|New Hilux pickup.|
At the upcoming British International Motor Show, Toyota will introduce a new range of diesel engines for the latest generation Toyota Hilux pickup truck.
New to the lineup is a high-torque 171 hp (126 kW) 3.0-liter D-4D diesel derived from the Toyota Land Cruiser and targeted at the leisure pick-up segment of the market. Toyota has also upgraded the current 2.5-liter D-4D diesel to develop 120 hp (88 kW)—an 8% increase—and to develop 325 Nm (240 lb-ft) of torque.
Both new engines comply with Euro IV emissions regulations and will be available to UK customers from January 2007.
The 3.0-liter D-4D develops 343Nm (253 lb-ft) of torque across a range from 1,400 to 3,250rpm, and offers a choice of transmissions: five-speed manual or four-speed automatic.
The engine uses second-generation, 1,600-bar common-rail technology, allowing the use of injector nozzles with smaller diameter holes to create a more homogeneous air-fuel mix, thereby improving the efficiency of the combustion process.
The improvements introduced to the combustion process mean the compression ratio can be lower, at 17.9:1, than in other, less advanced diesel engines. This results in less heat build-up in the piston bowl and a more efficient combustion process, therefore enabling more performance with lower emissions and less noise.
Toyota uses an electric DC motor to activate the variable nozzle vane mechanism of its turbocharger, rather than a conventional step motor. The result is sharper response from the turbocharger, particularly at lower speeds.
The engine also benefits from a Swirl Control System. Each cylinder is supplied with air/exhaust gas mixture through two different ducts. Butterfly valves operated by the Swirl Control System can shut off one of these ducts according to the engine speed and load, increasing the mixture’s swirl rate. At low engine speeds this device improves the air-fuel mixture, thus increasing torque availability at low speeds along with lower emissions.
Fuel consumption for the 3.0-liter Hilux ranges from 8.3 liters/100 km (28 mpg US) for the five-speed automatic and 9.4 liters/100 km (25 mpg US) for the four-speed automatic. CO2 emissions are 219 and 246 g/km, respectively.
The current Toyota Hilux, launched in Europe in late 2005, is the sixth generation of Toyota’s second-best selling model worldwide. More than 12 million units have been built since the Hilux was first introduced in Japan in 1967.
The Hilux is one of three vehicles being developed on a global basis under Toyota’s IMV (Innovative International Multi-purpose Vehicle) project. IMV products are truly global vehicles designed to sell in more than 140 countries and to meet modern customer demand for high levels of quality, durability and comfort. New Hilux cumulative production reached 558,223 units by the end of May 2006.