능동형 열관리 시스템 적용을 통한 가솔린 자동변속기 차량의 연비 개선
- 발행기관 아주대학교
- 지도교수 박진일 교수님
- 발행년도 2013
- 학위수여년월 2013. 2
- 학위명 석사
- 학과 및 전공 일반대학원 기계공학과
- 실제URI http://www.dcollection.net/handler/ajou/000000014191
- 본문언어 한국어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
VTMS(Vehicle Thermal Management System, 차량 통합 열관리)는 능동제어가 가능한 냉각 시스템을 사용하여 내연기관에서의 열손실을 줄이는 시스템이다. VTMS 제어를 하기 위하여 일부 능동적으로 제어 할 수 없는 기계식의 냉각 부품을 전자식의 냉각 부품으로 변경할 필요가 있다. 능동적 제어를 위하여 변경하여야 하는 냉각 부품으로는 전자식 써모스탯, 전자식 워터 펌프, 전자식 냉각 팬, AAF 등의 항목이 있으며, 이 중 AAF는 차량의 전면의 형상을 변경하여 차량의 공기 역학적 손실을 감소시키는 장치이다. 그러나 AAF를 닫을 경우 라디에이터에 급 되는 공기의 흐름을 막기 때문에 냉각 효과를 감소시킬 수 있다. 이러한 이유로, 냉각 부품을 제어하는 VTMS 알고리즘에는 AAF 제어 알고리즘을 포함하고 있어야 한다. 본 연구에서는 AAF, 전자식 물 펌프, 전자식 써모스탯 등의 VTMS를 구성하는 부품들이 설치된 테스트 차량을 사용하여 냉각수, 엔진오일, 변속기 오일의 온도와 제어 요소별 시뮬레이션 모델링을 수행하여 VTMS 차량의 온도변화를 예측하고 각 요소별 연비 영향도를 예측할 수 있는 시뮬레이션을 구축하였다. 또한 이러한 과정을 통하여 전자식 시스템의 연비향상 효과를 확인하였다.
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목 차
그림 차례
표 차례
줄 임 말
기호 설명
제 1 장 서론 ················································································ 1
1.1 연구 배경 및 목적································································· 1
1.2 VTMS 하드웨어 구성 ························································ 2
1.3 냉각계 구성 단품 시험 및 데이터 베이스 구축 ·············· 3
1.3.1 ATF warmer 단품 실험 ·················································· 3
1.3.2 ATF warmer 실험 방법 및 결과 ··································· 5
1.3.3 라디에이터 실차 실험 ····················································· 7
1.3.4 라디에이터 실험 방법 및 결과 ······································ 8
1.3.5 기계식 워터 펌프 ···························································· 11
1.3.6 기계식 워터 펌프 실험 방법 및 결과 ························ 12
1.3.7 전동식 워터 펌프 실험 ·················································· 18
1.3.8 전동식 워터 펌프 실험 방법 및 결과 ························ 18
1.3.9 냉각계 영향인자 및 주요 변수 도출 ·························· 19
제 2 장 VTMS 시뮬레이션 모델링 ······································· 21
2.1 냉각수 온도 ······································································· 21
2.2 변속기 오일 온도 ······························································ 24
2.3 엔진 오일 온도 ·································································· 27
2.4 온도예측 통합 모델링 ······················································ 30
제 3 장 차량 통합 모델링 구축 ············································· 32
3.1 차량 통합 모델링 ····························································· 32
제 4 장 시뮬레이션 결과 및 분석 ········································ 33
4.1 FTP-75 주행모드 평가 ··················································· 33
4.2 차량 통합 시뮬레이션 구축 ··········································· 35
4.3 기계식 대비 전자식 VTMS 시스템의 연비 영향 비교 · 36
제 5 장 결론 ············································································ 38
제 6 장 참고 문헌 ··································································· 39
ABSTRACT ············································································· 40
