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公开(公告)号：US10995693B2
公开(公告)日：2021-05-04
申请号：US16738146
申请日：2020-01-09
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.
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公开(公告)号：US20170298860A1
公开(公告)日：2017-10-19
申请号：US15484710
申请日：2017-04-11
CPC分类号： F02F1/14 , F01P3/02 , F01P5/10 , F01P2003/021
摘要： A cooling structure of a multi-cylinder engine is provided, which includes a first water jacket formed in a cylinder block to surround cylinder bores of cylinders arranged inline, a spacer having a vertical wall surface and inserted into the first jacket, and a coolant inlet formed in the first jacket on a first end side in a cylinder line-up direction. The structure circulates coolant introduced from the inlet to the first jacket and a second water jacket formed in a cylinder head coupled to the cylinder block via a gasket. The spacer has a flow dividing rib extending outwardly from the vertical wall surface and for vertically dividing the coolant flow, introduced from the inlet to an intake- or exhaust-side section of the first jacket, toward the second jacket through a communication hole formed in the gasket and toward a discharging section provided to the cylinder block.
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公开(公告)号：US20170298858A1
公开(公告)日：2017-10-19
申请号：US15484686
申请日：2017-04-11
CPC分类号： F02F1/14 , F01P3/02 , F01P2003/021 , F02F1/40
摘要： A cooling structure of an engine is provided, which includes a water jacket formed in a cylinder block to surround a cylinder bore of the engine, a spacer having a vertical wall surface and inserted into the water jacket, and a coolant inlet formed in an outer wall of the water jacket, and for circulating to the water jacket coolant introduced from the coolant inlet. The vertical wall surface surrounds the cylinder bore. The spacer includes a guide part provided at a position of a lower end part of the vertical wall surface corresponding to the coolant inlet, and for guiding the coolant introduced from the coolant inlet to flow around the vertical wall surface. The guide part extends outwardly from the lower end part of the vertical wall surface toward the coolant inlet along a bottom wall of the water jacket.
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公开(公告)号：US10202932B2
公开(公告)日：2019-02-12
申请号：US15119842
申请日：2015-02-23
发明人： Masanori Doho , Yoshiaki Hayamizu , Jun Nakashima
摘要： A water jacket spacer is arranged to surround substantially an entire periphery of a portion of the cylinder liner which corresponds to the water jacket. An opening through which a coolant introduced from a coolant-introducing section is introduced to an inner side of a water jacket spacer is formed in a portion of the water jacket spacer which corresponds to the coolant-introducing section. An upper section of the water jacket spacer is positioned close to a cylinder block outer peripheral wall. A coolant passage through which the coolant introduced from the opening is circulated around an outer periphery of an upper portion of the cylinder liner is formed between the upper section of the water jacket spacer and the outer periphery of the upper portion of the cylinder liner. A lower section of the water jacket spacer is positioned close to the cylinder liner.
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公开(公告)号：US20170298859A1
公开(公告)日：2017-10-19
申请号：US15484693
申请日：2017-04-11
CPC分类号： F02F1/14 , F01P3/02 , F01P5/10 , F01P2003/021
摘要： A cooling structure of a multi-cylinder engine is provided, which includes a water jacket formed in a cylinder block to surround cylinder bores of cylinders arranged inline, a spacer, and a coolant inlet. The spacer includes openings at positions corresponding to inter-cylinder-bore portions and a rectifying part extending outwardly on a lower side of the openings. The rectifying part inclines continuously upwardly while extending in one of an exhaust- and intake-side section of the jacket from a first end side to a second end side that is the opposite side from the first end side in a cylinder line-up direction, extending on the second end side from the one of the exhaust- and intake-side sections to the other one of the exhaust- and intake-side sections, and then extending from the second end side to the first end side in the other one of the exhaust- and intake-side sections.
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公开(公告)号：US10934968B2
公开(公告)日：2021-03-02
申请号：US16738172
申请日：2020-01-09
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.
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公开(公告)号：US10174708B2
公开(公告)日：2019-01-08
申请号：US15484693
申请日：2017-04-11
摘要： A cooling structure of a multi-cylinder engine is provided, which includes a water jacket formed in a cylinder block to surround cylinder bores of cylinders arranged inline, a spacer, and a coolant inlet. The spacer includes openings at positions corresponding to inter-cylinder-bore portions and a rectifying part extending outwardly on a lower side of the openings. The rectifying part inclines continuously upwardly while extending in one of an exhaust- and intake-side section of the jacket from a first end side to a second end side that is the opposite side from the first end side in a cylinder line-up direction, extending on the second end side from the one of the exhaust- and intake-side sections to the other one of the exhaust- and intake-side sections, and then extending from the second end side to the first end side in the other one of the exhaust- and intake-side sections.
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公开(公告)号：US10113501B2
公开(公告)日：2018-10-30
申请号：US15484686
申请日：2017-04-11
摘要： A cooling structure of an engine is provided, which includes a water jacket formed in a cylinder block to surround a cylinder bore of the engine, a spacer having a vertical wall surface and inserted into the water jacket, and a coolant inlet formed in an outer wall of the water jacket, and for circulating to the water jacket coolant introduced from the coolant inlet. The vertical wall surface surrounds the cylinder bore. The spacer includes a guide part provided at a position of a lower end part of the vertical wall surface corresponding to the coolant inlet, and for guiding the coolant introduced from the coolant inlet to flow around the vertical wall surface. The guide part extends outwardly from the lower end part of the vertical wall surface toward the coolant inlet along a bottom wall of the water jacket.
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