公开(公告)号：EP0294033B1

公开(公告)日：1992-07-08

申请号：EP88304107.1

申请日：1988-05-06

申请人： SATURN CORPORATION (a Delaware corp.)

发明人： Mainquist, James Kevin ,  Deady, Robert Byron ,  Downs, Robert Charles

IPC分类号： F16H61/16

CPC分类号： F16H61/143 ,  F16H61/12 ,  F16H2061/1204 ,  F16H2061/1232 ,  F16H2061/1236 ,  F16H2061/1268 ,  Y10T74/19251 ,  Y10T477/63385 ,  Y10T477/635 ,  Y10T477/6934

公开(公告)号：EP0482691A1

公开(公告)日：1992-04-29

申请号：EP91202556.6

申请日：1991-10-02

申请人： SATURN CORPORATION

发明人： Milunas, Rimas Stasys ,  Nitz, Larry Theodore ,  Rees, Susan Lettie

IPC分类号： F16H61/02 ,  F16H61/10

CPC分类号： F16H61/0213 ,  F16D48/062 ,  F16D2500/10412 ,  F16D2500/1085 ,  F16D2500/3021 ,  F16D2500/3026 ,  F16D2500/30404 ,  F16D2500/30803 ,  F16D2500/30816 ,  F16D2500/3108 ,  F16D2500/3166 ,  F16D2500/5106 ,  F16D2500/70488 ,  F16D2500/70605 ,  F16D2500/7109 ,  F16H35/10 ,  F16H59/72 ,  F16H61/684 ,  F16H2057/016 ,  F16H2059/725 ,  Y10T477/693 ,  Y10T477/6937 ,  Y10T477/69383 ,  Y10T477/69387

摘要： An improved method of scheduling ratio shifting in a vehicle transmission adaptively adjusts the normal shift schedule to avoid shift-related overheating of the torque transmitting devices of the transmission. In normal operation, transmission shifting is scheduled by comparing measured vehicle speed and engine throttle position values with predefined load data. In the background, the transmission control unit determines the cumulative thermal energy stored in the torque transmitting devices. If excessive energy is indicated, the normal shift schedule is modified to allow extended operation in the lower speed ratios. When the cumulative energy indication returns to a normal level, normal shift scheduling is resumed.

摘要翻译： 车辆变速器中的调度比率变速的改进方法自适应地调整正常换档计划，以避免变速器的扭矩传递装置的换档相关的过热。 在正常操作中，通过将测量的车速和发动机节气门位置值与预定义的负载数据进行比较来安排变速箱换档。 在背景中，变速器控制单元确定存储在扭矩传递装置中的累积热能。 如果指示过多的能量，则修正正常换档计划，以允许在较低速比下延长运行。 当累积能量指示恢复到正常水平时，恢复正常班次调度。

公开(公告)号：EP0478968A2

公开(公告)日：1992-04-08

申请号：EP91114816.1

申请日：1991-09-03

申请人： SATURN CORPORATION

发明人： Mainquist, James Kevin ,  Downs, Robert Charles ,  Nitz, Larry Theodore

IPC分类号： F16H63/30 ,  F16H61/02

CPC分类号： F16H63/3023 ,  F16H61/0246 ,  F16H61/682 ,  F16H2061/0255 ,  Y10T74/19488

摘要： A mechanical clutch (52,56) is provided to selectively interconnect a forward (66) or reverse (70) gear member to a transmission shaft (62). The clutch is operated by a servo piston (16) and fork (30) structure. The servo piston is slidably disposed in a housing (12) and urged in the forward select position by a spring (18). The housing and servo piston cooperate to define two fluid chambers (36,42) which are maintained in a separated condition when the forward select position position is established. One chamber (36) is in fluid communication with a fluid system (100,102) that is controlled to provide fluid at two distinct pressure levels, depending upon various vehicle operating parameters. The other chamber (42) is connected with a selectively engageable fluid operated friction clutch (94) which is effective to assist in establishing at least the reverse drive ratio within the transmission. The lowest level of fluid pressure in the one chamber is not sufficient to cause the piston to overcome the spring force and thereby move the clutch to the reverse select position. The second pressure level is, however, sufficient to cause such movement. In the reverse select position, the chambers are fluidly interconnected and the fluid clutch can be engaged by the fluid pressure supplied through the second chamber from the first chamber.

