The D-4 GDI engine from Toyota is expected to be used in 5,000 vehicles per month starting in 2019, according to Toyota director Toshihiro Takahashi. According to Toyota, 1,800 cars with gasoline direct-injection engines have been sold up to October.
In This Article...
Does Toyota make engines with direct injection?
You can choose the level of power and efficiency you desire from two different engines. You get 203 horsepower from the 2.5-liter Dynamic Force in-line four-cylinder engine. A 3.5-liter V-6 engine upgrade will give you a powerful 301 horsepower.
Toyota’s D-4S direct injection system, which analyzes driving circumstances and chooses the best injection technique automatically, is used by both engines. Toyota’s advanced eight-speed automatic transmission is also mated to both engines. No matter which route you take, the end result is maximum strength and effectiveness.
With an intelligent Multi-Link rear suspension and an independent MacPherson strut front suspension from Toyota, you’ll have a smooth ride. The Camry can handle anything the road can throw at it and bends with confidence.
In order to customize your journey to your mood, you have three drive modes to choose from. For the ideal balance of power and fuel efficiency, choose Normal Mode. Choose Sport mode to accelerate more quickly. To take advantage of all the fuel efficiency the Camry has to offer, select ECO Mode.
Toyota started utilizing GDI when?
The percentage of new vehicles sold with GDI engines increased from 5 to 46% during model years 2009 and 2015. Here is a summary of the most relevant information.
- High-performance aircraft were where the 1902-WWIIGDI engines made their debut. These engines, developed by French engineer Leon Levavasseur, were famous in combat aircraft.
- 1955
- The first four-stroke GDI engine in manufacturing made its name with the Mercedes-Benz 300SL.
- Years later, less investment was made in pricey GDI technology due to considerations such “…deposit concerns, which could not be resolved at the time” (SAE Paper 1999-01-3690).
- 1996
- With the development of engine control module technology, GDI first entered the Japanese market with the Mitsubishi 1.8L inline four, then with their six-cylinder engine.
- 1996-2001
- Mitsubishi produced over a million GDI engines for numerous manufacturers and applied for a trademark for the abbreviation “GDI with an uppercase “I” in 2001.
- With the Leopard VQ30DD engine, I997Nissan debuted GDI.
- 1998
- With its D4 engines, Toyota introduced GDI to the Japanese market.
- In 1999, Renault unveiled the 2.0L GDI-powered Essence.
- 1999
- The GDI technology from Mitsubishi was licensed by Peugeot Citroen, Hyundai, and Volvo.
- 2000
- Engines with GDI technology were introduced by the Volkswagen Group under the names fuel stratified injection (FSI) and turbo fuel stratified injection (TFSI).
- D4 GDI engines were first offered by Toyota in 2001 for European markets.
- 2002 saw Alfa Romeo’s jet thrust stoichiometric (JTS) GDI engine debut.
- 2003
- The Ecotec spark ignition direct injection (SIDI) GDI engines from General Motors were unveiled.
- A straight-six GDI turbocharged engine was first offered by BMW in 2003.
- 2003 saw the debut of Honda’s Stream GDI engine, which is available in Japan.
- 2004
- Isuzu made GDI engines available as an option for the Rodeo and standard on the Axiom in US cars.
- 2005
- Direct injection spark ignition is the name given to Mazda’s new GDI Mazdaspeed3 in the US and European markets. Mazda debuted their own version of GDI in the Mazdaspeed6 and later in the CX-7 sport-utility (DISI).
- 2005
- A new V-6 3.5L D-4S Lexus GDI engine from Toyota was released in the US.
- The Lexus 2GR-FSE was rumored to have dual injection with GDI and PFI according to 2006SAE Paper 2006-01-1259.
- 2006
- The BMW 335i coupe was the first vehicle to include the N54 twin-turbo inline-six GDI engine. The 335i sedan, 535i, and 135i followed.
- 2006
- In the CLS 350 CGI, Mercedes-Benz debuted their charged gasoline injection (CGI) GDI system.
- 2006
- In their R8 GDI engine, Audi debuted the V8 fuel stratified injection (FSI) technology.
- In the 3.6L V6 LLT SIDI for the Holden Commodore SV6, Cadillac CTS, and STS, GM debuted GDI.
- 2007
- GDI was first used by BMW in the Mini Cooper.
- BMW unveiled the twin-turbo N63 V8 GDI engine in 2008.
- 2009
- For vehicles with customizations from Chrysler, Jeep, Dodge, Ram, Fiat, SRT, and Mopar, GDI is produced by Chrysler.
- 2009 saw the launch of Ferrari’s front-engine California with GDI and the 458 Italia for mid-rear engine configurations.
