PowerTech™ PWL 4.5L engines deliver efficiency, performance and simplicity for gen-set applications. The PowerTech PWL technology platform features a Wastegated Turbocharger and an Integrated Emissions Control system configured with cooled EGR, a DOC and SCR. This no-DPF solution reduces package size and cost.
Wastegated 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. Wastegated 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.
PowerTech PWL 4.5L engines for Final Tier 4/Stage IV produce near-zero levels of particulate matter (PM) without a filter thanks to an optimized combustion system and engine calibration. Remaining PM and other hydrocarbons are oxidized passively in a flow-through DOC without the need for regeneration.
The HPCR fuel system provides variable common-rail pressure, multiple injections, and higher injection pressures up to 2,500 bar (36,000 psi). It also controls fuel injection timing and provides precise control for the start, duration, and end of injection.
John Deere engines feature an SCR system that utilizes a urea-based additive, sometimes referred to as diesel exhaust fluid (DEF). The ammonia in the urea reacts with engine exhaust gases in the SCR catalyst to reduce NOx — converting it to nitrogen and water vapor.
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.
From the day your gen-set begins operation, it's warranted for uninterrupted service. We offer a 2-Year/2,000-Hour and 1-Year/Unlimited-Hour Warranty. In addition, extended warranties are available under certain conditions. Be sure to register your engine for warranty support at JohnDeere.com/enginewarranty.
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