Toyota has recently revealed their GD series engines and all their details. These newly developed turbo diesel engines definitely raise the standards for the other engines in fields of fuel efficiency, power and quietness.

These engines also happens to the very first diesel engines which uses the Thermo Swing Wall Insulation Technology (TSWIN) which also makes the 2.8 Litre 1GD-FTV unit one of the most thermally efficient engine and as a result of the improvement the diesel engine although is small in displacement if we compare it with the current KD engines but has an improved torque amount of 25 percent while the low speed torque amount also improved by almost 11 percent lastly the fuel efficiency has also improved by almost 11 percent.

Besides all the technical improvement the diesel engine is also eliminates almost 99 percent of emissions of NOx (nitrogen oxide) which happens to be one of the main causes of air pollution.

The GD series of engines will consists of two engines while the 2.4 Litre unit will be replacing the 2.5 Litre one the 2.8 Litre newly developed engine will be doing the same to the bigger 3.0 Litre unit. Talking about powers the bigger 2.7 Litre unit will be capable of producing about 177 ps of peak power at 3400 rpm and 450 Nm of torque in between 1600-2400 rpm. The smaller 2.4 Litre unit produces about 150 Ps of peak power at 3400 rpm and 400 Nm of torque in between 1600-2000 rpm.


Toyota Unveiled New Next Gen Turbo Diesel Engines, Will Power Upcoming Innova and Fortuner High Quality
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In simple words the new diesel engines from Toyota uses silica-reinforced porous anodized aluminum (SiRPA) on the pistons while as already mentioned above it also uses Thermo Swing Wall Insulation Technology so what they actually does is that it helps the engine to stay cool and all that was possible because of the use of SiRPA which is easy to heat as well easy to cool. While the new turbocharger is also smaller and comes with a newly developed turbine which helps improves efficiency


Toyota will most probably be using the same engines under the hood of their new generation Innova MUV and Fortuner SUV because the report also states that the current KD diesel engines will be replaced gradually with the new gen GD engines and it will be introduced in about 90 markets in 2016 and will expans to 160 markets by the year 2020.


Displacement 2,754 cc 2,393 cc
Bore/stroke ratio 92×103.6 mm 92×90 mm
Compression ratio 15.6 15.6
Maximum output 130 kw (177 PS)/3,400 rpm 110 kw (150 PS)/3,400 rpm
Maximum torque 450 N・m (45.9 kgf・m)/1,600-2,400 rpm 400 N・m (40.8 kgf・m)/1,600-2,000 rpm
Low speed torque 370 N・m (37.7 kgf・m)/1,200 rpm 330 N・m (33.7 kgf・m)/1,200 rpm
Riju Ganguly

Press Release

More Torque, Greater Efficiency and Lower Emissions

- * New engines feature next-generation advanced thermal insulation diesel combustion1
World-first2 use of Thermo Swing Wall Insulation Technology (TSWIN3)

- * Top-class maximum thermal efficiency of 44 percent4

- * 15 percent more fuel efficient; 25 percent more maximum torque

- * Eliminates up to 99 percent of NOx emissions

- * Production of 700,000 units a year; available in approx. 90 markets by the end of 2016

Toyota City, Japan, June 19, 2015―Toyota’s newly developed direct-injection turbo diesel engines raise the bar for fuel efficiency, power and quietness.

The world’s first use of Thermo Swing Wall Insulation Technology (TSWIN) makes the 2.8-liter 1GD-FTV engine one of the most thermally efficient in existence, with a maximum thermal efficiency of 44 percent. Despite smaller engine displacement in comparison to the current KD engine, maximum torque is improved by 25 percent and low speed torque improved by 11 percent, while fuel efficiency has received a 15 percent boost.

The engines also have Toyota’s first-ever urea Selective Catalytic Reduction (SCR)6 system that can eliminate up to 99 percent of emissions of NOx (nitrogen oxide), one of the main causes of air pollution.

The newly developed 1GD-FTV is currently available in the new Hilux small pickup truck launched in Thailand in May 2015, and in the partially redesigned Land Cruiser Prado launched in Japan on June 17. The same engine lineup includes the 2GD-FTV 2.4-liter direct-injection turbo diesel engine.

Features of the new GD engines
The new engines have proven their high thermal efficiency, quiet operation, and powerful performance around the world, including extremely cold areas where air temperatures can fall to -40˚C and altitudes exceeding 4,500 meters above sea level.

By adjacent positioning of the catalyst for cleaner performance and other improvements, catalyst size has been reduced by roughly 30 percent and number of exhaust system layouts reduced from 18 to just three, vastly simplifying the global deployment process and lessening the environmental burden.

Next-generation advanced thermal insulation diesel combustion
Thanks to the world-first use of Thermo Swing Wall Insulation Technology and the use of silica-reinforced porous anodized aluminum (SiRPA) on the pistons, cooling loss during combustion is reduced by approximately 30 percent. SiRPA is a high insulation and dissipation material that is easy to heat and easy to cool.

A port shape more conducive to air intake drastically increases the amount of air flow into the cylinders. Additionally, a newly developed piston combustion chamber shape and a common-rail fuel injection system that achieves higher pressure and more advanced control of fuel injection pressure are used to optimize the injection of fuel into the combustion chamber. This maximizes air consumption, enabling high thermal efficiency and low emissions.

Precise pilot injection matching the state of the ambient air occurs before the main injection to shorten ignition delay, achieving stable combustion even in the world’s harshest environments, while ensuring quiet operation and high thermal efficiency.

Compact high-efficiency variable geometry turbocharger (produced in-house by Toyota)
The new turbocharger used by the GD engines is 30 percent smaller than its current equivalent, and features a newly developed turbine that improves efficiency, and a newly developed impeller that provides instantaneous acceleration response and produces maximum torque over a wide range of RPM.

Toyota-first urea selective catalyst reduction (SCR) system
Use of Toyota’s proprietary, compact, high-dispersion urea selective catalyst reduction system eliminates up to 99 percent of emissions of NOx (nitrogen oxide), one of the main causes of air pollution. This will help vehicles conform to Euro 6 and the 2010 emissions standards set by Japan’s Ministry of Land, Infrastructure and Transport.

The current globally deployed KD engines will be gradually phased out and replaced with GD engines. By 2016, production will reach approximately 700,000 units a year with introduction in approximately 90 markets, set to expand to at least 150 markets by 2020.

Toyota will continue to position diesel engines as a key component of the Toyota engine lineup, based on the philosophy of providing the right vehicles for the right places at the right time. The entire Toyota group, including Toyota Industries Corporation, will combine its energies to develop cleaner and more competitive diesel engines across a wide-range of vehicle types, taking into account the varying needs of people around the world.

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