Cylinder head Mechanical system General The cylinder head is made of high-strength aluminum. It is equipped with two camshafts and four valves per cylinder. The cylinder head cover is made of plastic with integrated ventilation. The cylinder head is char acterized by the following new features: The improved thermal management system is particu larly beneficial in those areas which are exposed to very high temperatures. The high ignition pressure of 200 bar is only made possible by targeted cooling of the individual components. The increased pressure potential and optimized injection quantity are respon sible for the high engine torque of 500 Nm and the engine output of 150 kW.
Maximum ignition pressure of 200 bar (previously 160 bar) Tangential and spiral intake ports Bore for piezo injector of 19 mm diameter The upper duct of the two-piece water jacket supplies the cylinder head with coolant. The advantages of the two-piece water jacket include: Greater structural rigidity Better heat dissipation Improved thermal management Cross-section of cylinder head 1 Ventilation 2 Main bearing bridge 3 Cylinder head cover 4 Glow plug 5 Exhaust valve 6 Piezo injector 7 Intake valve 8 Valve spring 9 Valve clearance compensation 13 Introduction of New Generation of 4-Cylinder Inline Engines, OM 651 q – This printout will not be recorded by the update service. Status:
09 / 2008 –