Hydrogen/ammonia dual-fuel engine and control method

Abstract

The invention discloses a hydrogen / ammonia dual-fuel engine and a control method. The invention relates to an ammonia-hydrogen engine and a control method thereof, in particular to an engine capable of adjusting the mixing ratio of hydrogen and ammonia according to the working condition of the engine and a control method, and aims at achieving high-efficiency and high-power output and controlling knocking. The engine mainly comprises a gas inlet system, a hydrogen supply system, an ammonia supply system and a control system. An ECU judges the position and the rotating speed of a crankshaft through a crankshaft position sensor and a rotating speed sensor, judges the occurrence of knocking according to a knocking sensor, and adjusts the injection time and the injection pulse width of a hydrogen pressure reducing valve and a hydrogen injector of the hydrogen supply system according to requirements; and meanwhile, the injection time and the injection pulse width of an ammonia pressure reducing valve and an ammonia injector of the ammonia supply system are adjusted, so that the ammonia-hydrogen mixing ratio is determined. The engine and the control method can eliminate the knocking phenomenon of the hydrogen engine and improve the working range of the hydrogen engine.

Description

technical field [0001] An ammonia-doped hydrogen engine and a control method thereof, in particular to a hydrogen / ammonia dual-fuel piston engine and a control method thereof, belonging to the field of internal combustion engines. Background technique [0002] With the continuous development of economy and society, environmental problems have become increasingly prominent. The development of clean energy technologies is critical to achieving a sustainable society. my country is short of oil, but the number of automobiles is increasing rapidly, and the demand for energy continues to grow. This has led to a continuous increase in my country's dependence on foreign oil and has caused concerns about energy security. [0003] Hydrogen is a renewable fuel that only emits water and nitrogen oxides after combustion in the engine, so it has attracted more and more attention from society. Studies have found that pure hydrogen engines can achieve high efficiency under lean-burn condi...

AI Technical Summary

Problems solved by technology

Studies have found that pure hydrogen engines can achieve high efficiency under lean-burn conditions, but the use of lean-burn results in a rapid decline in output power. Studies have shown that compared with gasoline engines, the peak power drops by 50%

In order to achieve higher power output, it is necessary to increase fuel supply, but when more fuel is input, hydrogen engines are prone to abnormal combustion phenomena such as early ignition, backfiring, and knocking, which limits the application and promotion of hydrogen engines

Images