Simplified Methodology for Modeling Cold Temperature Effects on Engine Efficiency for Hybrid and Plug-in Hybrid Vehicles Argonne National Laboratory

Format:

Conference/Event

Author/Creator:

Jehlik, Jehlik, author.

Contributor:

Christenson, Martha

Rask, Eric

Conference Name:

SAE 2010 Powertrains Fuels & Lubricants Meeting (2010-10-25 : San Diego, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2010

Summary:

For this work, a methodology of modeling and predicting fuelconsumption in a hybrid vehicle as a function of the engineoperating temperature has been developed for cold ambient operation(-7°C, 266°K). This methodology requires two steps: 1) developmentof a temperature dependent engine brake specific fuel consumption(BSFC) map, and, 2) a data-fitting technique for predicting enginetemperature to be used as an input to the temperature dependentBSFC maps. For the first step, response surface methodology (RSM)techniques were applied to generate brake specific fuel consumption(BSFC) maps as a function of the engine thermal state. For thesecond step, data fitting techniques were also used to fit asimplified lumped capacitance heat transfer model using severalexperimental datasets.Utilizing these techniques, an analysis of fuel consumption as afunction of thermal state across a broad range of engine operatingconditions is presented. These techniques allow for prediction offuel consumption for a vehicle as a function of the engine'soperation and temperature. Results will be shown over repeatedUrban Dynamometer Driving Schedule (UDDS) and US06 cycles at anambient test cell temperature of 266°K. Details into thevariability of fueling rates under a broad range of enginetemperatures are presented. Certain details into the technique willbe presented, as well as analysis comparing the model toexperimental datasets

Notes:

Vendor supplied data

Publisher Number:

2010-01-2213

Access Restriction:

Restricted for use by site license