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公开(公告)号：US20150345363A1
公开(公告)日：2015-12-03
申请号：US14723214
申请日：2015-05-27
Applicant: Mazda Motor Corporation
Inventor： Yusuke Marutani , Tomohiro Koguchi , Haruki Misumi , Shinji Wakamoto
Abstract: A cooling structure of a multi-cylinder engine is provided. The engine has cylinders and a cylinder block formed with a cylinder bore wall. The cooling structure includes a water jacket formed in the cylinder block and defined by the cylinder bore wall and a jacket outer surface surrounding the cylinder bore wall, a water pump for feeding a coolant to the water jacket, an introduction portion formed in the cylinder block, having an introduction port opening to the jacket outer surface, and for introducing the coolant to the water jacket, and a spacer member accommodated inside the water jacket. The spacer member has a spacer main body surrounding the cylinder bore wall, and a dividing wall protruding toward the jacket outer surface from an outer circumferential surface of the spacer main body. The dividing wall extends in a circumferential direction at a position opposing the introduction port.
Abstract translation: 提供了一种多缸发动机的冷却结构。 发动机具有气缸和形成有气缸孔壁的气缸体。 冷却结构包括形成在气缸体中并由气缸孔壁和围绕气缸孔壁的护套外表面形成的水套，用于将冷却剂供给到水套的水泵，形成在气缸体中的导入部 具有通向所述护套外表面的引入口，并且用于将所述冷却剂引入所述水套，以及容纳在所述水套内的间隔件。 隔离构件具有围绕气缸孔壁的间隔件主体和从隔套主体的外周面朝向护套外表面突出的分隔壁。 分隔壁在与引入口相对的位置处沿圆周方向延伸。
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公开(公告)号：US10738730B2
公开(公告)日：2020-08-11
申请号：US16051883
申请日：2018-08-01
Applicant: Mazda Motor Corporation
Inventor： Ryotaro Nishida , Tomohiro Koguchi , Mikimasa Kawaguchi , Yuichi Ayukawa , Tatsuya Takahata , Takayuki Tominaga , Shinji Watanabe , Keita Watanabe
Abstract: A head-side jacket through which coolant flows is formed in a cylinder head. A main circulation path and a sub circulation path through which coolant fed from a coolant pump respectively circulates are formed. The head-side jacket is separated into an exhaust-port side jacket formed around an exhaust port, and a combustion-chamber-side jacket closer to a combustion chamber than the exhaust-port-side jacket. A heat exchanger is not formed in the main circulation path including the combustion-chamber-side jacket, but is formed in the sub circulation path excluding the combustion-chamber-side jacket and including the exhaust-port-side jacket.
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公开(公告)号：US10519824B2
公开(公告)日：2019-12-31
申请号：US15757028
申请日：2017-03-02
Applicant: MAZDA MOTOR CORPORATION
Inventor： Tomohiro Koguchi , Kenta Honda
Abstract: Disclosed herein is an oil supply device for an internal combustion engine, which includes a control unit that controls activation of an electric oil pump and that functions as either a reserve oil level estimator for estimating the level of oil reserved in auxiliary chambers or a reserve oil level detector for detecting the level of the oil reserved there. When it is estimated or detected that the level of the oil reserved in the auxiliary chambers has become equal to or less than a predetermined reserve oil level while the internal combustion engine is OFF, the control unit performs an oil replenishment control to replenish the auxiliary chambers with the oil by activating the electric oil pump.
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公开(公告)号：US10202890B2
公开(公告)日：2019-02-12
申请号：US15694232
申请日：2017-09-01
Applicant: MAZDA MOTOR CORPORATION
Inventor： Tomohiro Koguchi , Yuichi Ayukawa
Abstract: A transverse engine adjacent to a drive shaft includes an engine body having a crankshaft, a first pipe connected to the engine body and running such that an engine coolant flows therethrough, and an accessory drive system. The accessory drive system includes an endless outer belt wound between a crankshaft pulley and an alternator drive pulley. A portion of the first pipe forms a water protector located between the drive shaft and the outer belt and overlapping with the outer belt as viewed from the front or rear of the vehicle.
