公开(公告)号：US20160303509A1

公开(公告)日：2016-10-20

申请号：US15098454

申请日：2016-04-14

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kazuhiro ITOH ,  Hiromasa NISHIOKA ,  Yoshihisa TSUKAMOTO ,  Hiroshi OHTSUKI ,  Yasumasa NOTAKE

IPC: B01D53/94 ,  F01N11/00 ,  F01N3/20

CPC classification number: B01D53/9418 ,  B01D53/9431 ,  B01D53/9495 ,  B01D2251/2062 ,  B01D2251/2067 ,  B01D2255/9022 ,  B01D2257/404 ,  B01J23/002 ,  B01J23/34 ,  B01J29/072 ,  B01J37/0244 ,  B01J37/0246 ,  B01J2229/186 ,  F01N3/208 ,  F01N11/002 ,  F01N2370/02 ,  F01N2550/02 ,  F01N2610/02 ,  F01N2610/1453 ,  F01N2610/146 ,  F01N2900/1402 ,  F01N2900/1404 ,  F01N2900/1602 ,  Y02T10/24

Abstract: An apparatus may have a selective catalytic reduction NOx catalyst including a high-temperature catalyst layer having high capability of reducing NOx at high temperatures and a low-temperature catalyst layer having higher capability of reducing NOx at low temperatures than that of the high-temperature catalyst layer. The low-temperature catalyst layer may be arranged closer to a catalyst substrate than the high-temperature catalyst layer. A supply valve may add an addition quantity of reducing agent for reducing NOx to exhaust gas flowing into the selective catalytic reduction NOx catalyst. A controller may comprise at least one processor configured to control addition of the reducing agent by the supply valve such that the reducing agent concentration in a reducing agent atmosphere formed in the exhaust gas flowing into the selective catalytic reduction NOx catalyst is higher when the temperature of the selective catalytic reduction NOx catalyst is in a specific low temperature range.

Abstract translation: 装置可以具有选择性催化还原NOx催化剂，其包括在高温下具有高还原NOx能力的高温催化剂层和在低温下具有比低温催化剂低的NOx还原能力的低温催化剂层 层。 低温催化剂层可以布置成比高温催化剂层更靠近催化剂基板。 供给阀可以向流入选择性催化还原NOx催化剂的废气中添加减少NOx的还原剂的添加量。 控制器可以包括至少一个处理器，其被配置为控制由供给阀添加还原剂，使得当流入选择性催化还原NOx催化剂的废气中形成的还原剂气氛中的还原剂浓度在 选择性催化还原NOx催化剂处于特定的低温范围。

公开(公告)号：US20160265411A1

公开(公告)日：2016-09-15

申请号：US15031032

申请日：2014-08-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshihisa TSUKAMOTO ,  Kazuhiro ITOH ,  Hiromasa NISHIOKA ,  Daichi IMAI ,  Hiroshi OTSUKI ,  Yasumasa NOTAKE

IPC: F01N9/00 ,  F01N3/023 ,  F01N3/32 ,  F01N3/05 ,  F01N3/22 ,  F01N3/022 ,  F01N3/029

CPC classification number: F01N9/002 ,  B01D46/2429 ,  B01D2046/2437 ,  F01N3/0222 ,  F01N3/0232 ,  F01N3/0238 ,  F01N3/0293 ,  F01N3/05 ,  F01N3/22 ,  F01N3/32 ,  F01N2330/06 ,  F01N2330/30 ,  F01N2330/60 ,  F01N2510/068 ,  F01N2900/0412 ,  F01N2900/1406 ,  F01N2900/1606 ,  F01N2900/1611 ,  F02D41/029 ,  F02D41/1445 ,  F02D2200/0812 ,  Y02T10/47

Abstract: Micropore zones ZMI are defined at upstream sides of partition walls 72 of a particulate filter and macropore zones ZMA are defined at downstream sides of partition walls. The pore size of the partition walls at the micropore zones is set so that the particulate matter and the ash can be trapped by the partition walls at the micropore zones, while the pore size of the partition walls at the macropore zones is set so that the ash can pass through the partition walls at the macropore zones. When a quantity of trapped particulate matter is smaller than a limit quantity, control for increasing gas which temporarily increases the flow rate of the gas which flows into the particulate filter in order to remove the ash from the particulate filter, is performed.

Abstract translation: 微孔区域ZMI被限定在颗粒过滤器的分隔壁72的上游侧，并且大孔区域ZMA被限定在分隔壁的下游侧。 微孔区域的隔壁的孔径被设定为使得微孔区域中的分隔壁可以捕获颗粒物质和灰分，同时将大孔区域的隔壁的孔径设定为使得 灰分可以穿过大孔区域的隔墙。 当捕获的颗粒物质的量小于限制量时，执行用于增加气体的控制，其暂时增加流入微粒过滤器中的气体的流量以从微粒过滤器除去灰分。