Gaseous ammonia fuel supply system with stable injection pressure

Abstract

The invention discloses a gaseous ammonia fuel supply system with stable injection pressure, and belongs to the technical field of novel ammonia fuel engines. The problem that when existing ammonia fuel enters an engine in a gaseous state, the injection pressure is not stable in a highly vaporized state is solved. A switch valve and a first pressure reducing valve are sequentially arranged on a connecting pipeline between an ammonia gas bottle and a heating vaporization cavity, an electromagnetic valve is arranged on a connecting pipeline between the heating vaporization cavity and a pressure surge cavity, a second pressure reducing valve is arranged on a connecting pipeline between the pressure surge cavity and an ammonia gas rail, a heating resistor is arranged outside the heating vaporization cavity, a first pressure sensor is arranged in the pressure surge cavity, and the electromagnetic valve, the first pressure sensor and an ammonia gas injection valve are electrically connected with an ECU controller. By automatically controlling the pressure of highly vaporized ammonia gas, the stable, controllable and adjustable injection pressure in the supply of gaseous ammonia fuel can be realized, and the phenomenon that the injection pressure is unstable and difficult to control in ammonia gas supply is effectively solved.

Description

technical field [0001] The invention relates to a gaseous ammonia fuel supply system with stable injection pressure, belonging to the technical field of novel ammonia fuel engines. Background technique [0002] With the reduction of fossil energy reserves, the increasing severity of the greenhouse effect, and stricter emission regulations, people are paying more and more attention to clean, carbon-free and sustainable alternative energy sources. The global energy structure is moving towards a cleaner and more low-carbon one. Fuel transition. As a good carrier of hydrogen, ammonia fuel has attracted more and more attention. Its complete combustion does not produce greenhouse gas carbon dioxide and particulate matter, and has a high hydrogen content. It is a promising green energy carrier. Its energy density is equivalent to that of methanol and dimethyl ether, and its volumetric energy density is 33% higher than that of liquefied hydrogen. At present, ammonia is widely used...

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the problem of unstable injection pressure in the highly vaporized state when the ammonia fuel enters the engine in a gaseous state in the prior art, and further provides a gaseous ammonia fuel supply system with stable injection pressure

Images