Monday, May 21, 2012

John Deere Power Systems Putting Forth The Naming Convention

John Deere Power Systems (JDPS) has recently announced both the naming convention and the power ratings for the company’s Final Tier 4/Stage IV mobile off-highway diesel engine line-up.
Referring to previous tier terminology, John Deere Final Tier 4/Stage IV engine names will commence with the PowerTech™ brand and then add a three - letter suffix in order to specify the engine’s technology package. In case of Final Tier 4/Stage IV engine, the three letters are supposed to identify the mechanism’s technology platform, the turbocharger and aftertreatment. The exemplary name of John Deere Final Tier4/Stage IV engine would be PowerTech PSS 6.8L.
All John Deere Final Tier 4/Stage IV engines with power ratings 56 kW (75hp) and these have been designated “P” which indicates the Tier 3/Stage III A Power Plus technology platform, featuring 4-valve cylinder heads, full – authority electronic controls, cooled exhaust gas recirculation and air-to-air aftercooling. These engines utilize a variable geometry turbocharger, series turbochargers or a waste turbocharger ( designated “V”, “S” and “W” respectively). The afterteatment technology for engines 56 kW (75 hp) involves the exhaust filter and selective catalytic reduction, which gives the combination designated “S”.

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