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CARB releases results of multi-year E15 study; multiple air quality benefits with slight reduction in fuel economy

Green Car Congress

The California Air Resources Board (CARB) has released the results of a multiyear study evaluating exhaust emissions from the use of California Reformulated Gasoline (CaRFG) that contains 15 volume percent ethanol (E15). California currently limits the ethanol content of gasoline to 10 percent.

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Volvo Trucks’ D13 Turbo Compound engine now standard on all VNL models; 6% better fuel economy over 2020 engine

Green Car Congress

The enhanced D13 Turbo Compound (D13TC) engine from Volvo Trucks is now standard on all Volvo VNL models, providing enhanced fuel efficiency and reducing overall cost of ownership. In Europe and other key markets, the D13TC engine has exceeded expectations and has proven to be fuel efficient, reliable and popular with drivers.

Volvo 243
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Eaton expands valvetrain portfolio for off-highway vehicles to help reduce CO2 and NOx

Green Car Congress

Power management company Eaton has expanded its portfolio of valvetrain solutions for diesel off-highway vehicles to help OEMs reduce emissions and improve fuel economy. This technology enables precise valve lift control through HLA, coupled with engine braking capability, which in turn helps reduce emissions and improve fuel economy.

Eaton 269
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UC Riverside team examines influence of mid-and high-level ethanol blends on pollution from GDI flex fuel vehicle

Green Car Congress

Their paper is published in the ACS journal Energy & Fuels. Regulated emissions for all test fuels over the cold-start and hot-start LA92 cycles. A fuel economy penalty was also observed for lower energy content E30 and E78 blends compared to both E10 fuels. Data presented as mean ± standard deviation, N=3.

Pollution 255
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Cummins & Tula demonstrate Diesel Dynamic Skip Fire (dDSF) cylinder deactivation; up to 66% reduction in NOx on CARB LLC #7

Green Car Congress

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.

Diesel 286
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Study finds catalyzed gasoline particulate filters effective at reducing particulate and PAH emissions from GDI engines

Green Car Congress

Testing was conducted over the LA92 and US06 Supplemental Federal Test Procedure (US06) driving cycles on typical California E10 fuel. California LEVIII and US Tier 3 regulations will begin a four year phase-in starting in 2015 and 2017, respectively, to a PM maximum of 3 mg/mile from the current 10 mg/mile LEVII limit.

Gasoline 253
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MECA report finds additional NOx emission reductions from new heavy-duty trucks achievable and cost-effective (corrected)

Green Car Congress

g/bhp-hr NO x , which is 90% below today’s standards, with better fuel economy. Penetration of fuel saving technologies into the heavy-duty fleet has been spurred by EPA’s Heavy-Duty Greenhouse Gas Phase 1 Standards, and EPA envisions further penetration of these technologies in order for trucks to meet future Phase 2 requirements.

Emissions 221