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公开(公告)号：US20230250743A1
公开(公告)日：2023-08-10
申请号：US18165509
申请日：2023-02-07
发明人： Yasuto TAKASHIBA
CPC分类号： F01L1/3442 , F02F1/16 , F01L2001/34426
摘要： There is provided a variable valve timing system for an engine in which a cam chain chamber is formed in a cylinder and a cylinder head, the variable valve timing system including: a variable valve device configured to change an opening and closing timing of a valve; and an oil control valve configured to control a hydraulic pressure with respect to the variable valve device. The oil control valve is disposed on an outer surface of the cylinder, which is an outer wall of the cam chain chamber. An oil path for hydraulic pressure control enters the outer wall of the cam chain chamber from the oil control valve, extends from a side of the cylinder to a side of the cylinder head, and crosses the cam chain chamber to the variable valve device through an inner wall of the cam chain chamber.
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公开(公告)号：US20230175455A1
公开(公告)日：2023-06-08
申请号：US18104664
申请日：2023-02-01
申请人： AVL LIST GMBH
发明人： Martin Klampfer , Andreas Zurk
CPC分类号： F02F1/16 , F01L3/08 , F02F1/4285
摘要： Various embodiments of the present disclosure are directed to liquid-cooled cylinder heads. In one example embodiment, a cylinder head is disclosed including a component which extends into a combustion chamber, an upper cooling jacked, a lower cooling jacket, a plurality of valves arranged around the component, a plurality of cylinder head screws, an oil deck, a fire deck, a plurality of valve guides, and a fixed connection. The fixed connection is arranged from each valve guide to the component, and is a ring having at least one support. The support and the ring extend at least from the oil deck to the fire deck thereby bounding the combustion chamber, and the component is connected to the plurality of cylinder head screws.
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公开(公告)号：US11339741B2
公开(公告)日：2022-05-24
申请号：US17212026
申请日：2021-03-25
发明人： Koichi Eto
摘要： A water jacket includes: a cooling channel through which a coolant flows, the cooling channel being formed in a cylinder block in which a plurality of cylinders are formed such that the cooling channel is positioned outside the cylinders; and a cooling groove (slit) through which the coolant flows, the cooling groove being formed between adjacent ones of the cylinders. When a slit end portion is viewed in sectional view in a direction in which the cylinders are arranged, the slit end portion and a cylinder-block inner wall are continuous with each other via an inclined portion inclined so as to become thicker toward the cylinder-block inner wall.
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公开(公告)号：US11293373B2
公开(公告)日：2022-04-05
申请号：US17153037
申请日：2021-01-20
发明人： Hyun Wook Ryu , Sa Hoon Hong , Eun Ho Lee , Min Kyoung Ryu
摘要： A cylinder head configured for dividing coolant introduced thereinto to a combustion chamber side and an exhaust manifold side to increase the amount of coolant introduced to the combustion chamber side, improving cooling performance, may include a head water jacket having a combustion chamber coolant inlet, through which coolant is introduced from a cylinder block to a combustion chamber side, and an exhaust coolant inlet, through which the coolant is introduced from the cylinder block to an exhaust manifold side, the combustion chamber coolant inlet and the exhaust coolant inlet being separated from each other such that the coolant introduced through the combustion chamber coolant inlet flows to the combustion chamber side in an expanded state.
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公开(公告)号：US11248514B2
公开(公告)日：2022-02-15
申请号：US16852633
申请日：2020-04-20
摘要： The present invention relates to a liquid-cooled internal combustion engine comprising an engine block, which includes a plurality of cylinders, and cylinder heads closing the cylinders, wherein each cylinder is surrounded by a respective cooling liner and each cylinder head has provided therein at least one separate cooling chamber connected to the cooling liner of the associated cylinder via at least one transition channel, wherein the transition channels of at least two cylinders are interconnected via a pressure compensation chamber.
