Abstract
Reliable and accurate measurement of piston-assembly friction is urgently required in the field of internal combustion engines. With few modifications to the engine, an improved wireless instantaneous indicated mean effective pressure (IMEP) technique for measuring piston-assembly friction under fired conditions is first presented in this paper. The piston-assembly friction is obtained indirectly by measuring the cylinder pressure, the connecting rod force, the crank position and the engine speed under various conditions. A measurement system, mainly including a wireless rechargeable telemetry module, a data acquisition system and three typical sensors, is modified for an online test. After the in-situ measurement and the simulations, it is found that the simulation results generally coincide with the measured data. Though the current measurement technique still suffers from challenges in signal synchronization, noise control and system reliability, it can be applied for the direct performance evaluation of piston assembly in the future.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
