公开(公告)号：US11754067B2

公开(公告)日：2023-09-12

申请号：US17290477

申请日：2018-11-02

Applicant: QUANTUM SERVO PUMPING TECHNOLOGIES PTY LTD

Inventor： Darren Reukers ,  Peter Harding

IPC: F04B49/10 ,  F04B51/00

CPC classification number: F04B49/10 ,  F04B51/00 ,  F04B2201/0204 ,  F04B2201/0208 ,  F04B2201/0605 ,  F04B2201/0801 ,  F04B2201/0803 ,  F04B2203/0201 ,  F04B2205/03

Abstract: A pump including one or more pumping chambers, one or more drive mechanisms for driving the one or more pumping chambers and a logic arrangement. The first pumping chamber of the one or more pumping chambers has a first inlet check valve, a first outlet check valve and a first temperature sensor. The logic arrangement is configured to identify a leak by applying logic to at least resistance-data indicative of a resistance of the first pumping chamber to the driving and temperature-data at least based on output from the first temperature sensor.

公开(公告)号：US09759212B2

公开(公告)日：2017-09-12

申请号：US14944321

申请日：2015-11-18

Applicant: DANFOSS POWER SOLUTIONS INC.

Inventor： Kevin R. Lingenfelter ,  Alex Bruns ,  Christian Daley ,  Vince Ewald ,  Danny Wakefield

IPC: F15B11/16 ,  F04B49/22 ,  F04B1/32 ,  F04B49/06 ,  F04B49/08

CPC classification number: F04B49/22 ,  F04B1/324 ,  F04B49/065 ,  F04B49/08 ,  F04B2201/0204

Abstract: An electrical pressure control load sense system having a pump connected inline to an operator control spool valve and a compensation circuit. The system also has a plurality of sensors, at least one pressure transducer, a micro-processor, a fixed orifice, a proportional pressure relief valve, and a swashplate angle sensor.

公开(公告)号：US09133837B2

公开(公告)日：2015-09-15

申请号：US12081963

申请日：2008-04-24

Applicant: Mark David Anderson ,  Michael Anthony Spielman, Jr.

Inventor： Mark David Anderson ,  Michael Anthony Spielman, Jr.

IPC: F04B49/00

CPC classification number: F04B49/002 ,  F02D29/04 ,  F04B2201/0204 ,  F04B2201/1201 ,  F04B2201/1203 ,  F04B2203/0208 ,  F04B2203/0209

Abstract: A method of controlling a hydraulic system having a variable displacement pump operatively coupled to an engine. The method includes detecting a speed of the engine, and determining a desired power value of the pump. The method also includes identifying an allowable power value that may be expended by the pump at the detected speed. The method also includes selecting a pump power value. The selected pump power value is the lower of the allowable power value and the desired power value. The method further includes adjusting the pump to deliver the selected pump power value.

公开(公告)号：US20130064686A1

公开(公告)日：2013-03-14

申请号：US13637680

申请日：2011-02-24

Applicant: Gunter Galtz

Inventor： Gunter Galtz

IPC: F04B17/03

CPC classification number: F04B17/03 ,  F04B35/045 ,  F04B49/06 ,  F04B49/065 ,  F04B2201/0204 ,  F04B2203/0402

Abstract: A method for operating a vehicle heater dosing pump for conveying fuel having a piston which can be moved back and forth between a start position and an end position, and a drive unit which can be electrically excited by applying a voltage, having the following procedure: controlling and/or regulating the voltage for generating an effective voltage to transfer the piston from the start position to the end position, wherein the effective voltage reaches a first maximum (U1) in a start phase (t0-t1), and is lower than the first maximum in a subsequent intermediate phase (t1-t2). The effective voltage reaches a second maximum (U3) in an end phase (t2-t3) following the intermediate phase. A device is also provided having a dosing pump and a control/regulation unit. The control/regulation unit is suitable for controlling voltage applied to a drive unit of the dosing pump.

Abstract translation: 一种用于操作车辆加热器计量泵的方法，用于输送具有可在起始位置和结束位置之间来回移动的活塞的燃料，以及可以通过施加电压而被电激励的驱动单元，具有以下步骤： 控制和/或调节用于产生有效电压的电压以将活塞从起始位置传递到结束位置，其中有效电压在起始阶段（t0-t1）中达到第一最大值（U1），并且低于 在后续中间阶段（t1-t2）中的第一最大值。 有效电压在中间相之后的最后阶段（t2-t3）达到第二个最大值（U3）。 还提供了具有计量泵和控制/调节单元的装置。 控制/调节单元适用于控制施加到计量泵驱动单元的电压。