PIEZOELECTRIC ENERGY HARVESTING FROM TORSIONAL VIBRATION IN INTERNAL COMBUSTION ENGINES

• Published in: International journal of automotive technology pp. 645 - 651
• Main Author: 김기우
• Format: Journal Article
• Language: English
• Published: 한국자동차공학회 01.08.2015
• Subjects: 자동차공학
• ISSN: 1229-9138; 1976-3832
• DOI: 10.1007/s12239−015−0066−6

This paper presents a piezoelectric energy harvester (PEH), which harvests electric power energy from torsional vibration induced by internal combustion (IC) engines. The PEH can generate electric power for a wireless sensor node system by simply attaching a compact cantilever beam structure to the surface of the rotating shaft. A prototype PEH is manufactured by using a commercial piezoelectric wafer and mounted on a torque converter (i.e., engine output). The primary harvesting performance of the PEH prototype is experimentally validated through laboratory tests using a low-inertia dynamometer. The frequency response function of the PEH is investigated to evaluate its harvesting capability. Finally, its potential application to a wireless shaft torque transducer is discussed. KCI Citation Count: 15