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55 条记录 (耗时 0.035 秒)

    Hydraulic servo unit with solenoid operated valves having variable duty cycles
    1.
    发明授权
    Hydraulic servo unit with solenoid operated valves having variable duty cycles 失效
    带电磁阀的液压伺服单元具有可变的工作周期

    公开(公告)号：US5355772A

    公开(公告)日：1994-10-18

    申请号：US903723

    申请日：1992-06-24

    申请人： Takamichi Shimada ,  Yoshikazu Ishikawa ,  Kouji Yamaguchi

    发明人： Takamichi Shimada ,  Yoshikazu Ishikawa ,  Kouji Yamaguchi

    IPC分类号： F15B11/04 ,  F15B13/043 ,  F16H61/40 ,  F16H61/421 ,  F16H63/06 ,  F16H63/28 ,  F15B15/17 ,  F15B13/044

    CPC分类号： F16H61/425 ,  F16H61/42

    摘要： A hydraulic servo unit for changing the swash plate angle of a continuously variable transmission to vary its speed reduction ratio comprises a cylinder whose chamber is divided into a rod-side chamber and a head-side chamber by a piston slidably fitted therein. The rod-side chamber is supplied with working oil under predetermined hydraulic pressure through a first hydraulic pressure supply passage. A second hydraulic pressure supply passage is connected to the head-side chamber through a duty-cycle-controlled first solenoid-operated valve, and a drain hydraulic passage is connected to the second hydraulic pressure supply passage through a second duty-cycle-controlled solenoid-operated valve. The first and second solenoid-operated valves are simultaneously actuated with different duty cycles. The difference between the different duty ratios is varied to vary the rate at which the working oil flows into or out of the head-side chamber through the second hydraulic pressure supply passage, in a wide range from a very low rate to a high rate. The working oil can accurately be controlled especially in a very low rate range for operating the hydraulic servo unit at very low speed. Therefore, continuously variable transmission can precisely and smoothly be controlled for varying the speed reduction ratio.

    摘要翻译： 用于改变无级变速器的斜盘角度以改变其减速比的液压伺服单元包括一个气缸，其腔室通过可滑动地装配在其中的活塞分成杆侧室和头侧室。 杆侧室通过第一液压供给通道在预定液压下供给工作油。 第二液压供给通道通过占空比控制的第一电磁阀连接到头侧室，并且排水液压通道通过第二占空比控制螺线管连接到第二液压供给通道 操作阀。 第一和第二电磁阀同时由不同的占空比驱动。 改变不同占空比之间的差异，以便在从低速率到高速率的宽范围内改变工作油通过第二液压供给通道流入或流出头侧室的速率。 工作油可以精确地控制，特别是在非常低的速率范围内，以非常低的速度操作液压伺服单元。 因此，可以精确平稳地控制无级变速器，以改变减速比​​。

    Throttle valve control apparatus for internal combustion engine
    5.
    发明授权
    Throttle valve control apparatus for internal combustion engine 失效
    内燃机节流阀控制装置

    公开(公告)号：US4881428A

    公开(公告)日：1989-11-21

    申请号：US63398

    申请日：1987-06-18

    申请人： Yoshikazu Ishikawa ,  Kouji Yamaguchi ,  Kouji Sasajima

    发明人： Yoshikazu Ishikawa ,  Kouji Yamaguchi ,  Kouji Sasajima

    IPC分类号： F02D41/14 ,  F02D11/10 ,  F02D29/00 ,  F02D41/00 ,  F02D41/04 ,  F02D41/24

    CPC分类号： F02D41/2422 ,  F02D11/105 ,  F02D2009/0261 ,  F02D2011/103 ,  Y10T477/679 ,  Y10T477/68

    摘要： A vehicle engine throttle valve control apparatus whereby the actuation position of an accelerator pedal, the degree of opening of the throttle valve, and the position of the vehicle gear shift are detected. One of a plurality of different throttle valve target opening degree characteristics is then selected which corresponds to the current gear shift position, and the selected characteristic is used to set a target degree of opening for the throttle valve in accordance with the accelerator pedal position. The throttle valve is driven so as to make the actual degree of throttle opening become equal to the target value. Appropriate throttle control is thereby automatically performed each time a gear shift operation is executed, without intervention by the vehicle driver.

    摘要翻译： 检测加速器踏板的致动位置，节气门的开度和车辆档位的位置的车辆发动机节气门控制装置。 然后选择多个不同的节气门目标开度特性中的一个，其对应于当前换档位置，并且所选择的特性用于根据加速器踏板位置来设定节气门的目标开度。 节流阀被驱动以使实际的节气门开度等于目标值。 因此，在每次执行换档操作时都不会自动执行适当的节气门控制，而无需车辆驾驶员的干预。

    Throttle valve control system for an internal combustion engine
    6.
    发明授权
    Throttle valve control system for an internal combustion engine 失效
    内燃机节流阀控制系统

