Invention Grant
- Patent Title: Method of controlling temperature of exhaust purification device of internal combustion engine, and internal combustion engine control device
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Application No.: US17050541Application Date: 2018-04-27
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Publication No.: US11300065B2Publication Date: 2022-04-12
- Inventor: Tomohiro Sakata , Futoshi Yoshimura , Yoshihiko Iwabuchi
- Applicant: NISSAN MOTOR CO., LTD.
- Applicant Address: JP Yokohama
- Assignee: NISSAN MOTOR CO., LTD.
- Current Assignee: NISSAN MOTOR CO., LTD.
- Current Assignee Address: JP Yokohama
- Agency: Foley & Lardner LLP
- International Application: PCT/IB2018/000628 WO 20180427
- International Announcement: WO2019/207334 WO 20191031
- Main IPC: F01N3/00
- IPC: F01N3/00 ; F02D41/02 ; F01N13/00 ; F01N3/10 ; F01N3/30
Abstract:
A control unit (8) calculates a temperature difference (ΔTg). The temperature difference (ΔTg) is a value obtained by subtracting the temperature (Tg) of a GPF (22) from a target GPF temperature (Tgt). If the temperature difference (ΔTg) is less than or equal to zero, the control unit (8) implements a fuel economy-oriented conventional control. If the temperature difference (ΔTg) is greater than zero, the control unit (8) implements a filter temperature-increasing control. The filter temperature-increasing control causes the exhaust temperature to be increased so that the temperature (Tg) of the GPF (22) becomes greater than or equal to the target GPF temperature (Tgt).
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