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    System for controlling the transmission of a four-wheel drive vehicle
    1.
    发明授权
    System for controlling the transmission of a four-wheel drive vehicle 失效
    用于控制四轮驱动车辆传动的系统

    公开(公告)号：US4576061A

    公开(公告)日：1986-03-18

    申请号：US561719

    申请日：1983-12-15

    申请人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakakiyama

    发明人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakakiyama

    IPC分类号： B60K23/08 ,  F16H37/06

    CPC分类号： B60K23/08 ,  Y10T477/613 ,  Y10T74/19084

    摘要： A system for controlling a power transmission of a four-wheel drive vehicle powered by an engine. The system is provided with a transmission for transmitting a power of the engine to main wheels, a clutch for selectively transmitting the power to auxiliary wheels, a vehicle speed sensor for sensing the speed of the vehicle and for producing a vehicle speed signal dependent on the speed, a steering angle sensor for sensing the steering angle of the vehicle and for producing a steering angle signal dependent on the steering angle. A control circuit is provided to compare the vehicle speed signal and steering angle signal with reference values and judge whether the condition is in the range of conditions causing tight corner braking and to produce a clutch signal. A switch is responsive to the clutch signal for disengaging the clutch, whereby the four-wheel drive is changed to the two-wheel drive.

    摘要翻译： 一种用于控制由发动机驱动的四轮驱动车辆的动力传递的系统。 该系统设置有用于将发动机的动力传递到主轮的变速器，用于选择性地将动力传递到辅助车轮的离合器，用于感测车辆速度的车速传感器以及用于产生取决于车辆速度的车速信号 速度，用于感测车辆的转向角的转向角传感器，以及用于产生取决于转向角的转向角信号。 提供控制电路以将车速信号和转向角信号与参考值进行比较，并判断条件是否在导致紧弯角制动的条件范围内并产生离合器信号。 开关响应于离合器信号以分离离合器，由此将四轮驱动改变为两轮驱动。

    System for controlling a power transmission of a four-wheel drive vehicle
    2.
    发明授权
    System for controlling a power transmission of a four-wheel drive vehicle 失效
    用于控制四轮驱动车辆的动力传递的系统

    公开(公告)号：US4630704A

    公开(公告)日：1986-12-23

    申请号：US651557

    申请日：1984-09-17

    申请人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakakiyama

    发明人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakakiyama

    IPC分类号： B60K23/08

    CPC分类号： B60K23/08 ,  B60W2550/142

    摘要： A system for controlling a power transmission of a four-wheel drive vehicle powered by an engine has a transmission for transmitting the power of the engine to main driving wheels of the four-wheel drive vehicle, a hydraulically operated clutch for transmitting the power to auxiliary driving wheels, a hydraulic circuit for operating the clutch in accordance with driving conditions. The system comprises a sensor for detecting the inclination of roads and for producing an output signal dependent on the inclination, and a control circuit responsive to the output signal from the sensor for engaging the clutch when the output signal exceeds a predetermined value, thereby establishing the four-wheel drive.

    摘要翻译： 用于控制由发动机驱动的四轮驱动车辆的动力传递的系统具有用于将发动机的动力传递到四轮驱动车辆的主驱动轮的变速器，用于将动力传递给辅助装置的液压离合器 驱动轮，用于根据驾驶条件操作离合器的液压回路。 该系统包括用于检测道路倾斜度和根据倾斜度产生输出信号的传感器，以及响应来自传感器的输出信号的控制电路，用于当输出信号超过预定值时接合离合器，从而建立 四轮驱动。

    System for controlling a power transmission of a four-wheel drive vehicle
    3.
    发明授权
    System for controlling a power transmission of a four-wheel drive vehicle 失效
    用于控制四轮驱动车辆的动力传递的系统

    公开(公告)号：US4617840A

    公开(公告)日：1986-10-21

    申请号：US561717

    申请日：1983-12-15

    申请人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakakiyama

    发明人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakakiyama

    IPC分类号： B60K23/08 ,  B60K41/02

    CPC分类号： B60K23/08 ,  Y10T477/613 ,  Y10T477/647 ,  Y10T477/691 ,  Y10T74/19079

    摘要： A system for controlling power transmission of a four-wheel drive vehicle powered by an engine. The vehicle is provided with a transmission for transmitting a power of the engine to main wheels and a clutch for selectively transmitting the power to auxiliary wheels. In order to detect sudden braking of the vehicle, a vehicle speed sensor and a control circuit for detecting deceleration of the vehicle greater than a predetermined value are provided, the control circuit producing an output signal. A switch is provided responsive to the output signal for engaging the clutch, whereby the four-wheel driving power transmission is established.

