公开(公告)号：US4948164A

公开(公告)日：1990-08-14

申请号：US302975

申请日：1989-01-30

申请人： Sunao Hano ,  Naoto Fukushima ,  Yukio Fukunaga ,  Yohsuke Akatsu ,  Masaharu Satoh ,  Itaru Fujimura

发明人： Sunao Hano ,  Naoto Fukushima ,  Yukio Fukunaga ,  Yohsuke Akatsu ,  Masaharu Satoh ,  Itaru Fujimura

IPC分类号： B60G17/016 ,  B60G11/26

CPC分类号： B60G17/0163 ,  B60G2202/154 ,  B60G2400/102 ,  B60G2400/104 ,  B60G2400/1042 ,  B60G2400/106 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2400/41 ,  B60G2400/63 ,  B60G2500/30 ,  B60G2600/02 ,  B60G2600/26 ,  B60G2800/012 ,  B60G2800/014 ,  B60G2800/702

摘要： An actively controlled suspension system which can perform precise control of suspension characteristics with satisfactory compensation of phase delay caused in a control system. The actively controlled suspension system which can successfully avoid influence of the shifting of the gravity center of a vehicle body caused by a variation of load on the vehicle. The actively controlled suspension system employs more than one lateral acceleration sensor which are oriented at axially or longitudinally shifted positions to each other. Based on the outputs of respective lateral acceleration sensors, anti-rolling suspension control signals are produced for controlling suspension characteristics of the left- and right-sides of a suspension system.

公开(公告)号：US4934732A

公开(公告)日：1990-06-19

申请号：US254645

申请日：1988-10-07

申请人： Yukio Fukunaga ,  Naoto Fukushima ,  Yohsuke Akatsu ,  Sunao Hano ,  Masaharu Satoh

发明人： Yukio Fukunaga ,  Naoto Fukushima ,  Yohsuke Akatsu ,  Sunao Hano ,  Masaharu Satoh

IPC分类号： B60G17/015 ,  B60G17/018 ,  B60G17/056 ,  B60G23/00

CPC分类号： B60G17/018

摘要： A suspension control system introduces capability of automatically adjusting sensibility of attitude change depending upon a vehicular speed with maintaining capability of manual adjustment of the sensibility for the vehicular attitude change. The actively controlled suspension system employs a pressure control valve which is operable in response to a control signal and controls fluid pressure in the fluid chamber of a hydraulic cylinder as a replacement of the conventional hydraulic shock absorber. The pressure control valve is associated with a controller which detects bounding and rebounding acceleration and stroke speed in bounding and rebounding motion for detecting vehicular attitude change and deriving a control signal to operate the pressure control valve to suppress attitude change. The controller is response to a vehicle speed indicative parameter for adjusting sensitivity of attitude change and whereby adjusting suspension control characteristics.

公开(公告)号：US4872701A

公开(公告)日：1989-10-10

申请号：US172419

申请日：1988-03-24

申请人： Yohsuke Akatsu ,  Naoto Fukushima ,  Yukio Fukunaga ,  Sunao Hano ,  Masaharu Satoh

发明人： Yohsuke Akatsu ,  Naoto Fukushima ,  Yukio Fukunaga ,  Sunao Hano ,  Masaharu Satoh

IPC分类号： B60G17/00 ,  B60G17/015 ,  B60G17/018 ,  B60G17/056 ,  B03

CPC分类号： B60G17/018 ,  B60G2204/80

摘要： A suspension control system for an automotive vehicle is designed for effectively suppressing pitching motion and whereby regulating vehicular attitude. The suspension control system monitors pitching moment to be exerted on the vehicle for adjusting response characteristics in pitching-suppressive control depending upon the magnitude of the pitching moment to be exerted. The suspension control system adjusts the response characteristics of the front and rear suspensions independently of each other according to preset pitching-suppressive control coefficients respectively for the front and rear suspensions, which are set depending upon the suspension characteristics and/or suspension geometory of the vehicle, to which the suspension control system is to be applied.

公开(公告)号：US4943084A

公开(公告)日：1990-07-24

申请号：US255560

申请日：1988-10-11

申请人： Yukio Fukunaga ,  Naoto Fukushima ,  Yohsuke Akatsu ,  Sunao Hano ,  Masaharu Satoh

发明人： Yukio Fukunaga ,  Naoto Fukushima ,  Yohsuke Akatsu ,  Sunao Hano ,  Masaharu Satoh

IPC分类号： B60G17/00 ,  B60G17/015 ,  B60G17/0185 ,  B60G17/056

CPC分类号： B60G17/0185 ,  B60G2400/104 ,  B60G2400/106 ,  B60G2400/41 ,  B60G2400/44 ,  B60G2400/50 ,  B60G2600/07 ,  B60G2600/18 ,  B60G2600/26 ,  B60G2600/72 ,  B60G2800/012 ,  B60G2800/014 ,  B60G2800/22 ,  B60G2800/24

摘要： A suspension control system detects acceleration exerted on the vehicular body and close to a predetermined critical value. When the acceleration greater than the predetermined critical value, total stiffness of the suspension system is adjusted to be smaller value to allow attitude change of the vehicle body in a predetermined magnitude. Therefore, rolling or pitching is caused as a sign that traction of the suspension tends to break. This makes a driver to recognize that the vehicular driving condition is near the critical condition.

