RoaDyn® S220 2-Component Measuring Hub Meets Rolling Resistance Standards ISO 28580, SAE J1269 and ETRTO 117

Kistler has expanded its range of multicomponent measuring hubs for tire test stands. This complements the RoaDyn P5xy piezoelectric 5-component hubs with the RoaDyn S220 2-component design including strain gage force measuring technology. The S220 measuring hub Type 9289A103 measures changes in rolling resistance in the tangential direction Fx as close as possible to the tire footprint. The use of strain gage technology allows static measurement of the contact force Fz and control of the test stand.

The RoaDyn S220 measuring hub meets the requirements of the established rolling resistance standards ISO 28580, SAE J1269 and ETRTO 117 for passenger car tire load indices of up to 121. By contrast with the torque and power measurement methods also used for rolling resistance tests, the S220 relies on the force measurement method. By measuring very close to the tire footprint the force method increases accuracy by reducing parasitic losses. Subsequent data conversion optimizes measurement precision on rolling resistance test stands by eliminating the effect of crosstalk. Data output is analog in the case of the RoaDyn S220 measuring hub and digital with the RoaDyn System 2000.

RoaDyn S2xy measuring hubs support research and development aimed at minimizing the energy consumption and optimizing the running characteristics of tires. These activities are focused on the need to cut fuel consumption and CO2 emissions without compromising safety characteristics.

Kistler supplies different RoaDyn measuring hubs for different load ranges and applications encountered in tire R&D. Typical areas of application in addition to rolling resistant measurement include high speed uniformity (HSU) tests, noise vibration and harshness (NVH) studies, flat spot investigations, service life, non-uniformity detection and quality monitoring on production lines.

Kistler Group

Kistler’s core competence is the development, production and use of sensors for measuring pressure, force, torque and acceleration. Kistler’s know-how and electronic systems can be used to prepare measuring signals for use in analyzing physical processes, controlling and optimizing industrial processes, improving product quality in manufacturing and improving performance in sports and rehabilitation.

Kistler offers a comprehensive range of sensors and systems for engine development, automotive engineering, plastics and metal processing, installation technology and biomechanics.

A worldwide sales presence in the form of 25 group companies and 30 distributors ensures customer proximity, application support on an individual level and short lead times.

With a staff of about 1 000, the Kistler Group is one of the world’s leading providers of dynamic measuring instrumentation. The Kistler Group achieved turnover of 166 million Swiss Francs in the 2009 financial year.