Collision shunt combustion chamber of diesel engine

Abstract

The invention discloses a collision shunt combustion chamber of a diesel engine, and belongs to the field of formation and combustion of gas mixtures of an engine. The combustion chamber is provided with a collision belt which divides the combustion chamber into an inner part and an outer part. A combustion chamber bottom clearance part is arranged outside the collision belt, and a combustion chamber center part is arranged inside the collision belt. Atomized fuel spray sprayed by a fuel sprayer is sprayed to the collision belt, part of the fuel spray is rebounded for secondary atomization, part of the fuel spray flows to the combustion chamber bottom clearance part and the combustion chamber center part along the atomization collision belt, and fuel and air can be better mixed. By the adoption of the combustion chamber, the mixing rate and space regions of fuel and air are greatly increased, thin diffusive combustion is formed in the combustion chamber, emission of carbon smoke and emission of NOx are reduced at the same time, combustion of the diesel engine is effectively improved, and economical efficiency is improved. Under the declared working condition, compared with an original machine system, the collision shunt combustion chamber has the advantages that economical efficiency is improved by 4%, emission of carbon is reduced by 50%, and emission of NOx is reduced by 8%.

Description

technical field [0001] The invention relates to a diesel engine collision split combustion chamber, which belongs to the field of engine mixture gas formation and combustion. Background technique [0002] At present, in diesel engines, the injected fuel hits the wall of the combustion chamber pit to varying degrees. After the fuel hits the wall, a thicker and relatively stable mixed gas layer will be formed on the wall. This thick mixed gas layer is harmful to the carbon in the diesel engine Smoke formation and HC emissions have a significant impact. This phenomenon will become more serious with the increase of diesel fuel injection pressure and the miniaturization of cylinder bore. In addition, the porous spray is unevenly distributed in the circumferential direction, and the spray accumulates or produces an oil film at the point of impact. Insufficient use of the headspace space and unsatisfactory distribution of the mixed gas space result in low air utilization and inco...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of mixture accumulation at the landing point of the porous spray and the low utilization rate of the headspace space of the combustion chamber

The invention provides a diesel engine collision split flow combustion chamber

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