Piston crank mechanism of reciprocating internal combustion engine
    3.
    发明公开
    Piston crank mechanism of reciprocating internal combustion engine 有权
    活塞曲柄机构为一种内燃机

    公开(公告)号:EP1180588A3

    公开(公告)日:2003-04-02

    申请号:EP01119056.8

    申请日:2001-08-07

    摘要: A piston crank mechanism of an internal combustion engine includes an upper link connected to a piston, a lower link connected to both the upper link and a crankpin, and a control link through which the lower link is linked to an eccentric cam of a control shaft to restrict the degree of freedom of the lower link. By varying the angular position of the eccentric cam with respect to the control-shaft axis, the center of oscillating motion of the control link varies, thus varying a compression ratio. The center of gravity of the lower link, determined by an equivalent inertia weight obtained by adding weights of connecting pins and weights of the upper-link boss-shaped end and the control-link boss-shaped end connected to the lower link via the respective connecting pins to the lower-link self-weight, is situated closer to the center of the crankpin.

    Multi-link variable compression ratio engine
    4.
    发明公开
    Multi-link variable compression ratio engine 有权
    Mehrfachverbindungs-Motor mit variablemVerdichtungsverhältnis

    公开(公告)号:EP2055914A3

    公开(公告)日:2012-03-28

    申请号:EP08167313.9

    申请日:2008-10-22

    IPC分类号: F02B75/04

    CPC分类号: F02B75/048

    摘要: A multi-link variable compression ratio engine is provided with a crankshaft (12), a piston (11), a control shaft (20), a linkage, a motor (35) and a reduction mechanism. The crankshaft (12) moves the piston (11) within an engine cylinder. The control shaft (20) has an eccentric axle eccentric relative to its center-axis. The linkage operatively connects the piston to the crankshaft and the crankshaft (12) to the eccentric axle of the control shaft (20). The motor (35) rotates the control shaft (20) so a top-dead-center position of the piston (11) changes to vary compression ratios by changing the positions of the eccentric axle and the linkage. The reduction mechanism (30) couples the motor (35) to the control shaft (20) to transmit a reduced rotation of the motor to the control shaft so a reduction ratio of a rotation angle of the motor to a rotation angle of the control shaft is less at high-compression ratios than at intermediate compression ratios.

    摘要翻译: 多连杆可变压缩比发动机设置有曲轴(12),活塞(11),控制轴(20),联动装置,电动机(35)和减速机构。 曲轴(12)将发动机气缸内的活塞(11)移动。 控制轴(20)具有相对于其中心轴偏心的偏心轴。 连杆将活塞与曲轴和曲轴(12)操作地连接到控制轴(20)的偏心轴。 电机(35)使控制轴(20)旋转,使得活塞(11)的上止点位置改变以通过改变偏心轴和连杆的位置来改变压缩比。 减速机构30将电动机35与控制轴20连结,将电动机的转动减小到控制轴,使得电动机的旋转角度与控制轴的旋转角度的减小比 在高压缩比下比在中间压缩比下更小。

    Reciprocating internal combustion engine
    5.
    发明公开
    Reciprocating internal combustion engine 有权
    往复式内燃机

    公开(公告)号:EP1279798A3

    公开(公告)日:2003-12-10

    申请号:EP02015285.6

    申请日:2002-07-09

    摘要: In a rockable-cam equipped reciprocating internal combustion engine, a rockable cam is rotatably fitted on the outer periphery of an intake-valve drive shaft that is rotatable in synchronism with rotation of a crankshaft. The rockable cam oscillates within predetermined limits during rotation of the intake-valve drive shaft so as to directly push an intake-valve lifter. As viewed from an axial direction of the crankshaft, an axis of the intake-valve drive shaft is offset from a centerline of the intake-valve stem in a first direction that is normal to both the cylinder centerline and the crankshaft axis and directed from the cylinder centerline to the intake valve side. The crankshaft axis is also offset from the cylinder centerline in the first direction.