摘要翻译： 悬架控制系统检测施加在车体上并接近预定临界值的加速度。 当加速度大于预定临界值时，悬架系统的总刚度被调节为较小的值，以允许车身的姿态改变为预定的大小。 因此，引起滚动或俯仰作为悬架的牵引力倾向于断裂的标志。 这使驾驶员认识到车辆驾驶状况接近危急状况。

公开(公告)号：US4888696A

公开(公告)日：1989-12-19

申请号：US176246

申请日：1988-03-31

申请人： Yohsuke Akatsu ,  Naoto Fukushima ,  Yukio Fukunaga ,  Sunao Hano ,  Masaharu Satoh

发明人： Yohsuke Akatsu ,  Naoto Fukushima ,  Yukio Fukunaga ,  Sunao Hano ,  Masaharu Satoh

IPC分类号： B60G17/00 ,  B60G17/015 ,  B60G17/016

CPC分类号： B60G17/016

摘要： An actively controlled automotive suspension system employs a factor representative of self-induced attitude change creative factor as a correction factor in attitude regulating suspension control. Suspension characteristics is controlled on the basis of rolling and/or pitching energy representing parameter. The correction factor representative of self-induced attitude change is derived on the basis of vehicular attitude change velocity for canceling the self-induced rolling and/or pitching. By canceling the self-induced rolling and/or pitching creative component from the rolling and/or pitching acceleration factor, higher rolling and/or pitching response characteristics can be provided so as to satisfactory high driving stability and riding comfort.

公开(公告)号：US4865347A

公开(公告)日：1989-09-12

申请号：US169201

申请日：1988-03-16

申请人： Naoto Fukushima ,  Yukio Fukunaga ,  Yohsuke Akatsu ,  Sunao Hano ,  Masaharu Satoh

发明人： Naoto Fukushima ,  Yukio Fukunaga ,  Yohsuke Akatsu ,  Sunao Hano ,  Masaharu Satoh

IPC分类号： B60G17/00 ,  B60G17/015 ,  B60G17/016 ,  B60G17/017 ,  B60G17/056

CPC分类号： B60G17/017 ,  B60G17/0162 ,  B60G2400/204 ,  B60G2400/206 ,  B60G2400/91 ,  B60G2600/14 ,  B60G2600/182

摘要： An actively controlled suspension system includes an anti-roll control loop which is responsive to lateral acceleration to be exerted on a vehicle, to adjust suspension characteristics. The control loop employed suspension system is variable of response characteristics to vehicular rolling depending upon the vehicle speed for varying anti-rolling suspension control characteristics. In a range of the vehicle speed, in which the greater loop gain of the control loop, causes significant and unacceptable level of self-induced lateral vibration, the gain is varied to be the smaller value than that in other vehicle speed range. Namely, since the greater gain may affect for causing self-induced lateral vibration in substantially low vehicle speed range, the gain may be adjusted to smaller value while vehicle speed is lower than a given value.

公开(公告)号：US5056811A

公开(公告)日：1991-10-15

申请号：US472443

申请日：1990-01-24

申请人： Yukio Fukunaga ,  Naoto Fukushima ,  Yohsuke Akatsu ,  Sunao Hano

发明人： Yukio Fukunaga ,  Naoto Fukushima ,  Yohsuke Akatsu ,  Sunao Hano

IPC分类号： F16F9/50 ,  B60G17/00 ,  B60G17/015 ,  B60G17/018 ,  B60G17/04 ,  B60G23/00

CPC分类号： B60G17/018

摘要： An actively controlled suspension system has two hydraulic systems for generating damping force against the vibration to be transmitted between a vehicle body and a suspension member. One of the hydraulic systems is designed for absorbing relatively high frequency vibration generally input from the suspension member for preventing vibration from the suspension member from being transmitted to the vehicle body. The other hydraulic system is active on relatively low frequency of vibration generally input from the vehicle body upon change of attitude of the vehicle body. The other hydraulic system generates a fluid pressure suppressing the attitude change. A pressure control valve and a fluid pressure source may be incorporated in the second hydraulic system so that they may not be active when aforementioned one of the hydraulic system is active.

