公开(公告)号：US20190040815A1

公开(公告)日：2019-02-07

申请号：US16051883

申请日：2018-08-01

申请人： Mazda Motor Corporation

发明人： Ryotaro Nishida ,  Tomohiro Koguchi ,  Mikimasa Kawaguchi ,  Yuichi Ayukawa ,  Tatsuya Takahata ,  Takayuki Tominaga ,  Shinji Watanabe ,  Keita Watanabe

IPC分类号： F02F1/40 ,  F01P7/16

摘要： 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.

公开(公告)号：US10934968B2

公开(公告)日：2021-03-02

申请号：US16738172

申请日：2020-01-09

申请人： Mazda Motor Corporation

发明人： Shinji Watanabe ,  Tatsuya Takahata ,  Yoshiaki Hayamizu ,  Keita Watanabe ,  Mikimasa Kawaguchi

IPC分类号： F02F1/14 ,  F02F1/10 ,  F02F7/00

摘要： An engine cooling structure includes a cylinder block including a block inner peripheral wall that defines a water jacket and a block outer peripheral wall, a spacer housed in the water jacket, and a cooler provided outside the engine body. The spacer includes: a peripheral wall surrounding the block inner peripheral wall; and a dividing wall protruding from the peripheral wall to divide the water jacket into an upper passage and lower passages below the upper passage. A coolant introduced from a coolant inlet into the upper passage passes through an inter-bore part of the block inner peripheral wall. The coolant in the lower passages is introduced into the cooler through a coolant exit.

公开(公告)号：US10995693B2

公开(公告)日：2021-05-04

申请号：US16738146

申请日：2020-01-09

申请人： Mazda Motor Corporation

发明人： Shinji Watanabe ,  Tatsuya Takahata ,  Yoshiaki Hayamizu ,  Keita Watanabe ,  Mikimasa Kawaguchi

IPC分类号： F02F1/14 ,  F01P3/02 ,  F01P3/14 ,  F01P5/10 ,  F01P11/08 ,  F01P3/00

摘要： An engine cooling structure includes a cylinder block including a block inner peripheral wall and a block outer peripheral wall that define a water jacket, and a spacer housed in the water jacket. The block outer peripheral wall includes a coolant inlet for introducing a coolant into the water jacket at one end in a cylinder row direction. The spacer includes a peripheral wall surrounding the block inner peripheral wall, and a dividing wall and a distribution wall provided on the peripheral wall. The dividing wall is provided along a circumferential direction of the peripheral wall and protrudes outward from the peripheral wall between a lower end and an upper end of the coolant inlet. The distribution wall includes an upper distribution wall extending upward from the dividing wall and a lower distribution wall extending downward from the dividing wall.

公开(公告)号：US10738730B2

公开(公告)日：2020-08-11

申请号：US16051883

申请日：2018-08-01

申请人： Mazda Motor Corporation

发明人： Ryotaro Nishida ,  Tomohiro Koguchi ,  Mikimasa Kawaguchi ,  Yuichi Ayukawa ,  Tatsuya Takahata ,  Takayuki Tominaga ,  Shinji Watanabe ,  Keita Watanabe

IPC分类号： F02F1/40 ,  F01P7/16 ,  F01P3/02 ,  F02F1/14

摘要： 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.