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1. 发明授权

EP2905449B1 An internal combustion engine including variable compression ratio and a method of operating the engine 有权
标题翻译：一种包括可变压缩比的内燃机和一种操作发动机的方法
公开(公告)号：EP2905449B1
公开(公告)日：2018-05-09
申请号：EP14154745.5
申请日：2014-02-11
申请人： Gomecsys B.V.
发明人： De Gooijer, Lambertus Hendrik , Wagenaar, Sander , Wagenvoort, Willem-Constant
IPC分类号： F02B75/04
CPC分类号： F02B75/048
摘要： An internal combustion engine (1) including variable compression ratio comprises a crankcase (2) and a crankshaft (3) including a crankshaft axis (4). The crankshaft (3) has at least a central main portion (5), a crankpin (6) and a crankshaft web (7) located between the central main portion (5) and the crankpin (6). The crankshaft (3) is supported by the crankcase (2) and rotatable with respect thereto about the crankshaft axis (4). The engine (1) comprises at least a connecting rod (11) including a big end (10) and a small end (12), a piston (13) which is rotatably connected to the small end (12) and a crank member (8) that is rotatably mounted on the crankpin (6), and comprises at least a bearing portion (9) which is eccentrically disposed with respect to the crankpin (6). The bearing portion (9) has an outer circumferential wall which bears the big end (10) of the connecting rod (11) such that the connecting rod (11) is rotatably mounted on the bearing portion (9) of the crank member (8) via the big end (10). The engine (1) comprises a driving mechanism for driving the crank member (8) at half speed of the crankshaft (3) as seen from the crankcase (2). The driving mechanism comprises a control member (17) for varying the compression ratio, which is rotatable with respect to the crankcase (2) and drivably coupled to the crank member (8), but has a fixed position with respect to the crankcase (2) under operating conditions at fixed compression ratio. The rotational position of the control member (17) with respect to the crankcase (2) is adjustable by means of a hydraulic actuator (18), which comprises a hydraulic piston (20) that is drivably connected to the control member (17), a working chamber (21), a pump (23) and an oil supply line (25) through which the pump (23) and the working chamber (21) communicate.

2. 发明公开

EP2930329A1 An internal combustion engine including variable compression ratio 有权
标题翻译：具有可变压缩内燃机
公开(公告)号：EP2930329A1
公开(公告)日：2015-10-14
申请号：EP14163870.0
申请日：2014-04-08
申请人： Gomecsys B.V.
发明人： De Gooijer, Lambertus Hendrik , Wagenvoort, Willem-Constant , Wagenaar, Sander
IPC分类号： F02B75/04 , F16H1/00
CPC分类号： F02B75/048 , F02D15/02 , F16C3/06 , F16H3/46 , F16H9/26
摘要： An internal combustion engine including variable compression ratio, comprises a crankcase and a crankshaft including a crankshaft axis, wherein the crankshaft has at least a central main portion, a crankpin and a crankshaft web located between the central main portion and the crankpin. The crankshaft is supported by the crankcase and rotatable with respect thereto about the crankshaft axis. The engine also comprises a crank member being rotatably mounted on the crankpin, and comprising at least a bearing portion which is eccentrically disposed with respect to the crankpin. The crank member has an external crank member gear which meshes with an external drive shaft gear which is fixed to a drive shaft that extends through the crankshaft web and has a driven portion which is located at a side of the crankshaft web which is opposite to its side where the crankpin is located. The driven portion is drivably coupled via a first transmission to an intermediate member which is rotatably mounted to the crankshaft and rotatable with respect to the crankshaft about an intermediate member axis extending parallel to the crankshaft axis. The intermediate member is also drivably coupled to a control shaft portion of a control shaft via a second transmission which control shaft portion is located at axial distance of the driven portion of the drive shaft and the control shaft is rotatable with respect to the crankcase about the crankshaft axis, but which has a fixed rotational position with respect to the crankcase under operating conditions at fixed compression ratio. The first and second transmissions are configured such and the dimensions of the crank member gear and the drive shaft gear are selected such that under said operating conditions the crank member rotates at a rotation frequency with respect to the crankcase which is half of that of the crankshaft and in the same rotational direction as the crankshaft as seen from the crankcase.

