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Mack Granite CNG truck exclusively equipped with Allison’s 4500 Rugged Duty Series transmission

Green Car Congress

When Mack set out to develop a vehicle for refuse collection customers seeking an alternative fuel solution, they were able to pair the proven 4500 RDS transmission with a 320-horsepower Cummins L9N engine. The 4500 RDS fully automatic transmission has been offered in the Mack Granite diesel model for more than 20 years.

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Studies highlight effects of different gasoline components on fuel economy, combustion and emissions

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Researchers at Jilin University (China) have investigated the effect of gasoline components on fuel economy, combustion and emissions in a GDI (gasoline-direct-injection) engine. The team subsequently followed up this first study with a second, exploring the effects in a PFI (port-fuel-injection) engine.

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EPA annual trends report finds new vehicle fuel economy at record 24.1 mpg; new powertrain technologies rapidly gaining share

Green Car Congress

EPA released the latest edition of its annual report on trends in CO 2 emissions, fuel economy and powertrain technology for new personal vehicles in the US. Among the top-level findings was that Model year 2013 vehicles achieved an average of 24.1 Adjusted fuel economy distribution by model year.

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NHTSA proposes updated CAFE standards for LDVs, fuel-efficiency standards for HD pickups and vans

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The proposal would also drive fuel efficiency improvements for heavy-duty pickup trucks and work vans. NHTSA’s proposed fuel economy standards complement and align with the Environmental Protection Agency’s recently proposed emissions standards for similar vehicle fleets.

Standards 283
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DOE awarding $59M to 43 projects to accelerate advanced vehicle technologies research

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The US Department of Energy (DOE) is awarding $59 million to 43 projects for new and innovative advanced vehicle technologies research. Annually, vehicles transport 11 billion tons of freight—more than $35 billion worth of goods each day—and move people more than 3 trillion vehicle-miles. The projects are:

Vehicles 270
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DOE announces $59M to accelerate advanced vehicle technologies research

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The US Department of Energy (DOE) announced up to $59 million for new and innovative advanced vehicle technologies research. Topic 4: Predictive Modeling Capabilities for the Co-Optimization of Fuels and Multi-Mode Engines ($3.5 Topic 5: New Materials and Engine Technologies for High Efficiency Powertrains (up to $15 million).

Vehicles 252
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UPS updates 125 Workhorse E-GEN series hybrid electric step vans with smaller genset engine for better fuel economy

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UPS announced an update to 125 Workhorse E-GEN series hybrid electric delivery trucks that improve fuel economy as part of the company’s broader Rolling Laboratory approach. A compact, quiet-running 650cc 2-cylinder engine replaces the previous 2.4L The smaller engine will improve fuel economy, however.