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From page 3...
... 3 The researchers' review of clean truck strategies covered the following categories: • Engine and aftertreatment technologies – targeting criteria pollutants, • Engine and powertrain technologies – targeting fuel efficiency, • Alternative fuels, • Vehicle technologies – targeting fuel efficiency, • Operational strategies, and • Clean truck corridor infrastructure. The researchers completed a literature review that considered more than 50 documents covering more than 45 individual strategies.
From page 4...
... 4 Guide to Deploying Clean Truck Freight Strategies steel structure connected to the exhaust system muffler. DOCs have limited PM benefits and do not reduce NOx.
From page 5...
... Clean Truck Strategies 5 U.S.
From page 6...
... 6 Guide to Deploying Clean Truck Freight Strategies solely dependent on regenerative braking or the onboard engine for energy. PHEV technology is most suitable for Class 3 to Class 6 trucks in urban operation.
From page 7...
... Clean Truck Strategies 7 2.3 Alternative Fuels Besides electricity, a variety of liquid and gaseous fuels can replace conventional diesel or gasoline to power trucks (see Table 3)
From page 8...
... 8 Guide to Deploying Clean Truck Freight Strategies • LNG. Recent advances in tank storage capacity and fast-fill refueling technology for LNG have coupled with the surging supply of domestic natural gas to inject LNG as a serious option for long-haul trucking.
From page 9...
... Clean Truck Strategies 9 West Virginia University. In-Use Emissions Testing and Demonstration of Retrofit Technology for Control of On-Road Heavy-Duty Engines.
From page 10...
... 10 Guide to Deploying Clean Truck Freight Strategies • Tractor side fairings. Extend downward from the base of the cab between the wheels of the tractor, covering the open space and streamlining the fuel tank(s)
From page 11...
... Clean Truck Strategies 11 • Automatic tire inflation system. Monitors tire pressure relative to a preset target and re-inflates tires whenever the detected pressure is below the target level.
From page 12...
... 12 Guide to Deploying Clean Truck Freight Strategies • Central tire inflation system. Similar to automatic tire inflation systems, but the driver can select the target pressure from an in-cab display, thereby providing the driver the flexibility of increasing/decreasing tire inflation depending on the operating conditions of the vehicle.
From page 13...
... Clean Truck Strategies 13 CARB. Appendix E: Alternatives to Primary Engine Idling.
From page 14...
... 14 Guide to Deploying Clean Truck Freight Strategies optimization is constrained to some extent by truck route restrictions and weight limits for bridges. In addition to optimizing route plans, carriers can improve fuel efficiency by reducing vehicle miles driven that do not conform to planned routes.
From page 15...
... Clean Truck Strategies 15 • Truck-stop electrification (off-board technologies)
From page 16...
... 16 Guide to Deploying Clean Truck Freight Strategies Transportation Research Board, Board on Energy and Environmental Systems. Technologies and Approaches to Reducing Fuel Consumption of Medium- and Heavy-Duty Vehicles.
From page 17...
... Clean Truck Strategies 17 • Linear synchronous motors (in roadway)

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