3. 发明公开

EP2907986A1 A four-stroke internal combustion engine with variable compression ratio 有权
标题翻译： Viertakt-Verbrennungsmotor mit variablemVerdichtungsverhältnis
公开(公告)号：EP2907986A1
公开(公告)日：2015-08-19
申请号：EP14155560.7
申请日：2014-02-18
申请人： Gomecsys B.V.
发明人： De Gooijer, Lambertus Hendrik , Wagenvoort, Willem-Constant , Wagenaar, Sander
IPC分类号： F02B75/04
CPC分类号： F02B75/048 , F02B75/02 , F02B2075/027
摘要： A four-stroke internal combustion engine (1) with variable compression ratio, comprises a crankcase, a crankshaft (2) being rotatable with respect to the crankcase about a crankshaft axis (5), a connecting rod (9) including a big end (8) and a small end (10), wherein the connecting rod (9) has a centre line which lies in a connecting rod plane (18), a piston (11) being rotatably connected to the small end (10), wherein the piston (11) is movable in a direction parallel to a piston plane (17) in which the crankshaft axis (5) lies, a crank member (6) being rotatably mounted on the crankpin (3), and comprising a bearing portion (7) which is eccentrically disposed with respect to the crankpin (3), wherein the bearing portion (7) has an outer circumferential wall including a location of maximum eccentricity (P) which bears the big end (8) of the connecting rod (9) such that the connecting rod (9) is rotatably mounted on the bearing portion (7) of the crank member (6) via the big end (8). The bearing portion (7) has a centre line which lies in the connecting rod plane (18). Under operating conditions at or close to top dead centre of the piston (11) the angle between the connecting rod plane (18) and the piston plane (17) changes from a pre-angle before top dead centre to a post-angle after top dead centre. The crank member (6) rotates in the same direction as and at half speed of the crankshaft (2), as seen from the crankcase. The crank member (6) is provided with at least a crank member oil channel (19, 20) for transporting oil through the crank member (6) to an opening (21, 22) in the circumferential wall of the bearing portion (7), wherein the opening (21, 22) is located outside a closed bearing range (A-B) having a first edge (A) and a second edge (B).
摘要翻译：具有可变压缩比的四冲程内燃机（1）包括曲轴箱，可绕曲轴轴线（5）相对于曲轴箱旋转的曲轴（2），包括大端的连杆（9） 8）和小端（10），其中连杆（9）具有位于连杆平面（18）中的中心线，活塞（11）可旋转地连接到小端（10），其中，活塞（11）能够在平行于曲轴轴线（5）所在的活塞平面（17）的方向上移动，曲柄构件（6）可旋转地安装在曲柄销（3）上，并且包括轴承部分），其中所述轴承部分（7）具有包括连接杆（9）的大端（8）的最大偏心量（P）的位置的外周壁，使得连杆（9）经由大端（8）可旋转地安装在曲柄部件（6）的轴承部分（7）上。轴承部分（7）具有位于连杆平面（18）中的中心线。在活塞（11）的上止点处或接近活塞（11）的操作条件下，连杆平面（18）与活塞平面（17）之间的角度从上死点之前的角度变化到顶后的后角死中心曲柄构件（6）在与曲轴箱（2）相同的方向与曲轴（2）的半速方向旋转。曲柄构件（6）至少设有用于将油通过曲柄构件（6）输送到轴承部分（7）的周壁中的开口（21,22）的曲柄构件油通道（19,20），其中所述开口（21,22）位于具有第一边缘（A）和第二边缘（B）的封闭轴承范围（AB）的外侧。

