Here's a challenge: Force the off-highway engine makers to build new engines that have lower emissions, but at the same time have a customer group that wants more power and would like better fuel economy. Deere has answered the challenge with its new 8030 series tractor line that premiers this week at the Farm Progress Show.
Deere's new 8030 series offers an enhanced hood line that improves visibility. But also note the great grill size and more evacuation area to the side. This allows for enhanced cooling of the new high-tech, efficient 9-liter PowerTech engine the powers the line.
There are 4 new machines in the line, all on the same frame (unlike the 20 series that came in two frame sizes). Each features a bump up in horsepower with the 8530 weighing in with 327 drawbar horsepower (255 at the power takeoff). "Farmers keep telling us they want more power," says John Lagemann, vice president of sales, Deere. "And we answered them."
At the same time, regulators are asking off-highway equipment makers to meet newer, tougher standards. In this case, the Tier III standards which go into effect for high-horsepower tractors on Jan. 1, 2006. Deere answers that with a new 9-liter engine that hits the Tier III emission targets and provides enhanced power. Not only that, Deere is the first company to go on record saying its new engines will burn less fuel. Other key players in the market say new emissions technology would cost more to power.
Deere has put a lot of work into optimizing these engines with several enhancements. Included is a variable geometry turbocharger - or VGT - with vanes that can actually be changed by computer control to make sure the exhaust gas recirculation stays at the right level now matter what the engine rpm. Cooled EGR is the way many engine makers are meeting emission standards, but Deere's approach appears to offer the most efficient approach.
But these new engines generate a lot more heat than their Tier II predecessors, so Deere engineers changed the way air moves around the engines. The air blows out and away from the tractor, and away from the operator, creating a higher air volume but at a lower speed. This provides superior cooling for the engine, according to Brian Arntson, from Deere's Waterloo works who demonstrated the new features to media at an event last week.
A key part of that cooling system is the Vari-Cool fan that relies on oil pressure to change fan operation. This design provides optimum cooling without pulling too much power off the engine. Says Ron Schwertner, who also works on tractors in Waterloo, this design allowed engineers to maintain good fuel economy with the machines. In fact, the engines alone offer a 2 to 3% boost in fuel economy over their predecessors at the engine alone. Combine that with new transmission options and controls and these machines could offer as much as an 8% fuel savings in some situations.
New to the 8030 series is the IVT transmission. The infinitely variable transmission, first rolled out to the 7020 series offers similar features and controls. The company will still offer the powershift transmission - or PST - as standard equipment.
There's a lot to see on these new machines, from the Cat. IV hitch (which can be converted to a Cat. III if needed (standard on the 8530) to enhanced cab sound control that defeats engine noise and offers an even quieter ride.
Learn more at www.johndeereag.com.