Furthermore, the crankshaft journals were made from aluminium and cast iron due to the high pressure applied on both side of the cylinder block.
The four valves per cylinder two intake and two exhaust were actuated by pivot-type roller rocker arms.
Initially, the turbocharger was positioned under the engine.
IHI turbocharger The EE20 engines have IHI turbochargers with variable nozzle turbines VNTs.
Furthermore, the intake ports and the diameter of the intake valves were designed to create a swirling effect for the air as it entered the combustion chamber.
The Euro 5 and Euro 6 EE20 engines had a closed-loop diesel particulate filter DPF ; both the oxidation catalyst and DPF were positioned next to the turbocharger to utilise the heat of the exhaust air.
The Euro 5 and Euro 6 EE20 engines are understood to have ceramic-type glow plugs.
The forged connecting rods had fracture split bearings for the crank end and an asymmetrical profile which increased precision during assembly.