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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 starting point of engine braking is marked by a vertical green line, and the end point is marked by a vertical red line.

Exhaust 319
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Study shows renewable diesel from crude tall oil is a high quality drop-in fuel for off-road engines

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A team from the University of Vaasa (Finland) and UPM-Kymmene Corporation has examined how the blends of fossil and renewable diesel produced from crude tall oil (CTO) affect the performance and exhaust emissions of the modern common-rail off-road diesel engine. No engine or parameter modifications were made.

Renewable 150
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ICCT: real-world NOx from Euro 6 diesel passenger cars more than 2x Euro VI diesel trucks

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In Europe, the average amount of NO x present in exhaust emissions from modern diesel passenger cars under real-world conditions is more than double the levels from modern trucks and buses, according to a new briefing paper released by the independent research organization International Council on Clean Transportation (ICCT).

Diesel 223
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Norwegian/Finnish studies find Euro 6 cars exceeding NOx and CO2 type limits in real-world conditions; below on PM

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Emission measurements conducted by Institute of Transport Economics in Norway, in collaboration with VTT in Finland, show that new Euro 6 cars with diesel engines are struggling with NO x emissions well in excess of regulatory type limits when in real traffic. Click to enlarge. —TØI Report 1407/2015.

CO2 150
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Neste files patent on gasoline fuels with high bioenergy content

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The resulting fuels with high bioenergy content can be used in conventional gasoline-fueled automotive engines. from VTT Technical Research Centre in Finland and Neste showed that a combination of ethanol or isobutanol with bio-hydrocarbon components offers an option to reach high gasoline bioenergy content for E10-compatible cars.

Gasoline 150
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Study finds that optimizing engine parameters for renewable diesel can reduce PM and NOx both by more than 25%

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Relative changes in PM characteristics (PM, N tot , GMD, FSN, and SA) on (a) 50%, (b) 75%, and (c) 100% loads and (d) NO x emissions due to engine parameter adjustments at the studied engine loads. It has been already reported that by changing the fuel from conventional EN590 diesel to HVO decreases exhaust emissions.

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