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公开(公告)号：EP3196439B1
公开(公告)日：2018-05-30
申请号：EP14902175.0
申请日：2014-09-17
发明人： KURODA, Masashi , TANABE, Takashi
CPC分类号： F01M1/08 , F01M1/06 , F01M9/108 , F01M2001/066 , F01P3/08 , F01P7/14 , F01P2007/146 , F02B75/045 , F02B75/048 , F02B75/32 , F02D15/02
摘要： An oil jet (45) is provided for each cylinder at a lower part of a cylinder block (5). The oil jet (45) has a first injection nozzle (46) that injects lubricating oil toward a back side of a positon (2) during opening of a pressure control valve (51A) and a second injection nozzle (47) that injects lubricating oil toward a connection part between a lower link (7) and a control link (9) during opening of a pressure control valve (51B). By this configuration, it is possible to continuously supply the lubricating oil to the connection part between the lower link (7) and the control link (9).
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公开(公告)号：EP2463498B1
公开(公告)日：2016-07-20
申请号：EP10799684.5
申请日：2010-06-01
CPC分类号： F16C3/14 , F02B75/045 , F02B75/048 , F02F7/0019 , F16C9/04 , F16C33/1055 , Y10T74/2181 , Y10T74/2185
摘要： In a crankshaft of an internal combustion engine wherein a crankthrow is shortened by the use of a multi-link mechanism, a stress concentration caused by a torsional torque in the vicinity of a pin-side opening (21) of an oil passage (20), which is open at the outer peripheral surface of a crankpin, is alleviated. The crankthrow from the axis of a main journal (2) to the axis of the crankpin (3) is set shorter than one-half of a piston stroke. The oil passage (20) is formed to supply lubricating oil to a bearing portion of the crankpin (3). The pin-side opening (21) of the oil passage (20), which is open at the outer peripheral surface of the crankpin (3), is formed in ranges other than angular ranges of 0°, 90°, 180°, and 270° with respect to a reference line (X1) extending from the axis of the main journal (2) toward the axis of the crankpin (3) in a decentering direction (X) of the crankpin.
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公开(公告)号：EP4215724A1
公开(公告)日：2023-07-26
申请号：EP20954022.8
申请日：2020-09-15
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 (31 b) 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.
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公开(公告)号：EP3040535B1
公开(公告)日：2019-02-20
申请号：EP14841262.0
申请日：2014-07-29
发明人： OKUMA, Satoru , TANABE, Takashi , MOTEKI, Katsuya
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公开(公告)号：EP3040527B1
公开(公告)日：2018-08-22
申请号：EP14841101.0
申请日：2014-07-29
发明人： OKUMA, Satoru , TANABE, Takashi , MOTEKI, Katsuya
CPC分类号： F01M1/06 , F01M1/08 , F01M2001/083 , F01P3/08 , F02B75/04 , F02B75/045 , F02B75/32 , F02D15/02
摘要： When the compression ratio of a variable compression ratio internal combustion engine (10) is set at a low compression ratio, a lubricating oil ejected from a lower link oil passage (25) is reflected by an upper link (11) at the piston top dead center, and supplied to a cylinder inside wall surface on the side on which a control link (15) is located in a view as viewed in the axial direction of the crank shaft. When the compression ratio of the variable compression ratio internal combustion engine (10) is set at a high compression ratio, the lubricating oil ejected from lower link oil passage (25) is reflected by upper link (11) at the piston top dead center, and supplied to the back side of the piston crown.
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公开(公告)号：EP3246543A1
公开(公告)日：2017-11-22
申请号：EP15877824.1
申请日：2015-01-15
发明人： TANABE, Takashi , MOTEKI, Katsuya
CPC分类号： F02B75/045 , F01M1/02 , F01M1/06 , F01M2001/062 , F02B75/04 , F02B75/32 , F16C3/14 , F16C3/30 , F16C11/02
摘要： A multi-link piston crank mechanism includes a lower link (7) having one end side to which an input load F1 due to a combustion load is acted. The lower link includes a bifurcated one end side protruding piece portion (13) and a bifurcated other end side protruding piece portion (14) which are positioned on both sides of a crank pin bearing portion (12). The bifurcated one end side protruding piece portion sandwiches the other end of an upper link (8). The bifurcated other end side protruding piece portion sandwiches the other end of a control link 9. A thickness of a central portion (12a) of the crank pin bearing portion (12) in a crank shaft axis direction is larger at a portion positioned on the one end side of the lower link (7) than at a portion positioned on the other end side of lower link (7). A thickness of a control link other end portion (32) is larger than a thickness of an upper link other end portion (24).
