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    LOW TEMPERATURE COOLING DEVICE FOR INTERNAL COMBUSTION ENGINE
    2.
    发明申请
    LOW TEMPERATURE COOLING DEVICE FOR INTERNAL COMBUSTION ENGINE 审中-公开

    公开(公告)号：US20180119651A1

    公开(公告)日：2018-05-03

    申请号：US15572139

    申请日：2016-04-14

    Applicant: DENSO CORPORATION

    Inventor： Keitarou MINAMI ,  Masashi MIYAGAWA ,  Hideaki ICHIHARA

    IPC: F02M26/33 ,  F01P7/16 ,  F02M26/06 ,  F02M26/28 ,  F02B29/04

    CPC classification number: F02M26/33 ,  F01P7/16 ,  F02B29/0437 ,  F02M26/06 ,  F02M26/24 ,  F02M26/28 ,  F02M26/35 ,  Y02T10/146

    Abstract: A low temperature cooling device applied to an internal combustion engine includes an EGR device, a low temperature coolant circuit, a prediction unit predicting whether an EGR cooler falls into a state where a cooling performance falls short according to at least one of an operating state of an internal combustion engine and an outside air environment while a control that dehumidifies an EGR gas by cooling the EGR gas in the EGR cooler is performed, and a control unit performing at least one of a first increase control that increases a flow rate of a coolant flowing into the EGR cooler, a second increase control that increases an air rate of a radiator fan cooling a radiator, and an inhibition control that inhibits the EGR gas from flowing back when the prediction unit predicts that the EGR cooler falls into the state where the cooling performance falls short.

    CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
    3.
    发明申请
    CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 有权
    内燃机控制装置

    公开(公告)号：US20140311450A1

    公开(公告)日：2014-10-23

    申请号：US14255432

    申请日：2014-04-17

    Applicant: DENSO CORPORATION

    Inventor： Keitarou MINAMI ,  Hideaki ICHIHARA ,  Hiroyuki TAKEZOE ,  Hiroshi KATSURAHARA

    IPC: F02P5/04 ,  F02D41/00

    CPC classification number: F02P5/045 ,  F02D41/0072 ,  F02D2041/1412 ,  F02D2041/1431 ,  F02D2200/0402 ,  F02D2200/1015 ,  F02D2250/24 ,  F02P5/1516 ,  Y02T10/46 ,  Y02T10/47

    Abstract: A cylinder-inflow EGR gas amount is estimated, a misfire limit EGR gas amount is calculated on the basis of an engine operation state, and the misfire limit EGR gas amount is compared with the cylinder-inflow EGR gas amount to predict whether a misfire occurs. When the misfire is predicted, a misfire avoidance control is executed. Further, an actual misfire countermeasure effect amount in a case of the execution of the misfire avoidance control is calculated, and the actual misfire countermeasure effect amount is compared with a required misfire countermeasure effect amount to determine whether the misfire is avoidable when the misfire avoidance control is executed. If the misfire is unavoidable even if the misfire avoidance control is executed, a delay restriction value of an ignition timing to avoid the misfire is calculated, and the amount of a delay in the ignition timing is restricted using the delay restriction value.

    Abstract translation: 气缸流入EGR气体量被估计，基于发动机运转状态计算失火极限EGR气体量，并将失火极限EGR气体量与气缸流入EGR气体量进行比较，以预测是否发生失火 。 当预测失火时，执行失火回避控制。 此外，计算在执行失火回避控制的情况下的实际失火对策效果量，并将实际失火对策效果量与所需的失火对策效果量进行比较，以确定当失火回避控制 被执行。 即使执行失火回避控制，如果失火是不可避免的，则计算出避免失火的点火正时的延迟限制值，并且使用延迟限制值来限制点火正时的延迟量。

    EXHAUST CIRCULATING DEVICE FOR INTERNAL COMBUSTION ENGINE
    5.
    发明申请
    EXHAUST CIRCULATING DEVICE FOR INTERNAL COMBUSTION ENGINE 审中-公开

    公开(公告)号：US20170306899A1

    公开(公告)日：2017-10-26

    申请号：US15526069

    申请日：2015-11-16

    Applicant: DENSO CORPORATION

    Inventor： Yoshihisa SANAMI ,  Hideaki ICHIHARA ,  Keitarou MINAMI

    IPC: F02M26/34 ,  F02M26/17 ,  F02M26/06

    CPC classification number: F02M26/34 ,  F02M26/06 ,  F02M26/17

    Abstract: An ejector used in an EGR system is disposed at a position at which at least part of an outer-diameter-gradually-varying portion of a nozzle can be viewed through an introduction hole from the outside of the housing. Consequently, EGR gas introduced into the housing through the introduction hole is introduced into a decompression chamber without colliding with an outer wall of an outer-diameter equivalent portion of the nozzle. The outer-diameter-gradually-varying portion of the nozzle guides the EGR gas from the introduction hole, so that the EGR gas can be efficiently mixed with an air flow of compressed air supplied from an air compressor.

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