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A variable fluid flow hydraulic pump

A fluid flow, hydraulic pump technology, applied in the direction of variable displacement pump components, components of pumping devices for elastic fluids, pumps, etc., can solve problems such as large expenses

Active Publication Date: 2015-11-04
DANFOSS POWER SOLUTIONS GMBH & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using such techniques in valve-controlled pumps requires substantial expenditure to switch valves quickly and in correct synchronization of shaft angle and valve actuation

Method used

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  • A variable fluid flow hydraulic pump
  • A variable fluid flow hydraulic pump
  • A variable fluid flow hydraulic pump

Examples

Experimental program
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Embodiment Construction

[0025] The present disclosure or specific embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. For consistency, the same elements are denoted by the same reference numerals in the various figures. Furthermore, in the following detailed description of the embodiments of the present disclosure, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one of ordinary skill in the art that the embodiments disclosed herein may be practiced without these specific details, and in other instances well-known features have not been described in detail in order to avoid unnecessarily confusing the described The description is complicated. In particular, these figures illustrate configurations showing a single displacement body with a fixed volume. However, it will be appreciated that in many configurations more than one displacement b...

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PUM

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Abstract

A variable fluid flow hydraulic pump including one or more displacement bodies 2 having a fixed volume chamber 3. Within this fixed volume chamber 3 a piston 4 cycles or reciprocates thus providing for the movement of fluid. Also present is a low pressure valve 9 connecting said displacement chamber with the low pressure side 5.Also present in embodiments of the present invention on the high pressure side 7 is a high pressure valve 6. The low pressure valve 9 is provided with adjustable means10 or Fcontrol providing an opening force thereon and further providing a closing force, which periodically increases during the pumping stroke and decreases during the suction stroke of said piston 4 reciprocating within the displacement body 3 and further comprises means to supply fluid from the low pressure side 5 to said fixed volume chamber 3 of the displacement body 3 while the pressure in the displacement chamber 3 is less than that of the low pressure side 5.

Description

technical field [0001] The disclosed embodiments of the present invention generally relate to a variable flow pump. More specifically, the disclosed embodiments of the present invention relate to a variable fluid flow hydraulic pump having a displacement body with a fixed volume chamber. Background technique [0002] There are a variety of work machines such as hydraulic excavators, wheel loaders, off-highway vehicles, mining machines, and other heavy construction vehicles or machines that are used to perform a variety of tasks. To accomplish this, work machines require a power source, such as a diesel engine, gasoline engine, natural gas engine, turbine engine, or any other type of power source that provides the required power. Such work machines also typically include various hydraulic power tools or hydraulic drive motors. [0003] Typically, work machines include a pump operably connected to a power source for generating a flow of pressurized hydraulic fluid to a power...

Claims

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Application Information

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IPC IPC(8): F04B9/04F04B49/22
CPCF04B49/22F04B1/0452F04B1/053F04B1/0531F04B1/06F04B13/00F04B19/22F04B49/03F04B49/06F04B53/1085F04B53/14F04B53/16F04B49/225F04B49/24F04B49/243
Inventor 汉斯·埃斯特斯
Owner DANFOSS POWER SOLUTIONS GMBH & CO