Gulf Construction Online - John Deere unveils greener engines

Power Generation

The PowerTech M 4045T engine ... complying with Tier 3/Stage III A regulations.

John Deere unveils greener engines

01 September 2010

IN LINE with its commitment to environment protection, John Deere Power Systems (JDPS) has launched its new PowerTech Stage III A engines range, which is its latest addition to an already extensive line-up meeting the various emissions requirements around the globe.

The EU’s stringent emission regulations, known as Stage III A, come into force from January 1, 2011 for 130 kW (174 hp) and above engines and require a 90 per cent reduction in diesel particulate matter (PM) and a 50 per cent reduction in nitrogen oxides (NOx) from previous Tier 3/Stage III A requirements. The Interim Tier 4/Stage III B regulation for 56 kW (75 hp) to 130 kW (174 hp) engines is effective from January 1, 2012.
From 2.9-litre to 9-litre, 30 to 300 kVA, JDPS’ new Stage III A engines are ideally placed for mobile generator applications, according to says Martin Ryley, marketing manager for JDPS in Saran, France.
“John Deere engines are recognised for their exceptional power density, which results in smaller canopies and less weight on the trailer and on the road. We listened to customers’ requests for specific power ranges for European markets, and our new PowerTech Stage III A engines are the result,” says Ryley.
The company is one of the few engine manufacturers that doesn’t make gensets. “It makes us unbiased experts on this market. We work closely with the leading generator manufacturers in the world to deliver quick-starting, clean-running, and fuel-efficient gen-set power,” he adds.

The PVX_6090 ... Interim Tier 4/Stage III B engine featuring cooled EGR and VGT technologies.

Every output range is available as a bare engine or as a complete genset power unit (GSPU). These preconfigured units include a cooling system and filter kit for simple installation and integration into gen-set packages. Advanced electronic controls make it simple to switch between frequencies on John Deere engines. The engines operate in dual frequencies at 1,500 and 1,800 rpm and are optimised for 50 Hz at 1,500 rpm.
“The simplicity and convenience of John Deere engines extends to the gen-set owner. All service points are located on a single side for easy access and quick service. These new engines are also designed to minimise noise and vibration,” he says.
“John Deere is one of the few manufacturers that build engines exclusively for off-highway applications. This specialisation has given it unparalleled experience in developing and packaging generator drive engines that deliver performance, power density, fuel efficiency, reliability, emissions compliance, and easy installation,” he says.
Earlier this year, the company displayed its entire Interim Tier 4/Stage III B diesel engine line-up while announcing engine models and power ratings at the bauma 2010 construction equipment show in Munich, Germany.

The PSX_6068 ... Interim Tier 4/Stage III B engine.

For engines 56 kW (75 hp) and above, John Deere offers its 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 adds an exhaust filter for reducing PM (particulate matter). 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 below 130 kW (174 kW), will be available in 4.5-litre and 6.8-litre displacements and will be equipped with either a wastegate or variable geometry turbocharger depending upon the size of the engine.
Compared to the company’s larger engines, models below 130 kW (174 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 for active regeneration, while John Deere’s 130 kW (174 hp) and above engines use an external dosing system.
“John Deere was the first engine manufacturer to widely commercialise cooled EGR and variable geometry turbocharger (VGT) technologies in off-highway applications, introducing them in 2005 with the start of Tier 3/Stage III A regulations. Since then, John Deere has accumulated significant operating hours with these technologies in off-highway applications and has established a proven field record of reliability,” says John Piasecki, director of worldwide marketing, sales and customer support for JDPS.
“Our line-up 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,” he adds.

Stage III B range
With its 56 kW (75 hp) and above Interim Tier 4/Stage III B engines featuring cooled EGR and VGT technologies, John Deere expects to maintain fuel economy levels similar to those achieved with its Tier 3/Stage III A engines. John Deere’s 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.
“We achieved best-in-class fuel economy with many of our Tier 3/Stage III A engines. Other engine manufacturers are just now announcing the use of these technologies in their off-highway Interim Tier 4/Stage III B product offerings,” says Piasecki.
John Deere has optimised the package size for its Interim Tier 4/Stage III B engines. All John Deere’s engines with cooled EGR and an exhaust filter will require space similar to the Tier 3/Stage III A engine and muffler they replace.
“This full line-up of diesel engines is built upon simple, fuel-efficient and field-proven technologies enabling John Deere to meet increasingly stringent emissions regulations without sacrificing performance, dependability or operator convenience. And the company’s existing worldwide dealer network of over 4,000 service locations, with a recent addition of 80, is trained and prepared to fully support customers and their Interim Tier 4/Stage III B engines,” he adds.
John Deere Power Systems manufactures and markets 30 kW to 448 kW (40 hp to 600 hp) industrial diesel engines and 56 kW to 559 kW (75 hp to 750 hp) marine diesel engines, as well as drivetrain components for use in a variety of off-highway applications.