EGR cools and mixes measured amounts of cooled exhaust gas with incoming fresh air to lower peak combustion temperatures, thereby reducing Nox.
Selective catalytic reduction (SCR)
John Deere engines feature an SCR system that utilizes a urea-based additive, sometimes referred to as diesel exhaust fluid (DEF). A chemical reaction in the SCR catalyst converts urea and NOx emissions into nitrogen and water vapor.
High-pressure common-rail (HPCR)
The HPCR fuel system provides variable common-rail pressure and high injection pressures. It also controls fuel injection timing and provides precise control for the start, duration, and end of injection.
Air-to-air aftercooled
This is the most efficient method of cooling intake air to help reduce engine emissions while maintaining low-speed torque, transient response time, and peak torque. It enables an engine to meet emissions regulations with better fuel economy and the lowest installed costs.
4-valve cylinder head
The 4-valve cylinder head provides excellent airflow resulting in excellent low-speed torque and transient response.