Injection and combustion The Euro 4 and Euro 5 EE20 diesel engines had a Denso common-rail injection system with eight-hole, solenoid-type injectors that achieved an injection pressure of 180 MPa.
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.
It is understood that the maximum turbine speed for the IHI turbochargers used in the EE20 engine is 190,000 rpm.
For its Euro 4 and Euro 5 versions, the EE20 engine had a semi-closed block i.
The pistons had internal cooling channels, while oil jets in the crankcase sprayed the underside of the pistons.