Whats new in highway trucks

Aggregates & Roadbuilding reviews some recent developments in highway trucks.
Aggregates & Roadbuilding
February 25, 2010
By Aggregates & Roadbuilding
The Freightliner Coronado® SD (Severe Duty) is Freightliner’s flagship vocational truck. Available engines for the Coronado SD include Detroit Diesel DD13, DD15, and DD16, and the Cummins® ISX. All engine and exhaust systems use Selective Catalytic Reduction (SCR) emissions technology and are EPA 2010 compliant. Standard Features include 3,1m  BBC, Eaton Fuller 10-speed manual transmission and a 1.23 m2  radiator that can cool engines up to 600 hp with loads up to 72,595 kg GCW.  Options listed include a 1.1 m2 radiator, steer axles rated from 12,000 to 22,000 lbs and drive axles rated from 23,000 to 70,000 lbs, Freightliner AirLiner and TufTrac suspensions and a wide range of Eaton and Allison transmissions.

Kenworth Truck Company significantly expanded its product range in the vocational and municipal markets with the introduction of the Kenworth T470 model. The T470 is powered by a 9-litre Cummins ISL engine with 345 hp and 1,150 ft-lb of torque. Other features include a range of manual and automatic transmissions; and 5,445 kg to 9,989 kg rated front axles, 9,528 kg to 11,798 kg rated single rear axles, and 18,149 kg to 20,871 kg rated tandem rear axles. The fixed grille hood has a 1,283 mm bumper setting for convenient installation of a front engine PTO.  The hood allows for full extended frame rails for a heat-treated, 120,000 psi steel frame without the need for cutouts.  Halogen projector headlamps are standard equipment.

Peterbilt’s Model 367 is described as the ideal vocational truck for a variety of dump, mixer and construction applications. The Model 367 features a 3.12 m BBC, and is available in two axle configurations, as a day cab or with a Unibilt® sleeper. It is also available with REPTO and in a heavy haul configuration with a large, 1.08 m2 cooling system for tractor, oilfield and stationary applications. The sloped hood on the Model 367 enhances visibility and allows for a 0.93 m2 radiator to accommodate engines of up to 600 HP. The Model 367 can be specified with a variety of heavy duty components including full and partial frame liners, as well as a selection of axles including tandem, tridem and lift-axle options. This model is available in either a SFFA or a SBFA configuration.

Volvo Trucks North America’s D11 and D13 engines have been certified by the U.S. Environmental Protection Agency and the California Air Resources Board as meeting 2010 diesel emissions standards, the most stringent in the world.

Volvo is the first truck manufacturer to have its heavy-duty diesel engines certified for 2010 by both EPA and CARB.  These engines have been fully certified to meet EPA’s stringent standards without the use of emissions credits.

Volvo Trucks’ emissions technology for EPA2010 does more than cut emissions of nitrogen oxides (NOx) and particulate matter (PM) to near-zero levels.  Using selective catalytic reduction (SCR) to reduce NOx, Volvo improved fuel economy and reduced emissions of the greenhouse gas CO2.  SCR also helps eliminate active regenerations of the diesel particulate filter (DPF), which saves additional fuel.

All heavy-duty diesel truck engines produced after January 1, 2010 must meet the new standards.  Volvo has extensive experience with SCR technology, having accumulated eight million kilometres with 50 test vehicles in customer field test fleets in North America, as well as billions of kilometres of real-world experience with SCR in other markets.

A MACK® Granite™ diesel-electric hybrid tractor built by Mack Trucks, Inc, represents the latest generation of heavy-duty hybrid technology and meets the near-zero EPA2010 emissions regulations.

The Granite model diesel-electric hybrid powertrain features an integrated starter, alternator and electric motor.  The system captures energy from braking in the form of electricity, stores it in a 630-volt lithium-ion battery pack, and uses it to power the electric motor, which assists the MACK MP7 diesel engine with propulsion of the truck.

Mack’s hybrid technology demonstrates as much as a 30 per cent fuel economy improvement, depending on the truck’s application. The tractor powertrain also provides electrification, allowing it to operate as a mobile power station.  The battery is equipped with electrical outlets for computers, lighting or equipment with 110 volt, 220 volt and 3-phase current available.  The Granite tractor is also equipped with selective catalytic reduction (SCR) emissions control system to comply with the stringent EPA 2010 emissions limits for nitrogen oxides (NOx).  SCR also delivers improved fuel economy and lower operating costs.

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