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1. 发明授权

US10054064B2 Actuator mounting structure for internal-combustion engine having variable compression ratio 有权
公开(公告)号：US10054064B2
公开(公告)日：2018-08-21
申请号：US14416362
申请日：2013-06-03
申请人： NISSAN MOTOR CO., LTD.
发明人： Yoshiaki Tanaka , Ryosuke Hiyoshi , Yusuke Takagi , Katsutoshi Nakamura
IPC分类号： F02B75/04 , F02D15/02 , F02F7/00 , F02B75/02 , F02D15/04 , F02D13/02 , F01M11/00
CPC分类号： F02D15/02 , F01M11/0004 , F02B75/04 , F02B75/048 , F02B2075/025 , F02D13/0269 , F02D15/04 , F02F7/0068
摘要： An actuator mounting structure of a variable compression ratio internal combustion engine includes: a variable compression ratio mechanism arranged to vary an engine compression ratio in accordance with a rotational position of a control shaft; an actuator arranged to drivingly rotate the control shaft, the actuator being fixed on an actuator mounting portion provided to a side wall of a main body of the engine by using a plurality of fixing bolts, and a rigidity improvement section arranged to improve a mounting rigidity of the actuator to the actuator mounting portion, and which is provided within an inter-bolt distance between two bolts of the plurality of the fixing bolts, which are located on the both sides in a direction of a crank shaft.

2. 发明授权

US08881695B2 Variable compression ratio internal combustion engine 有权
标题翻译：可变压缩比内燃机
公开(公告)号：US08881695B2
公开(公告)日：2014-11-11
申请号：US13856189
申请日：2013-04-03
申请人： Nissan Motor Co., Ltd.
发明人： Ryosuke Hiyoshi , Katsutoshi Nakamura
IPC分类号： F02B75/04
CPC分类号： F02B75/047 , F02B75/048
摘要： A variable compression ratio internal combustion engine includes a variable compression ratio mechanism, an actuator and a linking mechanism. The actuator is varies and maintains a rotational position of the first control shaft. The linking mechanism includes a second control shaft and a lever. The second control shaft is selectively turned by the actuator. The lever links the second control shaft to the first control shaft such that transference of vibration of the first control shaft to the second control shaft is suppressed. The first control shaft is pivotally linked to a first end of the lever by a first linking pin. The second control shaft is pivotally linked to a second end of the lever by a second linking pin.
摘要翻译：可变压缩比内燃机包括可变压缩比机构，致动器和连杆机构。致动器变化并保持第一控制轴的旋转位置。连接机构包括第二控制轴和杆。第二控制轴由致动器选择性地转动。杠杆将第二控制轴连接到第一控制轴，从而抑制第一控制轴向第二控制轴的振动传递。第一控制轴通过第一连接销枢转地连接到杆的第一端。第二控制轴通过第二连接销枢转地连接到杠杆的第二端。

3. 发明授权

US10001056B2 Internal combustion engine with variable compression ratio 有权
公开(公告)号：US10001056B2
公开(公告)日：2018-06-19
申请号：US14760274
申请日：2013-12-16
申请人： NISSAN MOTOR CO., LTD.
发明人： Ryosuke Hiyoshi , Katsutoshi Nakamura , Takeharu Sugita
IPC分类号： F02B75/04 , F02F7/00
CPC分类号： F02B75/047 , F02B75/045 , F02F7/0053
摘要： It has variable compression ratio mechanism (10) that changes engine compression ratio depending on the rotational position of first control shaft (14). First control shaft (14) and second control shaft, which is connected to a motor, are coupled together by lever (24) of coupling mechanism (20). First arm portion (25) of first control shaft (14) and one end of lever (24) are rotatably coupled together by first coupling pin (26). When viewed in the axial direction of this first coupling pin (26), at least at a given compression ratio position, first coupling pin (26) is arranged at a position away from bearing cap (30) that is for rotatably supporting first control shaft (14).

4. 发明授权

US09863311B2 Variable compression ratio internal combustion engine 有权
公开(公告)号：US09863311B2
公开(公告)日：2018-01-09
申请号：US15506899
申请日：2014-09-02
申请人： Nissan Motor Co., Ltd.
发明人： Ryosuke Hiyoshi , Katsutoshi Nakamura
IPC分类号： F02B75/04 , F02B75/32
CPC分类号： F02B75/04 , F02B75/045 , F02B75/32 , F02D15/02
摘要： A variable compression ratio internal combustion engine includes: a variable compression ratio mechanism arranged to vary an engine compression ratio in accordance with a rotation position of a first control shaft; an actuator arranged to vary and hold the rotation position of the first control shaft; and a link mechanism arranged to connect the actuator and the first control shaft, the link mechanism including; a second control shaft, a lever, a first arm portion, a first link pin, a second arm portion, and a second link pin, the first link pin having a diameter larger than a diameter of the second link pin.

