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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.

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EIA: light duty vehicle energy consumption to drop 25% by 2040; increased oil production, vehicle efficiency reduce US oil and liquid imports

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Energy consumption by light-duty vehicles in the United States, AEO2013 and AEO2014, 1995-2040 (quadrillion Btu). LDV energy consumption declines in AEO2014 Reference case from 16.0 quadrillion Btu in 2040 in the AEO2013 Reference case. Energy demand for aircraft grows in the AEO2014 Reference case from 2.5 Source: EIA.

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Chalmers team tests blends of OME3-5, HVO and RME in light- and heavy-duty CI engines

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A team at Chalmers University (Sweden) has tested blends of OME 3-5 , HVO and RME in a light- and heavy-duty CI engine. Performance and emissions were compared to the reference fuels fossil diesel and HVO in a single-cylinder light duty and heavy duty compression ignition engine at different loads. Preuß et al.

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Mazdas new SKYACTIV gasoline and diesel engines are steps on the road to its Ideal Engine; focus on compression ratio

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Mazda’s roadmap to the ideal internal combustion engine. From a powertrain frame of reference, Mazda is planning a building block strategy—i.e., ” The initial SKYACTIV-G (gasoline) and SKYACTIV-D (diesel) engines that are being applied into new vehicles this year and next show Mazda’s approach to the goal.

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UC Berkeley leading project investigating partial fuel stratification and microwave-assisted sparkplugs for LTC engines

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million project is supported by the US Department of Energy (DOE) and National Science Foundation as part of their collaborative research program for advanced combustion engines. Operating principle behind an engine using PFS. Ringing is analogous to knocking in spark-ignited engines.). The 3-year, $1.65-million Earlier post.)

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Lotus Engineering Phase 2 lightweighting study for ARB shows crashworthiness of low-mass body structures and potential for cost-effective mass production

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Source: Lotus Engineering. The California Air Resources Board (ARB) has published the results of Lotus Engineering’s Phase 2 vehicle mass reduction study on a Crossover Utility Vehicle (CUV). Body-in-white (BIW) refers to the end-product of the weld shop—i.e., Phase 2 body-in-white material usage front three-quarter view.

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Promising Delphi 1st-gen Gasoline Direct Injection Compression Ignition engine meeting ultra fuel efficient program targets

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In a presentation at the SAE 2014 High Efficiency IC Engine Symposium and then in a paper given at SAE 2014 World Congress, Mark Sellnau, Engineering Manager, Delphi Advanced Powertrain, reported that Brake Specific Fuel Consumption for the 1.8L Earlier post , earlier post.). Background. Earlier post.) DOE UFEV program targets.

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