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Proceedings Paper

Study on measurement technology of microengines
Author(s): Lei Guan; Jia-dao Wang; Da-rong Chen
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Paper Abstract

This paper describes the recent progresses of the measurement technology on micro thermal engines with displacement less than 1 cc. An integrative platform characterizing micro engines in terms of their torque, speed, power, temperature field and other properties has been developed and versatile tasks can be accomplishd with satisfactory precision. Applying a DC motor as dynamometers, the power of micro engines can be tested. The temperature field of cylinder wall is measured in this test platform using the IR thermography techniques. Transitional data produced by an incremental coder are captured as function of time by a fast reacting computer and software system. With frequency analysis and digital filter, the dynamic information of micro engines is calculated. Experiments demonstrate that both the temperature and thermal efficiency of micro engines are low as the result of small size. The torque of micro engines changes slightly with the speed at normal operation scope. The transient speed can be used to calculate the gas pressure inside the cylinder and other parameters. Experimental study testified these non-contact methods.

Paper Details

Date Published: 2 September 2003
PDF: 6 pages
Proc. SPIE 5253, Fifth International Symposium on Instrumentation and Control Technology, (2 September 2003); doi: 10.1117/12.521688
Show Author Affiliations
Lei Guan, Tsinghua Univ. (China)
Jia-dao Wang, Tsinghua Univ. (China)
Da-rong Chen, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 5253:
Fifth International Symposium on Instrumentation and Control Technology
Guangjun Zhang; Huijie Zhao; Zhongyu Wang, Editor(s)

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