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Design considerations, modeling, and...

Aichlmayr, Hans Thomas.

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Design considerations, modeling, and analysis of micro-homogeneous charge compression ignition combustion free-piston engines.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Design considerations, modeling, and analysis of micro-homogeneous charge compression ignition combustion free-piston engines./
作者:	Aichlmayr, Hans Thomas.
面頁冊數:	225 p.
附註:	Source: Dissertation Abstracts International, Volume: 63-11, Section: B, page: 5468.
Contained By:	Dissertation Abstracts International63-11B.
標題:	Engineering, Mechanical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3072646
ISBN:	0493924809

Design considerations, modeling, and analysis of micro-homogeneous charge compression ignition combustion free-piston engines.
Aichlmayr, Hans Thomas.

Design considerations, modeling, and analysis of micro-homogeneous charge compression ignition combustion free-piston engines. - 225 p.

Source: Dissertation Abstracts International, Volume: 63-11, Section: B, page: 5468.

Thesis (Ph.D.)--University of Minnesota, 2002.

This thesis is a feasibility study of micro- and meso-homogeneous charge compression ignition (HCCI) free-piston engines. Although numerous fundamental issues arise in micro-engine design, HCCI combustion in small scales is the focus of this work. To this end, single-shot experiments and numerical modeling are employed to characterize micro-HCCI combustion. Experimental studies with n-heptane reveal that HCCI combustion in small scales is feasible and that a wide range of fuel-air equivalence ratios (0.2--2.9) may be used. The HCCI numerical models employ detailed homogeneous gas-phase chemical kinetics and they approximate the combustion chamber with fixed- and variable-volume batch reactors. The fixed-volume reactor model is primarily used to characterize potential fuels and the variable-volume reactor models are used to capture gas compression and expansion processes. The variable-volume reactor models consider two types of piston motion: slider-crank and free-piston. The slider-crank model is used to explore fundamental aspects of HCCI combustion and to obtain potential operating maps for miniature two-stroke HCCI engines. The free-piston model couples the piston motion to gas-phase thermodynamics and chemical kinetics. The free-piston model approximates the single-shot process; excellent correspondence between model predictions and experimental data is found. Parametric studies conducted with the free-piston model are employed to: (1) Gain physical insight into the single-shot process, (2) Investigate micro-HCCI free-piston engine design considerations, and (3) Explore kinetic constraints for HCCI engine operation. Non-dimensional parameters are identified and subsequently used to explore free-piston engine design and kinetic operating limits. Additionally, existing small engines and fundamental aspects of free-piston engine operation and design are presented. The existing body of HCCI literature is also thoroughly reviewed.

ISBN: 0493924809Subjects--Topical Terms:

783786
Engineering, Mechanical.

Design considerations, modeling, and analysis of micro-homogeneous charge compression ignition combustion free-piston engines.
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