公开(公告)号：US4921065A

公开(公告)日：1990-05-01

申请号：US175827

申请日：1988-03-31

申请人： Tetsuro Hamada ,  Yoshiki Noro ,  Noboru Ashikawa

发明人： Tetsuro Hamada ,  Yoshiki Noro ,  Noboru Ashikawa

IPC分类号： B60K17/348 ,  B60K17/35 ,  B60K23/08 ,  B62D9/00 ,  F16D35/00 ,  F16D48/12

CPC分类号： F16D35/005 ,  B60K17/351 ,  B60K23/0808 ,  B62D9/00 ,  B60W2520/10 ,  B60W2520/105 ,  Y10T74/19023

摘要： A motor vehicle such as a four-wheel drive vehicle having a first axle shaft which is driven by a drive source and a second axle shaft which is driven by the same drive source, each of a pair of wheels associated with the second axle shaft being powered by way of individual variable torque transmitting devices, further comprising: a steering condition sensor; and a control unit which reduces a torque transmission ratio of one of the variable torque transmitting devices corresponding to the inner one of the wheels of the second axle shaft when the steering condition sensor has detected a steering angle greater than a prescribed value. Thereby, the problem of the tight turn braking can be avoided without losing the advantages of four-wheel drive. Other driving conditions such as braking and acceleration as well as an excessive temperature increase in each of the variable torque transmitting devices may be taken into consideration in carrying out the control of the variable torque transmitting devices which preferably consist of viscous couplings. Each of the viscous couplings is provided with means for externally varying the torque transmission ratio thereof and transmits torque between input and output thereof at a level which is substantially proportional to the speed difference between input and output thereof.

摘要翻译： 诸如四轮驱动车辆的机动车辆具有由驱动源驱动的第一车轴和由相同驱动源驱动的第二车轴，与第二车轴相关联的一对车轮中的每一个 通过单个可变扭矩传递装置进行动力，还包括：转向状态传感器; 以及控制单元，当所述转向状态传感器已经检测到大于规定值的转向角时，所述控制单元减小与所述第二车轴的所述车轮的内侧相对应的所述可变转矩传递装置中的一个的转矩传递比。 因此，可以避免紧凑制动的问题，而不失去四轮驱动的优点。 在执行优选由粘性联轴器组成的可变扭矩传递装置的控制中，可以考虑其他驱动条件，例如制动和加速以及每个可变扭矩传递装置中的过度升温。 每个粘性联轴器都设置有用于外部改变其扭矩传递比的装置，并以其输入和输出之间的速度差基本成比例的水平传递其输入和输出之间的扭矩。

公开(公告)号：US5065836A

公开(公告)日：1991-11-19

申请号：US516378

申请日：1990-04-30

申请人： Tetsuro Hamada ,  Yoshiki Noro ,  Noboru Ashikawa

发明人： Tetsuro Hamada ,  Yoshiki Noro ,  Noboru Ashikawa

IPC分类号： B60K17/348 ,  B60K17/35 ,  B60K23/08 ,  B62D9/00 ,  F16D35/00 ,  F16D48/12

CPC分类号： F16D35/005 ,  B60K17/351 ,  B60K23/0808 ,  B62D9/00 ,  B60W2520/10 ,  B60W2520/105 ,  Y10T74/19023

摘要： A motor vehicle such as a four-wheel drive vehicle having a first axle shaft which is driven by a drive source and a second axle shaft which is driven by the same drive source, each of a pair of wheels associated with the second axle shaft being powered by way of individual variable torque transmitting devices, further comprising: a steering condition sensor; and a control unit which reduces a torque transmission ratio of one of the variable torque transmitting devices corresponding to the inner one of the wheels of the second axle shaft when the steering condition sensor has detected a steering angle greater than a prescribed value. Thereby, the problem of the tight turn braking can be avoided without losing the advantages of four-wheel drive. Other driving conditions such as braking and acceleration as well as an excessive temperature increase in each of the variable torque transmitting devices may be taken into consideration in carrying out the control of the variable torque transmitting devices which preferably consist of viscous couplings. Each of the viscous couplings is provided with means for externally varying the torque transmission ratio thereof and transmits torque between input and output thereof at a level which is substantially proportional to the speed difference between input and output thereof.

