The engine
uses port injection for slower speeds and sedate driving, because it produces less noise and vibration, and switches to the more powerful direct injection when you're keeping the revs high and slamming through the corners.
The 2.5 - liter turbocharged Boxer engine is largely unchanged from the previous generation and still
uses port injection.
Lexus gets a lot of efficiency out of this engine by using variable - valve timing, on both intake and exhaust, along with a unique injection system that
uses port injection for low engine speeds and direct injection when the revs climb.
The engine might occasionally operate only
using port injection — as in cold starts, when it builds latent heat more quickly.
Lexus ekes power and efficiency from its V - 8 by
using both a port injection and direct - injection system.
Not exact matches
Chevy says the ZR1 is able to make its extra power thanks to the addition of a new, intercooled 2.65 - liter Eaton supercharger with 52 percent more displacement than the unit fitted to the Z06's mill, and the brand's first
use of a dual fuel direct
injection system with supplemental
port injection, helping deliver a more explosive mixture at full chat.
Even
using conventional
port fuel
injection, Honda's 3.5 L V - 6 beats most turbo - 4s by routinely delivering 28 mpg (8.4 L / 100 km) during our evaluations, same as it did last year, thanks in part to cylinder deactivation.
Under the Hood The 4.6 - liter V - 8 engine
uses direct fuel
injection along with traditional
port fuel
injection.
While injecting fuel into the combustion chamber requires approximately fifty times the pressure
used with
port injection and additional electronic control sophistication, significant benefits are delivered.
Variations of EFI
used in Ford vehicles include: Multi-
port Electronic Fuel
Injection (MEFI) Also known as «direct port» injection, MEFI uses individual port - mounted injectors to deliver fuel directly to the intake inlet for each
Injection (MEFI) Also known as «direct
port»
injection, MEFI uses individual port - mounted injectors to deliver fuel directly to the intake inlet for each
injection, MEFI
uses individual
port - mounted injectors to deliver fuel directly to the intake inlet for each cylinder.
Rated at 278 hp and 265 lb - ft of torque, it features direct and
port injection, variable valve timing with intelligent wider intake — which means it
uses the Atkinson cycle at cruising speed for better fuel efficiency and switches back to Otto - cycle when torque is necessary — and variable valve timing with intelligent exhaust.
SI engines can
use a carburetor or fuel
injection as
port injection or direct
injection.
A 12A - 6PI (for «six -
port induction»), 12A - turbo and 13B - RESI, with all
using electronic multiport fuel
injection.
The 86's engine, known by the Toyota code 4U - GSE and Subaru code FA20, is a naturally aspirated four - cylinder engine that
uses Subaru's horizontally opposed boxer engine design, with the addition of Toyota's D - 4S
injection system, which
uses both direct and
port fuel
injection.
The CAD images appear to show the engine utilizing both dual and
port fuel
injection like the Corvette ZR1's LT5, as well as two air intakes, with one side making
use of a turbo that is tucked down in the rear sides of the C8.
Beneath the 2019 Continental GT's longer, lower hood sits a familiar engine: Bentley's 6.0 - liter twin - turbocharged W12, which now
uses both direct and
port fuel
injection and boasts an impressive 626 horsepower and 664 pound - feet of torque.
The fuel system injects gas directly into the cylinders, which makes for a more efficient burn, while also
using standard
port injection, which delivers a quieter ride at lower RPMs.
Bentley's reworked 6.0 - liter W12
uses two turbochargers, direct and
port fuel
injection, and makes an impressive 626 horsepower and 664 pound - feet of torque.
Nissan Motor Co., Ltd. has developed a Dual Injector system designed to improve fuel efficiency in small - displacement gasoline engines
using port fuel
injection (PFI).
The new V6 engine is an Atkinson - Cycle engine that
uses both
port and direct fuel
injection for maximum efficiency, and the 2016 Toyota Tacoma will certainly be a contender for leading its class in fuel economy.
The new engine displaces just 4.2 liters, and
uses efficient direct -
injection rather than squirting fuel at the intake
ports.
It was installed with two valves per cylinder, and
used Mitsubishi's ECI - Multi multiple
port fuel
injection fuel delivery system.
