公开(公告)号：US3898913A

公开(公告)日：1975-08-12

申请号：US40046473

申请日：1973-09-24

Applicant: BENDIX CORP

Inventor： HENDRICKSON RICHARD T ,  LEWIS RICHARD L ,  EWALD JEROME T ,  BACH LLOYD G ,  HICKNER GEORGE B

IPC: B60T7/12 ,  B60T13/16 ,  B60T13/68 ,  F15B13/044 ,  F15B11/10 ,  F15B13/04

CPC classification number: B60T7/12 ,  B60T13/161 ,  B60T13/686

Abstract: An electrically actuated hydraulic brake booster is disclosed which is adapted for use with an automatic brake control system having a device for sensing the distance and relative velocity between vehicles and for automatically actuating the brakes of the vehicle when the automatic control system senses a relative velocity and distance which indicates that a collision is imminent. The electrically actuated brake booster includes a solenoid-operated spool valve which operates in series with the spool valve in the brake booster. The solenoid-actuated valve, when actuated, terminates communication between the booster pressure chamber and pump return, and initiates communication between the booster chamber and the pump outlet. One embodiment of the invention uses a proportional solenoid valve, which exerts a force on the spool valve in proportion to the electrical current transmitted to the solenoid. A second embodiment of the invention uses a two-position solenoid valve to control the spool valve and a second normally open solenoid valve to close a supplemental passage between the solenoid-operated spool valve and the booster pressure chamber. Actuation of the solenoid controlling the spool valve causes a fast brake pressure build rate and actuation of both solenoids causes a slow build up in brake pressure.

Abstract translation: 公开了一种电动液压制动助力器，其适用于具有用于感测车辆之间的距离和相对速度的装置的自动制动控制系统，以及当自动控制系统感测到相对速度时自动致动车辆的制动器， 表示碰撞即将来临的距离。 电动制动助力器包括与制动助力器中的滑阀串联操作的电磁操作滑阀。 电磁阀在启动时终止增压压力室和泵返回之间的连通，并启动增压室和泵出口之间的连通。 本发明的一个实施例使用比例电磁阀，其与传导到螺线管的电流成比例地在滑阀上施加力。 本发明的第二实施例使用两位置电磁阀来控制滑阀和第二常开电磁阀，以关闭电磁操作滑阀和助力器压力室之间的辅助通道。 控制滑阀的电磁阀的启动导致快速的制动压力建立速度，并且两个螺线管的致动导致制动压力的缓慢增加。

公开(公告)号：US3517907A

公开(公告)日：1970-06-30

申请号：US3517907D

申请日：1967-09-25

Applicant: BENDIX CORP

Inventor： BACH LLOYD G

IPC: F16K7/06 ,  F16K7/07

CPC classification number: F16K7/06 ,  Y10T29/49428 ,  Y10T29/49806

公开(公告)号：US3416548A

公开(公告)日：1968-12-17

申请号：US52722666

申请日：1966-02-14

Applicant: BENDIX CORP

Inventor： BACH LLOYD G ,  CLAXTON WILLIAM B

IPC: F16K17/40

CPC classification number: F16K13/06 ,  Y10T137/1647 ,  Y10T137/1654

公开(公告)号：US3692039A

公开(公告)日：1972-09-19

申请号：US3692039D

申请日：1970-12-21

Applicant: BENDIX CORP

Inventor： EWALD JEROME T ,  BACH LLOYD G ,  LEWIS RICHARD L

IPC: B60T13/14 ,  F15B1/027 ,  G05D16/10

CPC classification number: B60T13/148 ,  F15B1/027 ,  Y10T137/2612 ,  Y10T137/2663 ,  Y10T137/7764

