公开(公告)号：US5269557A

公开(公告)日：1993-12-14

申请号：US783183

申请日：1991-10-28

申请人： Tetsuro Butsuen ,  Yasunori Yamamoto ,  Tohru Yoshioka

发明人： Tetsuro Butsuen ,  Yasunori Yamamoto ,  Tohru Yoshioka

IPC分类号： B60G17/015 ,  F16F9/46 ,  B60G11/26

CPC分类号： F16F9/468 ,  B60G17/015 ,  B60G2400/10 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2400/41 ,  B60G2400/518 ,  B60G2400/82 ,  B60G2400/90 ,  B60G2400/91 ,  B60G2500/10 ,  B60G2600/184

摘要： In a suspension system for a vehicle comprising a shock absorber of which damping force characteristics can be changed into four or more characteristics, detecting means detect the oscillation frequency range of the sprung member of the vehicle and a bumpy road. From the four or more damping force characteristics of the shock absorber, the number of characteristics on the higher level side are limited to two or so when the sprung member is in a low frequency oscillation range, that of the characteristics on the lower level side are limited to two or so when the sprung member is in a high frequency oscillation range, and that of the characteristics on the medium level side are limited to two or so when a road is bumpy. The damping force characteristic of the shock absorber is selected and changed on the basis of a given control rule only within the limited damping force characteristics. Thus, it is possible to prevent noise and oscillation from being caused by the large change of the damping force characteristic. Furthermore, there can be obtained comfortableness to ride in and stability on a high level.

摘要翻译： 在一种用于车辆的悬架系统中，检测装置检测车辆弹簧构件和颠簸路的振荡频率范围，该缓冲器包括阻尼力特性可以改变为四个或更多特性的减震器。 从减震器的四个以上的阻尼力特性来看，当弹簧构件处于低频振荡范围时，较高侧的特性数量被限制在两个左右，而下一侧的特性的数量是 当弹簧构件处于高频振荡范围时限制为两个左右，而当路面颠簸时，中等水平侧的特性被限制在两个左右。 基于给定的控制规则，仅在有限的阻尼力特性内选择和改变减震器的阻尼力特性。 因此，可以防止噪声和振动由阻尼力特性的大的变化引起。 此外，可以获得在高水平上的舒适性和稳定性。

公开(公告)号：US5203584A

公开(公告)日：1993-04-20

申请号：US686794

申请日：1991-04-17

申请人： Tetsuro Butsuen ,  Hiroshi Uchida ,  Tohru Yoshioka ,  Yasunori Yamamoto ,  Shinichiro Yamashita

发明人： Tetsuro Butsuen ,  Hiroshi Uchida ,  Tohru Yoshioka ,  Yasunori Yamamoto ,  Shinichiro Yamashita

IPC分类号： B60G17/0165

CPC分类号： B60G17/0165 ,  B60G2400/102 ,  B60G2400/204 ,  B60G2400/34 ,  B60G2400/41 ,  B60G2400/50 ,  B60G2500/10 ,  B60G2600/184 ,  B60G2600/20 ,  B60G2800/22 ,  B60G2800/916

摘要： A suspension system of a vehicle which judges the direction of a damping force of a shock absorber of damping force characteristic variable type, provided between the sprung member and the unsprung member, either oscillation-stimulating direction or oscillation-restraining direction with respect to vertical osciallation of the sprung member, and it also judges the size of the damping force of the shock absorber. The damping force characteristic of the shock absorber is set higher when it is larger than the predetermined value and it is set lower when it is less than the predertemined value. The predetermined value can be changed according to the road surface, oscillation-restraining energy becomes larger than the oscillation-stimulating energy thereby. Therefore, improvement of the comfortableness to ride in and running stability can be planned and also, noise and oscillation caused by unnecessary changes of the damping force characteristic of the shock absorber in a high oscillation frequency range due to road bumps can be reduced.

摘要翻译： 一种车辆的悬架系统，其判断弹簧构件与簧下构件之间设置的阻尼力特性可变型减振器的阻尼力方向，相对于垂直振荡的振荡刺激方向或振动抑制方向 并且还判断减震器的阻尼力的大小。 当减震器的阻尼力特性大于预定值时，该减震器的特性被设定得较高，并且当其小于预先设定的值时，其设定得较低。 可以根据路面来改变预定值，因此，抑制振荡的能量变得比振动刺激能量大。 因此，能够提高乘坐稳定性和运行稳定性的舒适性，并且可以减少由于路面颠簸引起的在高振荡频率范围内的减震器的阻尼力特性的不必要的变化引起的噪声和振动。

公开(公告)号：US5172929A

公开(公告)日：1992-12-22

申请号：US783137

申请日：1991-10-28

申请人： Tetsuro Butsuen ,  Yasunori Yamamoto ,  Tohru Yoshioka

发明人： Tetsuro Butsuen ,  Yasunori Yamamoto ,  Tohru Yoshioka

IPC分类号： B60G17/015 ,  F16F9/46

CPC分类号： B60G17/015 ,  F16F9/468 ,  B60G2400/10 ,  B60G2400/104 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2400/41 ,  B60G2400/518 ,  B60G2400/82 ,  B60G2400/90 ,  B60G2400/91 ,  B60G2500/10 ,  B60G2600/02 ,  B60G2800/24

