This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Spotting the Difference - Measuring Worthwhile Lubricant Related CO 2 Benefits
Technical Paper
2016-01-0890
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Measuring lubricant related fuel economy of internal combustion [IC] engines presents technical challenges, due to the relatively small differences attributable to lubricants. As engine technology progresses, large benefits become harder to find; so the importance of precise measurement increases. Responding to the challenge of meeting CO2 targets, many successful IC engine technologies have been deployed; these include downsizing/rightsizing[1], mechanical efficiency improvements, advanced charging and combustion systems, thermal management, sophisticated electronic control and calibration. These technologies have been deployed against a back-drop of increasingly stringent emission requirements. Increasing attention is focused on technologies which offer smaller but important contributions. The search for smaller improvements combined with growing engine and vehicle technology complexity increases the challenge of producing high quality data.
The aim of this paper is a practical engineering overview of the measurement of engine fuel economy using engine drive cycles.
As a global lubricant company, Castrol’s engine experience and customer base is broad, covering the whole spectrum from small handheld power tools to large truck and marine engines. Described here are aspects of our experience in testing passenger car engines, with a focus on detecting the impact of lubricant formulation on fuel economy. A facility delivering critical precise measurements is described, along with the equipment and methodology developed over many years by the engineers who use it.
Further, stop:start is investigated, an aspect of “micro-hybrid” technology.
Using simulation software, the vehicle load demand was varied to demonstrate the effect of typical vehicle parameters on lubricant differentiation.
Recommended Content
Authors
Topic
Citation
Butcher, R., "Spotting the Difference - Measuring Worthwhile Lubricant Related CO2 Benefits," SAE Technical Paper 2016-01-0890, 2016, https://doi.org/10.4271/2016-01-0890.Also In
References
- Wurms , R. , Budak , R. , Grigo , M. , Mendl , G. , Heiduk , T. , Knirsch , S. The new Audi 2.0l Engine with Innovative Rightsizing-A Further Milestone in the TFSI Technology 36th International Vienna Motor Symposium Vienna 2015
- REGULATION (EC) No 443/2009 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL 23 April 2009 Setting emission performance standards for new passenger cars as part of the Community’s integrated approach to reduce CO2 emissions from light-duty vehicles http://ec.europa.eu/clima/policies/transport/vehicles/cars/index_en.htm
- Worldwide harmonized light-duty vehicles Test Procedure (WLTP), United Nations Economic Commission for Europe (UNECE), Global Technical Regulation (GTR) No.15, ECE/TRANS/180/Add 15 Geneva 2014
- Diess , Herbert BMW i3+i8. Contemporary Drivetrains for a New Sheer Driving Pleasure 35th International Vienna Motor Symposium Vienna 2014
- Transport for London London Streets Performance Report Quarter 1 2012 2013 https://tfl.gov.uk/cdn/static/cms/documents/london-streets-performance-report-q1-2012-13.pdf
- Bulander , Rolf Powertrain Optimization using a comprehensive systems approach [ Bosch] 36th International Vienna Motor Symposium Vienna 2015
- CEC [ Coordinating European Committee] L-54-96 Fuel Economy Effect Of Engine Lubricants. M111 Fuel Economy test procedure
- ASTM D7589 Seq VID FE test procedure. For Specifications: ILSAC GF-5, API SN. Provides a comparative index of the fuel-saving capabilities of automotive engine oils under repeatable laboratory conditions. Using 2009 3.6 L V6 General Motors gasoline engine
- Brace , C. J. , Burke , R. D. and Moffa , J. 2009 Increasing accuracy and repeatability of fuel consumption measurement in chassis dynamometer testing Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 223 9 1163 1177 0954-4070
- Taylor , O. , Pearson , R. , Stone , R. , Carden , P. et al. Tribological Behavior of Low Viscosity Lubricants in the Piston to Bore Zone of a Modern Spark Ignition Engine SAE Technical Paper 2014-01-2859 2014 10.4271/2014-01-2859