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GM to introduce strong hybrid version of Malibu; combined fuel economy above 45 mpg; leverages Volt

Green Car Congress

GM will introduce a strong hybrid version of the next-generation Malibu. Using technology from the 2016 Chevrolet Volt propulsion system ( earlier post ), Malibu Hybrid will offer an estimated combined fuel economy rating exceeding 45 mpg (5.22 Additional fuel economy benefits come from Exhaust Gas Recirculation, or EGR.

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ORNL study finds multi-mode RCCI can offer 15%+ fuel economy improvements across multiple light-duty driving cycles

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Drive cycle fuel economy for PFI, CDC, and multi-mode RCCI operation. Among their findings were that multi-mode RCCI has the potential to offer greater than 15% fuel economy improvement over a 2009 gasoline PFI baseline over many light-duty driving cycles, despite the lack of complete drive cycle coverage for RCCI mode.

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GM Ventures portfolio company SDCmaterials secures 1st supply agreement for cost-saving advanced catalyst products for autos

Green Car Congress

The automotive catalytic converter, developed in the early 1970s primarily by General Motors and BASF/Engelhard and first deployed in 1975, changes exhaust pollutants into CO 2 , water vapor and nitrogen. Today, a typical original equipment automotive catalytic converter in a gasoline engine contains about $100 in precious metal.

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Frost & Sullivan forecasts Gasoline Particulate Filters to climb from 50,335 units now to 4.2-4.6 million units by 2020

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Gasoline direct injection (GDI) is a strategy to improve fuel efficiency that is rapidly gaining market acceptance. fuel injection timing, number of injections, fuel pressure, injector placement, etc.) and fuel properties. Ford and GM, will account for 11.5–13.5% Earlier post.)

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Cummins & Tula demonstrate Diesel Dynamic Skip Fire (dDSF) cylinder deactivation; up to 66% reduction in NOx on CARB LLC #7

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By using dDSF software to control cylinder deactivation in a diesel engine, Cummins and Tula demonstrated significant reductions in emissions and fuel consumption. Like DSF for gasoline engines, dDSF uses individual cylinder deactivation control strategies to meet torque demand at optimal fuel and aftertreatment efficiency.

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Opel presents new midsize gasoline engine at Aachen Colloquium; fuel consumption down 13%, torque and power up 33%

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Opel revealed more details about its new mid-size gasoline engine family at the Aachen Colloquium in Germany. liter, four-cylinder, SIDI (spark ignition direct injection) ECOTEC Turbo engines, which begin Opel’s renewal of its powertrain portfolio, deliver improved fuel consumption, performance and refinement. SIDI engine.

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Jacobs and Tula to cooperate on CDA valve actuation with Dynamic Skip Fire control

Green Car Congress

Cylinder Deactivation leverages Jacobs’ well-established componentry to disable engine valves in selected cylinders allowing a large engine to have the fuel economy of a smaller engine. Also, higher exhaust temperatures in operating cylinders maintain aftertreatment temperatures at low load conditions and start-up.

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