Toyota's latest SUV, the new Fortuner, will be powered by a newly developed 2.8-litre direct-injection turbo-diesel engine that raises the bar for fuel efficiency, performance and quietness.
Designated 1GD, the 2755cm3 four-cylinder common-rail turbo-diesel engine employs a highly efficient fuel-injection system and intake/exhaust ports.
The engine is notable for its high torque at low revolutions and its maximum torque of 450Nm is available from 1600 to 2400rpm when driven through Toyota's new six-speed automatic transmission.
Fortuner will also be offered with a six-speed manual gearbox, available on higher grades with 'intelligent' technology that ensures smoother shifting by matching engine revs to transmission speed. The manual's peak torque is 420Nm.
Maximum power of 130kW is reached at 3400rpm while the power curve below 3000rpm supports low-to-mid-range performance.
Toyota's engineers developed the engine from the ground up to be lightweight with high combustion efficiency and low friction, resulting in excellent fuel efficiency.
These measures, along with the inclusion of a diesel particulate filter, have resulted in reduced emissions and compliance with Euro 5 emissions standards.
Fuel consumption on the official combined cycle is expected to be below 8 litres/100km for manual variants of the part-time 4x4 SUV.
The engine's port shape has been designed to maximise air flow into the cylinders. A newly developed combustion chamber shape and advanced control of fuel injection pressure are used to optimise the injection of fuel into the combustion chamber to achieve high thermal efficiency and reduced 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 harsh environments, while ensuring quiet operation and high thermal efficiency.
The engine features a compact high-efficiency variable geometry turbocharger produced in-house by Toyota. It has 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 engine speeds.
The use of silica-reinforced porous anodised aluminium (SiRPA) on the pistons ensures optimum heat management during combustion. SiRPA is a highly effective insulation and dissipation material that is easy to heat and cool.
Toyota will continue to position diesel engines as a key component of the Toyota engine line-up, based on the philosophy of providing the right vehicles for the right places at the right time.
The entire Toyota group is focused on developing cleaner and more competitive diesel engines across a wide range of vehicle types, taking into account the varying needs of people around the world.