3.5L PowerBoost® Full Hybrid V6 Engine Overview

Aggressive Deceleration Fuel Shutoff (ADFSO)

Aggressive Deceleration Fuel Shutoff (ADFSO) deactivates the fuel injectors when the vehicle is decelerating or coasting while maintaining normal engine operation. This system promotes efficiency by reducing fuel consumption during these periods.

System Details:

• Automatic operation: The system functions without any input from the driver.
• Transmission interaction: Uses the transmission to keep the engine running at low operating levels whenever possible.
• Seamless transition: Normal fuel delivery resumes when the vehicle reaches a low speed or when the driver accelerates.
• Optimized drivability: Maintains excellent drivability through sophisticated software integration with powertrain operation.

EcoBoost Intercooler

The EcoBoost intercooler is included with all EcoBoost engines and the 3.5L PowerBoost Full Hybrid V6. The intercooler is designed to remove some of the heat generated by the action of the twin turbochargers compressing the incoming air charge before it enters the engine intake system.

System Details:

• Cooling principle: Located at the front of the vehicle within the airstream, allowing ambient air to flow over the outer plates and fins, cooling the charge air inside the intercooler.
• Heat exchange: Works on the same principle as the cooling system radiator, cooling warm air inside the intercooler with outside air passing over the fins and tubes.
• Performance enhancement: Generates a cooler, denser intake charge, increasing the engine's ability to produce torque and horsepower.

Port Fuel and Direct-Injection (PFDI) Fuel System

What PFDI Is and How It Works:

• Dual-delivery system: Combines port fuel injection (PFI) and gasoline direct-injection (GDI) into a single fuel system with two fuel injectors per cylinder.
• Injector locations: One injector delivers fuel into each intake port (port injection), and one is located inside the combustion chamber (direct injection) to deliver precise fuel spray.
• Balanced operation: These injectors work together to balance power output, efficiency, and emissions.
• Solenoid-controlled high-pressure injectors: Allow for a high engine compression ratio, enhancing performance.
• Electronic control system: Varies the timing and intensity of fuel delivery according to the engine's operating conditions.

PFDI in Action:

• Idle and low-power demands: The engine operates using PFI for efficiency and emissions, with GDI high-pressure fuel pump and injectors turned off for less noise.
• Increased power demands: The engine transitions from PFI to GDI operation as power demand increases.
• High-power demands: Uses GDI to increase output by precisely controlling the delivery of high-pressure fuel directly into the combustion chamber, while minimizing PFI usage.

Importance to F-150:

• Key technology: Behind the remarkable power and operating efficiency generated by the F-150 engine lineup.
• Torque curve: The combination of port fuel injection, direct-injection, and turbocharging allows EcoBoost engines to deliver a broad and flat torque curve, essential for towing or hauling heavy loads.

EcoBoost Twin Turbochargers

A turbocharger consists of an exhaust-gas-driven turbine and an air compressor. The turbine supplies the drive energy for the compressor, while the compressor pressurizes air going into an engine. The pressurized air creates “boost,” allowing a smaller engine to breathe as if it were a larger engine, thus generating more power.

System Details:

• Twin turbochargers: Use two smaller turbochargers to enable the engine to reach peak power faster than a single large turbocharger, providing quick torque delivery for passing or merging.
• Energy utilization: A turbocharger uses otherwise wasted energy from the engine's exhaust to rotate a turbine wheel.
• Peak boost: Twin turbochargers can provide peak boost sooner than a single, larger turbocharger.
• Efficiency and responsiveness: EcoBoost turbochargers work seamlessly with electrically activated wastegates and lightweight turbine wheels made of high-temperature super alloy Mar-M-247 developed by the aerospace industry.
• Applications: Found on the 2.7L and 3.5L EcoBoost and 3.5L PowerBoost Full Hybrid engines.

Twin Turbocharger Basics:

• Operational principle: Use the engine’s exhaust gases to spin two turbines, which drive two compressors to force more air into the engine, generating more power.
• Efficiency: Consumes very little power under light loads, allowing smaller engines to generate the power of larger displacement engines when extra power is needed.

Auto Start-Stop Technology

Auto Start-Stop Technology can help reduce fuel consumption and vehicle tailpipe emissions during city driving by switching off the engine when the vehicle comes to a stop. The engine will restart automatically when the brake pedal is released.

System Details:

• Instrument cluster indication: A symbol illuminates in the instrument cluster, indicating the system is operating.
• On-demand messaging: The instrument cluster features Start-Stop information.
• Continued functionality: The audio system and exterior lighting will continue to function as normal, with a slight decrease in speed for the climate control fan.
• Operational limits: Only occurs when the vehicle is in a forward gear and does not always turn off the engine at every stop (e.g., high air conditioning use, engine warm-up, extreme temperatures).
• Automatic restart: The engine restarts when the driver releases the brake pedal or under certain conditions to maintain comfort or recharge the battery.
• Driver control: The feature defaults to On at each start-up but can be deactivated via an On/Off button located above the center-stack screen.
• Compatibility: Does not interfere with the Remote Start System (if equipped) and automatically turns off when switching to Tow/Haul Mode or 4WD.
• Durability: Includes a durable starter and battery for increased number of engine starts and stops.

Intelligent Oil-Life Monitor

The Intelligent Oil-Life Monitor calculates oil change service intervals based on actual vehicle use, operating conditions, and time since the last oil service.

System Details:

• Service notifications: A message appears in the Information Display indicating when it’s time for an oil change.
• Remaining oil life indications: "CHANGE ENGINE OIL SOON" appears when engine oil life remaining is 10% or less; "ENGINE OIL CHANGE DUE" or "OIL CHANGE REQUIRED" appears when oil life reaches 0%.
• Service guidelines: The oil change should be performed within two weeks or 500 miles of the "ENGINE OIL CHANGE DUE" or "OIL CHANGE REQUIRED" message appearing.
• Accelerated intervals: Conditions such as towing, short-distance driving, extended idle duration, and driving in extreme temperatures can accelerate oil change intervals.
• Monitor reset: The Intelligent Oil-Life Monitor must be reset after each oil change.
• Warranty note: Failure to perform scheduled maintenance as specified in the Scheduled Maintenance Guide may invalidate warranty coverage on parts affected by lack of maintenance.

Fail-Safe Engine Cooling System

The Fail-Safe Engine Cooling System is designed to help protect the engine from potential damage due to the loss of coolant, allowing the driver to travel a short distance to obtain service or reach a service facility.

More Details:

• Operation mode: If the engine overheats, it switches from normal all-cylinder operation to alternating-cylinder operation.
• Cooling function: The non-powered cylinders act as air pumps to help cool the powered cylinders.
• Continued operation: The vehicle will continue to operate with limited engine power, and the air conditioning system will be disabled.
• Driving limits: Driving distance is limited by factors such as vehicle load, outside temperature, and road conditions.

Smart Charging Alternator

A smart charging alternator is a standard feature that controls charging system voltage during vehicle acceleration and deceleration, enhancing efficiency.

More Details:

• Charging process: An alternator provides charging via a pulley and belt operated by the engine, with more torque applied as more current is required.
• Efficiency optimization: Decreases alternator output during vehicle acceleration and increases output during braking or deceleration.
• Fuel savings: Reduces additional engine accessory belt load to energize the battery, resulting in less fuel consumption.
• System communication: Works with the Aggressive Deceleration Fuel Shutoff (ADFSO) system to ensure the battery is adequately charged.

Engine Durability

• Main bearing bulkhead widths and nodular iron cross-bolted main bearing caps: For extreme use.
• Deep-sump oil pan capacity of 10 quarts: With oil filter.