Pre-combustion chamber utilizing low-concentration gas

Abstract

The invention provides a pre-combustion chamber utilizing low-concentration gas. The pre-combustion chamber comprises a pre-combustion chamber combustion chamber and a spark plug, and further comprises a gas inlet channel and a one-way control valve, the gas inlet channel communicates with the pre-combustion chamber combustion chamber through the one-way control valve, and the spark plug is used for igniting gas inside the pre-combustion chamber combustion chamber. By adopting the solution, another path of dry and clean natural gas is introduced into the combustion chamber of the pre-combustion chamber, the ignition environment of the ignition spark plug is greatly improved, and the ignition reliability is greatly improved, mixed gas with the theoretical air-fuel ratio can be formed in the pre-combustion chamber, ignition is easy, flames sprayed out of a nozzle of the pre-combustion chamber are equivalent to the improvement of ignition energy, lean combustion in a cylinder can be achieved, the combustion heat efficiency is greatly improved, fuel economy is better, the combustion temperature is lower, and nitrogen oxide emission is lower. By means of the pre-combustion chamber, the lean combustion can be achieved, and the utilization concentration of 8.5% of the gas is further reduced to 5.5%.

Description

technical field [0001] The invention relates to the technical field of engine combustion, in particular to a pre-combustion chamber using low-concentration gas. Background technique [0002] Gas is an important source of serious natural disasters in coal mines. The existence of gas makes people suffocate, and it will explode when encountering a fire source. Gas explosion can also easily cause coal dust explosion. More than 70% of major coal mine disaster accidents in our country are gas accidents. Gas is not only harmful gas, but also clean energy. Through gas drainage and comprehensive utilization, gas can be turned from harm to benefit and waste into wealth. At present, foreign generator sets have strict restrictions on the use of gas, usually only suitable for high-concentration gas of more than 25%, and some manufacturers are suitable for gas of more than 15%. The utilization of gas in gas engines has laid a foundation, and the concentration of gas utilization has rea...

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Problems solved by technology

[0003] In the prior art, many engines that can utilize low-concentration gas have been developed, but the minimum concentration limit of the developed engines such as spark plug points or gas engines for low-concentration gas is about 8.5%, and for low-concentration gas below the concentration limit 8.5% Concentrated gas will be burned to generate electricity or evacuated when it cannot be used, the utilization efficiency is low, and it will cause environmental pollution

[0004] The main problem of lower concentration gas utilization is the difficulty of ignition. It is difficult to ignite the mixed gas with a concentration below 8.5% with a common spark plug, and the low concentration gas also contains a large amount of water during the transportation process, which makes ignition even more difficult.

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