公开(公告)号：US20170226910A1

公开(公告)日：2017-08-10

申请号：US15423867

申请日：2017-02-03

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kazuki TSURUMI ,  Hiroshi TANAKA ,  Shigemasa HIROOKA ,  Shingo KORENAGA

IPC: F01N3/20 ,  B01J35/04 ,  B01D53/94 ,  B01J23/38

CPC classification number: F01N3/2026 ,  B01D53/9477 ,  B01D2255/10 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2065 ,  B01D2255/2092 ,  B01D2255/9032 ,  B01D2255/904 ,  B01D2255/908 ,  B01J23/38 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/04 ,  F01N3/281 ,  F01N13/0097 ,  F01N2510/068 ,  F01N2570/16 ,  Y02T10/26

Abstract: In an EHC, a ratio of a heat capacity of the second catalyst body with respect to a heat capacity of the first catalyst body is made within a range of 0.67-1.5. A ratio of an amount of coat of an OSC material in the second catalyst body with respect to an amount of coat of an OSC material in the first catalyst body is made larger than the ratio of the heat capacity of the second catalyst body with respect to the heat capacity of the first catalyst body. A ratio of an amount of support of a noble metal in the second catalyst body with respect to an amount of support of a noble metal in the first catalyst body is made smaller than the ratio of the heat capacity of the second catalyst body with respect to the heat capacity of the first catalyst body.

公开(公告)号：US20170114694A1

公开(公告)日：2017-04-27

申请号：US15317204

申请日：2015-06-16

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Keisuke NAGASAKA ,  Hiroshi TANAKA ,  Kazuki TSURUMI

IPC: F01N9/00 ,  F01N3/20 ,  B01D53/94 ,  F01N3/24

Abstract: According to one aspect of the present invention, there is provided a control device for an internal combustion engine, in which an electric heating catalyst (EHC) having a catalyst support generating heat by energizing is provided to an exhaust passage. The control device includes a control unit configured to energize the support in the case where a rapid change in intake air flow is detected based on an intake air flow of the internal combustion engine or a correlation value of the intake air flow, so as to suppress any occurrence of a crack caused by an increase in difference in temperature between predetermined portions at the support during the rapid change in intake air flow.

公开(公告)号：US20150007551A1

公开(公告)日：2015-01-08

申请号：US14302896

申请日：2014-06-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroshi TANAKA ,  Keisuke NAGASAKA ,  Kazuki TSURUMI

IPC: F01N11/00 ,  F01N3/28 ,  F01N3/20 ,  F01N9/00

CPC classification number: F01N11/00 ,  F01N3/2026 ,  F01N3/2853 ,  F01N2550/02 ,  F01N2900/0422 ,  Y02T10/26 ,  Y02T10/47

Abstract: A control system includes an electrical heating catalyzer, a measuring device and an electronic control unit. The measuring device measures an insulation resistance between a catalyst carrier and case of the electrical heating catalyzer. The electronic control unit determines that the electrical heating catalyzer has a failure when a variation width of the insulation resistance is smaller than or equal to a set value in a historical variation in the insulation resistance measured by the measuring device.

Abstract translation: 控制系统包括电加热催化器，测量装置和电子控制单元。 测量装置测量催化剂载体和电加热催化剂壳体之间的绝缘电阻。 当由测量装置测量的绝缘电阻的历史变化中，当绝缘电阻的变化幅度小于或等于设定值时，电子控制单元确定电加热催化器有故障。