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휴대용 파워팩을 위한 소형 세라믹 리니어엔진 설계 및 동적 특성에 관한 연구
김남열(Nam Yuer Kim),김강출(Gang Chul Kim),하병길,임옥택(Ock Taeck Lim) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
Current rechargeable battery cannot provide high energy density and the operational durations required. But linear engine/generators provide high energy density for portable power applications because fuel is more high density. In this paper, we suggest that basic design of powerpack using linear engine for assisting power output. Efficiency is relatively high because linear engine don't have crank mechanism compared with rotary engine. We made prototype engine and had experiments to know moving characteristic about the Linear Engine. It was possible to operate velocity at 50 ㎐ at the firing and pressure in cylinder was 16bar.
김남열(Nam Yuer Kim),표영덕(Young Dug Pyo),조종표(Chong Pyo Cho),임옥택(Ock Taeck Lim),김강출(Gang Chul Kim) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
Recently, in the field of electric vehicles, various modes have already been produced by vehicles industries and they will spread more and more as the regular vehicles of the environment conscious people in the future. However, They demand lots of electrical power and long operation, but current rechargeable battery cannot provide the operational durations required. Also short lifetimes of batteries impose a fundamental limitation. Due to these reasons, small linear engine and linear generator are designed with Hybrid electric vehicles in this paper. A linear generator may be coupled directly to the piston for a conversion of mechanical energy into electrical energy. Such design has many advantages such as mechanical simplicity and low friction and it can make possible a small engine having high efficiency. In other words, linear engines give power output more efficiently compared to conventional reciprocating piston engine, because it doesn't have a crank mechanism, hence there is less mechanical loss. To increase the efficiency and endurance, we made a piston and cylinder sleeve by ceramic materials.
세라믹 리니어엔진을 이용한 소형 전기자동차용 온보드 제너레이터 개발
김남열(Nam Yuer Kim),표영덕(Young Dug Pyo),임옥택(Ock Taeck Lim),김강출(Gang Chul Kim) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
In the realm of small electric vehicles (neighborhood electric vehicles or personal electric vehicles such as electric wheelchairs, electric scooters etc.), there's a power struggle brewing. They demand lots of electrical power and long operation, but current rechargeable battery cannot provide the operational durations required. Also short lifetimes of batteries impose a fundamental limitation. Due to these reasons, a small linear reciprocating engine and linear electric generator are designed in this paper. If an engine is used solely to produce electrical power, it is not necessary to convert the reciprocating linear motion of the piston to rotary motion by crank. Instead, a linear electrical generator may be coupled directly to the piston for a conversion of mechanical energy into electrical energy. Such a design has many advantages such as mechanical simplicity and low friction and it can make possible a small engine having high efficiency. In other words, linear engines give power output more efficiently compared to conventional reciprocating piston engine, because it doesn't have a crank mechanism, hence there is less mechanical loss. In this study, we developed a small sized linear engine for the electrical power generation. To increase the efficiency and endurance, we made a piston and cylinder sleeve by ceramic materials.
소형 세라믹 리니어엔진을 이용한 RE-EV용 파워팩의 설계에 관한 연구
임옥택(Ock Taeck Lim),김남열(Nam Yuer Kim),김강출(Gang Chul Kim),김진복(Jin Bok Kim) 한국자동차공학회 2010 한국자동차공학회 지부 학술대회 논문집 Vol.2010 No.12
A current rechargeable battery for EV cannot provide high energy density and the operational durations required. In this study, we develope a linear engine and generator for portable power pack for RE-EV. To increase the efficiency and endurance, we made a piston and cylinder sleeve by ceramic materials. Efficiency is relatively high because linear engine don’t have crank mechanism compared with rotary engine. We made prototype engine and had experiments to know moving characteristic about the Linear Engine. It was possible to operate velocity at 50 ㎐ at the firing and pressure in cylinder was 16bar.