Spark plug, engine, spark plug ignition method and engine ignition method

Abstract

The invention relates to the technical field of engine ignition, and discloses a spark plug, an engine, a spark plug ignition method and an engine ignition method. The spark plug includes a shell, a discharge electrode and grounding electrodes; a pre-combustion chamber having an opening is formed in the shell; the grounding electrodes are arranged in the pre-combustion chamber; and the discharge electrode stretches into the pre-combustion chamber and forms ignition gaps with the grounding electrodes. After the spark plug is installed on a cylinder cap of the engine, the pre-combustion chambercan communicate with the combustion chamber of the engine, thus, part of a fuel and air mixture can enter the pre-combustion chamber through the opening after the mixture enters the combustion chamber; and as the capacity in the pre-combustion chamber is small, the fuel can be ignited through electric sparks formed through the discharging between the discharge electrode and the grounding electrodes, high-temperature and high-pressure combustion gas formed in the pre-combustion chamber can enter the combustion chamber through the opening in a jet flow manner, and the fuel in the combustion chamber can be ignited, so that stable and efficient ignition and combustion can be realized.

Description

technical field [0001] The invention relates to the technical field of engine ignition, in particular to a spark plug, an engine, a spark plug ignition method and an engine ignition method. Background technique [0002] Currently, spark ignition engines are capable of extending into the combustion chamber of the engine via a spark plug to provide an electrical discharge to ignite the fuel-air mixture within the combustion chamber. The performance of the spark plug directly affects the performance of the engine. [0003] Ammonia can be used as a fuel for spark ignition internal combustion engines. Ammonia combustion does not produce CO2, reducing the impact of greenhouse gases on the environment. Ammonia can be synthesized by renewable energy, reducing human dependence on non-renewable fossil energy. On the other hand, today's engines fueled by gases (such as natural gas, biogas, syngas, etc.) are usually supplied with a lean fuel mixture, that is, a mixture of air and fue...

AI Technical Summary

Problems solved by technology

[0004] However, the ignition performance of ammonia gas is poor and the flame propagation speed is very low. The traditional spark plug cannot effectively solve the problem that ammonia gas is not easy to ignite and burn in the cylinder internal combustion engine.

In addition, lean fuel mixture often leads to poor ignition, knocking and incomplete combustion, similarly, conventional spark plugs cannot effectively ignite lean fuel mixture in the combustion chamber and the life of spark plugs is also very short

Images