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Study finds high exhaust temperatures within NTE operation for heavy-duty diesels with aftertreatment systems contribute to high nanoparticle concentrations

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The transient results illustrate the gradual formation of the nucleation mode particles with continuous increase in exhaust temperatures. The particle number count under those conditions increased by more than an order of magnitude in comparison to DPF-out particle concentrations. Credit: ACS, Thiruvengadam et al. Click to enlarge.

Exhaust 218
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Hyundai introduces 2015 Sonata Eco with 1.6L Gamma turbo; 32 mpg combined

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As a comparison, the baseline 2015 Sonata with 2.4-liter liter engine is EPA-rated at 29 mpg (8.1 million), uses an exhaust manifold integrated turbocharger with twin scroll, air-guided intercooler, direct fuel injection system and dual CVVT, while a bed plate and a serpentine auxiliary belt were adopted to enhance engine reliability.

MPG 239
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A closer look at the basics of Volkswagen Group’s important new 2.0L diesel MDB engine

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liter diesel, prominently showing the closely attached exhaust aftertreatment system. For example, depending on the emission requirements, 3 different types of exhaust gas recirculation (EGR ) can be used: cooled high-pressure EGR without low-pressure EGR; cooled low-pressure EGR without high-pressure EGR; or. The EA288 2.0-liter

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EPA Awards $2M to Small Businesses to Develop Sustainable Technologies; Includes Biofuel, Emissions Reduction Projects

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The US Environmental Protection Agency (EPA) has awarded $2.38 emissions from small handheld tow-stroke engines have decreased in recent years as a result of EPA regulations on these engines. million to 34 small businesses to develop innovative, sustainable technologies to protect human health and the environment.

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GM uses lightweight, advanced materials to reduce weight on 2015 Colorado pickup

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Mass comparison, 4x4 crew cabs. Chevrolet expects EPA fuel economy estimates for Colorado this summer. Reflecting the attention to weight savings found throughout the Colorado, the aluminum heads for the V-6 feature integral exhaust manifolds, which save about 13 pounds (5.9 Based on current GM testing, the standard 2.5L

Colorado 262
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Transonic Looking at Final Funding Round This Year, Production Deployment of Supercritical Fuel System in 2014; 50-75% Improvement in Engine Fuel Economy

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The chart shows heat release from a standard diesel combustion cycle (solid black line), overlaid with the heat release from a TSCi cycle (dashed blue line). TSCi combustion minimizes heat loss to the cylinder walls and in the exhaust. The Syracuse team, for example, is using exhaust gas heat to help bring the fuel to SC states.)

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GM: new Sierra 5.3L V-8 EcoTec3 highway fuel economy tops Ford EcoBoost V-6

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EcoTec3 V-8 engine ( earlier post ) equipped with direct injection, cylinder deactivation (AFM) and variable valve timing to achieve EPA estimates of 16 mpg city (14.7 2WD Pickup truck fuel economy comparisons. 2WD Pickup truck fuel economy comparisons. Source: GM, Ford, Model Year 2013 EPA Fuel Economy Guide.

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