This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Effect of Forced Cool Down on Cold Start Test Repeatability
Technical Paper
2009-01-1976
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Increasing the number of cold-start engine cycles which could be run in any one day would greatly improve the productivity of an engine test facility. However with the introduction of forced cooling procedures there is the inherent risk that test-to-test repeatability will be affected. Therefore an investigation into the effects caused by forced cooling on fuel consumption and the temperature distribution through the engine and fluids is essential. Testing was completed on a 2.4 litre diesel engine running a cold NEDC. The test facility utilises a basic ventilation system, which draws in external ambient air, which is forced past the engine and then drawn out of the cell. This can be supplemented with the use of a spot cooling fan. The forced cool down resulted in a much quicker cool down which was further reduced with spot cooling, in the region of 25% reduction. The implementation of forced cooling was found to have a small but repeatable effect on the fuel consumption, around 1%, and the fluid temperature distribution through the engine. Using this data it is possible to increase the number of cold start tests performed per day from one to three.
Recommended Content
Citation
Lewis, A., Brace, C., and Cox, A., "The Effect of Forced Cool Down on Cold Start Test Repeatability," SAE Technical Paper 2009-01-1976, 2009, https://doi.org/10.4271/2009-01-1976.Also In
References
- A Systematic Analysis of CO2-Reduction be an Optimized Heat Supply during Vehicle Warm-up Kunze Klaas Wolff Stefan Lade Irina Tonhauser Johann SAE Paper 2006-01-1450
- Further Investigations on Time-Alignment Bannister CD Hawley JG Brace CJ Cox A SAE Paper 2004-01-1441
- Fuel Consumption Measurement - Techniques and Issues Brace CJ Hawley JG UnICEG winter 2006 meeting December 2005
- Determining the effect of lubricating oil properties on the diesel engine fuel economy Bannister CD Hawley JG Brace CJ Pegg I Dumenil JC A Brown ‘Internal Combustion Engines: Performance, fuel economy and Emissions’ 11 - 12 December 2007