4. 发明公开

EP3808955A1 AN INTERNAL COMBUSTION ENGINE WITH VARIABLE COMPRESSION RATIO 审中-公开
公开(公告)号：EP3808955A1
公开(公告)日：2021-04-21
申请号：EP19203268.8
申请日：2019-10-15
申请人： Gomecsys B.V.
发明人： De Gooijer, Lambertus Hendrik
IPC分类号： F02B75/04 , F01L1/344
摘要： An internal combustion engine (1) with variable compression ratio comprises an engine block (2), a crankshaft (3) having at least a crankpin (4), a crank arm (5) and a main portion (6), wherein the main portion (6) is supported by the engine block (2) and the crankshaft (3) is rotatable with respect to the engine block (2) about a crankshaft axis (CA), a connecting rod (13) including a big end which is drivably coupled to the crankpin via a link (11), which link (11) is rotatable with respect to the big end about a centreline of the big end and to the crankpin (4) about a centreline of the crankpin (4), an adjusting shaft (21) which is rotatable with respect to the engine block (2) and drivably coupled to the link (11) such that upon turning the adjusting shaft (21) the link (11) turns about the crankpin at a virtual standstill of the engine (1) so as to vary its compression ratio, and a drive unit (23) for driving an input portion (22) of the adjusting shaft (21) so as to turn the adjusting shaft (21) with respect to the engine block (2). The internal combustion engine (1) comprises a friction coupling (25', 27, 29, 43) which is functionally located between the drive unit (23) and the input portion (22) of the adjusting shaft (21), wherein the friction coupling is adapted such that in case of exceeding a predetermined torque on the adjusting shaft (21) caused by the connecting rod (13), the friction coupling slips.

5. 发明公开

EP3719339A1 AN APPARATUS INCLUDING AN ADJUSTING SYSTEM FOR ADJUSTING A ROTATIONAL POSITION OF A SHAFT WITH RESPECT TO A SHAFT HOLDING MEMBER 审中-公开
公开(公告)号：EP3719339A1
公开(公告)日：2020-10-07
申请号：EP19170054.1
申请日：2019-04-18
申请人： Gomecsys B.V.
发明人： De Gooijer, Lambertus Hendrik
IPC分类号： F16D27/08 , F02B75/04 , F16C3/28
摘要： An apparatus (1) includes an adjusting system for adjusting a rotational position of a shaft with respect to a shaft holding member, comprising a frame (2), a shaft (15) which is rotatably supported by the frame (2), a shaft holding member (19, 21) which is linked to the frame (2) and which is connectable to the shaft (15), wherein the shaft (15) is rotatable with respect to the shaft holding member (19, 21) about a centreline (5) of the shaft (15), wherein the adjusting system is provided with a driving source (6, 9) for applying a torque on the shaft (15), a friction coupling (F) for connecting the shaft (15) and the shaft holding member (19, 21) to each other and blocking the shaft (15) and the shaft holding member (19, 21) with respect to each other in rotational direction of the shaft (15), a spring (22) for applying a predetermined force on the friction coupling (F) so as to create a predetermined friction force at the friction coupling (F), an actuator (17) being in engagement with the spring (22), an electromagnet (20) for exerting a force on the actuator (17), wherein the spring (22) and the actuator (17) are adapted such that under operating conditions the force on the friction coupling (F), caused by the spring (22), in a non-operated condition of the electromagnet (20) is higher than a force on the friction coupling (F) in an active condition of the electromagnet (20).

