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- Title
Analysis of engine temperature and energy flow in diesel engine using engine thermal management.
- Authors
Jung, Daebong; Yong, Jinwoo; Choi, Hoimyung; Song, Hanho; Min, Kyoungdoug
- Abstract
Recently, precise analysis of energy flow in engines has become necessary to improve fuel economy. An integrated engine thermal management model, which is introduced in this paper, is suitable for that process. The model consists of six sub-models for thermal mass, coolant, lubricant, heat transfer, friction, and exhaust. The sub-models are coupled to each other and they exchange heat and signals. Combustion energy flow analysis and temperature estimation of the engine components and working fluids were simulated under various conditions. Simulation results were compared with experimental data and they showed good agreement. Then, a variable-speed water pump (VSWP) to control coolant flow was applied in place of a conventional water pump. Engine warm-up time decreased with proper coolant flow control, and fuel economy could be improved by 2.5%.
- Subjects
AUTOMOBILE engines; WATER pumps; FLUID mechanics; HEAT transfer; MECHANICS (Physics)
- Publication
Journal of Mechanical Science & Technology, 2013, Vol 27, Issue 2, p583
- ISSN
1738-494X
- Publication type
Article
- DOI
10.1007/s12206-012-1235-4