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US 8,938,956 B2Granted
Method of operating an energy recovery cylinder
AssigneeLiebherr-Hydraulikbagger GmbH
InventorsDirk Asam, Jochen Fehse
Life of this patent
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Abstract
The present invention relates to an implement, in particular an excavator or machine for material handling, with an element movable via at least one working drive, wherein at least one energy recovery cylinder is provided for energy recovery from the movement of the movable element, which includes a chamber filled with gas, wherein the actuation of the implement is effected in dependence on the directly or indirectly determined temperature of the gas in the chamber filled with gas.
Claims17
An implement, comprising:
- a movable element connected to a base structure;
- at least one working drive for moving the movable element, the working drive connected to the base structure and the movable element;
- at least one energy recovery cylinder for energy recovery from the movement of the movable element, the energy recovery cylinder including a piston and a chamber filled with gas, and connected to the base structure and the movable element;
- a temperature sensor arranged on the energy recovery cylinder for measuring the gas temperature in the energy recovery cylinder chamber and generating a temperature signal;
- and
- a controller programmed to adjust the actuation of the working drive based on the temperature signal received from the temperature sensor.
3 more elements
Dependencies are inferred from the claim text.