- 2009 saw the launch of Porsche’s GDI-powered 997 and Cayman models.
- The 2010 model year Jaguar Land Rover AJ-V8 Gen III 5.0L engine with GDI was launched in August 2009.
- 2010 saw the public debut of Ford’s EcoBoost GDI turbo technology.
- The Gen II block 2.4L Ecotec LAF GDI engine was released by GM in 2010.
- The 3.0L LF1 SIDI engine and the 3.6L GDI engine from GM were debuted in 2010.
- Infiniti unveiled the M56 with GDI in 2010.
- In 2011, Ford unveiled the 3.5L V6 EcoBoost version of the F-150 pickup.
- Ford sold 1 million F-150 pickup trucks with Ecoboost engines between 2011 and 2016.
- With addition to a turbocharged 2.0L variant, Hyundai launched a 2.4L four-cylinder GDI engine in the 2011 Sonata.
- In 2012, GM made the 2.0L turbocharged Ecotec LTG and 2.5L Ecotec LCV available with GDI in a Gen III block.
- Acura RLX GDI V6 from Honda was released in 2013 and features GDI engine technology.
- In 2014, GM unveiled the LT1, a 6.2L V8 GDI engine featuring variable-displacement cylinder deactivation (unlike the LT1/LT4 engines from the 1990s).
- In 2014, Toyota overhauled all of its engine designs, including its GDI engines.
- An aluminum block inline-four GDI engine was first used in the 2014 Hyundai Accent.
- Audi, BMW, GM, Ford, Hyundai, Lexus, Mazda, Mini, Nissan, Porsche, VW, and other automakers use direct injection (GDI) as of 2015; supposedly, direct injection is being used in all recent gasoline engine development.
The thorn in the side of GDI identification is that it regularly occurs with improved and retired engines, and occasionally with sources from different manufacturers.
Another issue is that many OEMs do not label their GDI engines as such, probably due to unforeseen consequences of hurried to market products. Have you ever seen EcoBoosts labelled as GDI or TGDI even though Ford Ecoboost engines are all turbo-boosted GDIs?
However, GDI engines can be distinguished. Identify GDI by the high-pressure fuel pump, which is cam-driven and often visible on top, after removing the engine cover. (Fig. 2) Recognize GDI by the steel fuel line that runs from the noisy, high-pressure fuel pump to the injector rail when it is occasionally covered in an acoustic insulator cover (s).
Toyota switched to direct injection in what year?
Soon you might see a car with port fuel injection in addition to direct fuel injection. It can be a Ford, Toyota, or another brand. It can be perplexing since for a long time, direct fuel injection was promoted as being superior to port fuel injection. Some engineers found that both injection techniques may be employed on the same engine to maximize power and efficiency.
Over the past ten years, we have developed strategies for overcoming direct fuel injection’s drawbacks. Carbon stains on the intake valves immediately spring to mind. The second issue was the soot that was created at greater combustion pressures under conditions of high load and low speed. While not immediately apparent, it would progressively shorten the oil’s lifespan.
Port fuel injection did not have either of these problems, only direct injection did. Port fuel injection does not, however, always perform as well or generate as much power as direct fuel injection. Using both direct and port fuel injectors on the same engine has been the solution for certain OEMs.
Under certain circumstances, port fuel injection may produce better vaporization. However, when port fuel droplets contact the intake valve before entering the combustion chamber, they have a chance to lose suspension. Under some circumstances, direct fuel injection performs better at controlling fuel trims and cooling the combustion chamber. Direct injection, however, might result in soot production due to a lack of vaporization under specific engine speed and load conditions. Port fuel injection will sometimes produce more torque, such as during the initial throttle tip-in.
In 2008, Toyota was one of the first automakers to use port and direct fuel injection on certain of its eight-cylinder Lexus V8 engines. Audi, Ford, and Toyota have all released engines with port and direct fuel injection in the last three years. These are standard engines that sell in the millions; they are not limited production engines.
Ford
Both the direct fuel injection system and the port fuel injection system are utilized to provide gasoline to the engine on Ford engines manufactured in 2017 and later that have dual fuel injection systems. On four-cylinder, V6 and V8 engines, dual injector systems are common.
The direct fuel injection system is utilized to supply fuel to the engine when severe acceleration or increased engine loads are encountered. The port fuel injection system is used to supply fuel to the engine when it is idle or operating at low engine load.
It’s possible that neither fuel injection system is running simultaneously. If either fuel injection system is off, the PCM will disregard any inputs from sensors connected to the fuel system. Only when the port fuel injection system or direct fuel injection system is running may related fuel injector DTCs be set. To help isolate the fuel injector issues, either system may be activated using a scan tool.