* The answer: features like Ford - first
port fuel and direct
injection (PFDI) with two injectors per cylinder (one in the air intake
port, another inside the cylinder), plus upper block and cylinders made of the high - strength compacted graphite iron
used in the Super Duty ® 6.7 L Power Stroke ® Turbo Diesel.
A Chevrolet first, the new Dual Fuel
Injection system
uses a
port fuel rail and injectors, in addition to the Direct
Injection system, to provide supplemental fueling during extreme throttling.
To get those 755 horses, the LT5
uses GM's first dual fuel -
injection system, with both direct
injection and supplemental
port injection to get fuel into the cylinders.
Both
port and direct fuel
injection will be
used, and Infiniti lists a 27 percent improvement in fuel economy over their outgoing conventional - combustion V6.
For this generation, Lexus rides the economy trend, so dropped the former V8 in favor of a twin - turbocharged 3.5 - liter V6 engine in the LS 500,
using Lexus» unique fuel system that chooses between direct and
port injection for different driving circumstances.
Although
using the same 3.5 - liter V6 with combination direct and
port injection, it drops the twin turbochargers in favor of its complementary electric drive system, making for a total output of 354 horsepower.
While the V10 engine has the same 5.2 liter displacement as the one
used in the final Gallardo production models it has been in fact completely re-engineered to include both
port and direct
injection while emissions could be reduced by 11 % from the
use of a start - stop system combined with cylinder deactivation... just like we've seen on the MY2013 Aventador model.
We've already gone into detail about how this Subaru engine makes
use of a Toyota head that supposedly combines the best bits of
port and direct
injection tech.
It's reasonably quiet when idling, but Lexus probably could have
used sound - deadening materials rather than the extra
port injection system to achieve this result.
The Good The 2011 Lexus IS 350's engine
uses a dual - injector system, with direct
injection for efficiency and
port injection to reduce clatter.
Dual -
injection means the LT5
uses primary direct
injection as well as supplemental
port injection, to get 755 horsepower out of 6.2 liters with the help of that gigantic supercharger.
The 2011 Lexus IS 350's engine
uses a dual - injector system, with direct
injection for efficiency and
port injection to reduce clatter.
Dual - injector system A high point of the IS 350 remains its engine, a 3.5 - liter V - 6
using an innovative fuel delivery system combining direct
injection and
port injection.
Variable timing on its 32 valves along with a double - overhead cam contribute to its efficiency, but it
uses standard,
port injection, rather than the direct
injection system being adopted by many automakers.
The horizontally opposed 2.0 - litre boxer engine fitted on the 2012 Toyota FT - 86 will
use direct
injection technology combined with
port injection, and even though its output was not specified, the results promise increased horsepower without compromising fuel consumption and emission levels.
It looks like a fuel system which
used port fuel
injection of hydrocarbons and direct
injection of low alcohols would minimize the problem.
In low - load situations, the engine
uses only the
port fuel
injection as it is said to be more efficient.
The #gains come from a compression bump and a switch to a new 16 - injector fuel system that
uses a combination of
port and direct fuel
injection.
The opening and closing valves of these cylinders are blocked along with the
injection ports while not in
use.
Earlier versions of this engine also
used a single
port fuel
injection system Honda called PGM - CARB, signifying the carburetor was computer controlled.
At low speeds, the engine
uses its
port -
injection system, less efficient but quieter, while at higher acceleration it switches to the direct injectors, delivering more power.
The GT2 Corvette C6.Rs are running with a revised engine specification at Petit Le Mans with
port fuel
injection instead of the direct
injection used previously.
The RC F carries over the IS F sedan's 5.0 - liter V - 8 engine — internally known as the 2UR - GSE — and still
uses Toyota / Lexus» D - 4S direct
injection system with secondary
port injectors.
The 3.5 - liter V - 6 in the GS 350 is the same as what Lexus put in the IS 350, and
uses an interesting mix of
port and direct
injection.
But it's based on the same race - proven engine architecture serving Ford's IMSA Daytona Prototype endurance racing efforts and packed with tons of tech: highlights include variable cam timing, a low - friction roller - finger - follower valvetrain, a dual fuel
injection system
using both
port and direct injectors, and Ford - engineered pistons, rods, camshafts and twin turbochargers.