6. 发明公开

EP2905448A1 An internal combustion engine including variable compression ratio and a method of operating the engine 审中-公开
标题翻译： Verbrennungsmotor mit variablemVerdichtungsverhältnisund Betriebsverfahren des Motors
公开(公告)号：EP2905448A1
公开(公告)日：2015-08-12
申请号：EP14154720.8
申请日：2014-02-11
申请人： Gomecsys B.V.
发明人： De Gooijer, Lambertus Hendrik , Wagenvoort, Willem-Constant , Wagenaar, Sander
IPC分类号： F02B75/04 , F16H1/28
CPC分类号： F02B75/048
摘要： An internal combustion engine (1) including variable compression ratio comprises a crankcase, a crankshaft (3) including a crankshaft axis (4), wherein the crankshaft (3) has at least a central main portion (5), a crankpin (6) and a crankshaft web (7) located between the central main portion (5) and the crankpin (6). The crankshaft (3) is supported by the crankcase and rotatable with respect thereto about the crankshaft axis (4). The engine comprises at least a connecting rod including a big end and a small end, a piston being rotatably connected to the small end, and a crank member (8) which is rotatably mounted on the crankpin (6), and comprises at least a bearing portion which is eccentrically disposed with respect to the crankpin (6), and has an outer circumferential wall which bears the big end of the connecting rod such that the connecting rod is rotatably mounted on the bearing portion of the crank member (8) via the big end. The engine also comprises a driving mechanism (2) for rotating the crank member (8) with respect to the crankshaft (3), which comprises a drive shaft (9) that extends concentrically through the central main portion (5). The drive shaft (9) is drivably coupled to the crank member (8) via a transmission (10) at a side of the crankshaft web (7) where the crankpin (6) is located. At the opposite side of the crankshaft web (7) the drive shaft (9) is drivably coupled to the crankshaft (3) via an external satellite gear (13) that is rotatably mounted to the crankshaft (3) and rotatable with respect to the crankshaft (3) about a satellite axis extending parallel to the crankshaft axis (4). The satellite gear (13) meshes with an internal ring gear (14) having a centre line that coincides with the crankshaft axis (4) and with an external sun gear (15) that is fixed to the drive shaft (9). The driving mechanism (2) is adapted such that under operating conditions the crank member (8) rotates at a rotation frequency with respect to the crankcase which is half of that of the crankshaft (3).
摘要翻译：包括可变压缩比的内燃机（1）包括曲轴箱，包括曲轴轴线（4）的曲轴（3），其中曲轴（3）至少具有中心主体部分（5），曲柄销（6）以及位于中心主体部分（5）和曲柄销（6）之间的曲轴腹板（7）。曲轴（3）由曲轴箱支撑并相对于曲轴轴线（4）可旋转。发动机至少包括一个包括一个大端和一个小端的连接杆，一个可旋转地连接到该小端的活塞，以及一个可旋转地安装在曲柄销6上的曲柄件，轴承部分，其相对于曲柄销（6）偏心地设置，并且具有承载连杆的大端的外周壁，使得连杆可旋转地安装在曲柄构件（8）的轴承部分上，经由大端。发动机还包括用于相对于曲轴（3）旋转曲柄构件（8）的驱动机构（2），该驱动机构包括同心地延伸穿过中心主体部分（5）的驱动轴（9）。驱动轴（9）通过位于曲轴销（6）所在的曲轴腹板（7）侧的变速器（10）可驱动地联接到曲柄构件（8）。在曲轴腹板（7）的相对侧，驱动轴（9）通过可旋转地安装在曲轴（3）上并可相对于曲轴腹板（3）旋转的外部卫星齿轮（13）可驱动地联接到曲轴（3）围绕平行于曲轴轴线（4）延伸的卫星轴的曲轴（3）。卫星齿轮（13）与具有与曲轴轴线（4）重合的中心线和固定到驱动轴（9）的外部太阳齿轮（15）的内齿圈（14）啮合。驱动机构（2）适于使得在操作条件下，曲柄构件（8）相对于曲轴（3）曲轴的一半的旋转频率旋转。