摘要翻译： 主动控制的悬挂系统具有两个液压系统，用于产生抵抗在车身和悬架构件之间传递的振动的阻尼力。 液压系统中的一个被设计用于吸收通常从悬挂构件输入的相对高频振动，以防止来自悬挂构件的振动传递到车体。 另一个液压系统在车身姿态变化时通常从车体输入的相对较低的振动频率下起作用。 另一液压系统产生抑制姿态变化的流体压力。 压力控制阀和流体压力源可以结合在第二液压系统中，使得当上述液压系统中的一个有效时它们可能不起作用。

公开(公告)号：US4848790A

公开(公告)日：1989-07-18

申请号：US178066

申请日：1988-04-05

申请人： Yukio Fukunaga ,  Yoshiki Tsuda ,  Naoto Fukushima ,  Yohsuke Akatsu ,  Sunao Hano ,  Masaharu Sato

发明人： Yukio Fukunaga ,  Yoshiki Tsuda ,  Naoto Fukushima ,  Yohsuke Akatsu ,  Sunao Hano ,  Masaharu Sato

IPC分类号： B60G17/00 ,  B60G17/015 ,  B60G17/017 ,  B60G17/04 ,  B60K25/04 ,  F04B49/06

CPC分类号： B60G17/017 ,  F04B49/065 ,  B60G2500/02

摘要： A hydraulic pressure supply system includes a discharge rate variable fluid pump. The discharge rate of the fluid pump is controlled to vary depending upon the vehicle driving condition. In the control of the discharge rate of the fluid pump, greater discharge rate is ordered while the vehicle is running, than that during vehicle stopping condition.

公开(公告)号：US4967360A

公开(公告)日：1990-10-30

申请号：US266763

申请日：1988-11-03

申请人： Yukio Fukunaga ,  Naoto Fukushima ,  Yohsuke Akatsu ,  Sunao Hano ,  Masaharu Sato

发明人： Yukio Fukunaga ,  Naoto Fukushima ,  Yohsuke Akatsu ,  Sunao Hano ,  Masaharu Sato

IPC分类号： B60G17/00 ,  B60G17/015 ,  B60G17/017

CPC分类号： B60G17/017 ,  B60G2400/102 ,  B60G2400/104 ,  B60G2400/106 ,  B60G2400/252 ,  B60G2400/30 ,  B60G2500/30 ,  B60G2600/02 ,  B60G2600/26 ,  B60G2600/72 ,  B60G2800/20

摘要： An actively controlled suspension system introduces two-way mode operation in controlling suspension. A suspension control system operates in a normal mode for controlling fluid pressure in a hydraulic cylinder disposed between a vehicle body and a suspension member is adjusted depending upon the vehicle driving conditions in order to suppress vehicular attitude change, and a power OFF transition mode for controlling the fluid pressure toward a preset neutral pressure. The hydraulic circuit is constructed to maintain the pressure in the working chamber of the hydraulic cylinder at the neutral pressure while power is not supplied to control system.

公开(公告)号：US4865348A

公开(公告)日：1989-09-12

申请号：US167835

申请日：1988-03-04

申请人： Sunao Hano ,  Naoto Fukushima ,  Yukio Fukunaga ,  Yohsuke Akatsu ,  Hiroshi Yamanaka

发明人： Sunao Hano ,  Naoto Fukushima ,  Yukio Fukunaga ,  Yohsuke Akatsu ,  Hiroshi Yamanaka

IPC分类号： B60G17/04 ,  B60G17/00 ,  B60G17/015 ,  B60G17/017 ,  B60G17/056

CPC分类号： B60G17/017 ,  B60G2202/413 ,  B60G2400/252 ,  B60G2600/08 ,  B60G2600/26 ,  B60G2600/72

摘要： An actively controlled suspension system employs a shut-off valve which is responsive to a source pressure dropping below a predetermined level to shut-off communication between a pressure return line for returning the fluid pressure to the pressure source from a hydraulic cylinder. The shut-off valve is disposed in a drain line connecting a drain port of a spool valve assembly and the pressure source. By the presence of the shut-off valve, substantial pressure difference between the hydraulic cylinder side and pressure source side of the spool valve is not created. Therefore, no leakage through the spool valve occurs and whereby the pressure in the hydraulic cylinder can be maintained even when the source pressure becomes substantially low or zero.

摘要翻译： 主动控制的悬挂系统采用截止阀，该截止阀响应于低于预定水平的源压力，以切断用于将流体压力从液压缸返回到压力源的压力返回管线之间的连通。 截止阀设置在连接滑阀组件的排出口和压力源的排水管路中。 通过截止阀的存在，不会产生滑阀的液压缸侧和压力源侧之间的显着的压力差。 因此，不会发生通过滑阀的泄漏，并且即使当源压力变得基本上低或零时也能够维持液压缸中的压力。