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Cummins Westport begins development on new mid-range natural gas engine; production by 2015

Green Car Congress

liter natural gas engine designed to meet the increasing demand for on-highway vehicles powered by natural gas. diesel engine and will use Cummins Westport’s proven spark-ignited, stoichiometric cooled exhaust gas recirculation (SEGR) technology. Firing pressure are higher, so your ignition systems need to be designed differently.

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New VW EA288 diesel to debut in 2H 2014 in the MY 2015 Golf, Jetta, Passat and Beetle; MDB comes to the US (updated with diagrams)

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This powerplant shares only the bore spacing with the previous diesel engine that had the same designation. In a briefing last week at Volkswagen’s annual media conference, Dr. Johannes Arning, of Volkswagen’s Powertrain Product Management group, noted that the new MDB offers five major features: Improved basic engine.

Diesel 307
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Pinnacle’s opposed-piston scooter engine can meet NOx target with lean operation and ignition delay; little fuel economy hit

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Further, Pinnacle noted, recently developed hardware designed for additional lean limit extension is under test. —Willcox and Cleeves (2013). The new hardware is anticipated to leave margin with Euro 5/6 NO x regulations using an oxidation-only catalyst for aftertreatment. What can we use that for? —Monty Cleeves.

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CPT and Eminox to collaborate on development of retrofit electric supercharging and aftertreatment solutions for heavy-duty vehicles

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Having better control over the combustion process reduces the emission load on the exhaust aftertreatment systems. Eminox SCRT technology can significantly reduce harmful diesel exhaust gases, particularly in urban operating conditions. The need for this technology is driven by ever tightening legislation. Earlier post.)

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Ford / AVL study concludes mid-level ethanol blend attractive as a long-term future fuel for use in optimized engines in US

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The team presented a paper on their work at the 2013 SAE World Congress in Detroit. Ford engineers also presented two other papers evaluating the effects of low to mid-level ethanol blends in spark-ignited engines at the conference. Thus, the benefit of increased CR enabled by increasing ethanol content is engine design specific.

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Motiv Engines introduces 2nd-generation split-cycle concept; MkII Clarke-Brayton heavy-duty engine being designed for LNG

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The thermodynamics of the engine are virtually identical to the company’s previous CCI (Compact Compression Ignition) design, as described in a 2013 SAE paper, but are implemented in a much more conventional way. It expands all the way to ambient pressure before the exhaust stroke. All valves are actuated by overhead cams.

Engine 345
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Audi introduces 2015 Audi A3 and S3 sedans; A3 Sportback e-tron PHEV confirmed for US

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Audi recently revealed the A3 Sportback e-tron at the 2013 Geneva Motor Show. The Audi A3 Sportback e-tron uses a parallel hybrid design. Using the existing Wi-Fi connectivity for up to 8 devices, passengers can now view high-definition videos and make video conference calls from the vehicle. Earlier post.). TDI clean diesel.

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