    摘要翻译： 用于控制由发动机驱动的四轮驱动车辆的动力传递的系统。 车辆设置有用于将发动机的动力传递到主轮的变速器和用于选择性地将动力传递到辅助轮的离合器。 为了检测车辆的突然制动，提供车速传感器和用于检测大于预定值的车辆减速度的控制电路，该控制电路产生输出信号。 响应于用于接合离合器的输出信号提供开关，从而建立四轮驱动动力传递。

    System for controlling a power transmission of a four-wheel drive vehicle
    4.
    发明授权
    System for controlling a power transmission of a four-wheel drive vehicle 失效
    用于控制四轮驱动车辆的动力传递的系统

    公开(公告)号：US4586583A

    公开(公告)日：1986-05-06

    申请号：US651545

    申请日：1984-09-17

    申请人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakakiyama

    发明人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakakiyama

    IPC分类号： B60K23/08

    CPC分类号： B60K23/08 ,  B60W2540/16

    摘要： A system for controlling a power transmission of a four-wheel drive vehicle powered by an engine has a transmission for transmitting the power of the engine to main driving wheels of the four-wheel drive vehicle, and a clutch for transmitting the power to auxiliary driving wheels. A hydraulic circuit and a solenoid operated valve are provided for operating the clutch.First sensors are provided for detecting the speed of the main and auxiliary driving wheels, respectively, and second sensors are provided for detecting depression of an accelerator pedal and depression of a brake pedal of the vehicle respectively. When a large difference between the speed of the wheels is detected, the clutch is engaged, and when a large acceleration and large deceleration dependent on the output of the first sensors are detected, the clutch is engaged for establishing the four-wheel drive.

    摘要翻译： 用于控制由发动机供电的四轮驱动车辆的动力传递的系统具有用于将发动机的动力传递到四轮驱动车辆的主驱动轮的变速器，以及用于将动力传递到辅助驾驶的离合器 车轮。 设有液压回路和电磁阀，用于操作离合器。 第一传感器分别用于检测主驱动轮和辅助驱动轮的速度，第二传感器分别用于检测加速踏板的下压和车辆的制动踏板的下压。 当检测到车轮的速度之间的大的差异时，离合器接合，并且当检测到依赖于第一传感器的输出的大的加速度和大的减速度时，离合器接合以建立四轮驱动。

    System for controlling a transfer clutch of a four-wheel drive vehicle
    8.
    发明授权
    System for controlling a transfer clutch of a four-wheel drive vehicle 失效
    用于控制四轮驱动车辆的转移离合器的系统

    公开(公告)号：US4804059A

    公开(公告)日：1989-02-14

    申请号：US101057

    申请日：1987-09-25

    申请人： Ryuzo Sakakiyama

    发明人： Ryuzo Sakakiyama

    IPC分类号： B60K17/348 ,  B60K23/08 ,  B60K31/00

    CPC分类号： B60K23/0808

    摘要： A four-wheel drive vehicle has a transmission, main drive wheels operatively connected to an output shaft of the transmission, auxiliary drive wheels, and a transfer clutch for transmitting output of the transmission to the auxiliary drive wheels. A control system is provided with a detector for detecting speed ratio of front-wheel speed and rear-wheel speed and for producing a speed ratio signal, which represents steering operation of the vehicle and for producing a steering angle signal. A control unit is responsive to the steering angle signal for controlling torque of the transfer clutch so as to cause the transfer clutch to slip in dependency on the steering angle signal.

    摘要翻译： 四轮驱动车辆具有变速器，主驱动轮可操作地连接到变速器的输出轴，辅助驱动轮和用于将变速器的输出传递到辅助驱动轮的转移离合器。 控制系统设置有用于检测前轮速度和后轮速度的速比的检测器，并且用于产生表示车辆的转向操作并产生转向角度信号的速比信号。 控制单元响应转向角信号来控制转移离合器的转矩，从而根据转向角信号使转移离合器滑动。

    Electromagnetic clutch control system for automobiles
    9.
    发明授权
    Electromagnetic clutch control system for automobiles 失效
    汽车电磁离合器控制系统

    公开(公告)号：US4730711A

    公开(公告)日：1988-03-15

    申请号：US768889

    申请日：1985-08-23

    申请人： Ryuzo Sakakiyama

    发明人： Ryuzo Sakakiyama

    IPC分类号： B60W10/02 ,  B60W10/04 ,  F16D37/02 ,  F16D48/06 ,  B60K41/28 ,  B60K41/02

    CPC分类号： F16D37/02 ,  F16D48/064 ,  F16D2037/001 ,  F16D2037/002 ,  F16D2500/10412 ,  F16D2500/3067 ,  F16D2500/3108 ,  F16D2500/3144 ,  F16D2500/31466 ,  F16D2500/7027 ,  F16D2500/7041 ,  F16D2500/70418 ,  Y10T477/6428

    摘要： A system for controlling an electromagnetic clutch of an engine for a motor vehicle having a transmission. The system has various sensors such as an engine speed sensor, a vehicle speed sensor for detecting low vehicle speed, an accelerator pedal position sensor for detecting the acceleration of the engine, and a selector lever position sensor. The system has computing means for determining the clutch current at the beginning of the engagement of the electromagnetic clutch. The clutch current is determined such that a large clutch current is supplied at lower engine speed, and a small clutch current is supplied at higher engine speed at the beginning of the engagement of the clutch.

    摘要翻译： 一种用于控制具有变速器的机动车辆的发动机的电磁离合器的系统。 该系统具有各种传感器，例如发动机速度传感器，用于检测低车速的车速传感器，用于检测发动机加速度的加速器踏板位置传感器和选档杆位置传感器。 该系统具有用于在电磁离合器接合开始时确定离合器电流的计算装置。 确定离合器电流使得以较低的发动机转速提供大的离合器电流，并且在离合器的接合开始时以更高的发动机转速提供小的离合器电流。