公开(公告)号：US08838316B2

公开(公告)日：2014-09-16

申请号：US13647471

申请日：2012-10-09

Applicant: GM Global Technology Operations LLC

Inventor： Christopher E. Whitney ,  Jeffrey M. Hutmacher ,  J Michael Ellenberger ,  James B. Nicholson ,  Rafat F Hattar

IPC: B60W20/00 ,  B60W10/06 ,  B60W10/08

CPC classification number: B60W10/06 ,  B60W10/08 ,  B60W20/16 ,  B60W2710/0644 ,  B60W2710/0666 ,  B60W2710/0683 ,  B60W2710/0694 ,  B60Y2300/474 ,  F02D37/02 ,  F02D41/0205 ,  F02D41/0255 ,  F02D41/064 ,  F02D2200/0406 ,  F02P5/1506 ,  Y02T10/26 ,  Y02T10/46 ,  Y02T10/54 ,  Y02T10/6286

Abstract: A method of warming a catalyst of an exhaust gas treatment system of a hybrid vehicle includes transitioning a rotational speed of an engine to within a pre-defined speed range with an electric motor, and reducing an engine manifold pressure to within a pre-defined pressure range. The engine is fueled after the rotational speed of the engine is within the pre-defined speed range, and the engine manifold pressure is within the pre-defined pressure range. While the engine is being fueled, the engine manifold pressure is increased to within a catalyst light-off pressure range, and the torque output of the engine is increased to within a catalyst light-off operating torque range. The exhaust gas produced from the operation of the engine within the pre-defined speed range, within the catalyst light-off pressure range, and within the catalyst light-off operating torque range heats the catalyst while minimizing emissions.

Abstract translation: 一种对混合动力车辆的废气处理系统的催化剂进行加温的方法包括使用电动机将发动机的转速转换到预定的速度范围内，并且将发动机歧管压力降低到预定压力内 范围。 发动机在发动机的转速处于预定的速度范围内并且发动机歧管压力在预定的压力范围内的情况下燃油。 当发动机正在燃料时，发动机歧管压力增加到催化剂熄灭压力范围内，并且发动机的扭矩输出增加到催化剂熄灭操作转矩范围内。 在预定速度范围内，在催化剂熄灭压力范围内，并且在催化剂熄灭操作转矩范围内，由发动机运转产生的废气加热催化剂同时最小化排放。