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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
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.
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Patent Agency Ranking
公开(公告)号：US20130160723A1
公开(公告)日：2013-06-27
申请号：US13721961
申请日：2012-12-20
Applicant: DENSO CORPORATION
Inventor： Masashi MIYAGAWA
IPC: F01P7/16
CPC classification number: F01P7/16 , F01P7/167 , F01P2003/027 , F01P2060/04 , F01P2060/08 , F01P2060/16
Abstract: A coolant circulation system for an engine includes a cylinder block passage and a cylinder head passage, which are provided respectively in a cylinder block portion and a cylinder head portion of the engine. These two passages serve as passages through which a coolant flows to cool the cylinder block portion and the cylinder head portion. The cylinder block passage and the cylinder head passage are connected in parallel to each other. The coolant circulation system further includes a first heat exchanger connected to the cylinder block passage, a second heat exchanger connected to the cylinder head passage, a radiator connected to both the cylinder block passage and the cylinder head passage, and a control unit capable of controlling flow rates of the coolant flowing through the cylinder block passage and the cylinder head passage respectively.
Abstract translation: 用于发动机的冷却剂循环系统包括分别设置在发动机的气缸体部分和气缸盖部分中的气缸体通道和气缸盖通道。 这两个通道用作通道，冷却剂通过该通道冷却气缸体部分和气缸盖部分。 气缸体通道和气缸盖通道彼此并联连接。 冷却剂循环系统还包括连接到气缸体通道的第一热交换器，连接到气缸盖通道的第二热交换器，连接到气缸体通道和气缸盖通道的散热器，以及能够控制 流过气缸体通道和气缸盖通道的冷却剂流量分别为。
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公开(公告)号：US20230035792A1
公开(公告)日：2023-02-02
申请号：US17963742
申请日：2022-10-11
Applicant: DENSO CORPORATION
Inventor： Masashi MIYAGAWA , Osamu HAKAMATA , Akira YAMANAKA , Kenshirou MATSUI , Masaki HARADA
Abstract: A reserve tank includes a gas-liquid separator, a flow inlet portion, a flow outlet portion, and a projection shaped in a tubular form. The gas-liquid separator is shaped in a bottomed tubular form and is centered on a predetermined axis. The flow inlet portion is configured to conduct coolant into an inside of the gas-liquid separator. The flow outlet portion is configured to discharge the coolant from the inside of the gas-liquid separator. The projection extends along the predetermined axis from a bottom wall at the inside of the gas-liquid separator. An inner space of the projection opens to an inner space of the gas-liquid separator at a distal end portion of the projection.
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公开(公告)号：US20220065157A1
公开(公告)日：2022-03-03
申请号：US17454298
申请日：2021-11-10
Applicant: DENSO CORPORATION
Inventor： Masashi MIYAGAWA , Akira YAMANAKA , Osamu HAKAMATA
IPC: F01P11/02
Abstract: A reserve tank includes a vapor-liquid separator, an inlet portion, an outlet portion, and a protrusion. The vapor-liquid separator defines an inner space for separating a vapor phase and a liquid phase of a cooling water. The inlet portion defines a first opening through which the cooling water is supplied into the inner space and the outlet portion defines a second opening through which the cooling water is discharged from the inner space. The protrusion protrudes upward from a bottom surface of the vapor-liquid separator. An inner circumferential surface of the vapor-liquid separator and an outer circumferential surface of the protrusion are coaxially provided to define an annular passage in the inner space. The cooling water introduced from the first opening flows spirally in the annular passage.
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公开(公告)号：US20200318529A1
公开(公告)日：2020-10-08
申请号：US16904110
申请日：2020-06-17
Applicant: DENSO CORPORATION
Inventor： Masashi MIYAGAWA
Abstract: A cooling circuit includes a first coolant passage in which a coolant flows, a second coolant passage in which the coolant flows, a thermostat, and an oil cooler configured to heat or cool oil. The thermostat interrupts a flow of the coolant flowing through the first coolant passage when a temperature of the coolant flowing into the thermostat is lower than a predetermined temperature, and allows the coolant to flow through the first coolant passage when the temperature of the coolant is at or above a predetermined temperature. The oil cooler includes a first coolant inflow port, a first coolant outflow port, a second coolant inflow port, and a second coolant outflow port. The oil cooler heats or cools the oil by heat exchange between the coolant flowing from the first coolant inflow port or/and the second coolant inflow port and the oil.
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公开(公告)号：US20180100471A1
公开(公告)日：2018-04-12
申请号：US15569194
申请日：2016-04-14
Applicant: DENSO CORPORATION
Inventor： Keitarou MINAMI , Masashi MIYAGAWA , Hideaki ICHIHARA
CPC classification number: F02M26/33 , F01P3/18 , F01P7/16 , F01P2007/146 , F02B29/0418 , F02B29/0443 , F02B29/0493 , F02M26/06 , F02M26/28 , F02M26/35 , Y02T10/146
Abstract: A low temperature cooling device applied to an internal combustion engine includes an EGR device returning a part of an exhaust gas of an internal combustion engine to an intake passage as an EGR gas, a low temperature coolant circuit circulating a coolant through an intercooler cooling an intake gas of the internal combustion engine and an EGR cooler cooling the EGR gas, a flow rate control valve regulating a flow rate ratio between the coolant flowing into the intercooler and the coolant flowing into the EGR cooler, and a control unit varying the flow rate ratio between the coolant flowing into the intercooler and the coolant flowing into the EGR cooler by controlling the flow rate control valve according to an outside air environment and an operating state of the internal combustion engine.
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