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公开(公告)号：US10995694B2
公开(公告)日：2021-05-04
申请号：US16785723
申请日：2020-02-10
发明人： Hirotaka Sunada
摘要： A cylinder block defines a cylinder, in which a piston is reciprocated. The cylinder includes an upper bore, a center bore, and a lower bore arranged in order from proximity to a cylinder head in the axial direction of the cylinder. The inner diameter of the center bore is greater than the inner diameters of the upper bore and the lower bore. The cylinder block defines an upper recess that serves as an upper water jacket surrounding the upper bore and a lower recess that serves as a lower water jacket surrounding the lower bore. The upper recess and the lower recess are spaced apart from each other in the axial direction of the cylinder so as to sandwich a spacer.
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公开(公告)号：US10774780B2
公开(公告)日：2020-09-15
申请号：US16334148
申请日：2017-08-29
申请人： NICHIAS CORPORATION
发明人： Junya Sato
摘要： A cylinder bore wall thermal insulator is installed in a groove-like coolant passage of a cylinder block having cylinder bores in an internal combustion engine to insulate the entire bore wall of all the cylinder bores or part of the bore wall of all the cylinder bores. The thermal insulator includes: a base member made of a synthetic resin and having a shape conforming to the shape of the groove-like coolant passage at the installation position of the thermal insulator; a cylinder bore wall thermal insulating member formed of a heat-expandable rubber and affixed to the inside of the base member; and a cylinder bore opposite wall contact member formed of a heat-expandable rubber and affixed to the outside of the base member. A thermal insulator can be obtained which is less likely to be displaced in the groove-like coolant passage, and is readily manufactured.
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公开(公告)号：US10753307B2
公开(公告)日：2020-08-25
申请号：US16486561
申请日：2018-02-13
申请人： NICHIAS CORPORATION
摘要： A heat retention material cartridge fixed to a base member of a heat retention tool of a cylinder bore's bore wall for heat retention of the cylinder bore wall, which includes a thermosensitive expansion rubber, a back-side pressing member, a rectangular opening, a front-side abutting plate cooperative with the back-side pressing member for sandwiching an outer edge portion of the thermosensitive expansion rubber, and an elastic member attached member to which an elastic member is attached. A convex portion being convex toward the side of the back-side pressing member is formed in a portion of the front-side abutting plate where the outer end is not sandwiched by bendable portions. And, the outer edge portion of the thermosensitive expansion rubber is formed in such a manner that the outer end of the thermosensitive expansion rubber is positioned inside an apex of the convex portion.
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公开(公告)号：US20200063684A1
公开(公告)日：2020-02-27
申请号：US16546437
申请日：2019-08-21
发明人： Akira Sato , Koichi Hatakeyama
摘要： A cylinder liner that is casted in a block and defines a cylinder bore for one cylinder includes: a cylindrical liner body; a projection part including a plurality of projections on an outer peripheral surface of a part of the liner body; and a bore adjacent part inclined at a predetermined angle to an axial direction of the body and extending in the inclination direction, at a predetermined part between an upper side end and a lower side end of the body, of the outer peripheral surface of the body, which faces another cylinder bore to be adjacent when casted in the block. The outer peripheral surface of the bore adjacent part is positioned more on an inner side of the body than the outer peripheral surface above and below, and is formed such that the projections are absent on at least a part of the outer peripheral surface.
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公开(公告)号：US20200003148A1
公开(公告)日：2020-01-02
申请号：US16485666
申请日：2018-02-14
申请人： AVL LIST GMBH
摘要： Aspects of the present disclosure are directed to a cylinder housing of an internal combustion engine. In one embodiment of the present disclosure, the cylinder housing includes at least two adjacently arranged cylinders, each of which includes a wet cylinder liner, a support structure, and a coolant jacket arranged between the support structure and the cylinder liner. The cylinder housing further including at least one screw receptacle for a cylinder head screw, and is positioned between at least two adjacently arranged cylinders in a region of at least one engine transverse plane.
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