The 7180 to 7980 SPFH engine horsepower ranges are:

John Deere engines have proven to be more fuel efficient than our competitors. These PowerTech Plus engines feature better torque and power characteristics than any other current engine on competitive self-propelled forage harvesters. This industry-leading power and fuel efficiency is made possible through the use of a sophisticated engine design that utilizes exhaust gas recirculation, a variable-geometry turbocharger, four-valve cylinder heads, and advanced cooling systems.

7080 Series SPFH are powered by John Deere PowerTech engines with serial turbo chargers (one standard fixed turbo and one variable-geometry turbo [VGT] in series) plus an exhaust filter meeting IT4 exhaust regulation standards by using diesel oxidation catalyst (DOC) as well as diesel particulate filter (DPF) in conjunction with the PowerTech configuration.

The 1100-L fuel tank is in base equipment on all 7080 SPFH.

In forage harvesting, the amount of fuel burned per ton of crop chopped, rather than fuel used per hour or day, is key when comparing fuel consumption. Larger-capacity machines burn more fuel per hour, due to the increased amount of crop chopped per hour.

• Engine horsepower ratings without taking the SPFH cooling package into consideration (ECE R120) are 380 PS at 1900 rpm and 355 PS at 2100 rpm.

The 7280, 7380, 7480, 7580, and 7780 SPFH use John Deere PowerTech 13.5-L engines.

Engine features are as follows:

• 7280 SPFH engine horsepower ratings without taking the SPFH cooling package into consideration (ECE R120) are 440 hp at 1900 rpm.
• 7380 SPFH engine horsepower ratings without taking the SPFH cooling package into consideration (ECE R120) are 485 hp at 1900 rpm.
• 7480 SPFH engine horsepower ratings without taking the SPFH cooling package into consideration (ECE R120) are 555 hp at 1900 rpm.
• 7580 and 7780 SPFH engine horsepower ratings without taking the SPFH cooling package into consideration (ECE R120) are 625 hp at 1900 rpm.
• Engine cylinder head features four valves per cylinder and a cross-flow design for more efficient airflow, improved fuel economy, and lower engine temperatures.
• Air-to-air aftercooling reduces intake temperatures and gives cooler combustion air; cooler oxygen means better combustion.
• Cam-in-head design with heavy-duty rocker arms is the most accurate method to control valve action and electronic injection.
• An electronic governor control minimizes fluctuation in engine speeds and offers improved cold-weather starting through its pilot two-phase fuel injection system. The electronic governor allows lower exhaust emissions and has a self-diagnostic feature.
• An engine control unit (ECU) to precisely control engine timing and fuel delivery. The ECU constantly receives input signals from:
  • Throttle position sensor
  • Coolant temperature sensor
  • Fuel temperature sensor
  • Manifold air temperature sensor
  • Manifold air-pressure sensor
  • Camshaft position sensor
  • Crankshaft position sensor
• Power bulge feature provides increased power. When the engine encounters an increased load and rpm begins to pull down, the electronic control system provides an increase in power to get through without slowing down or compromising other machine functions. The net result is increased productivity and more cost-effective power.
• Reduced engine maintenance:
  • Elimination of coolant filter-liquid additive
  • Elimination of the nozzle service-nozzles designed to last the life of the engine
  • One-time valve lash adjustments
  • One-time electronic unit injector (EUI) adjustment check
• For excellent economy and load response, two turbochargers in sequence (a standard fixed one and a VGT) are used on the 7280 to 7780 SPFH. The variable part of the turbo provides performance by electronically positioning exhaust airflow vanes. The external actuator has a mechanical linkage to move the vanes to the appropriate position.
• The 7080 Series 9.0-L and 13.5-L engines are U.S. Environmental Protection Agency (EPA) certified for IT4 emission requirements. The method John Deere has chosen to meet these requirements uses cooled exhaust gas recirculation (EGR). EGR is a proven technology used on heavy-duty highway truck engines. John Deere has taken that technology and developed it specifically for the off-highway 9.0-L and 13.5-L design. The overall result is performance and efficiency that are unmatched.

The 7980 SPFH uses the Cummins® QSK19 (19-L [1159-cu in.] displacement) engine.

• 7980 SPFH engine horsepower ratings without taking the SPFH cooling package into consideration (ECE R120) are 800 hp at 1900 rpm
• Totally integrated electronics link engine and equipment performance
• Full electronic control of fuel delivery system
• Fully serviceable by John Deere dealers with training

Cummins is a U.S.-registered trademark of Cummins Incorporated.