公开(公告)号：US20220268196A1

公开(公告)日：2022-08-25

申请号：US17618077

申请日：2019-06-13

申请人： NISSAN MOTOR CO., LTD.

发明人： Jin YOKOYAMA ,  Kouichi MURAKAMI ,  Akikazu SAKAI

IPC分类号： F01N9/00 ,  F01N3/029 ,  F01N3/035 ,  F01N3/10

摘要： An under-floor catalyst (33) includes a GPF (41) capable of trapping fine exhaust particles in exhaust gas, and a downstream-side catalyst (42) positioned on the downstream side of GPF (41). GPF (41) can be supplied with secondary air. When an internal combustion engine (10) is stopped during travel, the secondary air is supplied to GPF (41) in which the fine exhaust particles are accumulated. At this time, the temperature of GPF (41) is equal to or higher than a predetermined temperature. Thus, a deterioration in the exhaust gas purification performance of under-floor catalyst (33) at the time of the start of internal combustion engine (10) can be suppressed.

公开(公告)号：US20230193799A1

公开(公告)日：2023-06-22

申请号：US17926689

申请日：2020-05-28

申请人： NISSAN MOTOR CO., LTD.

发明人： Kouichi MURAKAMI ,  Jin YOKOYAMA ,  Akikazu SAKAI ,  Hideaki TAKAHASHI

IPC分类号： F01N3/20 ,  F01N3/05 ,  F01N3/32 ,  F01N9/00

CPC分类号： F01N3/2013 ,  F01N3/05 ,  F01N3/32 ,  F01N9/00 ,  F01N2900/1404

摘要： An internal combustion engine (1) has anelectric heating catalyst (5) in an exhaust passage (2) . When it is detected that a door has been opened, the electric heating catalyst (5) is preheated. If power of an engine controller (8) is lost during the preheating, information on an estimated temperature, which is stored in the engine controller (8), is lost. The engine controller (8) forbids energization of the electric heating catalyst (5) until a cooling period necessary for temperature of the electric heating catalyst (5) to fall elapses after recovery of the power of the engine controller (8) . After the cooling period elapses, the preheating is started again.