Combustion system and method for self adaption controllable heat premixing direct jet type diesel engine

Abstract

The invention discloses a kind of self-adaptnig, heat-controllable, pre-mixing and direct-spraying diesel engine burning system and its method, which belongs to the field of internal-combustion engine. The stated burning system incldues multi-hole glib talker, multi connection space burning room and inelt track. The stated multi connection space burning room consists of two or more linking space structure, it can control the transmitting way for pre-mixing burning, and when cooperatnig with the fuel spraying and timing oil support, it can effectively control the space-time distribution of combination gas and fire-starting point and burn rate under different operating modes, thus make the burning system be self-adapting and controllable. The burning room can form multi circulations to promote the forming of the homogeneous combination gas. The vortex ratio O of the stated system is 0-2, glib aperture is 50-180 mum, the oil spraying pressure is higher than 800 bar, it can reduce flame temperature notably, carbon smoke, NOX and HC, improve the combustion efficiency.

Description

technical field [0001] The invention belongs to the field of internal combustion engines, and more specifically, the invention relates to a direct-injection diesel engine combustion system and a combustion method. Background technique [0002] The combustion process of the traditional direct injection diesel engine includes both premixed combustion and diffusion combustion, and the diffusion combustion is the main one. In the past hundred years, people have successfully developed different diesel engine combustion systems. By their nature, most systems are diffusion combustion. Due to the extremely uneven formation of the diffusion combustion mixture, there is an insurmountable contradiction between smoke exhaust and NOX. In recent years, with the development of technologies such as electronic control and high-pressure injection, the combustion and emission of diesel engines have been greatly improved, but the essential problem of diffusion combustion still needs to be sol...

AI Technical Summary

Problems solved by technology

In an open combustion chamber, if fuel is injected too early, the formed mixture may be combustible at the same time, and it is difficult to control the combustion rate; if fuel is injected too late, it is difficult to completely form premixed gas before ignition, and diffusion combustion is difficult to avoid

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