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Blue Bird first to offer certified ultra-low NOx level for propane school buses; 0.02 g/bhp-hr

Green Car Congress

Blue Bird’s Vision Propane buses now offer an optional ultra-low NO x engine—developed in partnership with Roush CleanTech, and certified by both the EPA and California Air Resources Board at 0.02 CARB has further encouraged engine manufacturers to reduce levels below the current mandatory EPA standard of 0.2

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Ryder sees increasing demand for heavy-duty natural gas trucks; expanding California program to other states

Green Car Congress

a leader in commercial transportation and supply chain management solutions, has already secured lease agreements for 87 heavy-duty natural gas trucks from customers looking to take advantage of the fuel cost savings and environmental benefits of alternative fuel powered vehicles. Ryder System, Inc., Earlier post.).

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Volvo Trucks approves use of renewable diesel fuel

Green Car Congress

Volvo Trucks North America, after concluding truck and engine lab testing, has approved the use of renewable diesel fuel for all of its proprietary Volvo engines, offering environmental and cost-savings benefits to customers. Volvo is the first OEM to endorse the use of advanced drop-in hydrocarbon renewable diesel fuel.

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Santa Monica signs 5-year deal with Clean Energy for renewable LNG for bus fleet; deploying CWI Near-Zero NOx engine

Green Car Congress

The City of Santa Monica, California has awarded Clean Energy a multi-year liquefied natural gas (LNG) contract to fuel its Big Blue Bus (BBB) fleet of vehicles. LNG derived from biomethane is a low carbon fuel, which, under some conditions, offers a carbon intensity (CI) equal to or lower than that of electricity. Earlier post.)

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

Green Car Congress

Exhaust aftertreatment will be provided by a simple, maintenance-free three-way catalyst (TWC). The SEGR technology was introduced with the ISL G in 2007, and was developed to meet 2010 EPA emission requirements. In our experience, that has been a very good compromise for the use of natural gas in many applications. The ISB 6.7

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New UMTRI paper reviews major advantages and disadvantages of battery-electric and fuel-cell vehicles

Green Car Congress

In their report, Schoettle and Sivak used a national average fuel price for electricity of $0.12/kWh kWh (EPA is now using $0.13 For example, in the San Diego, California territory of SDG&E, optimal time of use residential EV charging rates range from $0.19/kWh mp and a fuel price of $2.35 kWh to $0.46/kWh

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Study suggests high-mileage light-duty fleets contribute higher emissions and emissions share than expected

Green Car Congress

California uses the EMFAC (EMission FACtors) emissions model; the rest of the US uses the EPA MOVES (Motor Vehicle Emission Simulator) model. High emitters occur as a result of breakage, mal-maintenance (performance modifications, rechipping, and/or after-treatment removal), and at end of a vehicle’s useful life.

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