October 2019

HOW MONITORING OF THE TIRE TEMPERATURE WITH NON-CONTACT IRT/C SENSORS HELP AUTOMOTIVE INDUSTRY?

Tire temperature is of critical concern in automotive racing for two reasons:

1) Tire temperature directly affects the tire’s adhesion and wear characteristics. For example, as it takes lap after lap around an oval track, a race car’s tires will begin to build up excessive heat in those areas that grip the curves.  Temperature readings can help drivers and pit crews know when tires have begun to wear excessively or unevenly, and signal the proper time to bring the car in for a pit stop.  By measuring the tire temperature, pit crews can save drivers precious time, ensuring they change the tires at the right moment, not too early, not too late.

2) Tire temperature patterns provide valuable information regarding the set-up and performance of the automobile’s suspension. For example, out-of-tune suspension will place excessive loading on a tire and cause that tire to become considerably warmer than the others. The rubber in the areas with excessive load will wear much more quickly than other parts of the tire and will begin to lose their grip.  When this occurs, the four tires could wear out differently, requiring the racer to make more frequent pit stops and lose precious time.…

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APPLICATION NOTE: AMATEUR NASCAR RACE TEAM DRIVES WINNING RESULTS WITH EXERGEN THERMAL SENSORS

Chapmanville, West Virginia resident Lee Rayburn and his teammates have been involved in amateur stock car racing for more than two decades, at first competing in the US Legend Cars races. Two years ago, the team, known as Sniper Motorsport, shifted gears and moved to larger NASCAR Limited Late Model Stock Cars. Rayburn, a civil engineer, knew that some racers used data acquisition systems to improve their results, and wanted to design a solution that would allow him to acquire the tire temperature data needed to optimize camber and improve corner speeds. He and his teammates had no experience with the systems, and given the competitive nature of car racing, others weren’t likely to share their knowledge, so Rayburn set out to learn more on his own.

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RELEVANT TECH NOTE #51: ASPHALT TEMPERATURE MONITORING

Asphalt properties are particularly sensitive to temperature, and it is important that the asphalt is applied at the correct temperature in order to perform to its specifications. Accordingly, temperature monitoring is a common requirement, but the thermocouples normally used have severe breakage problems due to the harsh abrasiveness of the material, and must constantly be replaced at high cost and interruption of production.

The IRt/c solves this problem directly, since the temperature is monitored without contact. The normal thermocouple controller can be used – simply calibrate offset if necessary. The IRt/c.3x and .5 models are recommended for their built-in air purge, which will keep the lens clean by preventing vapors from condensing on the lens. The IRt/c.3x can be mounted in the chute to view the asphalt through a small hole, while the IRt/c.5 can be mounted some distance away due to its narrow 5:1 field of view.

Read the full Tech Note here