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Study finds engines emit exhaust nanoparticles even when not fueled during engine braking

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Exhaust particle size distributions measured by ELPI (color map) and particle concentration measured by CPC (white line) during individual engine braking conditions (speed change from 32 km/h to 0 km/h). The exhaust sample was taken from the exhaust manifold. The exhaust sample was taken from the exhaust manifold.

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SAE Publishes Revised J1711 Standard to Measure Exhaust Emissions and Fuel Economy of Hybrids and Plug-in Hybrids

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The new version supersedes the J1711 standard originally published in March 1999. Also, the list of standard test procedures addressed in SAE J1711 has been expanded to cover all five major test cycle procedures (UDDS, HFEDS, US06, SC03, and Cold FTP) now being used to evaluate vehicle fuel economy. Earlier post.) Earlier post.)

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2014 Sprinter van for US standard with new 2.1L diesel; new driver assistance features

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The new MY2014 Mercedes-Benz Sprinter van for the US now features a 2.1L, 4-cylinder diesel with a t-speed automatic transmission as standard. The two overhead camshafts actuate 16 intake and exhaust valves. Charging takes place at all times via a two-stage exhaust-gas turbocharger system.

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California ARB petitions US EPA for “Tier 5” stricter locomotive emissions standards

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In an effort to accelerate the movement to zero- or near-zero emission locomotives, the California Air Resources Board (ARB) has petitioned the US EPA take action to adopt more stringent emission standards for locomotives. Top: Existing federal standards. Bottom: ARB’s proposed Tier 5 standard. Source: ARB. Click to enlarge.

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Nevada launches “Clean Cars Nevada” effort; adopting California LEV and ZEV

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Nevada Governor Steve Sisolak announced the “ Clean Cars Nevada ” initiative, which will evaluate the adoption of new regulations to provide Nevadans with more choices for low and zero emission electric passenger cars and trucks at dealerships throughout the state beginning in 2024.

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EPA Report: data show automakers on track in meeting Greenhouse Gas Standards after first year

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On Friday, the US Environmental Protection Agency (EPA) released a Manufacturers Performance Report that assesses the automobile industry’s progress toward meeting greenhouse gas (GHG) emissions standards for cars and light trucks in the 2012 model year—the first year of the 14-year program. A note on methodology and values.

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Study finds reduction of low-frequency noise from transition to electric buses improved residents’ health

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The other half, who lived some distance away, made up the reference group. In parallel, noise measurements were performed in several homes—including indoors, which is not otherwise standard procedure. Half of the residents lived in homes that lined the bus route in two city districts: Masthugget and Lunden.

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