7. 发明公开

EP2902603A1 An internal combustion engine including variable compression ratio 审中-公开
标题翻译：内燃机包括可变压缩比
公开(公告)号：EP2902603A1
公开(公告)日：2015-08-05
申请号：EP14153494.1
申请日：2014-01-31
申请人： Gomecsys B.V.
发明人： De Gooijer, Lambertus Hendrik , Wagenvoort, Willem-Constant , Wagenaar, Sander
IPC分类号： F02B75/04
CPC分类号： F02B75/048 , F01B9/042
摘要： An internal combustion engine (1) including variable compression ratio comprises a crankcase (3) and a crankshaft (4) including a crankshaft axis (5) and at least a central main portion (6), a crankpin (7) and a crankshaft web (8) located between the central main portion (6) and the crankpin (7). The crankshaft (4) is supported by the crankcase (3) and rotatable with respect thereto about the crankshaft axis (5). The engine has at least a connecting rod including a big end and a small end, a piston which is rotatably connected to the small end and a crank member (9) which is rotatably mounted on the crankpin (7). The crank member comprises at least a bearing portion which is eccentrically disposed with respect to the crankpin (7) and has an outer circumferential wall which bears the big end of the connecting rod such that the connecting rod is rotatably mounted on the bearing portion of the crank member (9) via the big end. The engine also comprises a driving mechanism (2) for rotating the crank member (9) at a rotation frequency with respect to the crankcase (3) which is substantially half of that of the crankshaft (4) as seen from the crankcase (3). The driving mechanism (2) comprises a drive shaft (10) that extends concentrically through the central main portion (6). The drive shaft (10) is drivably coupled to the crank member (9) via a transmission (11) at a side of the crankshaft web (8) where the crankpin (7) is located. At the opposite side of the crankshaft web (8) the drive shaft (10) is drivably coupled to the crankshaft (4) via a lockable coupling (22) for adjusting the mutual rotational position of the crank member (9) and the crankshaft (4) at any rotational position of the crank member (9) with respect to the crankcase (3). The engine includes a controller for controlling the coupling (22) such that in unlocked condition of the coupling (22) said mutual rotational position is adjustable.
摘要翻译：包括可变压缩比的内燃机（1）包括曲轴箱（3）和曲轴（4），所述曲轴包括曲轴轴线（5）和至少中心主部分（6），曲柄销（7）和曲轴腹板（8）位于中心主部分（6）和曲柄销（7）之间。曲轴（4）由曲轴箱（3）支撑并且可相对于曲轴（5）绕其旋转。发动机具有至少一个包括大端和小端的连杆，一个可转动地连接到小端的活塞和一个可转动地安装在曲柄销（7）上的曲柄部件（9）。曲柄部件包括至少一个轴承部分，该部分相对于曲柄销（7）偏心地设置，并且具有承载连杆的大端的外周壁，使得连杆可旋转地安装在轴承部分的轴承部分上曲柄构件（9）通过大端。发动机还包括驱动机构（2），用于相对于从曲轴箱（3）观察到的大致为曲轴（4）的一半的曲轴箱（3）的旋转频率旋转曲轴构件（9）。驱动机构（2）包括同心地延伸穿过中央主体部分（6）的驱动轴（10）。驱动轴（10）在曲轴销（8）的曲柄销（7）所在的一侧经由变速器（11）与曲柄构件（9）驱动连接。在曲轴腹板（8）的相对侧，驱动轴（10）经由可锁定联接器（22）可驱动地联接到曲轴（4），以调节曲柄构件（9）和曲轴 4）在曲柄部件（9）相对于曲轴箱（3）的任何旋转位置处。发动机包括用于控制联接件（22）的控制器，使得在联接件（22）的解锁状态下，所述相互旋转位置是可调整的。

8. 发明公开

EP4006323A1 AN INTERNAL COMBUSTION ENGINE INCLUDING VARIABLE COMPRESSION RATIO 有权
公开(公告)号：EP4006323A1
公开(公告)日：2022-06-01
申请号：EP20210071.5
申请日：2020-11-26
申请人： Gomecsys B.V.
发明人： De Gooijer, Lambertus Hendrik , Wagenaar, Sander
IPC分类号： F02B75/04
摘要： An internal combustion engine (1) including variable compression ratio comprises a crankshaft (2) being rotatable about a crankshaft axis (3) and having a crankpin (4), wherein the crankshaft axis (3) and a centreline of the crankpin (4) span a crank plane, a connecting rod (4), a piston (8) being rotatably connected to a distal end portion of the connecting rod (4), and an eccentric member (5) being rotatably mounted on the crankpin (4) and comprising a bearing portion (6) having an outer circumferential wall which bears a proximal end portion of the connecting rod (4) such that the connecting rod (4) is rotatably mounted on the bearing portion (6). The bearing portion (9) is eccentrically disposed with respect to the crankpin (4). The eccentric member (5) is provided with an eccentric member gear (9) which is drivably coupled to a gear train (10) for rotating the eccentric member (5) with respect to the crankpin (4). The gear train (10) comprises a balancing gear (11, 19) which is rotatably mounted to the crankshaft (2) and rotates with respect to the crankshaft (2) about a balancing gear axis at the same speed as the eccentric member gear (9) under operating conditions. The crankshaft axis (3) and the balancing gear axis span a balancing gear plane. The balancing gear (11) has an eccentrical centre of gravity (11a) which is located such that under operating conditions it causes a counter torque against a torque that is exerted by the eccentric member gear (9) onto the balancing gear (11, 19) due to an inertial force on the eccentric member (5).

