公开(公告)号：US20090071276A1

公开(公告)日：2009-03-19

申请号：US12268784

申请日：2008-11-11

申请人： Filippo BALDASCINI ,  Dario Caenazzo ,  Domenico Mesiti ,  Gianluigi Pregnolato

发明人： Filippo BALDASCINI ,  Dario Caenazzo ,  Domenico Mesiti ,  Gianluigi Pregnolato

IPC分类号： F16H59/04

CPC分类号： F16H61/688 ,  F16H61/30 ,  F16H63/20 ,  F16H63/28 ,  F16H63/3408 ,  F16H63/36 ,  F16H63/38 ,  F16H2200/0056 ,  Y10T74/19223 ,  Y10T74/19233 ,  Y10T74/19251 ,  Y10T74/19279 ,  Y10T74/19288 ,  Y10T74/20024

摘要： The control system comprises: a first hydraulically-operated actuator device for controlling the engagement of a first set of gears by selection and engagement movements; a second hydraulically-operated actuator device for controlling the engagement of a second set of gears by selection and engagement movements; a first solenoid valve of the ON/OFF type arranged to put the first or the second actuator device alternatively into communication with a supply of fluid under pressure; a second solenoid valve of the ON/OFF type arranged to control the selection movements of the actuator device which from time to time is in communication with the fluid supply; a distributor interposed between the fluid supply and the two actuator devices and displaceable under the control of the first solenoid valve between a first working position in which it puts the fluid supply into communication with the first actuator device and a second working position in which it puts the fluid supply into communication with the second actuator device; a third proportional pressure solenoid valve and a fourth proportional pressure solenoid valve arranged to control the engagement movements of the actuator device which from time to time is in communication with the fluid supply. With such a control system the gear change operation thus requires the intervention of at most four solenoid valves.

摘要翻译： 控制系统包括：第一液压操作致动器装置，用于通过选择和接合运动来控制第一组齿轮的接合; 第二液压操作致动器装置，用于通过选择和接合运动来控制第二组齿轮的接合; ON / OFF型的第一电磁阀被布置成将第一或第二致动器装置交替地与压力下的流体供应通信; ON / OFF型的第二电磁阀，其被布置成控制致动器装置的选择运动，所述选择运动不时地与流体供应连通; 插入在流体供应源和两个致动器装置之间的分配器，并且在第一工作位置和第二工作位置之间在第一工作位置之间在第一电磁阀的控制下移动，在第一工作位置中，其将流体供应与第一致动器装置连通， 所述流体供应与所述第二致动器装置连通; 第三比例压力电磁阀和第四比例压力电磁阀，其布置成控制致动器装置的接合运动，其随时间与流体供应连通。 对于这种控制系统，变速操作因此需要至少四个电磁阀的干预。