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公开(公告)号：US10240496B2
公开(公告)日：2019-03-26
申请号：US15022797
申请日：2015-08-17
Applicant: MAZDA MOTOR CORPORATION
Inventor： Keiichi Kamimura , Hirokazu Matsuura , Tomohiro Koguchi , Kenta Honda
Abstract: An oil supply apparatus includes: an oil pump; a main oil supply path; a sub oil supply path connected to the main oil supply path; a first oil supply section which is connected to the main oil supply path and which supplies oil to a crank bearing section of a specific crank journal; a second oil supply section which is connected to the sub oil supply path and which supplies oil to a crank bearing section of a crank journal other than the specific crank journal; and a control apparatus which sets, as a target oil pressure, a highest required oil pressure among required oil pressures required from a plurality of hydraulic operating sections in accordance with an operation state of the engine, and which controls the discharge amount of the oil pump so that an oil pressure detected by an oil pressure sensor equals the target oil pressure.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20180030867A1
公开(公告)日：2018-02-01
申请号：US15550735
申请日：2016-03-01
Applicant: MAZDA MOTOR CORPORATION
Inventor： Kenta Honda , Tomohiro Koguchi
CPC classification number: F01M11/02 , F01M1/02 , F01M1/06 , F01M1/08 , F01M1/10 , F01M1/16 , F01M5/005 , F01M11/00 , F01M11/0004 , F01M11/03 , F01M2001/0238 , F01M2001/0246 , F01M2001/0253 , F01M2001/064 , F01M2011/0025 , F01M2011/0029 , F01M2011/0054 , F01M2011/0079 , F01M2011/022 , F01M2011/026
Abstract: An object of the present invention is to simplify portions of an oil supply passage which portions are formed at a cylinder block. An oil supply device according to the present invention includes a cylinder block, an oil pan, an oil pump, and an oil filter. Wall portions of the oil pan are coupled to wall portions of the cylinder block. An oil filter is attached to the oil pan. An upstream oil supply passage through which the oil filtrated by the oil filter flows is formed at the oil pan. A downstream oil supply passage including a main gallery extending in a cylinder column direction is formed at the cylinder block. A first communication passage through which the main gallery and the upstream oil supply passage communicate with each other is formed at the wall portion of the cylinder block and the wall portion of the oil pan.
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公开(公告)号：US20170370272A1
公开(公告)日：2017-12-28
申请号：US15542569
申请日：2016-01-15
Applicant: MAZDA MOTOR CORPORATION
Inventor： Tomohiro Koguchi , Ryotaro Nishida
Abstract: An engine cooling device includes a heater circulation passage including an exhaust-side channel and a heater channel, the exhaust-side channel extending through an exhaust port-side portion of a cylinder head, the heater channel extending through a heater core; an auxiliary device circulation passage including a main channel and an auxiliary device channel, the main channel extending through a portion of the cylinder head other than the exhaust port-side portion, the auxiliary device channel extending through an auxiliary device; a temperature detecting portion configured to detect a temperature of an engine; and a channel switching valve configured to perform connection between the main channel and the auxiliary device channel and connection between the heater circulation passage and the auxiliary device circulation passage depending on the detected temperature falling within one of three temperature ranges.
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公开(公告)号：US09803534B2
公开(公告)日：2017-10-31
申请号：US14723214
申请日：2015-05-27
Applicant: Mazda Motor Corporation
Inventor： Yusuke Marutani , Tomohiro Koguchi , Haruki Misumi , Shinji Wakamoto
Abstract: A cooling structure of a multi-cylinder engine is provided. The engine has cylinders and a cylinder block formed with a cylinder bore wall. The cooling structure includes a water jacket formed in the cylinder block and defined by the cylinder bore wall and a jacket outer surface surrounding the cylinder bore wall, a water pump for feeding a coolant to the water jacket, an introduction portion formed in the cylinder block, having an introduction port opening to the jacket outer surface, and for introducing the coolant to the water jacket, and a spacer member accommodated inside the water jacket. The spacer member has a spacer main body surrounding the cylinder bore wall, and a dividing wall protruding toward the jacket outer surface from an outer circumferential surface of the spacer main body. The dividing wall extends in a circumferential direction at a position opposing the introduction port.
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公开(公告)号：US10774702B2
公开(公告)日：2020-09-15
申请号：US15550735
申请日：2016-03-01
Applicant: MAZDA MOTOR CORPORATION
Inventor： Kenta Honda , Tomohiro Koguchi
IPC: F01M5/00 , F01M11/02 , F01M1/16 , F01M11/00 , F01M1/08 , F01M11/03 , F01M1/06 , F01M1/02 , F01M1/10
Abstract: An object of the present invention is to simplify portions of an oil supply passage which portions are formed at a cylinder block. An oil supply device according to the present invention includes a cylinder block, an oil pan, an oil pump, and an oil filter. Wall portions of the oil pan are coupled to wall portions of the cylinder block. An oil filter is attached to the oil pan. An upstream oil supply passage through which the oil filtrated by the oil filter flows is formed at the oil pan. A downstream oil supply passage including a main gallery extending in a cylinder column direction is formed at the cylinder block. A first communication passage through which the main gallery and the upstream oil supply passage communicate with each other is formed at the wall portion of the cylinder block and the wall portion of the oil pan.
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公开(公告)号：US20190040815A1
公开(公告)日：2019-02-07
申请号：US16051883
申请日：2018-08-01
Applicant: Mazda Motor Corporation
Inventor： Ryotaro Nishida , Tomohiro Koguchi , Mikimasa Kawaguchi , Yuichi Ayukawa , Tatsuya Takahata , Takayuki Tominaga , Shinji Watanabe , Keita Watanabe
Abstract: A head-side jacket through which coolant flows is formed in a cylinder head. A main circulation path and a sub circulation path through which coolant fed from a coolant pump respectively circulates are formed. The head-side jacket is separated into an exhaust-port side jacket formed around an exhaust port, and a combustion-chamber-side jacket closer to a combustion chamber than the exhaust-port-side jacket. A heat exchanger is not formed in the main circulation path including the combustion-chamber-side jacket, but is formed in the sub circulation path excluding the combustion-chamber-side jacket and including the exhaust-port-side jacket.
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