Toyota
Toyota refers to this system as the D-4S or Dynamic Force Engine (the “S” stands for superior), and the Lexus GS SUV with the V8 was the first to use it. The V6 engines from the early to late 2000s used a “cold start” or “dousing injector system,” but the D-4S system does not.
Like any other direct fuel injection system, the direct fuel injectors are identical. Additionally, the port fuel injectors function to supply fuel to the engine; they are not intended to clean the intake valves. Together, both sets of injectors create the ideal fuel-air mixture inside the cylinder.
However, both direct fuel injection and port fuel injection methods have benefits and drawbacks.
Toyota employs a hybrid strategy that combines port and direct fuel injection to provide the optimum performance, emissions, and efficiency. Because it depends on a number of factors, including the throttle position, load, engine speed, and even engine temperature, it is challenging to determine whether the port, direct, or both injectors are in operation.
The D-4S injection system is being installed in more and more engines. In 2007, it began with the Lexus GS vehicles. The Toyota/Scion FR-S F86 got the D-4S in 2012. The D-4S systems were also made available for the Highlander and Tacoma in 2015. The 2017 Camry’s four-cylinder engine is the most recent vehicle to receive it. You can identify one of these engines the easiest by keeping an eye out for port fuel injectors and a high-pressure fuel pump.
Toyota claims that to provide homogeneous mixed air and fuel under low-to-medium engine loads, either direct-type and port-type fuel injection are utilized combined, or one of them is used. This helps to maintain stable combustion processes.
Only direct-type fuel injection is used to cool the intake air during high engine load ranges due to the chilling action of fuel vapors that are pumped into the cylinder, boosting charge efficiency and anti-knock qualities. When this happens, fuel is injected during the first half of the intake stroke as the intake valves open to let the homogenous air/fuel mixture enter the combustion chamber.
The system coordinates the port and direct fuel injector openings during a cold start to reduce emissions and produce stratified combustion. Fuel is injected from the fuel injector assembly into the intake port just after a cold engine start and during the exhaust stroke (for port injection). Near the end of the compression stroke, fuel is also injected directly from the fuel injector. As a result, the air-fuel mixture becomes stratified, with the region closest to the spark plug being richer than the remainder. This procedure enables the employment of a delayed ignition time, increasing the temperature of the exhaust gas. The performance of the catalysts is improved by the increased exhaust gas temperatures, which also encourage quick catalyst warming.
Where the switch from port to direct injection happens cannot be determined. A scan tool is the sole way to see the various fuel injection activities. Based on the condition of the vehicle, the signals from various sensors, and other output signals, the ECM operates the fuel pump and determines the low-pressure fuel requirement. The fuel pump control ECU uses three-phase Pulse Width Modulation (PWM) control.
To supply fuel pressure to the fuel rail for the port fuel injectors and the high-pressure fuel pump on the engine, both injector sets use the same fuel pump in the tank. While operating and for five minutes after the engine has been shut off, the pump should produce 51 to 73 psi. Both systems won’t operate if the pump is broken.
The high-pressure fuel pump has a 435 to 725 psi pressure range. There was a return line to the tank on the high-pressure side of the fuel system in the early D-4S Lexus V8 cars using this system.
For a returnless system and better EVAP emissions, later versions incorporate a spill valve and improved pump solenoid control. Pump discharge pressure is managed by a spill control valve. It is situated in the gasoline pump assembly’s input route. The amount of fuel to be compressed by the high-pressure pump is managed by the spill valve and solenoid. When the direct fuel injection system is not in use, it enables uncompressed gasoline to leak back into the low-pressure side of the system, enabling the system to control pressure. When the valve is open, the pump will be quieter since fuel is not being compressed. The typical ticking sound of the pump is minimized at specific idle settings.
The high-pressure fuel injector rail is constantly pushed upon by the force of a specific clamp used by direct-injection fuel injectors. As a result, when the engine is started with low fuel pressure and fuel pressure is provided to the fuel injector assembly, the fuel injector assembly cannot move. The clamp seals the system while reducing vibration and noise. When the fuel injection system is serviced, these clamps and the required fittings in the high-pressure side should be changed.
Manufacturers from outside and at home are implementing dual-injection systems. By combining the greatest features of both systems, the system prevents carbon accumulation on the intake valves. Look for these kinds of systems for more engine applications as the cost of the components falls.
How would double the injectors affect your shop, though? First off, increasing the number of injectors reduces the problems with carbon deposits and the demand for intrusive carbon cleaning treatments. The fuel pump in the tank will deliver fuel to the port and direct fuel injectors. Diagnostics will undergo the biggest adjustment. Healthy sensors and thoroughly cleaned fuel injectors are necessary for the technique of seamlessly switching between port and direct injectors.