Start Your Engines: JDPS Tier 4 Interim Generator Drive Power Ratings

More updates from the world of engine Tier emissions. In case you haven’t heard, Tier emission levels are a big deal, with Tier 4 Interim regulations begin in 2011 for most power categories and Tier 4 Final is phased in beginning in 2014. To help contractors make the transition to new engines, John Deere Power Systems (JDPS) announced the generator drive power ratings for its entire lineup of Interim Tier 4 diesel engines. The new power ratings are the latest addition to John Deere’s already extensive lineup of standby and prime gen-set engines that meet emissions regulations around the world.

The engine models and prime power ratings for the John Deere Interim Tier 4 lineup at 1,800 rpm include:
• PowerTech E 2.4L: 33 – 35 kVA (27 – 28 kWe)
• PowerTech M 4.5L: 56 kVA (45 kWe)
• PowerTech PWX 4.5L: 55 kVA – 75 kVA (44 kWe – 60 kWe)
• PowerTech PVX 4.5L: 91 kVA – 114 kVA (73 kWe – 91 kWe)
• PowerTech PVX 6.8L: 140 kVA – 168 kVA (112 kWe – 134 kWe)
• PowerTech PSX 6.8L: 203 – 228 kVA (162 – 182 kWe)
• PowerTech PVX 9.0L: 227 kVA (182 kWe)
• PowerTech PSX 9.0L: 256 kVA – 313 kVA (205 kWe – 250 kWe)
• PowerTech PSX 13.5L: 341 kVA – 455 kVA (273 kWe – 364 kWe)

For prime power applications, Interim Tier 4 emissions regulations begin Jan. 1, 2011, for 174 hp and above engines and require a 90 percent reduction in diesel particulate matter (PM) and a 50 percent reduction in nitrogen oxide (NOx) from previous Tier 3 requirements.

“We have built our gen-set engine lineup upon simple, fuel-efficient and field proven technologies that enable John Deere to help leading generator manufacturers meet increasingly stringent emissions regulations,” said Vincenzo Perrone, power generation business manager for JDPS. “Our lineup of John Deere Interim Tier 4 generator-drive 
engines also offers exceptional power density in a compact size, which provides customers with greater installation flexibility.”

For engines 75 hp and above, John Deere will start with its proven PowerTech Plus Tier 3 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 wastegate or variable geometry turbocharger depending upon the size of the engine.

Engines below 75 hp, which include the John Deere PowerTech M 2.4L and 4.5L engines, meet Interim Tier 4 emissions regulations without the use of cooled EGR or an exhaust filter. These engines feature a 2-valve cylinder head, a fixed geometry turbocharger, mechanical unit pump fuel system (2.4L) and mechanical rotary fuel system (4.5L).