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Optimized heavy-duty CI engine fueled with DME delivers diesel performance, significantly reduces engine-out emissions

Green Car Congress

The engine was also equipped with an electrically driven volumetric pump in the exhaust gas recirculation (EGR) path which gives the freedom to set any desired EGR rate, independently from the pressure ratios across the turbocharger. EGR system consisting of an EGR cooler, an electrically driven EGR pump and respective piping.

Engine 368
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Audi presents latest SQ5 TDI diesel; 48V MHEV & electric compressor

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Audi has introduced the latest version of the SQ5 TDI diesel. The SQ5 TDI was first introduced in the fall of 2012 as the first Audi S model powered by a diesel engine. An actuator in the exhaust system, as fitted to the first SQ5 TDI, gives the V6 a sonorous sound. lb-ft) of torque. Many details of the V6 3.0 liters (0.2

Audi 269
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Westport and Scania preliminary testing shows H? HPDI delivers peak BTE of 51.5% at mid-load

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Westport’s HPDI fuel system technology enables heavy-duty trucks to operate on natural gas with the same power, torque, efficiency, and performance as diesel engines. Scania’s engine fulfils the strictest exhaust emission requirements with low fuel consumption and high torque. H2 HPDI operates the system with hydrogen.

Hydrogen 243
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ClearFlame Engine Technologies completes on-road demo of Class 8 truck with Cummins X15 running E98 ethanol

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ClearFlame Engine Technologies, a a startup developing net-zero engine technology ( earlier post ), successfully completed an on-road demonstration of its proprietary technology that enables a heavy-duty truck diesel engine to operate on low-carbon and carbon-negative fuels, including 100% renewable plant-based fuels.

Engine 334
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UK researchers report that alcohols in windshield washer fluid are major unreported source of VOCs emissions from cars, including EVs

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The levels of these non-fuel-derived gases will likely remain unchanged, even as more drivers transition from gas-powered to electric vehicles. These emissions are independent of the vehicle energy/propulsion system and therefore applicable to all road vehicle types including those with battery-electric powertrains. Cliff et al.

Emissions 397
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Audi’s mighty diesel: SQ8 TDI SUV coupé; 48V MHEV

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Audi’s sporty top model of the Q family, the SQ8 TDI SUV coupé, features a biturbo V8 TDI diesel that delivers 435 metric hp, 900 NN·mm (663.8 liter V8 TDI Biturbo engine with electric powered compressor (EPC). The biturbo V8 in the Audi SQ8 TDI is the most powerful passenger car diesel engine on the European market.

Diesel 236
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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. liter TDI diesel (EA288) will eventually replace all the 2.0-liter liter TDI Clean Diesel engines fitted in Audi and Volkswagen TDI Clean Diesel models, and as such, is a strategically important engine. The new MDB EA288 diesel.

Diesel 384