Task:
The development of a tribology test bench- also known as a vibration friction wear test bench- was a complex challenge. The test bench is designed to enable research into the wear conditions of piston ring and cylinder segments. For this purpose, demanding conditions must be simulated realistically and complex data acquisition must be made possible. This test bench must therefore realize a wide range of test conditions, including variable load and temperature ranges, different stroke lengths and frequencies as well as the precise dosing of media. In addition, precise measurement data acquisition and visualization is essential in order to obtain meaningful results.
Solution:
The tribology test bench meets these requirements thanks to its comprehensive design, which includes mechanical structure, measurement technology, control, visualization, sensor technology and a measurement data acquisition system. It can test piston ring segments (axial height 1 to 30 mm) and cylinder segments (length 50 to 200 mm). The test conditions include a load range from 0 to 4,000 N, a temperature range from room temperature to 400 °C and various stroke lengths and frequencies. The medium dosage is flexibly adjustable and there are options for temperature measurement at various points. The maximum runtime per measurement is 48 hours, with measurement data being recorded every 20 milliseconds. The software enables the definition of test parameters, termination criteria and the evaluation of the recorded data.
Cost efficiency:
The dynamic and precise recording of wear data by the tribology test bench provides high-quality research data that can be analyzed in detail. The ability to simulate a variety of test scenarios and adjust all relevant parameters enables detailed insights into the wear mechanisms of materials and the associated friction coefficient development. These findings can be used to optimize engine components, which in the long term leads to a reduction in downtimes as well as maintenance and operating costs (fuel consumption). The flexibility and adaptability of the test bench can therefore make a major contribution to increasing overall efficiency in engine testing and development.
