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公开(公告)号：EP2113057A1
公开(公告)日：2009-11-04
申请号：EP08709597.2
申请日：2008-02-07
IPC分类号： F16H61/664
CPC分类号： F16H61/6649 , F16H15/38 , F16H37/086 , F16H61/6648
摘要： The invention concerns an arrangement for control of a continuously variable transmission. The transmission includes a variator (10) having a movable torque transfer part (rollers 18) whose position corresponds to a variator drive ratio. A hydraulic actuator (28) is arranged to exert an adjustable force on the torque transfer part. The transmission further comprises a flow control arrangement which is arranged to receive as control inputs (a) the current position of the torque transfer part and (b) a demanded position for it. The demanded position may for example be determined by driver input. The flow control arrangement is adapted to supply through a s upply o utlet w hich c omniunicates w ith t he h ydraulic actuator a flow of fluid which is modulated in accordance with an error between the two control inputs. The flow of fluid increases with increasing error. A relief passage (110) leads from the said outlet to a pressure sink and is constricted so that fluid flow through it results in a p ressure at the hydraulic a ctuator which is g reater than that of the sink by an amount which corresponds to the rate of flow through the relief passage. The result is a mode of control of the transmission which possesses some of the advantages of both torque and ratio control.
摘要翻译： 本发明涉及一种用于控制无级变速器的装置。 变速器包括变速器（10），该变速器具有位置对应于变速器传动比的可动转矩传递部（辊18）。 液压致动器（28）布置成在扭矩传递部件上施加可调整的力。 变速器还包括流量控制装置，该流量控制装置布置成接收（a）扭矩传递部件的当前位置和（b）它的所需位置作为控制输入。 要求的位置可以例如由驾驶员输入来确定。 流量控制装置适用于通过供液泵供应流体，该流体通过与液压致动器通信的流体流动根据两个控制输入之间的误差进行调节。 流体的流量随着误差的增加而增加。 一个泄压通道（110）从所述出口通向一个压力槽并被收缩，使得通过它的流体流动导致在液压密封器处产生一个比水槽的液压密封器更大的量， 通过泄压通道的流量。 其结果是变速器的控制模式，其具有扭矩和比率控制的一些优点。
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公开(公告)号：EP2539611A2
公开(公告)日：2013-01-02
申请号：EP11705245.6
申请日：2011-02-22
IPC分类号： F16H61/664
CPC分类号： F16H61/6649 , F16H61/6648
摘要： The invention concerns a traction control arrangement for a variator (10). The traction control arrangement has a traction control valve (119, 119a) which controls the traction load pressure and which is operable in at least two modes: 1) in a first mode, it receives (a) a first pilot pressure signal corresponding to the traction load pressure and (b) a second pilot pressure signal corresponding to the higher of the first and second reaction pressures, and controls the traction load pressure in response to the difference between the first and second pilot pressure signals; 2) in a second mode, it receives (a) a first pilot pressure signal corresponding to the traction load pressure, (b) a second pilot pressure signal corresponding to the higher of the first and second reaction pressures, and (c) a third pilot pressure signal corresponding to the lower of the first and second reaction pressures, and controls the traction load pressure as a function of the first, second and third pilot pressure signals. The relationship between traction load pressure and reaction force is different in the two modes and in this way provision is made to selectively alter the traction coefficient in the variator. According to a second aspect of the invention, a pre- stressed refiel spring acts in opposition to the traction load actuator.
摘要翻译： 本发明涉及一种用于变换器（10）的牵引力控制装置。 牵引力控制装置具有牵引控制阀（119,119a），该牵引力控制阀控制牵引负荷压力并且可以至少两种模式操作：1）在第一模式中，其接收（a）与第一模式相对应的第一先导压力信号 （b）对应于第一和第二反作用压力中的较高者的第二先导压力信号，并且响应于第一和第二先导压力信号之间的差异来控制牵引负载压力; 2）在第二模式中，它接收（a）对应于牵引负载压力的第一先导压力信号，（b）对应于第一和第二反作用压力中的较高者的第二先导压力信号，以及（c）第三 先导压力信号对应于第一和第二反作用压力中较低的一个，并根据第一，第二和第三先导压力信号控制牵引负载压力。 牵引负载压力和反作用力之间的关系在两种模式中是不同的，并且以这种方式提供选择性地改变变速器中的牵引系数。 根据本发明的第二方面，预应力反射弹簧与牵引负载致动器相反地作用。
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公开(公告)号：EP2539609B1
公开(公告)日：2015-11-04
申请号：EP11705246.4
申请日：2011-02-22
CPC分类号： F16H61/0025 , F16H15/38 , F16H57/0441 , F16H57/0446 , F16H57/049 , F16H2061/0037 , Y10T137/86131
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公开(公告)号：EP2539611B1
公开(公告)日：2014-04-02
申请号：EP11705245.6
申请日：2011-02-22
IPC分类号： F16H61/664
CPC分类号： F16H61/6649 , F16H61/6648
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公开(公告)号：EP2539609A1
公开(公告)日：2013-01-02
申请号：EP11705246.4
申请日：2011-02-22
CPC分类号： F16H61/0025 , F16H15/38 , F16H57/0441 , F16H57/0446 , F16H57/049 , F16H2061/0037 , Y10T137/86131
摘要： An apparatus is disclosed for supplying fluid to a continuously variable transmission which has a lubrication system and at least one transmission control system. The apparatus comprises first and second pumps (120, 122). The first pump has an output which is connectable to the lubrication system through a supply control valve arrangement (132). The second pump has an output which is connectable to the transmission control system. The apparatus has a transfer passage (128) through which the first pump can be connected to the transmission control system. The supply control valve arrangement is adapted to selectively throttle supply of fluid from the output of the first pump to the lubrication system in order to cause fluid output from the first pump to be diverted through the transfer passage to the transmission control system.
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