JD9P (6090HI550)

Industrial Diesel Engine

Features

Variable geometry turbocharger

Varies exhaust pressure based on load and speed to ensure proper EGR flow. The combination of the cooled EGR and VGT provide low-speed torque, quicker transient response, higher-peak torque, and world-class fuel economy.

Exhaust filters

These engines utilize a catalyzed exhaust filter that contains a diesel oxidation catalyst (DOC) and a diesel particulate filter (DPF). The DOC reacts with exhaust gases to reduce carbon monoxide, hydrocarbons, and some particulate matter (PM). The downstream DPF traps and holds the remaining PM. Trapped particles are oxidized within the DPF through a continuous cleaning process called passive regeneration. Passive regeneration occurs during normal operating conditions when heat from the exhaust stream, and catalysts within the exhaust filter, trigger the oxidation of the trapped PM. If passive regeneration cannot be achieved due to low temperature, load, or speed, then PM is removed using active regeneration — an automatic cleaning process controlled by the exhaust temperature management system.

Cooled exhaust gas recirculation (EGR)

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) to meet Stage V emission standards. 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.

Compact size

John Deere electronic engine controls

Faster engine control unit (ECU) manages both the engine and the exhaust filter
Premium software integrates with equipment or vehicles to reduce engineering and installation costs

Big-engine durability

Additional features

EPA Final Tier 4	-
EU Stage V	-

Model	6090HI550
Number of cylinders	6
Displacement-- L	9.0L
Engine Type	6-cylinder, In-line, 4-stroke, Water-cooled
Aspiration	Turbocharged and air-to-air aftercooled
Length - mm (in)	1282 (50)* *Engine length without fan drive
Width-- mm (in)	795 (31)
Height-- mm (in)	1208 (48)
Weight, dry - kg (lb)	1468 (3237)

DOC/DPF/SCR	Size 4