Track-type construction machine

A hybrid drive system with an electric machine operating as both motor and generator addresses the inefficiencies of existing railway construction machines, offering a compact and efficient power supply that combines fuel-electric and overhead line operation, enhancing performance on steep gradients.

EP4578758A1Active Publication Date: 2025-07-02HP3 REAL GMBH
3 Cites 0 Cited by

Patent Information

Application Number
EP2024219340
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-12-29
Filing Date
2024-12-12
Publication Date
2025-07-02
Estimated Expiration
2044-12-12

AI Technical Summary

Technical Problem

Existing railway construction machines face challenges in achieving a compact and efficient power supply system that can operate both as a fuel-electric drive and an overhead line-supported drive, particularly when electrified lines are not available, with existing solutions being bulky, heavy, and inefficient.

Method used

A hybrid drive system utilizing an electric machine that can operate as both an electric motor and a generator, connected via clutches to an internal combustion engine and hydraulic pumps, allowing for various operating modes including overhead line and diesel-electric combinations.

Benefits of technology

The system provides a compact, efficient, and versatile power supply that reduces power losses and weight, enabling continuous operation with reduced emissions and enhanced performance on steep gradients.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

A track-mounted railway construction machine (1, 40) is described, comprising a machine frame (23) movable on rail bogies (8) with electric travel drives (27), a current collector system (38, 37, 42, 36, 35) for collecting power from an overhead line network (39), and optionally a direct current intermediate circuit (48). In order to create advantageous design and operating conditions, it is proposed that an electric machine (30) be provided which can be operated both as an electric motor and as an electric generator, which on the one hand is drive-connected to an internal combustion engine (10) via a first clutch (K1) and on the other hand is drive-connected to at least one hydraulic pump (20) for operating hydraulically driven work units (2, 4, 41) via a second clutch (K2).
Need to check novelty before this filing date? Find Prior Art