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    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE
    2.
    发明申请
    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE 有权

    公开(公告)号：US20170096926A1

    公开(公告)日：2017-04-06

    申请号：US15280258

    申请日：2016-09-29

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Kinji MORIHIRO

    IPC: F01N9/00

    CPC classification number: F01N9/007 ,  F01N3/101 ,  F01N2430/06 ,  F01N2560/02 ,  F01N2560/025 ,  F01N2900/0402 ,  F01N2900/0416 ,  F01N2900/1402 ,  Y02T10/22 ,  Y02T10/47

    Abstract: The exhaust purification system comprises a control apparatus performing main feedback control controlling the amount of fed fuel so that the output air-fuel ratio of the upstream side sensor becomes a target value, sub feedback control setting the target air-fuel based on the output air-fuel ratio of the downstream side sensor, main learning control controlling the amount of fed fuel based on a main learning value, and sub learning control controlling the amount of fed fuel based on a sub learning value. The control apparatus performs sub learning promotion control so that the sub learning value easily changes to a suitable value when a sub learning promotion condition, which is satisfied when the absolute values of the main learning value and the sub learning value are respectively predetermined reference absolute values or more and these learning values are opposite in sign, is satisfied.

    FUEL SUPPLY SYSTEM FOR AN INTERNAL COMBUSTION ENGINE
    3.
    发明申请
    FUEL SUPPLY SYSTEM FOR AN INTERNAL COMBUSTION ENGINE 审中-公开
    内燃机燃油供应系统

    公开(公告)号：US20160010570A1

    公开(公告)日：2016-01-14

    申请号：US14794998

    申请日：2015-07-09

    Applicant: AISAN KOGYO KABUSHIKI KAISHA ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Ryuji MIYAZAKI ,  Hidetoshi TSUTSUMI ,  Tomonori NAKATSUKA ,  Kinji MORIHIRO ,  Koji HONDA

    IPC: F02D41/00 ,  F02M61/14 ,  F02M25/08

    CPC classification number: F02D41/004 ,  F02D41/0042 ,  F02D2200/0406 ,  F02M25/0836 ,  F02M25/089 ,  F02M61/145

    Abstract: A fuel supply system for use with an internal combustion engine has a check valve and a purge valve disposed in a purge passage that extends from a canister to connect with an intake passage of the internal combustion engine. A controller regulates the purge valve open with a first opening degree or a first duty ratio during a purge operation. The controller may also regulate the purge valve to open with a second opening degree larger than the first opening degree or a second duty ratio larger than the first duty ratio a predetermined time after initiating the purge operation.

    Abstract translation: 一种与内燃机一起使用的燃料供应系统具有止回阀和排气阀，其设置在从罐延伸并与内燃机的进气通道连接的净化通道中。 控制器在清洗操作期间以第一开度或第一占空比来调节净化阀打开。 控制器还可以在启动清洗操作之后的预定时间内调节净化阀打开大于第一开度的第二开度或大于第一占空比的第二占空比。

    EXHAUST GAS PURIFICATION APPARATUS FOR INTERNAL COMBUSTION ENGINE
    5.
    发明申请
    EXHAUST GAS PURIFICATION APPARATUS FOR INTERNAL COMBUSTION ENGINE 审中-公开

    公开(公告)号：US20200182116A1

    公开(公告)日：2020-06-11

    申请号：US16697345

    申请日：2019-11-27

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Koji UMEZAWA ,  Kinji MORIHIRO

    IPC: F01N3/10 ,  F02D41/14

    Abstract: A decrease in purification performance of a system as a whole is suppressed in cases where catalysts are arranged in an upstream side portion and in a downstream side portion of an exhaust passage in an internal combustion engine. A first catalyst, a sensor and a second catalyst are sequentially arranged in the exhaust passage of the internal combustion engine, wherein a switch is made between lean control and rich control in such a manner that an amount of increase or decrease in a storage amount of oxygen falls within a predetermined range, and in cases where the rich control is carried out after performing a predetermined number of times of rich control, the rich control is continued until an air fuel ratio detected by the sensor becomes equal to or less than a rich determination threshold value which is smaller than a stoichiometric air fuel ratio.

    SENSOR SYSTEM
    6.
    发明申请
    SENSOR SYSTEM 审中-公开

    公开(公告)号：US20190136738A1

    公开(公告)日：2019-05-09

    申请号：US16170444

    申请日：2018-10-25

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Kinji MORIHIRO

    IPC: F01N11/00 ,  F01N13/00

    Abstract: A sensor system includes: a controller configured to: predict a temperature of exhaust gas of an internal combustion engine in a position in which an exhaust gas sensor having a sensor element is arranged; and control a heater so as to make a temperature of the sensor element close to a target temperature included in a predetermined range, wherein in cases where the predicted temperature of the exhaust gas is higher than a reference temperature, the controller is configured to make the target temperature lower when the predicted temperature is high than when it is low, within a range lower than the reference temperature, whereas in cases where the predicted temperature is lower than the reference temperature, the controller is configured to make the target temperature lower when the predicted temperature is high than when it is low, within a range higher than the reference temperature.

    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE
    7.
    发明申请
    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE 审中-公开

    公开(公告)号：US20190136737A1

    公开(公告)日：2019-05-09

    申请号：US16164385

    申请日：2018-10-18

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Koji UMEZAWA ,  Kinji MORIHIRO

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

    Abstract: An exhaust purification system of the internal combustion engine comprises: an upstream side catalyst 20 arranged in an exhaust passage, a downstream side catalyst 24 arranged at a downstream side of the upstream side catalyst, an air-fuel ratio sensor 41 detecting an air-fuel ratio of outflowing exhaust gas flowing out from the upstream side catalyst, an air-fuel ratio control part 31 controlling an air-fuel ratio of inflowing exhaust gas flowing into the upstream side catalyst to a target air-fuel ratio, and a temperature calculating part 32 calculating a temperature of the downstream side catalyst. The air-fuel ratio control part switches the first control to the second control when a temperature of the downstream side catalyst calculated by the temperature calculating part rises to a reference temperature which is equal to or higher than an activation temperature of the downstream side catalyst.

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