열유체공학실험 RICEM 보고서

소개글

성균관대학교 열유체공학실험 RICEM 실험 보고서 입니다.

목차

1. Scavenging method of two-stroke cycle engine.
(1) What is Scavenging?
1) Cross flow scavenging
2) Loop scavenging
3) Uniform scavenging

2. What is the Free-piston
1) First generation free-piston engines
2) Modern applications
3) Free-piston features and potential advantages

3. Backfire in Hydrogen Engines

4. Theoretical amount of air for combustion 1kg hydrogen.

5. Reference

본문내용

A free-piston engine is a linear, `crankless` internal combustion engine, in which the piston motion is not controlled by a crankshaft but determined by the interaction of forces from the combustion chamber gases, a rebound device (e.g., a piston in a closed cylinder) and a load device (e.g. a gas compressor or a linear alternator).
The basic configuration of free-piston engines is commonly known as single piston, dual piston or opposed pistons, referring to the number of combustion cylinders. The free-piston engine is in practice restricted to the two-stroke operating principle, since a power stroke is required every fore-and-aft cycle.
1) First generation free-piston engines
The free-piston engine was first proposed by R.P. Pescara and the original application was a single piston air compressor. The engine concept was a topic of much interest in the period 1930-1960, and a number of commercially available units were developed. These first generation free-piston engines were without exception opposed piston engines, in which the two pistons were mechanically linked to ensure symmetric motion. The free-piston engines provided some advantages over conventional technology, including compactness and a vibration-free design.

참고 자료

http://en.wikipedia.org/wiki/Two-stroke_engine
http://www.brighthub.com/engineering/marine/articles/41089.aspx
http://en.wikipedia.org/wiki/Free-piston_engine
http://papers.sae.org/942035/
http://en.wikipedia.org/wiki/Back-fire