HYBRID ARCHITECTURE FOR INTELLIGENT POWER MANAGEMENT OF OFF-ROAD MACHINES

A hybrid power system for all-terrain machines manages energy distribution between hydraulic and terrain-engaging elements using a smaller ICE and battery-powered electric motor, addressing power challenges in extreme conditions and reducing costs and emissions.

DE102025147332A1Pending Publication Date: 2026-06-18DEERE & CO
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
DEERE & CO
Filing Date
2025-11-17
Publication Date
2026-06-18

AI Technical Summary

Technical Problem

Existing all-terrain machines face challenges in providing sufficient tractive effort and hydraulic power during extreme conditions without requiring an excessively large internal combustion engine, which leads to increased costs, space requirements, and emissions control issues.

Method used

A hybrid power generation system that combines an internal combustion engine with a battery-powered electric motor to manage energy distribution, using a first hydraulic pump driven by the engine and a second hydraulic pump driven by an electric motor, with a control system to adjust energy flow based on demand, ensuring the total energy remains below a threshold.

Benefits of technology

The system allows a smaller ICE to meet power demands in extreme conditions by efficiently distributing energy between hydraulic and terrain-engaging elements, avoiding the need for a larger engine, thus reducing costs and emissions while maintaining efficiency.

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Abstract

A system and a method control the energy required from an internal combustion engine (ICE) of an all-terrain machine with terrain engagement elements for moving the machine and hydraulic pumps for supplying hydraulic flow to a material handling attachment. The ICE drives the terrain engagement elements and a first hydraulic pump. The ICE drives a generator to provide electrical energy, which is stored in a battery. The stored electrical energy is selectively supplied to an electric motor, which drives a second hydraulic pump. If the total energy supplied by the ICE exceeds a predetermined level, the hydraulic flow supplied by the first hydraulic pump is reduced, and the hydraulic flow supplied by the second hydraulic pump is increased. The system and method allow a less powerful ICE to drive the machine.
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