Gas machine active substance jet ignition system and control method thereof

CN121719635APending Publication Date: 2026-03-24TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-31
Publication Date
2026-03-24

AI Technical Summary

Technical Problem

In existing technologies, low-carbon fuel engines such as natural gas and ammonia suffer from problems such as difficulty in ignition, slow combustion speed and unstable combustion during lean combustion. Traditional spark plug ignition methods are difficult to meet the requirements of stable and efficient combustion. Furthermore, existing pre-combustion chamber technologies require additional hydrogen tanks or complex pressurization systems, resulting in complex systems and high costs.

Method used

It adopts a dedicated reforming cylinder in a multi-cylinder engine to convert natural gas and ammonia into highly active hydrogen-rich substances online. Through a high-energy ignition system, it achieves spatially distributed ignition and strong turbulent combustion in the main combustion chamber, eliminating the need for additional hydrogen storage tanks and pressurization equipment.

Benefits of technology

It improves ignition capability, achieves efficient combustion and energy utilization, enhances combustion stability, and reduces system complexity and cost.

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Abstract

The invention discloses an active substance jet ignition system of a gas machine. The active substance jet ignition system mainly comprises a multi-cylinder engine, a liquid ammonia tank, a reforming cylinder, a high-pressure gas storage tank, a jet combustion chamber, a high-pressure ejector, a high-energy ignition system, an ECU, various control valves and the like. A certain cylinder of the multi-cylinder engine is set as a reforming cylinder, fuel such as natural gas and ammonia gas is subjected to incomplete combustion reaction by the cylinder in a specific thermal atmosphere, and is converted into high-activity hydrogen-rich active substances on line, and then the active substances are used for other combustion cylinders to perform active pre-combustion chamber jet ignition and combustion. A high-energy ignition system is arranged in the jet flow combustion chamber and matched with different active substance organizations to form high-temperature thermal jet flow, spatial distributed ignition and strong turbulent flow combustion are achieved in the main combustion chamber, and the problems that combustion of a gas engine is unstable, detonation abnormal combustion is achieved, and lean combustion of natural gas, ammonia gas and other fuel engines is difficult to ignite and slow in combustion are effectively solved. The system can be realized without adding double fuels, and meanwhile, additional complicated supercharging equipment is not needed.
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