A method of calibrating a hydraulic system which generates hydraulic fluid flow to a tiltrotator for controlling the movement thereof

The hydraulic system is calibrated by adjusting control parameters to determine and adjust flow rate and pressure limits, addressing the uncertainty in retrofitting tiltrotators, ensuring accurate movement control.

EP4749032A1Pending Publication Date: 2026-05-27ENGCON AB
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
ENGCON AB
Filing Date
2024-11-20
Publication Date
2026-05-27

AI Technical Summary

Technical Problem

The retrofitting of tiltrotators on construction machinery results in uncertain performance characteristics of hydraulic components, leading to poor accuracy and precision in controlling the movement of the tiltrotator due to the additional demand on hydraulic pumps and valves, which are typically uncalibrated.

Method used

A method of calibrating a hydraulic system by providing control parameters to interconnected subsystems to determine and adjust the flow rate and pressure limits, allowing precise control of hydraulic fluid flow to the tiltrotator, even when components are uncalibrated.

Benefits of technology

Enables precise control of hydraulic fluid flow to the tiltrotator, ensuring accurate movement by calibrating the hydraulic system based on predetermined capacities and real-time feedback, improving the calibration process.

✦ Generated by Eureka AI based on patent content.

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Abstract

There is provided a method of calibrating a hydraulic system (100) which generates hydraulic fluid flow to a tiltrotator (300) for controlling the movement thereof, wherein the hydraulic system (100) comprises a first subsystem (110) and a second subsystem (120) hydraulically interconnected with the first subsystem (110). The method comprises providing a first control parameter (α1) to the first subsystem (110) so as to enable the second subsystem (120) to increase at least one of a flow rate and a pressure of an outgoing hydraulic fluid (130) up to, and limited by, a first secondary predetermined capacity of the second subsystem (120). The method further comprises providing a second control parameter (β1) to the second subsystem (120) to control the second subsystem (120) to increase the at least one of a flow rate and a pressure of the outgoing hydraulic fluid (130). The method further comprises detecting that the second subsystem (120) reaches the first secondary predetermined capacity and measuring, when the first secondary predetermined capacity is reached, a first secondary peak level of the second control parameter (β1). The method further comprises calibrating the second subsystem (120) using the first secondary peak level.
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