    公开(公告)号：US4799467A

    公开(公告)日：1989-01-24

    申请号：US73616

    申请日：1987-07-15

    申请人： Yoshikazu Ishikawa ,  Kouji Yamaguchi

    发明人： Yoshikazu Ishikawa ,  Kouji Yamaguchi

    IPC分类号： F02D11/10 ,  F02D41/14 ,  F02D9/02 ,  F02D41/04

    CPC分类号： F02D11/105 ,  F02D41/14 ,  F02D2011/102

    摘要： A throttle valve control system for an internal combustion engine sets a target manifold pressure for attaining a minimum fuel consumption rate in response to a detected engine rotational speed, and drives the throttle valve to a control opening determined so as to reduce the difference between the detected actual manifold pressure and the target manifold pressure. According to another feature, the system detects the operation position of the accelerator pedal and the throttle valve is driven to a control opening which is determined in accordance with the operation position of the accelerator pedal or the rate of change in the operation position of the accelerator pedal when the operation position or the rate of change in the operation position exceeds a predetermined value, respectively.

    摘要翻译： 用于内燃机的节流阀控制系统响应于检测到的发动机转速来设定目标歧管压力以获得最小燃料消耗率，并且将节气门驱动到被确定为控制开度以便减小检测到的差 实际歧管压力和目标歧管压力。 根据另一特征，系统检测加速器踏板的操作位置，并且将节气门驱动到根据加速踏板的操作位置确定的控制开口或加速器的操作位置的变化率 当操作位置或操作位置的变化率分别超过预定值时的踏板。

    Throttle valve control system for an internal combustion engine
    7.
    发明授权
    Throttle valve control system for an internal combustion engine 失效
    内燃机节流阀控制系统

    公开(公告)号：US4781162A

    公开(公告)日：1988-11-01

    申请号：US80924

    申请日：1987-08-03

    申请人： Yoshikazu Ishikawa ,  Kouji Yamaguchi

    发明人： Yoshikazu Ishikawa ,  Kouji Yamaguchi

    IPC分类号： F02D11/10 ,  F02D41/14 ,  F02D9/08

    CPC分类号： F02D11/105 ,  F02D41/14 ,  F02D2011/102

    摘要： A throttle valve control system for a vehicle-mounted internal combustion engine, whereby engine operating parameters relating to engine load are detected, and a target value of a first engine operating parameter is established in accordance with an engine rotational speed, for example a target value which will endure minimum fuel consumption. The throttle valve is driven towards a control opening angle which is determined such as to reduce an amount of deviation of an actual value of the first engine operating parameter from the target value, but is held below an upper limit opening angle which is determined in accordance with an engine operating parameter.

    摘要翻译： 一种用于车载内燃机的节气门控制系统，其中检测到与发动机负荷相关的发动机运转参数，并且根据发动机转速建立第一发动机运转参数的目标值，例如目标值 这将承受最低的燃油消耗。 节流阀朝着控制开度角被驱动，该控制开度角被确定为将第一发动机操作参数的实际值与目标值的偏差量减少，但是保持在低于根据目标值确定的上限开度角 具有发动机工作参数。

    Throttle valve control for internal combustion engine
    8.
    发明授权
    Throttle valve control for internal combustion engine 失效
    内燃机节流阀控制

    公开(公告)号：US4765296A

    公开(公告)日：1988-08-23

    申请号：US58915

    申请日：1987-06-05

    申请人： Yoshikazu Ishikawa ,  Kouji Yamaguchi ,  Takeo Suzuta

    发明人： Yoshikazu Ishikawa ,  Kouji Yamaguchi ,  Takeo Suzuta

    IPC分类号： F02D41/14 ,  F02D11/10 ,  F02D41/00 ,  F02D41/24

    CPC分类号： F02D11/105 ,  F02D41/2412 ,  F02D2011/102 ,  F02D2250/16

    摘要： A throttle valve control apparatus for a vehicle engine, whereby a reference degree of opening of the throttle valve is derived based on the accelerator pedal actuation position and is then corrected in accordance with vehicle operating conditions to obtain a target degree of opening of the throttle valve. An upper limit opening degree and a lower limit opening degree of the throttle valve are also derived, and if the target opening degree, which is obtained on the basis of the vehicle operating conditions, is found to be greater than the upper limit opening degree, then the upper limit opening degree is used as the target opening degree. Similarly, if the target opening degree, which is determined from the vehicle operating conditions, is less than the lower limit opening degree, then the lower limit opening degree is used as the target opening degree. The throttle valve is driven at a controlled drive speed so as to reduce any deviation between the actual degree of opening and the target degree of opening of the throttle valve.

    摘要翻译： 一种用于车辆发动机的节气门控制装置，由此基于加速器踏板致动位置导出节气门的基准开度，然后根据车辆操作条件进行校正，以获得节气门的目标开度 。 另外，导出节流阀的上限开度和下限开度，如果基于车辆运转条件求出的目标开度大于上限开度， 则使用上限开度作为目标开度。 类似地，如果从车辆运行条件确定的目标开度小于下限开度，则将下限开度用作目标开度。 节流阀以受控的驱动速度被驱动，以便减小实际的开度和节流阀的目标开度之间的任何偏差。