9. 发明授权

EP2930329B1 An internal combustion engine including variable compression ratio 有权
标题翻译： Verbrennungsmotor mit variabler Verdichtung
公开(公告)号：EP2930329B1
公开(公告)日：2016-12-28
申请号：EP14163870.0
申请日：2014-04-08
申请人： Gomecsys B.V.
发明人： De Gooijer, Lambertus Hendrik , Wagenvoort, Willem-Constant , Wagenaar, Sander
IPC分类号： F02B75/04 , F16H1/00
CPC分类号： F02B75/048 , F02D15/02 , F16C3/06 , F16H3/46 , F16H9/26
摘要： An internal combustion engine including variable compression ratio, comprises a crankcase and a crankshaft including a crankshaft axis, wherein the crankshaft has at least a central main portion, a crankpin and a crankshaft web located between the central main portion and the crankpin. The crankshaft is supported by the crankcase and rotatable with respect thereto about the crankshaft axis. The engine also comprises a crank member being rotatably mounted on the crankpin, and comprising at least a bearing portion which is eccentrically disposed with respect to the crankpin. The crank member has an external crank member gear which meshes with an external drive shaft gear which is fixed to a drive shaft that extends through the crankshaft web and has a driven portion which is located at a side of the crankshaft web which is opposite to its side where the crankpin is located. The driven portion is drivably coupled via a first transmission to an intermediate member which is rotatably mounted to the crankshaft and rotatable with respect to the crankshaft about an intermediate member axis extending parallel to the crankshaft axis. The intermediate member is also drivably coupled to a control shaft portion of a control shaft via a second transmission which control shaft portion is located at axial distance of the driven portion of the drive shaft and the control shaft is rotatable with respect to the crankcase about the crankshaft axis, but which has a fixed rotational position with respect to the crankcase under operating conditions at fixed compression ratio. The first and second transmissions are configured such and the dimensions of the crank member gear and the drive shaft gear are selected such that under said operating conditions the crank member rotates at a rotation frequency with respect to the crankcase which is half of that of the crankshaft and in the same rotational direction as the crankshaft as seen from the crankcase.
摘要翻译：包括可变压缩比的内燃机包括曲轴箱和包括曲轴轴线的曲轴，其中曲轴至少具有中心主要部分，曲柄销和位于中心主体部分和曲柄销之间的曲轴腹板。曲轴由曲轴箱支撑并相对于曲轴轴线可旋转。发动机还包括可旋转地安装在曲柄销上的曲柄构件，并且至少包括相对于曲柄销偏心设置的轴承部分。曲柄构件具有与外部驱动轴齿轮啮合的外部曲柄构件齿轮，该外部驱动轴齿轮固定到驱动轴，该驱动轴延伸穿过曲轴腹板并且具有被驱动部分，该从动部分位于曲轴腹板的与其相对的一侧曲柄销所在的一侧。被驱动部分通过第一传动装置可驱动地联接到中间构件，中间构件可旋转地安装到曲轴上并且可相对于曲轴围绕平行于曲轴轴线延伸的中间构件轴线旋转。中间构件还经由第二变速器可驱动地联接到控制轴的控制轴部分，控制轴部分位于驱动轴的从动部分的轴向距离处，并且控制轴可相对于曲轴箱旋转曲轴轴线，但是在固定压缩比的操作条件下相对于曲轴箱具有固定的旋转位置。第一和第二变速器构造成使得曲柄构件齿轮和驱动轴齿轮的尺寸被选择成使得在所述操作条件下，曲柄构件相对于曲轴箱的旋转频率旋转，曲轴箱是曲轴的一半并且与曲轴箱相同的旋转方向。