摘要翻译： 多连杆活塞曲柄机构包括下连杆（7），该下连杆（7）的一端侧由于燃烧负载而作用有输入载荷F1。 下连杆包括位于曲柄销轴承部分（12）两侧的分叉的一端侧凸起部分（13）和分叉的另一端侧凸起部分（14）。 分叉的一端侧突片部分夹持上连杆（8）的另一端。 分叉另一端侧突片部分夹持控制连杆9的另一端。曲柄轴轴承部分（12）的中心部分（12a）在曲轴轴线方向上的厚度在位于 比位于下连杆（7）的另一端侧的部分处的下连杆（7）的一端侧更小。 控制连杆另一端部（32）的厚度大于上连杆另一端部（24）的厚度。
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公开(公告)号：EP3040535A1
公开(公告)日：2016-07-06
申请号：EP14841262.0
申请日：2014-07-29
发明人： OKUMA, Satoru , TANABE, Takashi , MOTEKI, Katsuya
CPC分类号： F02B75/32 , F02B75/045 , F16C7/00 , F16C9/04 , F16C11/02 , F16C23/041 , F16C2360/22
摘要： A lower link (13) is formed such that outer circumferential sides of both end portions of a crankpin through-hole (21) are stiffer than a center portion of the crankpin through-hole (21), i.e. a bifurcation portion of a bifurcated shape thereof. The both end portions of the crankpin through-hole (21) are formed such that inner circumferential surfaces (22a) of the both end portions are curved at a predetermined curvature in an axial direction of a crankshaft with no load input on the lower link (13). Moreover, the center portion of the crankpin through-hole (21) is formed such that an inner circumferential surface (22b) thereof is located inward of the inner circumferential surfaces (22a) of the both end portions and is straight in the axial direction of the crankshaft with no load input on the lower link (13).
摘要翻译： 下连杆（13）形成为使得曲柄销通孔（21）的两个端部的外周侧比曲柄销通孔（21）的中央部分更刚性，即分叉形状的分叉部分 它们。 曲柄销贯通孔21的两端部形成为两端部的内周面22a在曲轴的轴向上以规定的曲率弯曲， 13）。 另外，曲柄销贯通孔21的中央部形成为其内周面22b位于两端部的内周面22a的内侧且沿轴向直立， 下连杆（13）上没有负载输入的曲轴。
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公开(公告)号：EP3040527A1
公开(公告)日：2016-07-06
申请号：EP14841101.0
申请日：2014-07-29
发明人： OKUMA, Satoru , TANABE, Takashi , MOTEKI, Katsuya
CPC分类号： F01M1/06 , F01M1/08 , F01M2001/083 , F01P3/08 , F02B75/04 , F02B75/045 , F02B75/32 , F02D15/02
摘要： When the compression ratio of a variable compression ratio internal combustion engine (10) is set at a low compression ratio, a lubricating oil ejected from a lower link oil passage (25) is reflected by an upper link (11) at the piston top dead center, and supplied to a cylinder inside wall surface on the side on which a control link (15) is located in a view as viewed in the axial direction of the crank shaft. When the compression ratio of the variable compression ratio internal combustion engine (10) is set at a high compression ratio, the lubricating oil ejected from lower link oil passage (25) is reflected by upper link (11) at the piston top dead center, and supplied to the back side of the piston crown.
摘要翻译： 当可变压缩比内燃机（10）的压缩比设定为低压缩比时，从下连杆油路（25）喷射的润滑油在活塞上死点处被上连杆（11）反射 从曲柄轴的轴向观察时，被供给到控制连杆15所在侧的缸内壁面。 当可变压缩比内燃机10的压缩比设定为高压缩比时，从下连杆油路25喷出的润滑油被活塞上止点的上连杆11反射， 并供应到活塞顶的后侧。
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公开(公告)号：EP3805537A1
公开(公告)日：2021-04-14
申请号：EP18922020.5
申请日：2018-06-07
发明人： TOJO, Tomoya , TANABE, Takashi , KOBAYASHI, Makoto
摘要： A lower link (7) is formed of two components by being divided at a dividing surface (14) including the central axis of a crank pin bearing portion (11), the two components including a lower link upper (15) with an upper pin bearing portion (12) and a lower link lower (16) with a control pin bearing portion (13). The dividing surface (14) includes a first dividing surface (14a) located more on the upper link side than the crank pin bearing portion (11) and a second dividing surface (14b) located more on the control link side than the crank pin bearing portion (11). In the lower link (7), the first dividing surface (14a) has a surface roughness larger than a surface roughness of the second dividing surface (14b).
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公开(公告)号：EP3037642B1
公开(公告)日：2018-01-17
申请号：EP14837631.2
申请日：2014-07-30
CPC分类号： F16C7/023 , F01M11/02 , F01M2001/062 , F01M2011/027 , F02B41/04 , F02B75/04 , F02B75/045 , F16C3/14 , F16C3/16 , F16C3/18 , F16J1/14
摘要： An opening (35a) on one end side of a pin-boss oil passage (35) opens to the inner circumferential surface of a pin boss part (14) of an upper link (3), while an opening (35b) on the other end side thereof opens to the outer circumferential surface of the pin boss part (14) of the upper link (3). A lower-link oil passage (36) has a one-end-side opening (36a) structured to open to a pin-boss-facing surface (33) of the lower link (2) facing the outer circumferential surface of the pin boss part (14) of the upper link (3) and its other-end-side opening (36b) structured to open to a crankpin bearing surface (37). The lower-link oil passage (36) is configured to point, at a prescribed crankangle, to a specified end edge of end edges of the other-end-side opening (35b) of the pin-boss oil passage (35), the specified end edge facing one end side of the upper link (3).
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