The drive line

The Cursor 8 and 13 engines

The fact that Iveco did not opt for the Cursor 10 engine, the best-selling model on its road range, may surprise some people. This choice, which reiterates the decision taken in 2000 for the EuroTrakker, was supported by users and is perfectly consistent with the spirit of the two types of use. The Cursor 13 is kept for the most demanding working conditions, where its extraordinary hill starting ability are a guarantee of a long clutch life. There are three power deliveries: 380 Hp, 440 Hp and 480 Hp. The 380 Hp variant is a version with a simple turbocompressor and adjustable turboboost pressure. One of the advantages of the Cursor 8 is its low weight (236 kg less than a Cursor 10) and makes up for its smaller capacity with a very wide field of use and greater gearing down of the transmission. The range includes three power deliveries: 270 Hp, 310 Hp and 352 Hp. The durability of the engine was highlighted in 1997/1998, during the pre-series tests on 44 tonne tractors used by public works companies, and it has been confirmed in the last four years on the EuroTrakker. Generally speaking, all the Cursor engines have undergone long test periods with customers before going on the market, to guarantee immediate reliability on the job.

Tried and tested technology

The technology of the two Cursor engines is identical and it has been proving its worth since 1998 on roads and building sites. Extremely high pressure direct injection is guaranteed by unitary injector pumps activated by a camshaft inside the cylinder block. This camshaft also controls the four valves of each cylinder and in turn is activated by a cascade of gears positioned behind the engine. On the 440 and 480 Hp Cursor 8 and 13, supercharging is provided by a variable geometry turbine, which is optimised to ensure that the engine supplies its best performance at all speeds. On the 380 Hp Cursor 13, supercharging is provided by a simple turbo, which is optimised to provide high torque at low speeds, with a waste-gate valve to adjust the turboboost pressure. The flow of exhaust gas is therefore extremely limited at high speed, to avoid a thermal overload of the cylinder heads and pistons. The action of the vacuum engine brake is reinforced by the turbocompressor. All the engine functions are controlled by the onboard electronics: injection capacity, injection advance, turbine geometry, vacuum brake, speed governor. The control unit that manages it is linked to the other electronic control units that govern the gearbox, the braking system and the retarder on the transmission. Exhaust emissions comply with the Euro 3 Directive. Iveco has succeeded in lowering the level of the polluting substances in question from 28% to 48% with respect to the Euro 2 Directive, without penalising the fuel economy on the vehicles.

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