公开(公告)号：US6008606A

公开(公告)日：1999-12-28

申请号：US154745

申请日：1998-09-17

申请人： Kentaro Arai ,  Tetsuro Hamada ,  Shigenobu Sekiya

发明人： Kentaro Arai ,  Tetsuro Hamada ,  Shigenobu Sekiya

IPC分类号： B60K23/08 ,  B60K6/20 ,  B60K6/38 ,  B60K6/485 ,  B60K6/52 ,  B60K17/356 ,  B60L11/14 ,  B60W10/02 ,  B60W10/08 ,  B60W20/00 ,  H02P1/04

CPC分类号： B60W20/40 ,  B60K1/00 ,  B60K1/02 ,  B60K6/365 ,  B60K6/387 ,  B60K6/442 ,  B60K6/52 ,  B60W10/02 ,  B60W10/08 ,  B60G2800/213 ,  B60K17/356 ,  B60K2001/001 ,  B60L2220/46 ,  B60W20/00 ,  B60W2520/26 ,  B60W2520/28 ,  Y02T10/6234 ,  Y02T10/6265 ,  Y10S903/903 ,  Y10S903/912 ,  Y10S903/916 ,  Y10S903/946

摘要： A starting assistance device for a vehicle has an electric motor and a dog clutch which is switched on at the time of starting of the vehicle to thereby transmit a torque to idler wheels. A sensor is provided to detect the switching on and switching off of the dog clutch. In case the switching off of the dog clutch is not detected when the rotational speeds of the idler wheels have exceeded a predetermined value after the starting of the vehicle, the electric motor is driven in such a direction of rotation so as to cancel the torque which operates on the dog clutch due to the frictional force in the electric motor.

摘要翻译： 车辆的起动辅助装置具有电动马达和狗离合器，其在起动车辆时接通，从而将转矩传递到惰轮。 提供传感器来检测狗离合器的接通和断开。 在车辆起动后当惰轮的转速超过规定值时，没有检测出爪式离合器的关闭的情况下，电动机以这样的旋转方向被驱动，以抵消转矩 由于电动机中的摩擦力而对狗离合器进行操作。

公开(公告)号：US5221101A

公开(公告)日：1993-06-22

申请号：US676754

申请日：1991-03-26

申请人： Kiyokazu Okubo ,  Tetsuro Hamada ,  Kazunori Shibuya ,  Kentaro Arai

发明人： Kiyokazu Okubo ,  Tetsuro Hamada ,  Kazunori Shibuya ,  Kentaro Arai

IPC分类号： B60K17/10 ,  B60K17/34 ,  B60K17/35 ,  F16D43/284

CPC分类号： B60K17/3505

摘要： A power transmitting system for a four-wheel drive vehicle includes a first hydraulic pump driven interlockingly with the rotation of front wheels, a second hydraulic pump driven interlockingly with the rotation of rear wheels, and a hydraulic clutch for connecting the front wheels and rear wheels. The hydraulic clutch is adapted to be brought into an engaged state by an increase in oil pressure based on the difference between the amount of oil discharged from one of the hydraulic pumps and the amount of oil drawn into the other hydraulic pump. The hydraulic clutch, first hydraulic pump and second hydraulic pump are arranged in that sequence from the front toward rear of the vehicle on an axis extending longitudinally of the vehicle to maximize the air cooling effect on the hydraulic clutch and minimize the length of oil passages between the two hydraulic pumps.