Abstract: A charging valve is disclosed which controls flow of fluid into an accumulator used with a closed center hydraulic brake booster in a vehicle hydraulic system. The charging valve includes a back pressure producing device which creates a fluid pressure level within the charging valve sufficiently high to charge the accumulator while permitting sufficient fluid flow through the charging valve to operate the power steering gear of the vehicle. A shutoff valve is provided in the passage between the inlet of the charging valve and the accumulator. A second valve within the housing maintains the shutoff valve open as long as the fluid pressure level in the accumulator is below a predetermined value, but permits the shutoff valve to close when the fluid pressure level in the accumulator attains the predetermined value. The second valve also operates the back pressure producing device which restricts fluid flow between the inlet and the outlet when the fluid pressure level in the accumulator is below the predetermined value, but permits substantially unrestricted flow between the inlet and outlet of the charging valve when the fluid pressure level in the accumulator attains the predetermined value.

Abstract translation: 公开了一种充气阀，其控制流体进入与车辆液压系统中的闭合中心液压制动助力器一起使用的蓄能器中的流体。 充气阀包括背压产生装置，其在充气阀内产生足够高的流体压力水平以对蓄能器充电，同时允许足够的流体流过充气阀以操作车辆的动力转向器。 在充气阀和蓄能器的入口之间的通道中设置截止阀。 只要蓄能器中的液压水平低于预定值，外壳内的第二阀就保持关闭阀打开，但当蓄能器中的液压水平达到预定值时允许关闭阀关闭。 第二阀还操作背压产生装置，其当储液器中的流体压力水平低于预定值时限制入口和出口之间的流体流动，但当充气阀的入口和出口之间允许基本上不受限制的流动时 蓄能器中的液压水平达到预定值。

公开(公告)号：US3688498A

公开(公告)日：1972-09-05

申请号：US3688498D

申请日：1970-09-21

Applicant: BENDIX CORP

Inventor： BACH LLOYD G ,  EWALD JEROME T ,  FULMER KEITH H

IPC: B60T13/14 ,  B60T13/16 ,  F15B13/09

CPC classification number: B60T13/143 ,  B60T13/148 ,  B60T13/162

Abstract: A hydraulic brake booster is disclosed which provides a power assist to the vehicle operator during a brake application. Pressurized fluid is normally supplied to the booster from the vehicle''s power steering pump. However, an electric pump is provided to supply fluid to the booster when the power steering pump malfunctions. Flow of fluid between the power steering pump and the booster is controlled by an operator-actuated spool valve which is shiftable from a first position in which the booster chamber is communicated to a fluid reservoir to a second position in which the fluid communication between the chamber and the reservoir is terminated and flow of fluid between the power steering pump and the chamber is initiated. However, when the electric pump is actuated, a stop piston prevents movement of the spool valve. Fluid at a relatively low pressure then circulates through the booster chamber and through internal passages within the spool valve. When the operator applies the brakes of the vehicle while the electric pump is operating, a cap member which is slidably mounted on the spool valve is shifted to a position impeding flow of fluid through the passages within the spool valve, thereby increasing the fluid pressure level within the chamber to apply the brakes of the vehicle.

Abstract translation: 公开了一种液压制动助力器，其在制动应用期间向车辆操作者提供动力辅助。 加压流体通常从车辆的动力转向泵提供给助力器。 然而，当动力转向泵发生故障时，提供电动泵以向增压器供应流体。 动力转向泵和增压器之间的流体流由操作者致动的滑阀控制，该滑阀可从增压室与流体容器连通的第一位置移动到第二位置，在第二位置，腔室之间的流体连通 并且储存器被终止，并且启动在动力转向泵和腔室之间的流体流动。 然而，当电动泵被致动时，停止活塞阻止滑阀的移动。 相对低压的流体然后循环通过增压室并通过滑阀内的内部通道。 当操作员在电动泵运行时施加车辆的制动器时，可滑动地安装在滑阀上的盖构件被转移到阻碍流体流过滑阀内的通道的位置，从而增加流体压力水平 在车厢内施加车辆的制动器。