10. 发明公开

EP2905449A1 An internal combustion engine including variable compression ratio and a method of operating the engine 有权
标题翻译：一种包括可变压缩比的内燃机和一种操作发动机的方法
公开(公告)号：EP2905449A1
公开(公告)日：2015-08-12
申请号：EP14154745.5
申请日：2014-02-11
申请人： Gomecsys B.V.
发明人： De Gooijer, Lambertus Hendrik , Wagenaar, Sander , Wagenvoort, Willem-Constant
IPC分类号： F02B75/04
CPC分类号： F02B75/048
摘要： An internal combustion engine (1) including variable compression ratio comprises a crankcase (2) and a crankshaft (3) including a crankshaft axis (4). The crankshaft (3) has at least a central main portion (5), a crankpin (6) and a crankshaft web (7) located between the central main portion (5) and the crankpin (6). The crankshaft (3) is supported by the crankcase (2) and rotatable with respect thereto about the crankshaft axis (4). The engine (1) comprises at least a connecting rod (11) including a big end (10) and a small end (12), a piston (13) which is rotatably connected to the small end (12) and a crank member (8) that is rotatably mounted on the crankpin (6), and comprises at least a bearing portion (9) which is eccentrically disposed with respect to the crankpin (6). The bearing portion (9) has an outer circumferential wall which bears the big end (10) of the connecting rod (11) such that the connecting rod (11) is rotatably mounted on the bearing portion (9) of the crank member (8) via the big end (10). The engine (1) comprises a driving mechanism for driving the crank member (8) at half speed of the crankshaft (3) as seen from the crankcase (2). The driving mechanism comprises a control member (17) for varying the compression ratio, which is rotatable with respect to the crankcase (2) and drivably coupled to the crank member (8), but has a fixed position with respect to the crankcase (2) under operating conditions at fixed compression ratio. The rotational position of the control member (17) with respect to the crankcase (2) is adjustable by means of a hydraulic actuator (18), which comprises a hydraulic piston (20) that is drivably connected to the control member (17), a working chamber (21), a pump (23) and an oil supply line (25) through which the pump (23) and the working chamber (21) communicate.
摘要翻译：包括可变压缩比的内燃机（1）包括曲轴箱（2）和包括曲轴轴线（4）的曲轴（3）。曲轴（3）至少具有位于中心主部（5）和曲柄销（6）之间的中心主部（5），曲柄销（6）和曲轴腹板（7）。曲轴（3）由曲轴箱（2）支撑并且可相对于曲轴（4）绕其旋转。发动机（1）包括至少一个包括大端部（10）和小端部（12）的连杆（11），可旋转地连接到小端部（12）的活塞（13）以及曲柄部件 8），其可旋转地安装在曲柄销（6）上，并且包括至少一个相对于曲柄销（6）偏心布置的轴承部分（9）。轴承部分（9）有一个外圆周壁，它支承着连杆（11）的大端（10），使得连杆（11）可转动地安装在曲柄部件（8）的轴承部分（9））通过大端（10）。发动机（1）包括驱动机构，用于从曲轴箱（2）看曲轴（3）的一半速度驱动曲轴部件（8）。驱动机构包括用于改变压缩比的控制部件（17），该压缩比可相对于曲轴箱（2）旋转并可驱动地连接到曲柄部件（8），但相对于曲轴箱（2）具有固定位置）在固定压缩比的操作条件下。控制构件17相对于曲轴箱2的旋转位置可通过液压致动器18调节，该液压致动器18包括可驱动地连接到控制构件17的液压活塞20，工作室（21），泵（23）和供油管路（25），泵（23）和工作室（21）通过该供油管路连通。

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