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    Control device
    1.
    发明授权
    Control device 有权

    公开(公告)号：US10900426B2

    公开(公告)日：2021-01-26

    申请号：US16069027

    申请日：2017-01-10

    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

    Inventor： Seiji Asano ,  Yoshihiko Akagi ,  Shinya Matohara ,  Kazuhiro Oryoji ,  Kunihiko Suzuki

    IPC: F02D41/00 ,  F02D9/02 ,  F02D41/18 ,  G01F1/696 ,  G01F15/02 ,  G05D16/20

    Abstract: An object is to provide a control device that calculates an intake pipe pressure of an engine, in which the humidity of air is measured, and a change in a gas constant due to a change in the total number of moles of air is corrected, to improve the accuracy of the calculation value of the intake pipe pressure.
    A control device that controls an engine provided with an air amount measurement unit that measures an air amount passing through a throttle throttle valve provided in an intake passage of the engine, and a humidity measurement unit that measures a humidity of air passing through the throttle throttle valve, includes: an air amount calculation unit that calculates an air amount flowing into a cylinder of the engine based on a measurement result of the air amount measurement unit; and a pressure calculation unit that calculates a pressure of the intake manifold on a downstream side of the throttle throttle valve based on the air amount measured by the air amount measurement unit, the air amount calculated by the air amount calculation unit, and the humidity measured by the humidity measurement unit.

    Control device for internal combustion engine
    2.
    发明授权
    Control device for internal combustion engine 有权

    公开(公告)号：US10941726B2

    公开(公告)日：2021-03-09

    申请号：US16341251

    申请日：2017-11-01

    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

    Inventor： Shogo Namba ,  Masayuki Saruwatari ,  Kazuhiro Oryoji

    IPC: F02B17/00 ,  F02D41/30 ,  F02B29/04 ,  F02D13/02 ,  F02P5/04 ,  F02P5/15

    Abstract: Torque fluctuations caused by misfire and abnormal combustion are prevented appropriately at the time of switching from SI to HCCI, and exhaust of NOx is restricted at the time of switching.
    Provided is a control apparatus for an internal combustion engine performing a plurality of combustion modes each having a different air-fuel ratio and compression end temperature in a cylinder 7 from each other. In the middle of switching from a first combustion mode to a second combustion mode, an intermediate combustion mode in which the compression end temperature is increased while keeping a different air-fuel ratio from the air-fuel ratio of the first combustion mode and the air-fuel ratio of the second combustion mode is performed. Accordingly, at the time of switching between an operation mode performing SI and an operation mode performing HCCI, a temperature in the cylinder 7 and an air-fuel ratio are controlled appropriately, torque fluctuations caused by misfire and abnormal combustion can be prevented appropriately, and exhaust of NOx can be restricted.

    Fuel injection device
    4.
    发明授权
    Fuel injection device 有权

    公开(公告)号：US10677208B2

    公开(公告)日：2020-06-09

    申请号：US15568282

    申请日：2016-04-08

    Applicant: Hitachi Automotive Systems, Ltd.

    Inventor： Tomoyuki Hosaka ,  Eiji Ishii ,  Yoshihiro Sukegawa ,  Taisuke Sugii ,  Kazuki Yoshimura ,  Kazuhiro Oryoji ,  Masayuki Saruwatari

    IPC: F02M61/10 ,  F02M61/18

    Abstract: Provided is a fuel injector that is capable of reducing penetration. The fuel injector of the present invention includes a valve body having a valve body side seat surface, a valve seat side seat surface that abuts on the valve body side seat surface, and an injection hole that is provided downstream of a position at which the valve body side seat surface abuts on the valve seat side seat surface. The valve body has a projection that is formed from the valve body side seat surface toward the injection hole, and the projection is formed to be smaller in a direction of fuel flow between seats than a radius of an upstream opening surface of the injection hole.

    Control device for internal combustion engine
    5.
    发明授权
    Control device for internal combustion engine 有权

    公开(公告)号：US10280855B2

    公开(公告)日：2019-05-07

    申请号：US15528970

    申请日：2015-10-28

    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

    Inventor： Kazuhiro Oryoji ,  Yoshihiko Akagi

    IPC: F02D41/02 ,  F02D45/00 ,  F02D21/08 ,  F02D41/06 ,  F02D41/00 ,  F02D43/00 ,  F02M26/05 ,  F02M26/28 ,  F02M26/00

    Abstract: An internal combustion engine control device equipped with air cylinders and an EGR mechanism that returns exhaust gas emitted from the air cylinders to the intake side of the air cylinders is provided. The internal combustion engine control device includes an EGR control unit that controls the EGR flow volume of the EGR mechanism, and a humidity detection unit that directly or indirectly detects the humidity of outside air supplied to the air cylinders. The EGR control unit calculates the moisture amount in the outside air and the moisture amount in the recirculated exhaust gas, and controls the EGR mechanism on the basis of: a stable combustion limit air cylinder mass, which is set in accordance with the combustion state in the air cylinders; the mass of the air introduced into the air cylinders; the mass of the fuel; and the moisture amounts.

    Engine control system and method
    8.
    发明授权
    Engine control system and method 有权

    公开(公告)号：US10794310B2

    公开(公告)日：2020-10-06

    申请号：US16158381

    申请日：2018-10-12

    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

    Inventor： Zicheng Ge ,  Yahodeep Lonari ,  Kazuhiro Oryoji

    IPC: F02D41/02 ,  F01N3/08 ,  F02D41/14 ,  F02D41/24

    Abstract: In some examples, a system including one or more processors may receive sensor data from one or more sensors indicating one or more engine parameters of an engine including a combustion chamber. Based on the sensor data, the system may determine a homogeneity index indicative of a homogeneity of an air-fuel mixture within the combustion chamber. Furthermore, the system may determine an estimated amount of NOx in the exhaust gas based at least in part on the homogeneity index. In addition, based at least partially on the estimated amount of NOx in the exhaust gas, the system may send an instruction to control an engine component.

    Control device for internal combustion engine
    10.
    发明授权
    Control device for internal combustion engine 有权

    公开(公告)号：US10400738B2

    公开(公告)日：2019-09-03

    申请号：US15742099

    申请日：2016-06-22

    Applicant: Hitachi Automotive Systems, Ltd.

    Inventor： Kazuhiro Oryoji ,  Yoshihiko Akagi

    IPC: F02P5/15 ,  F02D43/00 ,  F02D15/04 ,  F02D15/02 ,  F02D37/02 ,  F02D13/02 ,  F02D35/02 ,  F02D41/00 ,  F02P5/04 ,  F02P5/152

    Abstract: It is an object of the present invention to provide a control device for an internal combustion engine capable of appropriately controlling compression ratio and ignition timing before the target compression ratio that is set according to humidity is attained. A control device for an internal combustion engine controls the internal combustion engine including a cylinder, humidity detection means for detecting humidity of outside air supplied to the cylinder, a variable compression ratio mechanism for changing a compression ratio of the cylinder, and an ignition device igniting air-fuel mixture in the cylinder, and the control device includes: a compression ratio control unit controlling the variable compression ratio mechanism; and an ignition control unit controlling ignition timing of the ignition device, wherein corresponding characteristics between compression ratio and ignition timing are determined for each humidity according to a predetermined condition of an operation state of the internal combustion engine, the compression ratio control unit determines a target compression ratio of the variable compression ratio mechanism according to the detected humidity, and while the variable compression ratio mechanism changes a compression ratio to the target compression ratio, the ignition control unit controls the ignition device on the basis of corresponding characteristics determined according to the detected humidity.

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