This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Fuel Economy and Cabin Heating Improvements Thanks to Thermal Management Solutions Installed in a Diesel Hybrid Electric Vehicle
Technical Paper
2010-01-0800
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
With the aim of reducing CO2 emissions, several solutions exist presenting different performances and costs. Hybrid electric vehicle is one of the most efficient solutions and lead to fuel consumption and CO2 emissions reduction of 10 to 60 % compared to conventional vehicle and depending on the level of hybridisation and the considered speed cycle.
In the context of the European project Hi-CEPS (Highly integrated Combustion Electric Propulsion System), several thermal management solutions have been investigated with the aim of increasing the global vehicle efficiency and tackling hybrid-vehicle-specific cabin comfort challenges such as cabin heating.
Intermittent operation of the engine in a hybrid electric vehicle (Stop & Start, pure electric vehicle mode) has detrimental effects on engine and cabin warm-up. Indeed, a longer time is usually required to reach operating coolant and oil temperatures, hence a longer time before the engine friction is minimised and before the thermal steady-state combustion efficiency is reached.
Models of the vehicle thermal systems have been developed and coupled to Ricardo's vehicle systems model enabling the estimation of fuel consumption and CO2 emissions.
The coupled model was used to assess systems and strategies (like latent or sensible heat storage tank for coolant or lubricant, zero coolant flow-rate inside engine during warm-up but also electric thermostat during thermal steady-state driving conditions) in terms of fuel consumption and/or cabin comfort improvements.
The article will present the simulation's methodology, how the simulation can help to understand the thermal issues encountered on a hybrid electric vehicle and also the fuel consumption and CO2 emissions decrease thanks to different thermal management solutions.
Recommended Content
Authors
Topic
Citation
Revereault, P., Rouaud, C., and MarchI, A., "Fuel Economy and Cabin Heating Improvements Thanks to Thermal Management Solutions Installed in a Diesel Hybrid Electric Vehicle," SAE Technical Paper 2010-01-0800, 2010, https://doi.org/10.4271/2010-01-0800.Also In
References
- Greenwood D. Ricardo Quaterly Review Q3 2006 http://www.ricardo.com/Documents/RQ%20pdf/RQ%202006/RQ-Q3-2006.pdf
- Kuze, Y. Kobayashi, H. Ichinose, H. Otsuka, T. “Development of New Generation Hybrid System (THS II) - Development of Toyota Coolant Heat Storage System-,” SAE Technical Paper 2004-01-0643 2004
- Neuschutz M. High performance latent heat battery for cars http://www.fskab.com/ANNEX10/WS_pres/WS3/neuschuetz.pdf
- Van Basshuysen, R. Schafer, F. “Internal Combustion Engine Handbook, Basics, Components, Systems, and Perspectives,” SAE International Warrendale, PA 978-0-7680-1139-5 2004
- Feulner P. Electricity, Power, Heat - What are potential roles of additional energy-converters in future vehicles - a screening of technologies concerning cycles, integration and consequences FISITA, World Automotive Congress 14-19 September 2008 Munich, Germany