摘要： In a suspension system for a vehicle comprising a shock absorber of which damping force characteristic can be changed into three or more characteristics, the predetermined running state of the vehicle is detected by detecting means and there is limited to two or so the number of the damping force characteristics to be selected from the three or more characteristics of the shock absorber according to the running state. The damping force characteristic of the shock absorber is selected and changed on the basis of a given control rule only within the limited damping force characteristics. In addition, the threshold of the control rule is changed such that the damping force characteristic of the shock absorber can easily be changed into the higher or lower level side according to the rate of change in the predetermined running state. Thus, it is possible to prevent noise and oscillation from being caused by the large change of the damping force characteristic. Furthermore, there can be obtained comfortableness to ride in and stability on a high level.

摘要翻译： 在一种用于车辆的悬架系统中，其特征在于阻尼力特性可以改变为三个或更多个特征的减震器，通过检测装置检测车辆的预定行驶状态，并且限制了两个或更多个阻尼 根据运行状态从减震器的三个或更多个特性中选择力特性。 基于给定的控制规则，仅在有限的阻尼力特性内选择和改变减震器的阻尼力特性。 此外，改变控制规则的阈值，使得减震器的阻尼力特性可以根据预定行驶状态的变化率容易地变成高级或低级侧。 因此，可以防止噪声和振动由阻尼力特性的大的变化引起。 此外，可以获得在高水平上的舒适性和稳定性。

公开(公告)号：US5574644A

公开(公告)日：1996-11-12

申请号：US396943

申请日：1995-03-01

申请人： Tetsuro Butsuen ,  Tohru Yoshioka

发明人： Tetsuro Butsuen ,  Tohru Yoshioka

IPC分类号： B60R21/00 ,  B60K31/00 ,  B60Q1/52 ,  B60T7/12 ,  B60T7/22 ,  B60T8/172 ,  B60T8/1761 ,  B60T8/32 ,  B60T8/48 ,  B60W30/00 ,  B60W30/09 ,  B60W50/14 ,  G01S13/93 ,  G01S15/93 ,  G01S17/93 ,  B60T8/58

CPC分类号： G01S13/9303 ,  B60K31/0008 ,  B60Q9/008 ,  B60T7/22 ,  B60T8/4809 ,  B60W2050/143

摘要： An automatic brake control system produces a warning before automatically making the braking action of a driving vehicle according to the velocities of the driving vehicle and the vehicle ahead. The system calculates the desired vehicle distance according to the velocities of the driving vehicle and the vehicle ahead, and sets a warning distance which is longer than the desired vehicle distance. The warning distance is set in accordance with the driver's feeling. According to the present invention, the system is prevented from producing undesirable warning.

公开(公告)号：US5401052A

公开(公告)日：1995-03-28

申请号：US868852

申请日：1992-04-16

申请人： Tohru Yoshioka ,  Tetsuro Butsuen ,  Yasunori Yamamoto

发明人： Tohru Yoshioka ,  Tetsuro Butsuen ,  Yasunori Yamamoto

IPC分类号： B60G17/018 ,  B60G17/08 ,  B60G17/015

CPC分类号： B60G17/08 ,  B60G17/018 ,  B60G2202/42 ,  B60G2400/102 ,  B60G2400/204 ,  B60G2400/41 ,  B60G2400/5182 ,  B60G2400/82 ,  B60G2400/822 ,  B60G2500/10 ,  B60G2500/40 ,  B60G2600/02 ,  B60G2600/16 ,  B60G2800/916

摘要： A vehicle suspension device includes a shock absorber disposed between a sprung portion and an unsprung portion of a vehicle for each of the vehicle wheels, a damping force changing device for changing a damping characteristic of the shock absorber, a detecting device for detecting a difference in a damping force among the shock absorbers for respective wheels, and a control device for controlling the damping characteristic of the shock absorber so as to restrict the difference in the damping force among the wheels when the vehicle is in a specific running condition. Through the use of such a vehicle suspension device, diagonal vibration can be suppressed, improved running stability can be obtained and riding comfort can be improved.

摘要翻译： 车辆悬挂装置包括：设置在车辆的每个车轮的弹簧部分和簧下部分之间的减震器，用于改变减震器的阻尼特性的阻尼力改变装置，用于检测减震器的差异的检测装置 用于各个车轮的减震器之间的阻尼力，以及用于控制减震器的阻尼特性的控制装置，以便当车辆处于特定行驶状态时，限制车轮之间的阻尼力的差异。 通过使用这种车辆悬架装置，可以抑制对角振动，可以获得改善的行驶稳定性并且可以提高乘坐舒适性。

