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MEMS Rotary Engine Power System

A. Carlos Fernandez-Pello, Albert P. Pisano, Kelvin Fu, David C. Walther, Aaron Knobloch, Fabian Martinez, Matt Senesky, Conrad Stoldt, Roya Maboudian, Seth Sanders, Dorian Liepmann

Author information

A. Carlos Fernandez-Pello
Department of Mechanical Engineering, University of California, Berkeley
Albert P. Pisano
Department of Mechanical Engineering, University of California, Berkeley
Kelvin Fu
Department of Mechanical Engineering, University of California, Berkeley
David C. Walther
Department of Mechanical Engineering, University of California, Berkeley
Aaron Knobloch
Department of Mechanical Engineering, University of California, Berkeley
Fabian Martinez
Department of Mechanical Engineering, University of California, Berkeley
Matt Senesky
Department of Mechanical Engineering, University of California, Berkeley
Conrad Stoldt
University of Colorado, Boulder
Roya Maboudian
Department of Mechanical Engineering, University of California, Berkeley
Seth Sanders
Department of Mechanical Engineering, University of California, Berkeley
Dorian Liepmann
Department of Mechanical Engineering, University of California, Berkeley

Corresponding author

Keywords:MEMS Power Generation,Electroplating,Wankel Engine,Silicon Carbide,DRIE

JOURNALFREE ACCESS

2003 Volume 123Issue 9Pages 326-330

DOIhttps://doi.org/10.1541/ieejsmas.123.326

Details

Published: 2003Received: December 31, 2002Available on J-STAGE: December 01, 2003Accepted: -Advance online publication: -Revised: -

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Article overview

Abstract

This work presents a project overview and recent research results for the MEMS Rotary Engine Power System project at the Berkeley Sensor & Actuator Center of the University of California at Berkeley. The research motivation for the project is the high specific energy density of hydrocarbon fuels. When compared with the energy density of batteries, hydrocarbon fuels may have as much as 20x more energy. However, the technical challenge is the conversion of hydrocarbon fuel to electricity in an efficient and clean micro engine. A 12.9 mm diameter Wankel engine will be shown that has already generated 4 Watts of power at 9300rpm. In addition, the 1mm and 2.4 mm Wankel engines that BSAC is developing for power generation at the microscale will be discussed. The project goal is to develop electrical power output of 90milliwatts from the 2.4 mm engine. Prototype engine components have already been fabricated and these will be described. The integrated generator design concept utilizes a nickel-iron alloy electroplated in the engine rotor poles, so that the engine rotor also serves as the generator rotor.

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