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Volkswagen continues to optimize its EA888 workhorse engine; fourth evolution in 2022 Golf GTI and R

Green Car Congress

The 2022 Golf GTI makes 241 horsepower and delivers an EPA-estimated 34 mpg on the highway. The 2022 Golf R adds all-wheel drive, delivers 315 horsepower, and achieves an EPA-estimated 30 mpg on the highway with the optional DSG dual-clutch automatic. liters (1,984 cc). From the moment air is introduced into the 2.0-liter

Engine 397
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ORNL researchers quantify the effect of increasing highway speed on fuel economy

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This website, jointly maintained by the US Department of Energy and the US Environmental Protection Agency (EPA), provides information such as official EPA “window label” fuel economy estimates for city, highway, and combined driving for all U.S.-legal legal light-duty vehicles from 1984 to present. Speed increase.

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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. Diesel particulate filters (DPF) and urea-based selective catalytic reduction (SCR) exhaust after-treatment systems thus have emerged as feasible strategies to meet the 2010 USEPA regulations.

Exhaust 218
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MECA report finds additional NOx emission reductions from new heavy-duty trucks achievable and cost-effective (corrected)

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g/bhp-hr NO x , which is 90% below today’s standards, with better fuel economy. Penetration of fuel saving technologies into the heavy-duty fleet has been spurred by EPA’s Heavy-Duty Greenhouse Gas Phase 1 Standards, and EPA envisions further penetration of these technologies in order for trucks to meet future Phase 2 requirements.

Emissions 221
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Environment Canada/MECA team assesses black carbon emissions in GDI engine exhaust; evaluation of prototype gasoline particulate filter

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This may result in the need for new emissions control strategies—such as a gasoline particulate filter (GPF)—to enable compliance with California LEV III and US EPA Tier 3 particulate emissions standards. The major difference between the PFI and GDI engines lies in the fuel injection method and mixture preparation.

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

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Data presented as mean ± standard deviation, N=3. The researchers used four fuels: a baseline US EPA Tier 3 E10 fuel; one E10 fuel with higher aromatics content than the baseline E10; an E30 fuel that was splash-blended with the Tier 3 E10; and an E78 fuel. Their paper is published in the ACS journal Energy & Fuels. Yang et al.

Pollution 255
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Ford study shows Rankine waste heat recovery system on a light-duty vehicle could almost meet full vehicle accessory load on highway cycle

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However, in city driving, the ORC system would supply about half of the accessory load requirement for a conventional engine, and only about one-third of the load requirement for a hybrid powertrain, due to the frequent engine off condition, according to the results presented by Quazi Hussain.

Waste 220