Supplier Spotlight

Video Exclusives

Lucid Air prototype testing

gtr

With 1,000hp and up to 400 miles driving range, the Lucid Air is one of the most exciting EC developments of the year so far. Watch here the prototype being tested earlier this year.


Audi Q8 concept

gtr

As Audi gets ready to launch the Q8 PHEV production model, here's a detailed under-the-skin look into its 330kW, 700Nm, 1,000km driving range powertrain.

Click here/on image to watch video

Web Exclusives

« back to listing

Measuring nanoparticles in exhaust emissions

NanoMet3 is a new instrument for Portable Emission Measurement Systems (PEMS) application to measure number concentration and diameter of nanometer-sized particles

 

It has a compact, portable and rugged design, and provides online response. Due to these properties, it is a useful instrument for particle number concentration measurements in non-laboratory settings and even OBD instrumentation. 

It is 12V DC battery operated and therefore appropriate for onboard and field measurements. The measurement range is suitable for vehicle exhaust emission concentrations (diluted 3E3-3E8pt/cm3) and the response time is short enough to measure transient engine operation. Matter Aerosol believes that NanoMet3 is therefore the ideal candidate for in-use compliance testing, as well as for future PEMS type approval.
For certain applications, PEMS have been proven to better identify in-use performance of vehicles than standard laboratory measurements, since they are designed to measure emissions during the actual use of an internal combustion engine vehicle or equipment in its regular daily operation under real-world conditions. Furthermore, PEMS constitute a cost-effective solution to perform in-service testing of engines: rather than extracting the engines from the vehicles and then installing them on an engine dynamometer to run their official regulatory cycles, the vehicles are equipped with onboard emission measurement systems and then tested during their real in-use operation.
The PEMS methodology and approach has been recognized by many governmental entities including the US Environmental Protection Agency and the United Nations Framework Convention on Climate Change. Particle counting on diesel cars is mandatory through Euro 5B since September 2011. The European Union and other countries throughout the world will continue to integrate particle counting into their emissions standards, especially since the World Health Organization identified diesel exhaust as one of the most dangerous pollutants.
The increasing importance of accurate and cost-effective testing has become a significant issue for the industry. Vast experience in nanoparticle measuring equipment for automotive, laboratory and ambient applications has enabled Matter Aerosol to develop a rugged, portable and cost-effective solid nanoparticle counter.
When a standard dilution tunnel such as a constant volume sampling (CVS) tunnel is used for emissions testing, the volatile substances may condense into nanodroplets, which are detected as particles together with nonvolatile solid particles. To measure only the solid particle fraction, it is necessary to condition the sample thermally in order to eliminate the volatile fraction. NanoMet3 features a separate exhaust probe and control unit that effectively dilutes the sample at the source (tailpipe, CVS tunnel or stack) in order to preserve it for accurate measurement.
The portable system is completed with Matter’s proprietary Diffusion Size Classifier technology, a new sensor for measuring the number concentration and average diameter of nanometer-sized particles. Since its measuring principle uses electrical charging to count particles, it not only enhances the quality of the global measurement but also the cost of acquisition, and costs per test are significantly lower. Hydrocarbon emission measurement will no longer be affected by butanol contamination in the testing room, nor will it be influenced by contaminated air.

 

 

30 April 2013

Read Latest Issue

International Engine of the Year Awards
Read Latest Issue
Read Latest Issue

Web Exclusive Articles

Fleet trialling sustainable ethanol fuel
Clariant, in conjunction with Mercedes-Benz and Haltermann Carless, have been trialling the use of sustainable cellulosic ethanol on a number of vehicles over a twelve month period
Read Now

Engines on test: MG SGE-LFV GDI 1.5-liter
Is the sole engine available for the MG GS good enough to support the entire range? We find out as we test the Opel, SAIC, MG and Shanghai GM co-developed SGE-LFV GDI 1.5-liter turbo
Read Now

McLaren unveils twin-turbocharged V8
The UK OEM gives the knowledge and all the exclusive details behind the M480T engine
Read Now


Submit your industry opinion

Industry BlogDo you have an opinion you'd like to share with the engine technology community? We'd like to hear your views and opinions on the leading issues shaping the industry. Share your comments by sending up to 500 words to d.slavnich@ukimediaevents.com

Submit Your Recruitment Ad

Recruitment AdTo send us your recruitment advertising or to receive information on placing a banner please email aboobaker.tayub@ukimediaevents.com