Examining the Influence of Road Grade on Vehicle Specific Power (VSP) and Carbon Dioxide (CO2) Emission over a Real-World Driving Cycle University of Leeds

Format:

Conference/Event

Author/Creator:

Wyatt, Wyatt, author.

Contributor:

Li, Hu

Tate, James

Conference Name:

SAE 2013 World Congress & Exhibition (2013-04-16 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2013

Summary:

The Carbon Dioxide (CO₂) emission from a EURO 3 diesel van overa real-world driving cycle were investigated utilizing part of theLeeds University - Headingly Ring Road (LU-HR) driving cycle, whichcomprises both an urban (congested) and extra-urban (high speed)driving section.The vehicle used in this research was a 1.8-liter Ford ConnectTDCi diesel van. Emissions were monitored by a Portable EmissionsMeasurement System (PEMS) incorporating an on-board FTIR (FourierTransform Infrared) exhaust emission measurement system, a HoribaOn Board emissions measuring System (OBS 1300) which measured theexhaust flow rate and air/fuel ratio, and a RaceLogic VBOX IIdifferential GPS system provided geographical position, speed andacceleration data.Route topography is known to have substantial influence onvehicle emission. The research reported in this paper was designedto investigate the effect of road grade on the test vehicle'sCO₂ emission across a real-world test drive cycle, employing aroute elevation profile derived from Digital Elevation Model (DEM)data.Vehicle Specific Power (VSP), representing the instantaneousengine power at each second of the vehicle's transit thoroughthe test cycle, has been demonstrated in a number of studies as anexcellent parameter for modeling CO₂ emission. The VSP calculationin this paper was enhanced through the incorporation of road grade,which was generated by mapping DEM elevation data to each second ofmeasured data recorded in the driving cycle test runs.This study also examines the impact that road grade has on VSPand CO₂ emission over the test cycle using a binning methodology toconstruct a modal emission estimation model to investigate thevehicle's CO₂ emission at both a mesoscale route and microscalesection level

Notes:

Vendor supplied data

Publisher Number:

2013-01-1518

Access Restriction:

Restricted for use by site license