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hydrostatic piston machine

A technology of hydrostatic force and piston machine, applied to components of pumping devices for elastic fluids, liquid displacement machines, liquid fuel engines, etc., to achieve the effect of increasing the possibility of change

Active Publication Date: 2020-08-11
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of such a piston machine is that only the (outer) part of the pistons can be activated and deactivated, while the other (inner) part of the pistons remains active all the time

Method used

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Examples

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Embodiment Construction

[0041] figure 1 A cylinder 1 is shown with a piston 2 guided therein, on which a rolling body 4 is mounted. This arrangement is provided multiple times and here is evenly distributed over the circumference of the rotor (not shown) of the first embodiment of the radial piston machine according to the invention. The piston 2 is supported via corresponding rolling bodies 4 on a stroke curve 6 arranged on the outer circumference of the radial piston machine, wherein a plurality of cams 8 are evenly distributed on this stroke curve 6 .

[0042] A first embodiment of the radial piston machine according to the invention is used as a pump. The pump has a working connection 10 which conducts a low-pressure input side and a further working connection 12 which conducts a high-pressure output side. The radial piston pump is connected in a closed circuit to a hydrostatic motor 14 . Since the delivery volume of the first embodiment of the radial piston pump according to the invention can...

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Abstract

A hydrostatic piston machine is known which has a plurality of multistage pistons which are guided in correspondingly associated cylinders. Each multistage piston has a first partial piston and at least one further partial piston which is relatively movable relative to the first partial piston on the periphery. Each cylinder has a first working chamber and at least one further working chamber separated therefrom by a multistage piston. Each partial piston delimits an associated working chamber with its working surface. The first working chamber can be connected or disconnected via one or two first switching valves, and each further working chamber can be connected or disconnected via one or two further switching valves. As a result, each partial piston of the multistage piston can be activated and deactivated independently of the other partial pistons.

Description

technical field [0001] The invention relates to a hydrostatic displacement-adjustable piston machine according to the preamble of patent claim 1 . Background technique [0002] In order to adjust the displacement of a hydrostatic axial piston machine while the rotational speed remains the same, it is known to adjust the swivel angle of the swash plate or cylindrical cylinder steplessly and thus change the coupling thereto during operation. Or the stroke of the piston guided therein. As a result, the displacement is adjusted proportional to the rotational speed. [0003] Furthermore, piston machines are known from the prior art, for which partial quantities of cylinders can be completely deactivated. This is done, for example, by valves assigned to the cylinders. Via said valve, the cylinder to be deactivated is not alternately connected to the high-pressure side and the low-pressure side of the machine, but is always connected to one of the two sides, in most cases the lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B53/14F04B53/16
CPCF04B1/124F04B1/143F04B49/18F04B1/0408F04B3/00F04B49/16
Inventor G.亨德里克斯
Owner ROBERT BOSCH GMBH