Due to the kinematic limitation of slider-crank mechanisms used in traditional internal combustion engines, such devices driven by their piston motions have a difficulty to reach the better fuel efficiency. In order to make the fuel efficiency better, many engine mechanisms that can be tuned to obtain desired piston motions have been proposed. Since most of the proposed engine mechanisms have complex linkages and bulky size, they become impractical for real applications. The design of a conjugate cam engine mechanism containing a conjugate cam with a slider crank mechanism can be conveniently tuned to produce a desired piston motion in consideration of a limited space, weight, and the number of linkages.
The aim of this research is to set up a systematic design and analysis procedure for conjugate cam engine mechanisms. First of all, the kinematic analysis of conjugate cam engine mechanisms is performed based on the rigid body transformation method to determinate the conjugate cam profiles. Then, the geometric properties including the pressure angle and radius of curvature are investigated. Also, in order to characterize the rigid body dynamic behavior of the mechanism, the Newton¡¦s Law is used to derive equations of motion. Finally, it is conducted to design and analyze a real system, and observe the real condition from the experiment to prove the theory is correct.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0104112-200809 |
| Date | 04 January 2012 |
| Creators | Chung, Huai-Sheng |
| Contributors | Guan-Shyong Hwang, Jao-Hwa Kuang, Der-Min Tsay, Bor-Jeng Lin, Kuang-Yuh Huang |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0104112-200809 |
| Rights | user_define, Copyright information available at source archive |
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