摘要翻译： 用于四轮驱动车辆的动力传递系统包括与前轮的旋转互锁地驱动的第一液压泵，与后轮的旋转互锁地驱动的第二液压泵，以及用于连接前轮和后轮的液压离合器 。 液压离合器基于从一个液压泵排出的油的量与吸入另一个液压泵的油量之间的差异，通过增加油压而进入接合状态。 液压离合器，第一液压泵和第二液压泵以从车辆前后延伸的轴线顺序地布置在车辆纵向延伸的轴上，以最大限度地提高对液压离合器的空气冷却效果，并使油路之间的油路长度最小化 两台液压泵。

公开(公告)号：US5201820A

公开(公告)日：1993-04-13

申请号：US614788

申请日：1990-11-14

申请人： Tetsuro Hamada ,  Kazunori Shibuya ,  Kentaro Arai

发明人： Tetsuro Hamada ,  Kazunori Shibuya ,  Kentaro Arai

IPC分类号： B60K17/35 ,  B60K23/08

CPC分类号： B60K17/3505 ,  B60K23/0808

摘要： To ensure the benefits of four-wheel drive when the vehicle is accelerating or when the front wheels are slipping, and to eliminate the disadvantage of undesirably transmitting the braking force to the rear wheels when the vehicle is decelerating or when a braking action is applied to the vehicle, the front wheels and the rear wheels are coupled with each other when the rotational speed of the front wheels is higher than that of the rear wheels, but this coupling is disconnected when the rotational speeds of the front and rear wheels are substantially identical or when the rotational speed of the rear wheels is higher than that of the front wheels. To achieve this irrespective of whether the vehicle is moving forward or rearward, the power transmission system comprises a first pump coupled with the front wheels, a second pump coupled with the rear wheels, communication passages connecting these pumps in series with the inlet of one of them being connected to the outlet of the other, a fluid pressure actuated clutch interposed between the front and rear wheels, and a switching valve for appropriately actuating the clutch according to the difference in the outputs and/or inputs of these pumps.

摘要翻译： 为了确保当车辆加速时或当前轮滑动时四轮驱动的好处，并且消除当车辆减速时不利地将制动力传递到后轮的缺点，或者当制动动作被施加到 当前轮的转速高于后轮的转速时，车辆，前轮和后轮彼此联接，但是当前轮和后轮的转速基本相同时，该联接被切断 或者当后轮的转速高于前轮的转速时。 为了实现这一点，无论车辆是向前还是向后移动，动力传动系统包括与前轮联接的第一泵，与后轮联接的第二泵，将这些泵与这些泵连接的连通通道与 它们连接到另一个的出口，插入在前轮和后轮之间的流体压力致动离合器，以及用于根据这些泵的输出和/或输入的差异适当地致动离合器的切换阀。

公开(公告)号：US4889353A

公开(公告)日：1989-12-26

申请号：US148804

申请日：1988-01-27

申请人： Tetsuro Hamada ,  Kazuhiko Shimada ,  Katsuhiko Masuda ,  Kazunori Shibuya

发明人： Tetsuro Hamada ,  Kazuhiko Shimada ,  Katsuhiko Masuda ,  Kazunori Shibuya

IPC分类号： B60K17/348 ,  B60K17/35 ,  F16D41/07 ,  F16D41/08 ,  F16D41/10

CPC分类号： F16D41/10 ,  B60K17/3505 ,  F16D41/07

摘要： To the end of eliminating the problems arising from substantially rigid connection between a front wheel set and a rear wheel set in a four-wheel drive vehicle, there is provided a power transmission system in which a speed-dependent power transmission device is provided between the front wheel set and the rear wheel set so that both the wheel sets are substantially rigidly connected to each other in a low speed range and rotational power is transmitted only from the front wheel set to the rear wheel set in a high speed range. The power transmission device of this kind can be conveniently formed by a pair of one-way clutch elements which are connected between an input member and an output member in a mutually parallel relationship; one of the one-way clutch elements transmitting power from the input member to the output member in both the high and the low speed range while the other one-way clutch element transmits power only from the output member to the input member in the low speed range but does not transmit power in either direction in the high speed range. This speed-dependency can be accomplished by using one-way clutch sprag elements each having a gravitational center offset from its center of rolling motion for wedging between the input member and the output member.

