John Deere Power Systems (JDPS), Waterloo, Iowa, displayed their entire Interim Tier 4/Stage III B diesel engine lineup and announced engine models and power ratings at Bauma in Munich, Germany. Emissions regulations begin January 1, 2011 for 174 hp and above engines. The regulations require 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 75 hp to 174 hp engines is January 1, 2012. For engines 75 hp and above, JDPS will start with their proven PowerTech™ Plus Tier 3/Stage III A in-line, four- and six-cylinder engine platform — which includes cooled exhaust gas recirculation (EGR) for NOx control — and add an exhaust filter for reducing PM.
These engines will 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 75 hp and 173 hp will be available in 4.5L and 6.8L displacements and will be equipped with either a waste gate, or variable geometry turbocharger, depending upon the size of the engine.
Compared to JDPS’ larger engines, models between 75 hp and 173 hp 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 JDPS’ 174 hp and above engines use an external dosing system. Engine models 174 hp and above include the 6.8L, 9.0L and 13.5L displacements.
Engine models and ratings include PowerTech PWX 4.5L: 75 hp – 122 hp; PVX 4.5L: 125 hp – 173 hp; PVX 6.8L: 140 hp – 173 hp; PVX 6.8L: 185 hp – 250 hp; PSX 6.8L: 225 hp – 300 hp; PVX 9.0L: 250 hp – 300 hp; PSX 9.0L: 325 hp – 425 hp; and PSX 13.5L: 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.
Engines below 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. PowerTech 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). PowerTech 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 PowerTech M 2.4L: 49 hp; E 2.4L: 60 hp – 66 hp; and M 4.5L: 74 hp.
John Deere’s full lineup of Interim Tier 4/Stage III B diesel engines is built upon simple, fuel-efficient and field-proven technologies enabling the manufacturer to meet increasingly stringent emissions regulations without sacrificing performance, reliability, durability or operator convenience. And John Deere’s worldwide dealer network of over 4,000 service locations is trained and prepared to fully support customers and their Interim Tier 4/Stage III B engines.