Theoretical Analysis of Internal Combustion Engine Miscellaneous Heat Losses Engine Group, Navistar, Incorporated

Format:

Conference/Event

Author/Creator:

Xin, Qianfan (Harry), author.

Conference Name:

SAE 2009 Commercial Vehicle Engineering Congress & Exhibition (2009-10-06 : Rosemont, Illinois, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2009

Summary:

With more stringent emissions regulations (e.g., US EPA 2010), heat rejection control in cooling system design becomes increasingly important and a necessary part of the emissions control recipe in modern diesel engine design. Energy balance of the gas-side performance data (flow rate and temperature) with thermodynamic first law is an effective approach to analyze coolant heat rejection. In order to determine a critical engine design characteristic, base engine heat rejection percentage, an accurate assessment on various miscellaneous heat losses is required. Once the miscellaneous heat losses are known, it is convenient to use the gas-side energy balance to compute base engine coolant heat rejection. In this paper, a theoretical analysis was conducted to derive the parametric dependency of the miscellaneous losses to the ambient through the surfaces of exhaust manifold, turbocharger and engine block via convection and radiation heat transfer. Two energy balance analysis methods with different boundaries are presented to support the analysis of miscellaneous heat losses. The results were validated by coolant heat rejection experimental data. GT-POWER simulation results are also included

Notes:

Vendor supplied data

Publisher Number:

2009-01-2881

Access Restriction:

Restricted for use by site license