5. 发明申请

US20130263816A1 Multi-Link Internal Combustion Engine 有权
标题翻译：多连杆内燃机
公开(公告)号：US20130263816A1
公开(公告)日：2013-10-10
申请号：US13855848
申请日：2013-04-03
申请人： NISSAN MOTOR CO., LTD.
发明人： Yusuke Takagi , Yoshiaki Tanaka , Katsutoshi Nakamura
IPC分类号： F02B75/32
CPC分类号： F02B75/32 , F01M11/0004 , F01M2011/0033 , F01M2011/005 , F02B41/04
摘要： A multi-link internal combustion engine generally includes a cylinder block, an oil pan mounted to the undersurface of the cylinder block to define a crank chamber, the oil pan being formed with a shallow bottom portion and a deep bottom portion for storing oil. The multi-link internal combustion engine further includes a multi-link, piston-crank mechanism disposed in the crank chamber, a pivotal link member of the piston-crank mechanism pivotal about a pivotal fulcrum located on the side of oil pan; and an oil guide wall provided on the shallow bottom portion in the crank chamber for guiding the oil displaced due to the movement of the pivotal link member to the side of deep bottom portion.
摘要翻译：多连杆内燃机通常包括气缸体，安装在气缸体的下表面以限定曲柄室的油盘，油盘形成有浅底部和用于储存油的深底部分。多连杆内燃机还包括设置在曲柄室中的多连杆活塞曲柄机构，活塞 - 曲柄机构的枢转连杆构件围绕位于油盘一侧的枢转支点枢转; 以及设置在曲柄室的浅底部上的引导壁，用于将由于枢转连杆构件的移动而移动的油引导到深底部的一侧。

6. 发明授权

US11994046B2 Lower link of internal combustion engine 有权
公开(公告)号：US11994046B2
公开(公告)日：2024-05-28
申请号：US18026307
申请日：2020-09-15
申请人： NISSAN MOTOR CO., LTD.
发明人： Hiroki Ichihara , Tomoya Tojo , Kensuke Ikehara , Takashi Tanabe , Katsutoshi Nakamura
IPC分类号： F01M1/06 , F02B75/32 , F02B75/04
CPC分类号： F01M1/06 , F02B75/32 , F01M2001/066 , F02B75/045
摘要： A lower link (6) is provided with an oil hole (30) in a crank pin bearing portion (11) in order to supply a jet of oil to a connecting portion between an upper pin (4) and an upper link (3). Oil hole (30) is composed of a first oil hole (31) linearly extending from the inner peripheral surface of crank pin bearing portion (11) outwardly in the radial direction, and a second oil hole (32) linearly extending from the outer surface of lower link (6) so as to intersect a distal end portion of first oil hole (31). An inclination angle (θ) of first oil hole (31) with a divided surface (14) set as a reference becomes relatively small, and hence the position of an oil inlet (31b) involving a problem of stress concentration becomes closer to divided surface (14) exhibiting a relatively low stress. Consequently, the stress concentration at oil inlet (31b) is alleviated.

7. 发明授权

US10190491B2 Internal combustion engine 有权
公开(公告)号：US10190491B2
公开(公告)日：2019-01-29
申请号：US15570247
申请日：2015-04-03
申请人： Nissan Motor Co., Ltd.
发明人： Katsutoshi Nakamura , Masayoshi Tsubokawa
IPC分类号： F02B75/04 , F02B75/32 , F02D15/02
摘要： When a stopper portion is brought into abutment against body high-compression-ratio side stopper portion, when viewed in the control shaft axial direction, it is configured that the distance between body high-compression-ratio side stopper surface and control-shaft high-compression-ratio side stopper surface becomes relatively longer as being closer to the control shaft rotation center. Similarly, when a stopper portion is brought into abutment against body low-compression-ratio side stopper portion, when viewed in the control shaft axial direction, the distance between body low-compression-ratio side stopper surface and control-shaft, low-compression-ratio side stopper surface becomes relatively longer as being closer to the control shaft rotation center.

