylinder gas internal combustion engine, a pre-combustion chamber shell and a flame nozzle are cooled and radiated; and recycle utilization of the cooling water can be realized without additional equipment; and investment is reduced.

Description

technical field [0001] The invention relates to an internal combustion engine, in particular to a large-bore single-cylinder gas internal-combustion engine and a multi-cylinder gas internal-combustion engine including the large-bore single-cylinder gas internal-combustion engine. Background technique [0002] Large-displacement gas-fired internal combustion engines generally adopt pre-chamber ignition technology. After a small amount of fuel gas is delivered to the pre-chamber, the spark plug in the pre-chamber housing generates electric sparks to ignite the mixture of fuel gas and air to generate flames and spray them out through the nozzle. The ejected flame ignites a large amount of fuel gas mixture in the combustion chamber, and then burns to do work. [0003] In the prior art, the cylinder head of the internal combustion engine is closely attached to the pre-chamber housing to form a structure with a large overall thickness. After working for a long time, the temperatu...

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Problems solved by technology

[0004] The high temperature of the pre-chamber housing can cause many problems. On the one hand, too high a temperature may reach the ignition point of the fuel gas mixture, which will cause the fuel gas mixture to burn immediately when it comes into contact with the housing, without being ignited by the spark plug That is to say, the high-temperature pre-combustion chamber will keep burning inside the gas internal combustion engine, and it cannot be ignited by the spark plug to normally control and burn to do work, that is, it cannot work normally.

On the other hand, if the temperature is too high, the nozzle of the pre-combustion chamber will be melted and damaged due to overheating, or the direction of the nozzle hole will be shifted, which will cause the internal combustion engine to fail to work normally.

[0005] In addition, the high temperature of the spark plug will also make the ignition unsafe. If it is mild, it will cause a fire phenomenon. If it is more serious, it may burst due to thermal deformation, and the service life of the spark plug will be greatly shortened.

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