Tire Test Chamber Volume Control for Turbulence-Free Imaging

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional tire testing devices using vacuum pumps face issues such as air turbulence, poor image quality, longer test times, high noise levels, and high energy consumption due to the inability to precisely control vacuum profiles.

Innovation Solution

The tire testing device employs a pressure loading unit that changes the test chamber volume while excluding air from the environment, allowing for precise control of pressure changes and reducing air movement, noise, and energy consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stress or pressure

If a vacuum pump is used to generate negative pressure in the test chamber, then the pressure can be changed, but air turbulence occurs causing test object movement and poor image quality

Engineering Contradiction:

Improvepressure controlVSAvoidimage quality

Core Design Contradiction:

Stress or pressureVSMeasurement precision

Solution Approach 1:

The patent removes the vacuum pump from the system and replaces it with a movable wall element that changes chamber volume to control pressure. This extraction eliminates the source of air turbulence while maintaining pressure control capability through mechanical volume adjustment.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical vacuum pump system with a different mechanical approach using a movable wall element. This substitution changes the mechanism from active pumping to passive volume-based pressure control, eliminating turbulence-generating components.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Stress or pressure

If a vacuum pump is used to generate negative pressure, then pressure control is achieved, but settling time is required leading to longer test times

Engineering Contradiction:

Improvepressure controlVSAvoidtest time

Core Design Contradiction:

Stress or pressureVSLoss of time

Solution Approach 1:

The patent removes the vacuum pump and associated settling requirements by using a movable wall element that can directly establish the desired pressure state through volume adjustment, eliminating the time-consuming settling phase.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The movable wall element performs preliminary pressure establishment through controlled volume adjustment before measurement begins, eliminating the need for post-pumping settling time by proactively achieving the target pressure state.

Inventive Principle:

Principle #10Preliminary action

3Stress or pressure

If a vacuum pump is used to generate negative pressure, then pressure control is achieved, but precise control of the vacuum profile is not possible

Engineering Contradiction:

Improvepressure controlVSAvoidvacuum profile control precision

Core Design Contradiction:

Stress or pressureVSEase of operation

Solution Approach 1:

The patent implements a dynamically controllable movable wall element that can adjust chamber volume in real-time according to a programmed profile. This dynamic control enables precise vacuum profile management by directly correlating wall position with pressure state, allowing for accurate and flexible pressure control.

Inventive Principle:

Principle #15Dynamics

4Stress or pressure

If a vacuum pump is used to generate negative pressure, then pressure control is achieved, but noise level and energy consumption are high

Engineering Contradiction:

Improvepressure controlVSAvoidenergy consumption

Core Design Contradiction:

Stress or pressureVSUse of energy by moving object

Solution Approach 1:

The patent removes the energy-intensive vacuum pump from the system and replaces it with a mechanically efficient movable wall element that uses minimal energy for volume-based pressure control, dramatically reducing overall energy consumption.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The movable wall element utilizes the chamber's own volume as the pressure control mechanism, eliminating the need for external pumping energy. The system serves itself by using structural movement rather than active fluid removal to achieve pressure control.

Inventive Principle:

Principle #25Self-service

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach significantly reduces air turbulence, improves image quality, shortens test times, lowers noise emissions, and reduces energy consumption by up to 50% compared to conventional devices.

Implementation Method 1

the pressure loading unit changes the test chamber volume while excluding air from the environment in order to change the pressure in the test chamber

Methodology Applied

Scientific EffectVolume-pressure relationship: Boyle's Law

Data Source

PatentEP4249886B1Tyre test device

Publication Date: 2025.05.28 ITALMATIC SRL

Figure 1
Figure 2
Figure 3

AI summary

The present invention relates to a testing device, in particular a tire testing device, comprising a test chamber, a pressure loading unit for changing the pressure in the test chamber, and at least one measuring head for measuring a test object arranged in the test chamber at different pressure values generated by the pressure loading unit. It is provided that the pressure loading unit changes the test chamber volume while isolating it from the environment.