- 본론
2004년 토요타에서 발표한 하이브리드 자동차 ‘프리우스’
1. 하이브리드 자동차(HybridElectric Vehicle, HEV)는..
하이브리드 자동차라는 개념은 20세기 초에 처음 등장했다. 당시는 내연기관 차량 개발의 초기단계였으므로 엔진 기술이 부족해서 고출력 엔진의 제조에 애를 먹고 있었다. 이 때,
1.Introduction
A fuel cell is a device that converts the chemical energy of a fuel (hydrogen, natural gas, methanol, gasoline, etc.) and an oxidant (air or oxygen) into electricity. A fuel cell operates like a battery. However, a fuel cell does not require recharging, it produces electricity and heat as long as fuel and an oxidizer are supplied.
Fuel cell construction generally consists
Hybrid
The hybrid car has two power sources – an engine and a secondary cell. These sources work respectively or simultaneously according to the driving condition to increase efficiency. Hybrid cars run on battery power at low speeds and switch to traditional internal-combustion at higher speeds. Since the capability of a secondary battery is not enough to replace the existing engine, it
vehicles from 2005. Especially, a traditional push strategy(producer-based method) was switched to a pull strategy(customer-based mothod) in the SCM part.
2. Trying to upgrade the quality through 6-sigma methodology
The 6-sigma movements started in earnest on November 1999. Hyundai Motor have trained 3500 experts of black belt and green belt, and attained several its goals;3800 projects, cost
Ⅰ. 서 론
지금 세계는 원유 1 배럴당 170$를 웃도는 고유가 행진이 지속되고 있어, 우리의 경제에 큰 시름을 안겨주고 있습니다. 20세기를 지탱하게 해준 화석연료의 고갈과 지구온난화 등의 환경문제가 일으킬 재앙을 고려할 때, 수소에너지체제가 해결책의 하나로 거론되고 있습니다. 수소의 장점은