公开(公告)号：US5975046A

公开(公告)日：1999-11-02

申请号：US956108

申请日：1997-10-24

申请人： Katsunori Kaneko ,  Kazunari Kuwabara ,  Hiromitsu Ando ,  Toshio Shudo

发明人： Katsunori Kaneko ,  Kazunari Kuwabara ,  Hiromitsu Ando ,  Toshio Shudo

IPC分类号： F01N3/20 ,  F01N3/24 ,  F01N3/36 ,  F01N13/02 ,  F02B17/00 ,  F02B23/10 ,  F02B75/12 ,  F02D37/02 ,  F02D41/02 ,  F02D41/06 ,  F02D41/14 ,  F02D41/30 ,  F02D41/34 ,  F02D41/40 ,  F02D43/00 ,  F02D45/00 ,  F02P5/15 ,  F02P5/153

CPC分类号： F02P5/153 ,  F01N13/0097 ,  F02B17/005 ,  F02D37/02 ,  F02D41/024 ,  F02D41/025 ,  F02D41/1446 ,  F02D41/405 ,  F02P5/1506 ,  F01N2570/14 ,  F01N3/2006 ,  F02B2023/107 ,  F02B2075/125 ,  F02B2275/18 ,  F02B23/104 ,  F02D2041/389 ,  F02D2200/0802 ,  F02D41/3029 ,  F02D41/402 ,  Y02T10/123 ,  Y02T10/26 ,  Y02T10/44 ,  Y02T10/46

摘要： An exhaust-gas temperature raising system for a spark-ignition, in-cylinder injection type internal combustion engine includes an electronic control unit. In case that the engine is in an operating condition where the exhaust-gas temperature is required to rise, on an occasion of a main-fuel injection in a compression stroke, the electronic control unit controls engine control parameters such as ignition timing and air-fuel ratio to cause a cool-flame-reaction product, which remains in a combustion chamber in a middle stage or a subsequent stage of an expansion stroke, to have a concentration close to an inflammable concentration limit, and then causes an additional fuel to be injected into the combustion chamber from the fuel injection valve in the middle stage or the subsequent stage of the expansion stroke. The cool-flame reaction of the additional fuel quickly occurs, and the concentration of the cool-flame-reaction product exceeds the inflammable concentration limit, so that the additional fuel is enflamed by self-inflammation. The energy produced by the combustion of the additional fuel is effectively utilized for raising in the exhaust-gas temperature.

摘要翻译： 用于火花点火式缸内喷射型内燃机的废气升温系统包括电子控制单元。 在发动机处于需要排气温度的运行状态的情况下，在压缩冲程中的主燃料喷射的情况下，电子控制单元控制发动机控制参数，例如点火正时和空气 - 燃料比使得残留在中间阶段或后续的膨胀冲程阶段的燃烧室中的冷焰反应产物具有接近易燃浓度极限的浓度，然后使另外的燃料成为 在中间阶段或后续阶段的膨胀冲程中，从燃料喷射阀注入燃烧室。 快速发生附加燃料的冷焰反应，并且冷焰反应产物的浓度超过可燃浓度极限，使得额外的燃料通过自身发炎而燃烧。 通过附加燃料的燃烧产生的能量有效地用于提高废气温度。