公开(公告)号：US5400245A

公开(公告)日：1995-03-21

申请号：US180538

申请日：1994-01-12

申请人： Tetsuro Butsuen ,  Hiroshi Uchida ,  Tohru Yoshioka

发明人： Tetsuro Butsuen ,  Hiroshi Uchida ,  Tohru Yoshioka

IPC分类号： B60G17/015 ,  B60G17/0165 ,  B60G17/018 ,  B60G17/08 ,  F16F9/50 ,  B60G17/06

CPC分类号： B60G17/08 ,  B60G17/0165 ,  B60G17/018 ,  B60G2600/184

摘要： A suspension system of a vehicle for calculating a product of the absolute speed zs of the sprung member and the relative speed zs-zu between the sprung member and the unsprung member and for controlling the damping force characteristic of the shock absorber to be higher if that product is more than the predetermined value and to be lower if the product is less than that value. An insensible range is formed for restricting switching of the damping force characteristic when .vertline.zs.vertline. and .vertline.zs-zu.vertline. are less than the predetermined value .delta.z, .delta.r, so that the damping force characteristic of the shock absorber is kept lower if .vertline.zs.vertline.>.delta.z and .vertline.zs-zu.vertline. or .vertline.zs-zu.vertline. .delta.z and .vertline.zs-zu.vertline. or .vertline.zs-zu.vertline.

摘要翻译： 一种用于计算弹簧构件的绝对速度zs和簧簧构件与簧下构件之间的相对速度zs-zu的乘积的悬架系统，并且用于控制减震器的阻尼力特性如果 产品超过预定值，如果产品小于该值，则产品将低于该值。 当| zs |时，形成用于限制阻尼力特性的切换的不可见范围 和| zs-zu | 小于预定值δz，delta r，使得如果| zs |> zz | | zs-zu |则减震器的阻尼力特性保持较低。 或| zs-zu | delta z和| zs-zu |则保持较高 或| zs-zu |

公开(公告)号：US5295705A

公开(公告)日：1994-03-22

申请号：US987176

申请日：1992-12-08

申请人： Tetsuro Butsuen ,  Tohru Yoshioka ,  Yasunori Yamamoto

发明人： Tetsuro Butsuen ,  Tohru Yoshioka ,  Yasunori Yamamoto

IPC分类号： B60G17/015 ,  B60G17/08 ,  F16F9/46 ,  F16F9/44

CPC分类号： F16F9/462 ,  B60G17/08 ,  F16F9/467 ,  B60G2800/916

摘要： Disposed between a sprung element and an unsprung element is a shock absorber of multi-degree variable-damping-coefficient type. The change control of the damping coefficient is carried out so that an actual damping force generated by the shock absorber can harmonize with a target damping force, Fa. The foregoing target damping force, Fa, as functions of the sprung vertical displacement velocity Xs and the unsprung vertical displacement velocity Xu, is obtained by the formula: Fa=-Xs.multidot.gs-Xu.multidot.gu, wherein both gs and gu are coefficients and the relations of gs>0; gu.gtoreq.0 hold. Thus, while controlling the sprung vertical motion, cushioning action of the wheels can be enhanced to improve traveling stabilization.

摘要翻译： 在弹簧元件和簧下元件之间设置的是多度可变阻尼系数型的减震器。 执行阻尼系数的变化控制，使得由减震器产生的实际阻尼力可以与目标阻尼力Fa协调。 上述目标阻尼力Fa作为弹簧垂直位移速度Xs和簧下垂直位移速度Xu的函数，通过下式获得：Fa = -Xs * gs-Xu * gu，其中gs和gu都是系数， gs> 0的关系; gu> = 0 hold。 因此，在控制弹簧垂直运动的同时，可以提高车轮的缓冲作用，以改善行驶稳定性。

公开(公告)号：US5193844A

公开(公告)日：1993-03-16

申请号：US697883

申请日：1991-05-09

申请人： Tetsuro Butsuen ,  Tohru Yoshioka ,  Hiroshi Uchida ,  Yasunori Yamamoto

发明人： Tetsuro Butsuen ,  Tohru Yoshioka ,  Hiroshi Uchida ,  Yasunori Yamamoto

IPC分类号： B60G17/08

CPC分类号： B60G17/08 ,  B60G2400/102 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2400/41 ,  B60G2500/102 ,  B60G2800/22 ,  B60G2800/916

摘要： In a suspension system of a vehicle which the damping force characteristic is changed into three or more characteristics, the damping force characteristic is changed step by step when the damping force characteristic selected by a given control rule is different from the damping force characteristic at that moment in several steps. Also, the running state is detected by detecting means and the damping force characteristic to be selected is limited to two or so from three or more characteristics according to the vehicle running state. The damping force characteristic is changed only within the above selected damping force characteristics based on a given control rule. Through the above, noise and oscillation caused by large changes of the damping force characteristic can be lowered.

摘要翻译： 在阻尼力特性变为三个以上特性的车辆的悬架系统中，当由给定控制规则选择的阻尼力特性与当时的阻尼力特性不同时，阻尼力特性逐步改变 在几个步骤。 此外，通过检测装置检测行驶状态，根据车辆行驶状态从三个以上的特性将所选择的阻尼力特性限制在两个左右。 基于给定的控制规则，阻尼力特性仅在上述选择的阻尼力特性内改变。 通过上述，可以降低由阻尼力特性的大变化引起的噪声和振动。