On Board Exhaust Emission Measurement on Heavy Duty Vehicles Driven on Alternative Fuels AVL MTC AB

Format:

Conference/Event

Author/Creator:

Almen, Almen, author.

Contributor:

Ohlund, Per

Conference Name:

SAE 2012 International Powertrains, Fuels & Lubricants Meeting (2012-09-18 : Malmo, Sweden)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

The present wording of implementing the regulation fortype-approval of motor vehicles and engines with respect toemissions from heavy-duty vehicles (e.g., Euro VI requirements)describes the procedure to determine gaseous emissions from on-roadmeasurements using Portable Emissions Measurement Systems (PEMS).Emissions to be measured according to the PEMS protocol are carbonmonoxide (CO), total hydrocarbons (HC) nitrogen oxides(NOx) and carbon dioxide (CO₂). Measurement methods ofparticles will be included in the Euro VI requirements.Emission results from on-road testing can be used for In ServiceConformity (ISC) pass/fail criteria but also for establishingemission factors for specific routes and verification of the fuelimpact on the emissions. During onboard measurement, emissionsampling, measurement of the exhaust parameters and recording ofthe engine parameters as well as ambient data shall continuethroughout the normal in-use operation of the vehicle, id est,driving conditions that are mostly used by the operator or fleetowner of the particular vehicle type.During the past years a PEMS pilot study has been carried out inSweden, supported by The Swedish Transport Agency, in order toverify the emissions from different types of heavy-duty vehiclesand fuels.This paper presents some of these results with focus onevaluating the impact on emissions measured with a PEMS instrumentwith regard to different alternative fuels such as Fatty-AcidMethyl Ester (FAME), Dimethyl Ether (DME), Ethanol and CompressedNatural Gas (CNG) when the vehicles are driven on the road during anormal working day. The results are compared with emissions from adiesel vehicle

Notes:

Vendor supplied data

Publisher Number:

2012-01-1705

Access Restriction:

Restricted for use by site license