메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색
질문

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색
질문

초록· 키워드

오류제보하기
Diesel engines are excellent at thermal efficiency and less amount of CO₂ emission than gasoline engines. However, PM and NOx from exhaust gas is the biggest problem of diesel engines. SCR system is known as the best method to reduce NOx. SCR system is classified into three types, NSR, NH₃-SCR and HC-SCR. Urea-SCR, the most stable among three types, is usually used since NSR and NH₃-SCR have the problem of poisoning by sulfur and the difficulty in treating dangerous gas. However, NH₃ slipped by over-injecting urea as a reductant will become a serious problem since slipped NH₃ is the second pollutant. This work considers optimizing the amount of urea injection to minimize the second pollutant. This work on urea system to reduce NOx also analyzes factors influenced on reducing NOx and conducts the chemical and or mechanical inquiry about the fundamental operating principle and the reduction method of Urea-SCR system in the experiment. The control system of urea injection is also designed available in an actual diesel vehicle on chassis dynamometer. From the pre-mechanism, the duration of injection is given by the amount of NOx at the maximum torque point(1500 rpm) and ND-13 mode similar to actual driving pattern.
This work confirms the installation of SCR system may not affect engine performance since engine power, torque and sfc change within only 5%, even if the SCR system is applied or not. This work presents the fundamental data to coincide with EURO Ⅳ and Ⅴ enforced from 2008 with SCR system.

목차

Abstract
1. 서론
2. 실험장치 및 실험방법
3. 결과 및 고찰
4. 결론
References

참고문헌 (0)

참고문헌 신청

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!

이 논문의 저자 정보

이 논문과 함께 이용한 논문

최근 본 자료

전체보기

댓글(0)

0

UCI(KEPA) : I410-ECN-0101-2009-556-017555606