Iveco cursor
Cursor denotes the latest generation of Iveco engines for heavy trucks , tractors, generators, boats and other applications. Iveco covers the power range from 220 to 420 kW with the cursor.
The Cursor series was completely redesigned in the 1990s. In 1998 the first cursor appeared in the Iveco EuroStar and EuroTech models . Since then it has been used in the Stralis , Strator and Trakker as well as in various industrial and marine applications.
construction
- The six cylinders are in line. The crankcase is divided horizontally at the level of the crankshaft.
- The cylinder head goes over all cylinders.
- The camshaft is located on the side of the cylinder head. It is driven by gearwheels located at the back between the sixth cylinder and the flywheel, and acts on the valves via roller rocker arms.
- Each cylinder is supplied by four valves, two of which are actuated by a cam via a bridge.
- In the middle between the valves there is a pump-nozzle unit (PDE) , which is also operated via a roller rocker arm and injects directly into a recess in the piston.
- For the Iveco Turbobrake (decompression engine brake), the rocker arms of the exhaust valves are eccentrically mounted and can be moved by oil pressure. As a result, the exhaust valve opens briefly at the end of the compression stroke and releases the compressed air into the exhaust.
- The control unit sits on the side of the engine and is cooled with fuel.
- Depending on the power level, the turbocharger is equipped with adjustable turbine guide vanes ( VTG ).
Cursor 8, 10, 12
The designation of the engines results from the cubic capacity rounded to the nearest full liter: the Cursor 8 engines have 7.8 liters, the Cursor 10 engines 10.3 liters and the Cursor 12 engines 11.8 liters. The performance of the individual motors differs depending on the intended use and can only be roughly specified due to the large number of different variants. It is between 220 kW (300 PS) for the weakest Cursor 8 engine and 420 kW (570 PS) for the most powerful Cursor 13 engine.
Cursor 9, 11 and 13
The cursors 9, 11 and 13 have common rail injection instead of a pump nozzle. Like the pre-feed pump, the high-pressure pump is driven by gears.
Emission standards
The Cursor engines originally met the Euro 3 emissions standard . Thanks to a number of modifications, Iveco was one of the first manufacturers to offer engines that met the Euro 4 and Euro 5 emissions standards. The exhaust gas is processed with selective catalytic reduction (SCR) . Only minor changes were required to the engine itself, which at the same time increased performance and reduced fuel consumption. An exhaust gas recirculation (EGR) could be dispensed with.
