Deere tier IV new engines

[Eurodeere]

Found some info on the new John Deere engines to comply with the Tier IV legislation, interesting reading:

From Farm Industry News:

 

  www.fin.com/tierIVsolution/release

 

  John Deere announced today a major change in its plan to comply with  the imminent Tier IV diesel emission regulations: gas engines. Named  the “Advanced Power Series,†starting with the 2011 models all John  Deere tractors from the 8 series down will have the option of a  gasoline engine, spark plugs and all. But this isn’t the 4230 gas you  grew up hating. Deere says these motors have nothing in common with any  off-road gas engine you have ever seen:

 

  They are all direct-injected, just like many European sports cars.  Injecting fuel at 10,000 psi after the valves have closed improves fuel  economy 10%, they say.

 

  They use positive-displacement (ie. Roots-style) superchargers.  (Deere says turbo chargers were prototyped, but made too much heat.)

 

  Depending on tractor model, some are V-10 configured, with hints of  V-16’s to come for the 9 series. With IVT, a fast-spinning engine is no  longer a liability. More RPM = more power.

 

  They are air-cooled. Deere engineers were able to get power, clean  exhaust, and reliability without a cooling system that requires  maintenance; the cooling turbine is gear-driven off of the crankshaft.

 

  An added benefit: they will all be E-85 compatible.

 

  For more information go to:

  http://deere.com/tierIV/APS

[Simon]

What did you say the date was on this press release?!