Ecoboost Gasoline Direct Injection - Ford Escape 2013 Manual

2013

EcoBoost gasoline Direct Injection

• Direct injection is a key technology behind the
performance capability and efficiency of the
EcoBoost engines
• Fuel is injected directly into the combustion chamber
of each cylinder by solenoid-controlled high-pressure
injectors, compared to traditional fuel injection
where fuel is mixed with intake air prior to entering
the chamber
– Fuel is pumped from the tank at a normal pressure
of around 200 psi to the engine compartment
– A cam-driven high-pressure fuel pump increases
fuel pressure to around 2150 psi, depending on the
demands of the engine
• Direct-injection fuel injectors are located inside the
combustion chamber
• Each injector delivers a precise fuel spray into each
cylinder, allowing a higher compression ratio to
help improve engine performance and reduce
fuel consumption
• An electronic control system varies the timing and
intensity of the fuel delivery according to the engine's
operating conditions
• Precise control of the fuel provides the customer
increased protection against engine knock/
detonation to help allow for improved performance
and excellent transient response
10
Escape
Performance/Handling
Engine Technologies
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RE&T: 2013 Source Book
ENgINEERINg INSIgHT
ecoBoost Turbocharger
What It Is
• A turbocharger uses otherwise wasted energy from
the engine's exhaust to rotate a turbine wheel
How It Works
• The turbine wheel is coupled to a compressor that
pressurizes air coming into the engine — this is
called "boost" and allows the engine to breathe in
air as if it were larger in displacement since more
air is "forced" into the intake
• The more air an engine breathes, the more power
it generates
Key Benefits
• Compact design and low NVH (noise, vibration and
harshness) characteristics
• Drivers will feel an immediate response when they
step on the accelerator
• Broad, flat torque curve
• The turbocharger has been "right-sized" to
deliver the power of a V6 so there's more power off
the line, with the fuel efficiency of a four-cylinder
and that means fewer stops for gas
December 2011