Efficiency Improvements by Passive Control and Optimization of the Combustion Process and Engine Cooling


Disclaimer The contents of this report reflect the views of the authors, who have made an attempt to presented information herein carefully. This document is disseminated under the sponsorship of the Department of Transportation, University Transportation Centers Program, and California Department of Transportation in the interest of information exchange. The U.S. Government and California Department of Transportation assume no liability for the contents or use thereof. The contents do not necessarily reflect the official views or policies of the State of California or the Department of Transportation. This report does not constitute a standard, specification, or regulation. Abstract An innovative passive thermal management cooling system deploying expandable thin film assembly is proposed. The system is sensitive to small changes in temperature and adjusts through thermal expansion of a stagnant gas. The expansion of the stagnant gas accommodates a sufficient increase in flow dimensions to control the flow rate. The proposed system is ideal for passive control of density and air/fuel ratio of fresh charge of an internal combustion engine. Other applications include thermal heat management of high-intensity microchips and other electronic systems, and design of a variety of biosensors. A dual-layer thin film device has been designed that could prove effective as an alternative to carburetors. The device is capable to passively regulate the air/fuel ratio between 14.6 and 14.7 resulting in substantial reduction in pollutants emitted by internal combustion engines.

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@inproceedings{Chiu2011EfficiencyIB, title={Efficiency Improvements by Passive Control and Optimization of the Combustion Process and Engine Cooling}, author={F. C. Chiu and Jeremy Bonifacio and Sruthi Nadimpalli and Reza Toossi and Kambiz Vafai}, year={2011} }