John Deere Power Systems (JDPS), Waterloo, Iowa, will display five of its Interim Tier 4/Stage III B diesel engines at World of Concrete 2011, January 18- 21 in Las Vegas, Nev. Engines at the show will include the PowerTech PWX 4.5L, PVX 6.8L models above and below 130 kW (174 hp), the PSX 9.0L and the PSX 13.5L. A variety of Funk pump drives will also be displayed.
Emissions regulations began January 1, 2011, for 130 kW (174 hp) and above engines and required a 90-percent reduction in diesel particulate matter (PM) and a 50-percent reduction in nitrogen oxide (NOx) from previous Tier 3/Stage III A requirements. The Interim Tier 4/Stage III B regulation effective date for 56 kW (75 hp) to 130 kW (174 hp) engines is January 1, 2012.
For its Interim Tier 4 engines, JDPS started with its PowerTech Plus Tier 3/Stage III A in-line, 4- and 6-cylinder engine platform—which included cooled exhaust gas recirculation (EGR) for NOx control—and added an exhaust filter for reducing PM. The exhaust filter consists of a diesel oxidation catalyst and a diesel particulate filter.
These engines feature full-authority electronic controls, a four-valve cylinder head, a high-pressure fuel system, turbocharging, and an air-to-air aftercooling system. Engines between 56 kW (75 hp) and 129 kW (173 hp) will be available in 4.5L and 6.8L displacements and will be equipped with either a wastegate or variable geometry turbocharger depending upon the size of the engine. Compared to JDPS’ larger engines, these models will feature smaller exhaust filters that can be engine-mounted or remote-mounted for increased flexibility. Engines in this power range will use an in-cylinder dosing system, while their 130 kW (174 hp) and above engines use an external dosing system.
JDPS engine models 130 kW (174 hp) and above include the 6.8L, 9.0L and 13.5L displacements.
Engine models and ratings for JDPS’ full Interim Tier 4/Stage III B lineup include the PowerTech PWX 4.5L: 63 kW–91 kW (85 hp–122 hp); PVX 4.5L: 93 kW–129 kW (125 hp–173 hp); PVX 6.8L: 104 kW–129 kW (140 hp–173 hp); PVX 6.8L: 138 kW–187 kW (185 hp–250 hp); PSX 6.8L: 168 kW–224 kW (225 hp–300 hp); PVX 9.0L: 187 kW–224 kW (250 hp–300 hp); PSX 9.0L: 242 kW–317 kW (325 hp–425 hp); and PSX 13.5L: 298 kW–448 kW (400 hp–600 hp).
“Our lineup of Interim Tier 4/Stage III B engines will deliver the performance, reliability, durability and low operating costs our customers have come to expect from our engines,” said John Piasecki, director of worldwide marketing, sales and customer support for JDPS.
With their 56 kW (75 hp) and above Interim Tier 4/Stage III B engines featuring cooled EGR and VGT technologies, JDPS expects to maintain fuel-economy levels similar to those achieved with their Tier 3/Stage III A engines. The cooled EGR engines operate efficiently with ultra low-sulfur diesel as well as biodiesel blends, providing owners and operators with optimal performance and fuel-choice flexibility.
In choosing a solution for Interim Tier 4/Stage III B, JDPS elected not to use selective catalytic reduction (SCR). Their cooled EGR and exhaust filter approach provides OEMs and end-users a proven solution with the best total fluid economy. The single-fluid approach of cooled EGR means owners and operators won’t have to incur the cost of diesel fuel plus the additional cost for diesel exhaust fluid required by SCR systems. “For Interim Tier 4/Stage III B, we’re not only looking at fuel economy, we’re taking into consideration total fluid consumption,” said Piasecki.
The company has optimized the package size for their Interim Tier 4/Stage III B engines. All JDPS engines with cooled EGR and an exhaust filter will require space similar to the Tier 3/Stage III A engine and muffler they replace.
JDPS will display a variable-speed fan mounted on a PowerTech PVX 6.8L engine. The technology enables original equipment manufacturers to meet new not-to-exceed (NTE) emissions regulations associated with Interim Tier 4 while improving fuel economy and engine performance. These NTE limits, which began January 1, 2011, for 130 kW (174 hp) and above power ratings, require engines to stay within the emissions standard across the normal operating range of an engine. The NTE regulation effective date for 56 kW (75 hp) to 130 kW (174 hp) engines is January 1, 2012.
Engines below 56 kW (75 hp), which include the PowerTech E 2.4L and M 2.4L and 4.5L engines, meet Interim Tier 4 and Stage III A emissions regulations without the use of cooled EGR or an exhaust filter. The M 2.4L and 4.5L engines feature a two-valve cylinder head, a fixed-geometry turbocharger, mechanical unit pump fuel system (2.4L) and mechanical rotary fuel system (4.5L). The E 2.4L engines feature a similar two-valve cylinder head and a fixed geometry turbocharger, but add full-authority electronic engine controls, an electronic unit pump fuel system, and are air-to-air-aftercooled. Engine models and ratings in this power range include the PowerTech M 2.4L: 36 kW (49 hp); E 2.4L: 45 kW–49 kW (60 hp–66 hp); and M 4.5L: 55 kW (74 hp).
JDPS will also display pump drives from its Funk lineup. The display will feature the 28000 single- and double-pump drives designed for a maximum input torque of 1017 Nm (750 foot-pounds) and maximum input power of 268 kW (360 hp). Also displayed will be the 59000 triple- and four-pump drives, which deliver a maximum input torque of 1695 Nm (1250 foot-pounds) and maximum input power of 522 kW (700 hp). The Funk lineup offers more than 5,000 different configurations to meet countless equipment needs with quiet operation, performance and dependability.
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