Method and arrangement for the deceleration of a hydrostatic transmission

US9976649B2 · kind B2 · utility

Assignee

• DANFOSS POWER SOLUTIONS GMBH & CO. OHG · DE

Inventors

• Reinhardt Thoms · Büdelsdorf, DE
• Martin Wuestefeld · Waldkirch, DE

Key dates

• Filing date: Jul 20, 2015
• Grant date: May 22, 2018
• Expiry date: Jul 25, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H61/475
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Method for deceleration of a hydrostatic transmission 3 driven by a drive motor 2 comprising a closed hydraulic fluid circuit, in which a hydraulic pump 4 coupled mechanically with the drive motor 2 and a hydraulic motor 5 are arranged. Two hydraulic lines 6, 7 connect the hydraulic pump 4 and the hydraulic motor 5 and constitute for the hydraulic motor 5 according to the drive direction of the hydrostatic transmission 3 a supply line 6 and a return line 7. In at least one of the two hydraulic lines 6, 7 a throttle valve 16 is arranged being adjustable in its throttle cross section which, if the corresponding hydraulic line 7 is a return line 7 for hydraulic fluid under high pressure towards the hydraulic pump 4 is being adaptable in its throttle cross section dynamically such that the adjustable hydraulic power in return line 7 downstream of throttle valve 16 at any time during a coasting mode corresponds to the maximum power being supportable at the drive motor 2 in consideration of the power consumption of auxiliary consumers 100 and power losses.