8. 发明授权

US09476366B2 Control device and control method for variable compression ratio internal combustion engines 有权
标题翻译：可变压缩比内燃机的控制装置和控制方法
公开(公告)号：US09476366B2
公开(公告)日：2016-10-25
申请号：US14421241
申请日：2013-06-03
申请人： NISSAN MOTOR CO., LTD.
发明人： Yoshiaki Tanaka , Ryosuke Hiyoshi , Yusuke Takagi , Katsutoshi Nakamura
IPC分类号： F02D15/00 , F02D37/02 , F01M9/06 , F01M11/12 , F02D15/02 , F02B75/04 , F02D41/30 , F02D41/00
CPC分类号： F02D15/00 , F01M9/06 , F01M11/12 , F02B75/045 , F02B75/048 , F02D15/02 , F02D37/02 , F02D41/0002 , F02D41/30
摘要： There are provided a variable compression-ratio mechanism (20) capable of varying an engine compression ratio in accordance with a rotational position of a control shaft (24); a speed reducer (44) configured to reduce in speed a rotational power of an actuator and transmit the speed-reduced rotational power to the control shaft (24); and a speed-reducer accommodating case (43) accommodating the speed reducer (44). An input shaft of the speed reducer (44) which is connected to the actuator has a shaft center line extending along a horizontal direction, and at least a part of the input shaft is kept under a lubricating oil retained in the speed-reducer accommodating case (43). The input shaft of the speed reducer (44) is swung by a predetermined swing angle to avoid inadequate lubrication of the input shaft of the speed reducer (44), during an operating state where the engine compression ratio is maintained constant.
摘要翻译：提供了能够根据控制轴（24）的旋转位置改变发动机压缩比的可变压缩比机构（20）。减速器（44），其构造成使速度降低致动器的旋转动力，并将减速旋转动力传递到所述控制轴（24）; 以及容纳所述减速器（44）的减速器容纳壳体（43）。与致动器连接的减速器（44）的输入轴具有沿水平方向延伸的轴心线，并且输入轴的至少一部分保持在保持在减速器容纳壳体内的润滑油的下方（43）。减速器（44）的输入轴以预定的摆动角度摆动，以避免在发动机压缩比保持恒定的运行状态期间减速器（44）的输入轴的润滑不足。

9. 发明授权

US09169775B2 Multi-link internal combustion engine 有权
标题翻译：多连杆内燃机
公开(公告)号：US09169775B2
公开(公告)日：2015-10-27
申请号：US13855848
申请日：2013-04-03
申请人： Nissan Motor Co., Ltd.
发明人： Yusuke Takagi , Yoshiaki Tanaka , Katsutoshi Nakamura
IPC分类号： F02B75/32 , F01M11/00 , F02B41/04
CPC分类号： F02B75/32 , F01M11/0004 , F01M2011/0033 , F01M2011/005 , F02B41/04
摘要： A multi-link internal combustion engine generally includes a cylinder block, an oil pan mounted to the undersurface of the cylinder block to define a crank chamber, the oil pan being formed with a shallow bottom portion and a deep bottom portion for storing oil. The multi-link internal combustion engine further includes a multi-link, piston-crank mechanism disposed in the crank chamber, a pivotal link member of the piston-crank mechanism pivotal about a pivotal fulcrum located on the side of oil pan; and an oil guide wall provided on the shallow bottom portion in the crank chamber for guiding the oil displaced due to the movement of the pivotal link member to the side of deep bottom portion.
摘要翻译：多连杆内燃机通常包括气缸体，安装在气缸体的下表面以限定曲柄室的油盘，油盘形成有浅底部和用于储存油的深底部分。多连杆内燃机还包括设置在曲柄室中的多连杆活塞曲柄机构，活塞 - 曲柄机构的枢转连杆构件围绕位于油盘一侧的枢转支点枢转; 以及设置在曲柄室的浅底部上的引导壁，用于将由于枢转连杆构件的移动而移动的油引导到深底部的一侧。

10. 发明申请

US20170284289A1 Variable Compression Ratio Internal Combustion Engine 有权
公开(公告)号：US20170284289A1
公开(公告)日：2017-10-05
申请号：US15506899
申请日：2014-09-02
申请人： Nissan Motor Co., Ltd.
发明人： Ryosuke Hiyoshi , Katsutoshi Nakamura
IPC分类号： F02B75/04 , F02B75/32
CPC分类号： F02B75/04 , F02B75/045 , F02B75/32 , F02D15/02
摘要： A variable compression ratio internal combustion engine includes: a variable compression ratio mechanism arranged to vary an engine compression ratio in accordance with a rotation position of a first control shaft; an actuator arranged to vary and hold the rotation position of the first control shaft; and a link mechanism arranged to connect the actuator and the first control shaft, the link mechanism including; a second control shaft, a lever, a first arm portion, a first link pin, a second arm portion, and a second link pin, the first link pin having a diameter larger than a diameter of the second link pin.

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