摘要翻译： 为了消除由四轮驱动车辆中的前轮组和后轮组之间的实质上刚性连接引起的问题，提供了一种动力传递系统，其中在速度依赖的动力传递装置 前轮组和后轮组，使得两个车轮组在低速范围内基本上刚性地彼此连接，并且旋转动力仅在高速范围内从前轮组传递到后轮组。 这种动力传递装置可以通过一对单向离合器元件方便地形成，该单向离合器元件以相互平行的关系连接在输入构件和输出构件之间; 其中一个单向离合器元件在高速和低速范围内从输入构件向输出构件传递动力，而另一个单向离合器元件仅以低速将输出构件仅从输出构件传递到输入构件 范围，但不能在高速范围内的任一方向传输功率。 这种速度依赖性可以通过使用单向离合器楔形元件来实现，每个离合器楔形元件具有从其滚动运动中心偏移的重心，用于楔入输入构件和输出构件之间。

公开(公告)号：US4706976A

公开(公告)日：1987-11-17

申请号：US822010

申请日：1986-01-24

申请人： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

发明人： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

IPC分类号： B62D6/02 ,  B62D7/14 ,  B62D7/15

CPC分类号： B62D7/1545

摘要： In a front and rear wheel steering device for a vehicle in which the steering angle ratio of the rear wheels relative to the front wheels is variable according to the vehicle speed, by accounting for the magnitude of vehicle acceleration in determining the steering angle ratio of the rear wheels by using a mathematical function in the form of f(u) - g(u')where u is a vehicle speed and u' is a change rate of the vehicle speed, it is possible to reduce the slip angle of the vehicle to zero irrespective of the vehicle speed and the vehicle acceleration and the phase delay of the lateral response of the vehicle can be reduced, whereby the driveability of the vehicle is substantially improved and, thus, driving a car can be made easier, safer and less tiring.

摘要翻译： 在前轮和后轮转向装置中，其中后轮相对于前轮的转向角比可根据车速而变化，通过考虑确定车辆的转向角比的车辆加速度的大小， 通过使用f（u）-g（u'）形式的数学函数，其中u是车速，u'是车速的变化率，可以减小车辆的滑移角 无论车速如何，车辆的加速度和车辆的横向响应的相位延迟都可以减小，由此可以显着提高车辆的驾驶能力，因此可以使驾驶汽车更容易，更安全，更少 累了

公开(公告)号：US4695068A

公开(公告)日：1987-09-22

申请号：US822000

申请日：1986-01-24

申请人： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

发明人： Yoshimichi Kawamoto ,  Yoshimi Furukawa ,  Tetsuro Hamada ,  Mitsuya Serizawa

IPC分类号： B62D7/15 ,  B62D6/00

CPC分类号： B62D7/1545

摘要： In a front and rear wheel steering device contive for vehicle in which the steering angle ratio of the rear wheels relative to the front wheels is variable according to the vehicle speed, provision of a manual selection means for fixing the steering angle ratio to certain fixed values which may be either positive or negative can greatly improve the maneuverability of the vehicle in both high speed and low speed ranges. However, inadvertent manual selection of the steering angle ratio is not desirable since it may cause a sudden change in the steering angle of the rear wheels. Therefore, this invention provides means for preventing the manual selection of the steering angle ratio when it is not proper. This means may be an active prohibition control of manual steering angle ratio selection means, an alarm to warn the driver or a vehicle speed control which limits the vehicle speed. The situations in which the manual selection of the steering angle ratio is not proper may be determined from such factors as vehicle acceleration, transmission shift position, steering rate and so on.

摘要翻译： 在后轮相对于前轮的转向角比可根据车速而变化的车辆用后轮转向装置中，设置用于将转向角比固定为某一固定值的手动选择装置 其可以是正的或负的可以大大提高车辆在高速和低速范围内的机动性。 然而，无意的手动选择转向角比是不期望的，因为它可能导致后轮的转向角的突然变化。 因此，本发明提供了当不适当时防止手动选择转向角比的装置。 这意味着可以是手动转向角比选择装置的主动禁止控制，警告驾驶员的警报或限制车辆速度的车速控制。 可以根据车辆加速度，变速档位，转向率等因素来确定手动选择转向角比例不正确的情况。

