公开(公告)号：US20130319376A1

公开(公告)日：2013-12-05

申请号：US13910247

申请日：2013-06-05

Applicant: ABB Turbo Systems AG

Inventor： Christoph MATHEY ,  Paolo TREMULI

IPC: F02D41/40

CPC classification number: F02D41/402 ,  F02D41/3047 ,  F02D41/3094 ,  Y02T10/128 ,  Y02T10/142 ,  Y02T10/44

Abstract: In a fuel injection system and method for a diesel engine with compression induced ignition, NOx emissions are reduced by providing a supplemental fuel injection from a supplemental injection nozzle, in addition to the primary fuel injection through a primary injection nozzle. The supplemental injection nozzle injects a supplemental quantity of fuel onto a vaporization surface such as an exhaust valve, a flame ring area, or a top surface of the piston, in the combustion chamber, whereupon the supplemental fuel vaporizes and forms a lean air/fuel mixture. Thereafter, the primary injection nozzle injects the main fuel charge into the combustion chamber, to produce a rich air/fuel combustion mixture, which is then ignited and combusts.

Abstract translation: 在具有压缩诱发点火的柴油发动机的燃料喷射系统和方法中，除了通过主喷射喷嘴的主要燃料喷射之外，通过从辅助喷射喷嘴提供辅助燃料喷射来减少NOx排放。 补充注射喷嘴在燃烧室中将补充的燃料喷射到诸如排气阀，火焰环区域或活塞顶表面的汽化表面上，由此补充燃料蒸发并形成稀薄空气/燃料 混合物。 此后，主喷射喷嘴将主燃料喷射器喷射到燃烧室中，以产生浓空气/燃料燃烧混合物，然后被点燃并燃烧。