公开(公告)号：US20140360460A1

公开(公告)日：2014-12-11

申请号：US13915481

申请日：2013-06-11

Applicant: CUMMINS INC.

Inventor： Lester L. PETERS ,  David L. BUCHANAN ,  Vesa HOKKANEN

IPC: F02M27/08 ,  F02D41/30

CPC classification number: F02M27/08 ,  F02D41/2096 ,  F02D41/3005 ,  F02D41/38 ,  F02D2041/389 ,  F02M51/0603 ,  F02M69/041 ,  F02M2200/21

Abstract: The present disclosure provides an improved system and method of operating a fuel injector of an engine to provide at least two different types of fuel spray in a combustion chamber of the engine by application of ultrasonic pulses to fuel in the fuel injector during an injection event. A first type of spray includes larger droplets that reduce the effective diffusion combustion area around the droplets and a second type of spray includes relatively small droplets that increase the effective diffusion combustion area around the droplets.

Abstract translation: 本公开提供了一种操作发动机的燃料喷射器的改进的系统和方法，以在喷射事件期间通过在燃料喷射器中的燃料施加超声波脉冲来在发动机的燃烧室中提供至少两种不同类型的燃料喷雾。 第一类型的喷雾包括更大的液滴，其减小了液滴周围的有效扩散燃烧区域，并且第二类型的喷雾包括增加液滴周围的有效扩散燃烧区域的相对小的液滴。

公开(公告)号：US20140361096A1

公开(公告)日：2014-12-11

申请号：US13915305

申请日：2013-06-11

Applicant: CUMMINS INC.

Inventor： Vesa HOKKANEN ,  David L. BUCHANAN ,  Lester L. PETERS ,  Rajesh K. GARG

IPC: F02M41/16

CPC classification number: F02M63/029 ,  F02M45/086 ,  F02M51/0603 ,  F02M2200/46 ,  F02M2200/703

Abstract: The disclosure provides an improved fuel injector and method of operating the fuel injector to provide at least two different types of fuel spray to a combustion chamber of an internal combustion engine. The two types of spray are formed by providing a first fuel pressure to the fuel injector during a first portion of an injection event at a first pressure and providing a second fuel pressure to the fuel injection during a second portion of the injection event, and maintaining a substantially constant fuel flow rate throughout the injection event.

Abstract translation: 本公开提供了一种改进的燃料喷射器和操作燃料喷射器的方法，以向内燃机的燃烧室提供至少两种不同类型的燃料喷雾。 在喷射事件的第一部分在第一压力下向燃料喷射器提供第一燃料压力并在喷射事件的第二部分期间向燃料喷射提供第二燃料压力并且保持 在整个喷射事件期间基本上恒定的燃料流量。