公开(公告)号：US06427817B1

公开(公告)日：2002-08-06

申请号：US09677876

申请日：2000-10-03

申请人： Kentaro Arai ,  Ryuichi Murakami ,  Yasunori Arai ,  Tetsuro Hamada

发明人： Kentaro Arai ,  Ryuichi Murakami ,  Yasunori Arai ,  Tetsuro Hamada

IPC分类号： F16D1374

CPC分类号： F16D27/14 ,  F16D27/004 ,  F16D27/115

摘要： An electromagnetic clutch having a solenoid coil (80), a coil housing (81) disposed surrounding the solenoid coil (80), an armature plate (82) disposed facing the side of the coil housing, and a clutch mechanism. The current flowing to the solenoid coil (80) is controlled so as to control the clamping of the armature plate (82) to the coil housing (81), and the clamping force acting on the armature plate is used to control the engagement of the clutch mechanism. There is also a lubricating oil supply channel (63) for supplying lubricating oil from the inside in the radial direction into a gap between the coil housing and the armature plate, and oil reservoir holding lubricating oil to be supplied into the gap is formed around the inner periphery of the portion where the coil housing faces the armature plate.

摘要翻译： 一种具有电磁线圈（80）的电磁离合器，围绕所述螺线管线圈（80）设置的线圈壳体（81），与所述线圈壳体的侧面相对设置的衔铁板（82）和离合器机构。 控制流向螺线管线圈（80）的电流，以控制衔铁板（82）与线圈壳体（81）的夹持，并且使用作用在衔铁板上的夹紧力来控制 离合器机构。 还有一个用于从径向内侧将润滑油从径向供给到线圈壳体和衔铁板之间的间隙的润滑油供给通道（63），并且在其周围形成供给到间隙中的储油容器保持润滑油 线圈壳体面向电枢板的部分的内周。

公开(公告)号：US6095276A

公开(公告)日：2000-08-01

申请号：US5690

申请日：1998-01-13

申请人： Koji Kuroda ,  Takayuki Yakou ,  Kazunori Kobayashi ,  Tetsuro Hamada

发明人： Koji Kuroda ,  Takayuki Yakou ,  Kazunori Kobayashi ,  Tetsuro Hamada

IPC分类号： B60K23/04 ,  B60K17/34 ,  B60K17/35 ,  B60K23/08 ,  B60K17/354

CPC分类号： F16H48/30 ,  B60K17/35 ,  B60K23/0808 ,  F16H48/295 ,  B60K17/3505 ,  F16H2048/205 ,  F16H2048/346 ,  F16H48/22

摘要： A rear differential in a four-wheel drive vehicle includes a left and right clutches adapted to distribute a driving force transmitted from front wheels through a propeller shaft to left and right rear wheels. If the engagement of the left and right clutches is released, only the front wheels are driven and in this manner, the vehicle is brought into a front wheel-drive state. If the left and right clutches are brought into their engaged states, both of the front wheels and the rear wheels are driven and in this manner, the vehicle is brought into a four-wheel drive state. By changing the engagement forces of the left and right clutches, different driving forces can be distributed to the left and right rear wheels. In addition, when a driver operates a differential lock switch, the left and right clutches, are brought into their engaged states with the maximum engagement force, thereby integrally coupling the propeller shaft to the left and right rear wheels to provide a differential-locked state. Thus, a differential lock mechanism can be provided to the differential in a simple structure.

摘要翻译： 四轮驱动车辆的后差速器包括左右离合器，其适于将从前轮传递的驱动力通过传动轴分配到左后轮和右后轮。 如果释放左右离合器的接合，则仅驱动前轮，并且以这种方式使车辆进入前轮驱动状态。 如果左右离合器进入其接合状态，则前轮和后轮都被驱动，以这种方式使车辆进入四轮驱动状态。 通过改变左右离合器的啮合力，可以将不同的驱动力分配给左右后轮。 此外，当驾驶员操作差速锁定开关时，左右离合器以最大的接合力进入其接合状态，从而将传动轴整体地联接到左右后轮以提供差速锁定状态 。 因此，可以以简单的结构向差速器提供差速锁定机构。