PowerTech™ PWL FT4 technology
PowerTech™ PWS FT4 technology
Overview
All John Deere engines are designed and engineered specifically for agricultural applications. The engine powering 5 Series tractors is EPA certified Tier Level 4.
Benefits
- Efficient and cost-effective operation
- Allows for greater productivity and ease of operation
- Responsive power reducing the need to downshift the transmission
PowerTech EWL/EWR/EWX/PWL/PWS/PSS/PVS engine identification
NOTE: find a tractor’s 3 character engine identification by referencing the ‘engine description’ in specifications.
EWL
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Aftertreatment
- X – DOC and DPF
- S - Exhaust filter and SCR
- R – DOC and EGR
- L - DOC and SCR
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Turbocharger
- V - Variable geometry turbocharger (VGT)
- S - Series turbochargers
- W - Wastegate turbocharger
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Technology
- P - PowerTech Plus
- E - PowerTech E
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Several defining features on 5 Series tractors maximise the performance and reliability of the emissions package. A completely shielded DOC/DPF not only protects essential components from damage, it also keeps out dirt and debris. The well-packaged and tightly organized circulation system means there is more room to work around the tractor.
Key components of the emissions system
Shielded for protection
Diesel oxidation catalyst (DOC), diesel particulate filter (DPF), and cooled exhaust gas recirculation (EGR) Deere has chosen to utilise an exhaust filter (DOC) and/or diesel particulate filter (DPF) to reduce particulate material so the engine can operate at a level which produces less nitrogen oxide (NOx). With less NOx created, it requires less DEF to treat or no DEF for 3-cylinder models. The result is improved total fluid economy (diesel and DEF). Some applications also reduce NOx using cooled exhaust gas recirculation (EGR) that allows a controlled amount of exhaust gas to be returned to the engine leading to lower combustion temperature for a cleaner, more efficient exhaust.
The engine is programmed to aggressively respond to changes in power needs, which can temporarily increase particulate matter. Since the exhaust filter removes particulate matter instead of the engine, the engine is left free to do what it is designed to do – deliver all of the power, torque, plus transient response needed at the exact moment needed.
Wastegate Turbocharger
Wastegate turbochargers are designed to develop more airflow at lower engine speeds to improve low-speed torque. The wastegate control device bleeds off a portion of the exhaust flow at higher engine speeds. Wastegate turbos deliver improved transient response and higher peak torque without compromising engine envelope size. They also provide the lowest installed cost across a given power range.
For more information regarding EPA regulations and the technology behind John Deere Integrated Emissions Control systems, please visit the following link: http://www.deere.com/wps/dcom/en_US/campaigns/ag_turf/emissions/final_tier_4.page or https://www.deere.ca/en/engines-and-drivetrain/final-tier-4/