Cooling System Optimization in an Air-Cooled CNG Engine Using 3-D CFD Technique TAFE Motors and Tractors Limited

Format:

Book

Conference/Event

Author/Creator:

Nain, Ajay, author.

Contributor:

Nene, Devendra

Unnithan, Sarat

Conference Name:

WCX SAE World Congress Experience (2022-04-05 : Detroit & Online, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2022

Summary:

AbstractAluminium alloy material cylinder head is a popular choice for any air-cooled internal combustion engine. But when it is exposed to higher temperature, it is vulnerable for its loss in strength. It becomes imperative to maintain cylinder head temperature well below acceptable temperature limit. Efficient cooling system play a vital role to achieve this objective. In the present work, an air-cooled diesel engine is converted into compressed natural gas (CNG) engine configuration for 25kVA genset configuration. A 1D gas-exchange model is created to generate the thermal boundary conditions required for Computational Fluid Dynamics (CFD) analysis. A steady-state 3D Conjugate Heat Transfer (CHT) model, that uses the predicted in-cylinder temperatures as a spatially varying boundary condition, is created to predict the convective heat transfer between engine fins and cooling air. A Blower Fan is modelled using the Moving Reference Frame (MRF) approach. Liner and Cylinder Head Fin temperature predicted using conjugate heat transfer method is validated for a baseline case with the experimental data. Base model HTCs and temperatures are considered limits for new CNG configurations and optimum cooling air flow rates are evaluated. This new cooling system is also experimentally verified for its effectiveness

Notes:

Vendor supplied data

Publisher Number:

2022-01-0206

Access Restriction:

Restricted for use by site license