Hydrostatic drive system for a vehicle
US6076350A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 23, 1998 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Sep 23, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/78
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydrostatic drive system is provided for a vehicle, in particular an industrial truck, with a hydrostatic traction drive system (16), a hydraulic work system (13) and a hydraulic steering system (9). The invention provides a drive system that is compact and exhibits improved operating behavior during the change from traction operation to coasting operation. To supply the traction drive system (16), the hydraulic work system (13) and the steering system (9), there is a hydraulic pump (1) with an adjustable delivery volume that works in the open circuit, which pump (1) discharges into a delivery line (5), in which there is a traction drive control valve (19) for the pressurization of the traction drive system, which is connected to an outlet line (22) leading to a reservoir, and which can be connected to delivery lines (20a, 20b) leading to the traction drive system (16), whereby in both the delivery line (5) and in the outlet line (22) there are respective flow regulators (23, 24), each of which can be pressurized by the pressure upstream of the choke point of the traction drive control valve (19) in the closing direction, and by the pressure downstream of a throttle point of the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.