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Study shows two-stroke scooters dominant source of air pollution in many cities; asymmetric polluters

Green Car Congress

A study by European researchers has found that two-stroke (2S) scooters, although constituting a small fraction of the fleet, can dominate urban vehicular pollution through organic aerosol and aromatic emission factors up to thousands of times higher than from other vehicle classes. —Platt et al.

Pollution 362
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IHS: continued legislative focus on pollutants to drive sensor market for internal combustion engines

Green Car Congress

The global market for sensors used in internal combustion engines (ICE) is on the road of steady growth for the next few years, propelled by increasing utilization in engine management and exhaust aftertreatment, according to a new report from IHS Technology. IHS projects that sensor shipments for ICEs will top 1.34 billion in 2013.

Pollution 210
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Swiss team concludes that particulate filters should be mandatory for GDI engines

Green Car Congress

Based on a three-year study of toxic and environmentally relevant pollutants from gasoline direct injection (GDI) engines, Swiss researchers have concluded that some GDI engines emit just as many soot particles as unfiltered diesel cars did in the past. Further, the GDI particles carry numerous carcinogenic substances.

Engine 271
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Tula presenting diesel Dynamic Skip Fire technology at Future Diesel Powertrain Summit in Shanghai

Green Car Congress

Comparison of baseline and dDSF CO 2 and NO x on HD FTP cycle and LLC. Like DSF for gasoline engines, dDSF uses individual cylinder deactivation control strategies to meet torque demand at optimal fuel and aftertreatment efficiency. Cylinder deactivation also reduces excess engine airflow, increasing exhaust temperatures.

Diesel 221
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EEA report: EVs are better for climate and air quality

Green Car Congress

Battery electric cars emit less greenhouse gases and air pollutants over their entire life cycle than petrol and diesel cars, according to a European Environment Agency (EEA) report. For local air quality, electric vehicles also offer clear benefits, mainly due to zero exhaust emissions at street level.

Climate 268
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Ricardo demos real-world driving emissions testing at Air Quality show

Green Car Congress

The system uses absorption spectroscopy to monitor and record emissions from a vehicle’s exhaust as it passes by a road-side sensor. This data promises to play an important role in providing cities and local authorities with the insight they need to develop Clean Air Zones and other air pollution mitigation measures.

Emissions 170
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Mercedes-Benz powering ahead with €3B strategic engine initiative; increasing electrification, 48V; diesel and gasoline; cylinder deactivation

Green Car Congress

The new six-cylinder in-line gasoline engine M 256 features a 48 V electrical system. The M 256 is the first member of a new family of premium gasoline engines that have for the first time been systematically designed for electrification from the outset. Mercedes-Benz is investing a total of around €3 billion (US$3.3 Click to enlarge.

Gasoline 150