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FEV working on water injection system using exhaust condensate; fuel consumption improvements up to 16% possible

Green Car Congress

FEV is developing a water injection system for internal combustion engines using condensate from exhaust gases, the “Extended Direct Condensate Injection” system. The concept, as reported in a new paper in the International Journal of Engine Research , demonstrates a potential for efficiency increase of 3.3% – 3.8%

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GM R&D study explores effect of temperature and O2 concentration on automotive low-load HCCI

Green Car Congress

Their paper is published in the International Journal of Engine Research. To understand the auto-ignition characteristics at low-load operation, the GM team investigated the effect of negative valve overlap, injection timing and external exhaust gas recirculation. Earlier post.). 5 512-524 doi: 10.1177/1468087412463304.

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ORNL-led team developing breakthrough high-temperature, high-strength Al alloy for advanced light-duty engines

Green Car Congress

Projected conditions for internal combustion engines in 2025 push light-duty engine exhaust temperatures into the low end of gas turbine regimes, Haynes said. The increasing piston, cylinder, head, exhaust valve and turbocharger temperatures represent significant structural materials—and cost—challenges.

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DARPA awards LiquidPiston $2.5M to advance further X4 rotary engine prototype

Green Car Congress

This is done by changing the locations of intake and exhaust ports asymmetrically which allows for the extraction of more energy during the expansion stroke. Three combustion events per rotor revolution result in high power density. Water may be injected to internally cool the engine. Shkolnik et al. 2014) Click to enlarge.

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Small-displacement two-stroke H2 engine could address performance and emissions cost-effectively for recreational market; potential for Asian motor vehicle fleet

Green Car Congress

Oh presented a paper on the work, which was the result of two years of research activity in conjunction with Bombardier Recreational Projects, at the ASME 2012 Internal Combustion Engine Division Fall Technical Conference. For one, the [California Air Resources Board] CARB-established limit of HC+NO x emissions in the 7.4 kW) rating.

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Behind Audi’s new “rightsized” efficient EA888 Gen.3B family

Green Car Congress

The new Audi engine combines shorter intake events with a high geometric compression ratio; together with other refinements to the basic engine, the new combustion concept enables a reduction in combined cycle CO 2 emissions of up to 10-12 g/km compared to its predecessor. Audi says that the new 2.0L 3B designation. The basic Gen.3B

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ICCT-led test of 73 Euro 6 diesels finds large difference in NOx results under NEDC and more realistic WLTC

Green Car Congress

A team from the International Council on Clean Transportation (ICCT) with colleagues from the US, China and Germany tested 73 Euro 6 diesel passenger cars on a chassis dynamometer over both the European type-approval cycle (NEDC, cold engine start) and the more realistic Worldwide harmonized light-duty test cycle (WLTC version 2.0,

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