    摘要翻译: 在配备有可摆动凸轮的往复式内燃机中,可摆动凸轮可旋转地装配在与曲轴的旋转同步旋转的进气门驱动轴的外周上。 在进气阀驱动轴旋转期间,可摆动凸轮在预定限度内摆动,以便直接推动进气阀挺杆。 当从曲轴的轴向观察时,进气门驱动轴的轴线从与进气门杆的中心线偏离的第一方向垂直于气缸中心线和曲轴轴线并且从第一方向 气缸中心线到进气门侧。 曲轴轴线也在第一方向上偏离汽缸中心线。

    Internal combustion engine
    7.
    发明公开
    Internal combustion engine 有权
    内燃机

    公开(公告)号:EP1703091A2

    公开(公告)日:2006-09-20

    申请号:EP06005090.3

    申请日:2006-03-13

    IPC分类号: F01L13/00

    摘要: In an internal combustion engine, a variable lift and/or operating angle mechanism variably controls a lift and/or operating angle of an exhaust valve in accordance with a driving condition of the engine, a variable phase mechanism variably controls a phase of a lift center angle of the exhaust valve in accordance with the driving condition of the engine, a present position detecting section detects a present operating position of each of the variable lift and/or operating angle mechanism and variable phase mechanism, and a controlling section controls one of the variable lift and/or operating angle mechanism and the variable phase mechanism which operates normally in a direction in which an in-cylinder residual gas quantity becomes minimum when the other of the variable lift and/or operating angle mechanism and the variable phase mechanism has failed.

    摘要翻译: 在内燃机中,可变升程和/或工作角机构根据发动机的驱动状态可变地控制排气门的升程和/或工作角,可变相位机构可变地控制升程中心的相位 根据发动机的驱动状态,排气阀的角度,当前位置检测部分检测可变升程和/或操作角度机构和可变相位机构中的每一个的当前操作位置,并且控制部分控制 可变升程和/或操作角机构以及当可变升程和/或操作角机构和可变相机构中的另一个失效时缸内残留气体量变得最小的方向上正常操作的变相机构 。

    Variable compression ratio mechanism for reciprocating internal combustion engine
    8.
    发明公开
    Variable compression ratio mechanism for reciprocating internal combustion engine 有权
    机制变量Verdichtungsverhältniseiner Brennkraftmaschine

    公开(公告)号:EP1247960A3

    公开(公告)日:2003-06-11

    申请号:EP02007752.5

    申请日:2002-04-05

    IPC分类号: F02B75/04

    CPC分类号: F02B75/048 F02B75/045

    摘要: In a variable compression ratio mechanism for an internal combustion engine employing an upper link, a lower link, and a control link, the lower link includes a crankpin bearing portion into which a crankpin is fitted, a first connecting-pin bearing portion into which a first connecting pin for the upper link is fitted, and a second connecting-pin bearing portion into which a second connecting pin for the control link is fitted. A central connecting portion is provided to connect an axial central portion of at least one of the first and second connecting-pin bearing portions to an axial central portion of the crankpin bearing portion. The central connecting portion has an axial length L1 shorter than each of an axial length L2 of the crankpin bearing portion, an axial length L3 of the first connecting-pin bearing portion, and an axial length L4 of the second connecting-pin bearing portion.

    摘要翻译: 在用于使用上连杆,下连杆和控制连杆的内燃机的可变压缩比机构中,下连杆包括曲柄销轴承部分,曲柄销装配到该曲轴销轴承部分中,第一连接销轴承部分 第一连接销用于上连杆,第二连接销轴承部分安装有用于控制连杆的第二连接销。 中心连接部分设置成将第一和第二连接销轴承部分中的至少一个的轴向中心部分连接到曲柄销轴承部分的轴向中心部分。 中心连接部分的轴向长度L1比曲轴销轴承部分的轴向长度L2,第一连接销轴承部分的轴向长度L3和第二连接销轴承部分的轴向长度L4短。

    Multi-link variable compression ratio engine

    公开(公告)号:EP2055914B1

    公开(公告)日:2018-07-25

    申请号:EP08167313.9

    申请日:2008-10-22

    IPC分类号: F02B75/04

    CPC分类号: F02B75/048

    摘要: A multi-link variable compression ratio engine is provided with a crankshaft (12), a piston (11), a control shaft (20), a linkage, a motor (35) and a reduction mechanism. The crankshaft (12) moves the piston (11) within an engine cylinder. The control shaft (20) has an eccentric axle eccentric relative to its center-axis. The linkage operatively connects the piston to the crankshaft and the crankshaft (12) to the eccentric axle of the control shaft (20). The motor (35) rotates the control shaft (20) so a top-dead-center position of the piston (11) changes to vary compression ratios by changing the positions of the eccentric axle and the linkage. The reduction mechanism (30) couples the motor (35) to the control shaft (20) to transmit a reduced rotation of the motor to the control shaft so a reduction ratio of a rotation angle of the motor to a rotation angle of the control shaft is less at high-compression ratios than at intermediate compression ratios.