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4.5L PowerTech™

4045HF285

The John Deere 4045HF285 is built to provide reliable power for marine auxiliary systems and generator drive applications. Featuring a turbocharged and air-to-air aftercooled design, this 4.5L PowerTech™ engine delivers strong performance, excellent fuel efficiency, and dependable operation in demanding marine environments.

Advanced electronic engine controls and a high-pressure common rail fuel system optimize fuel delivery and engine performance while helping reduce emissions and operating costs. Its compact design, durable construction, and simplified serviceability make the 4045HF285 an excellent choice for commercial vessels, workboats, fishing fleets, and auxiliary power systems that require reliable performance day after day.

Features & Benefits

2-valve cylinder head

Cross flow head design that provides excellent breathing from a lower cost two-valve cylinder head

High-pressure common-rail (HPCR) and engine control unit (ECU)

The HPCR fuel system provides variable common-rail pressure, multiple injections, and higher injection pressures, up to 1600 bar (23,000 psi). It also controls fuel injection timing and provides precise control for the start, duration, and end of the injection.

Fixed geometry turbocharger

Fixed geometry turbochargers are sized for a specific power range and optimized to provide excellent performance across the entire torque curve. They are also designed to maximize fuel economy between the engine's rated speed and peak torque.

Air-to-air aftercooled

An 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.

Multiple injection strategy

The HPCR fuel system and engine control unit (ECU) allow for multiple fuel injections. The number of fuel injections, based on speed and load, help contribute to lower combustion temperatures, which reduce the formation of NOx and particulates. The multiple injection strategy also provides an added benefit of noise reduction.