Piston Data Telemetry in Internal Combustion Engines

K. M. Ebrahimi^1, , A. Lewalski¹, A. Pezouvanis¹ and B. Mason¹

¹School of Engineering, University of Bradford, UK

Cite this paper:
K. M. Ebrahimi, A. Lewalski, A. Pezouvanis and B. Mason. Piston Data Telemetry in Internal Combustion Engines. American Journal of Sensor Technology. 2014; 2(1):7-12. doi: 10.12691/ajst-2-1-2

Abstract

Measuring piston crown temperature and pressure during engine development cycle is paramount. This paper presents a new development in short distance telemetry system which includes an on board power generation device. A mechatronic data acquisition system is developed whereby signal conditioning is performed by a module inside the piston and the signal passed to a Bluetooth transmitter module for wireless telemetry to a Bluetooth receiver located in very close proximity, connected to an external host PC. The Data Acquisition Bluetooth module integrates a microcontroller that reads the conditioned sensor signal and performs any other required functionality. The microcontroller firmware includes a server that collates the data and transmits them via Bluetooth to the host PC to display via a client interface. An independent power supply consisting of a rotor incorporating NdFeB magnets and a wire wound stator. As the crankshaft rotates the rotor induces an AC voltage into the stator. A rectifying circuit converts the AC voltage into a regulated DC output voltage that drives the signal conditioning and embedded Bluetooth circuits.

Keywords:
short distance telemetry Bluetooth piston temperature

This work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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