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CARB releases results of multi-year E15 study; multiple air quality benefits with slight reduction in fuel economy

Green Car Congress

The California Air Resources Board (CARB) has released the results of a multiyear study evaluating exhaust emissions from the use of California Reformulated Gasoline (CaRFG) that contains 15 volume percent ethanol (E15). The vehicle test matrix had provisions for five vehicles on each emissions standards category (i.e.,

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

Green Car Congress

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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US study of miners links heavy exposure to diesel exhaust to increased risk of lung cancer death; researchers suggest implications for urban areas with high exhaust concentrations

Green Car Congress

In a study of non-metal miners in the US, federal government scientists report that heavy exposure to diesel exhaust increased risk of death from lung cancer. For never-smokers, risk of lung cancer death increased with increasing diesel exhaust exposure. effect of diesel exhaust exposure on lung cancer mortality in.

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UC Riverside team examines influence of mid-and high-level ethanol blends on pollution from GDI flex fuel vehicle

Green Car Congress

Regulated emissions for all test fuels over the cold-start and hot-start LA92 cycles. Regulated emissions for all test fuels over the cold-start and hot-start LA92 cycles. Data presented as mean ± standard deviation, N=3. Their paper is published in the ACS journal Energy & Fuels. Yang et al. —Yang et al.

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New study to investigate emissions from commercial buses in fleet operations

Green Car Congress

The Brighton & Hove Bus and Coach Company is working with Ricardo and test equipment specialist HORIBA on an advanced research project in the UK that aims to investigate the emissions of a range of buses operating in a modern commercial public transport fleet.

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Study finds PM from biodiesel blends may be 50-80% less toxic per unit PM mass than from petroleum diesel

Green Car Congress

However, the relative toxicity of biodiesel emissions compared to petroleum diesel remains unclear. In the study, the team examined the relationships between biodiesel fuel blend, exhaust particle oxidative potential (OP), and PM composition. PM-normalized DTT Activity for biodiesel exhaust PM.

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First results from HEI/ACES murine study find few biologic effects from exposure to exhaust from new technology diesel engines

Green Car Congress

The study—a component of the Advanced Collaborative Engine Study (ACES)—is exposing rats and mice for 16 hours a day to emissions from a heavy duty diesel engine meeting 2007 US EPA standards that reduce emissions of fine particles and other pollutants by more than 90% from levels emitted by older engines.

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