Hydraulic system
    3.
    发明授权

    公开(公告)号:US10895290B2

    公开(公告)日:2021-01-19

    申请号:US15447823

    申请日:2017-03-02

    IPC分类号: F16D48/06 F16D48/02 F16D48/00

    摘要: A hydraulic system includes a normally open-type hydraulic clutch which connects or disconnects a power transmission line between an engine and a wheel, an actuator which supplies a hydraulic pressure to the hydraulic clutch, an oil flow path which connects the actuator to the hydraulic clutch, a valve member which is provided on the oil flow path and which enables to switch between an open state where the oil flow path communicates and a closed state where the oil flow path closes, a hydraulic pressure sensor which is provided on the oil flow path, and a bypass flow path which bypasses the valve member. A one-way valve, which permits a supply of a hydraulic pressure from an actuator side to a hydraulic clutch side and which shuts off a supply of a hydraulic pressure from the hydraulic clutch side to the actuator side, is provided on the bypass flow path.

    METHOD FOR CALIBRATING A CHARACTERISTIC MAP OF A DRIVE TRAIN OF A WORKING MACHINE AND WORKING MACHINE

    公开(公告)号:US20200324771A1

    公开(公告)日:2020-10-15

    申请号:US16769600

    申请日:2018-11-15

    摘要: A method for calibrating a characteristic diagram for a drive-train of a working machine, which contains a brake pedal characteristic of a brake system and a clutch characteristic of a drive clutch, in which an opening point at which the drive clutch is disengaged when a brake pedal of the brake system is actuated as a function of a pedal path, and/or a closing point at which the drive clutch is engaged when the brake pedal is released as a function of the pedal path, is calibrated. When the brake pedal is actuated and/or released an actual rotational speed profile of the drive-train is determined, the actual rotational speed profile determined is compared with a stored corresponding target rotational speed profile, and the opening point and/or closing point of the drive clutch is adapted to minimize deviation of the actual rotational speed profile from the target rotational speed profile.

    Pressure testing of well servicing systems

    公开(公告)号:US10378335B2

    公开(公告)日:2019-08-13

    申请号:US14198736

    申请日:2014-03-06

    摘要: An apparatus and methods for testing and pumping through a well servicing system are provided. The apparatus includes a drive mechanism and an actuation system. The actuation system is coupled to the drive mechanism for selectively engaging the drive mechanism to a drive train of the well servicing system's pumping equipment for pressure testing and low rate pumping of the well servicing system without using the primary mover of the pumping equipment. A method for hydrostatic pressure testing of the well servicing system includes putting a transmission of the drive train into neutral and containing the well servicing system, then engaging the drive mechanism to the drive train and activating the drive mechanism to drive the drive train for pumping and compressing test fluid into the well servicing system without using the primary mover. And a method for low rate pumping of an open well servicing system includes putting the transmission of the drive train into neutral, engaging the drive mechanism to the drive train, and activating the drive mechanism to drive the drive train for pumping fluid into the well servicing system at a predetermined flow rate without using the primary mover.

    METHODS AND SYSTEMS FOR A VEHICLE AIR CONDITIONING SYSTEM
    9.
    发明申请
    METHODS AND SYSTEMS FOR A VEHICLE AIR CONDITIONING SYSTEM 审中-公开
    一种车辆空调系统的方法和系统

    公开(公告)号:US20170015176A1

    公开(公告)日:2017-01-19

    申请号:US14801523

    申请日:2015-07-16

    IPC分类号: B60H1/00 F16D48/00

    摘要: Methods and systems are provided for adjusting operation of an automotive air conditioning system including a pressure sensor positioned within a compression chamber. In one example, a method may include adjusting operation of the air conditioning system based on one or more parameters of a compressor operation including a compressor inlet pressure, a compressor outlet pressure, and a compressor speed, that are determined based on output from the pressure sensor positioned within the compression chamber.

    摘要翻译: 提供了用于调节包括​​位于压缩室内的压力传感器的汽车空调系统的操作的方法和系统。 在一个示例中,方法可以包括基于包括压缩机入口压力,压缩机出口压力和压缩机速度的压缩机操作的一个或多个参数调整空调系统的操作,所述压缩机入口压力,压缩机出口压力和压缩机速度是基于来自压力的输出 传感器位于压缩室内。