Hydrostatic power unit

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9664168
SERIAL NO

14451747

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A hydrostatic power unit (2) comprises a variable displacement machine with a continuously variable displacement volume and is operated as a pump and motor and is in a drive connection with an internal combustion engine (3). When operated as a pump, the power unit sucks hydraulic fluid out of a tank (9) and delivers into a delivery side (P), and, when operated as a motor, functions as a hydraulic starter to start the internal combustion engine (3). When operated as a motor, the power unit is supplied with hydraulic fluid from a hydraulic accumulator (30). The displacement volume of the power unit (2) is set by a displacement volume control device (60) actuated by a positioning piston device (61) supplied with hydraulic fluid from a charging pressure circuit (23). The power unit (2) includes a supplemental positioning piston device (80) in an operative connection with the displacement volume control device (60) and which is actuated directly by the pressure present in the hydraulic accumulator (30). By means of a connection of the supplemental positioning piston device (80) with the hydraulic accumulator, the power unit (2) can be adjusted to increase the displacement volume to start the internal combustion engine (3).

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First Claim

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Patent Owner(s)

  • LINDE HYDRAULICS GMBH & CO. KG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Krittian, Lukas Aschaffenburg, DE 16 65
Langen, Alfred Aschaffenburg, DE 16 81
Lasaar, Rolf Grossostheim, DE 2 1
Loeffler, Thomas Waldaschaff, DE 7 18

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