摘要翻译： 机械离合器（52,56）设置成选择性地将前进（66）或反向（70）齿轮构件互连到传动轴（62）。 离合器由伺服活塞（16）和叉（30）结构操作。 伺服活塞可滑动地设置在壳体（12）中，并通过弹簧（18）在向前选择位置被推动。 壳体和伺服活塞配合以限定两个流体室（36,42），当建立前向选择位置位置时，它们被保持在分离的状态。 一个室（36）与流体系统（100,102）流体连通，其被控制以根据各种车辆操作参数在两个不同的压力水平提供流体。 另一个室（42）与可选择性地接合的流体操作的摩擦离合器（94）连接，该摩擦离合器有效地帮助至少建立变速器内的反向传动比。 一个腔室中最低水平的流体压力不足以使活塞克服弹簧力，从而将离合器移动到反向选择位置。 然而，第二压力水平足以引起这种运动。 在反向选择位置，腔室流体地互连，并且流体离合器可以通过从第一腔室通过第二腔室供应的流体压力接合。

公开(公告)号：EP0310275A3

公开(公告)日：1989-05-31

申请号：EP88308646.4

申请日：1988-09-19

申请人： SATURN CORPORATION (a Delaware corp.)

发明人： Milunas, Rimas Stacy

IPC分类号： B60K41/06 ,  F16H61/12

CPC分类号： F16H61/12 ,  F16H61/0213 ,  F16H61/682 ,  F16H2061/0096 ,  F16H2061/0209 ,  F16H2061/1208 ,  F16H2061/1224 ,  F16H2061/1272 ,  F16H2061/1276 ,  Y10S477/906 ,  Y10T477/693625

摘要： An electronic transmission control in which the shift pattern is adjusted in the event of a sensed clutch or gear failure so that shifting between the nonfailed ratios is carried out in a manner which avoids engine stalling or overspeeding and significant stressing of the transmission gear elements. The original shift point lines involving the failed ratio are removed and replaced with a single shift point line positioned intermediate the original two. The new shift point line is determined in accordance with an arithmetic combination of the original shift point lines, and is limited based on engine overspeed and driveability considerations.

公开(公告)号：EP0294033A2

公开(公告)日：1988-12-07

申请号：EP88304107.1

申请日：1988-05-06

申请人： SATURN CORPORATION (a Delaware corp.)

发明人： Mainquist, James Kevin ,  Deady, Robert Byron ,  Downs, Robert Charles

IPC分类号： F16H61/16

CPC分类号： F16H61/143 ,  F16H61/12 ,  F16H2061/1204 ,  F16H2061/1232 ,  F16H2061/1236 ,  F16H2061/1268 ,  Y10T74/19251 ,  Y10T477/63385 ,  Y10T477/635 ,  Y10T477/6934

摘要： A hydraulic transmission control circuit uses a plurality of solenoid valves (14, 16, 1 20) to control the engagement of friction devices during the shifting of a transmission between gear ratios. A clutch priority valve (34) is provided to prevent the continuous simultaneous engagement of friction devices which will establish more than one ratio. Also provided is a manually controlled valve (3 which permits the operator to determine the range in which the transmission will operate.
If the clutch priority valve (34) has been actuated, the transmission ratio can be controlled between a low ratio, for example, second gear, and a high ratio, for example, third or fourth gear, by use of the manual valve (3 in combination with an actuator mode valve (5. The clutch priority valve, when actuated, is also operable to disengage a torque converter clutch.

摘要翻译： 液压传动控制回路使用多个电磁阀（14,16，120）来控制在传动比变速期间摩擦装置的啮合。 提供离合器优先阀（34）以防止将建立多于一个比例的摩擦装置的连续同时接合。 还提供了一种手动控制阀（3，其允许操作者确定变速器将工作的范围），如果离合器优先阀（34）已被致动，则传动比可以在低比例（例如， 第二齿轮和高比例，例如第三或第四档，通过使用手动阀（3与致动器模式阀（5）组合）。离合器优先阀当被致动时也可操作以使变矩器 离合器。