Remove Exhaust Remove Legal Remove Pollution
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New Emissions Analytics study suggests pollution from tire wear now 1,850 times worse than exhaust emissions

Green Car Congress

In early 2020, UK-based independent testing firm Emissions Analytics published a study claiming that tire particulate wear emissions were 1,000 times worse than exhaust emissions ( earlier post ). As a result, distance-specific mass and number emissions can be derived, which can then be compared to equivalent tire metrics.

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Bosch says it has solved diesel NOx problem; as low as 13 mg NOx/km even under RDE; refining existing technologies

Green Car Congress

But even today, vehicles equipped with Bosch diesel technology can achieve as little as 13 milligrams of NO x in standard legally-compliant RDE cycles. A dynamic driving style demands an equally dynamic recirculation of exhaust gases. To ensure optimum NO x conversion, the exhaust gases must be hotter than 200 degrees Celsius.

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ICCT study concludes no technical barriers to use of higher blends of ethanol

Green Car Congress

The consumption scenarios are technically achievable but do not reflect significant barriers such as cost, regulation, legality, and consumer acceptance. Theoretically, cars operating on higher ethanol blends than the design point could emit greater concentrations of pollutants in exhaust gas. Source: ICCT. Click to enlarge.

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Faurecia acquires Amminex to accelerate efficient NOx reduction for passenger and commercial vehicles

Green Car Congress

Amminex has developed an Ammonia Storage and Delivery System (ASDS) which has demonstrated its efficiency to almost completely eliminate nitrogen oxide (NO x ) pollutants from diesel engines. Conventional dosing technology is based on spraying an aqueous urea solution (diesel exhaust fluid, DEF) into the exhaust stream.

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Hagens Berman files class-action fuel economy and emissions lawsuit against Fiat Chrysler and Cummins over SCR defect in RAM 2500 and 3500 diesels

Green Car Congress

FCA and Cummins allegedly knew about the washcoat defect for years—at least as early as 2014—but failed to take action to mitigate the drop in the trucks’ performance or prevent the illegally high levels of pollution emitted by affected RAM trucks.

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Continental urea sensors for efficient SCR NOx aftertreatment in diesels; measuring level, quality and temperature

Green Car Congress

Continental has begun production of urea sensors for the first time to support more efficient exhaust-gas aftertreatment in diesel engines. The sensor-aided denitrification supports fulfillment of the legal requirements and reinforces drivers’ trust that their car emits no more than the maximum permissible level of nitrogen oxides.

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JRC provides initial results and qualitative trends of study of regulated gaseous emissions under NEDC and new WLTP; data from 21 vehicles

Green Car Congress

The result is a compendium of experimental data regarding the regulated gaseous pollutants and fuel consumption on 21 vehicles. Measured THC emissions from most vehicles stayed below the legal emission limits and in general were lower under the WLTP compared to NEDC.

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