Crankshaft - Operation

OPERATION

The crankshaft transfers force generated by combustion within the cylinder bores to the flexibility. The crankshaft has six separate throws arranged at different angles (splayed) to reduce second order free movements of inertia. Following the injection order 1-4-2-5-3-6, the crankshaft throw angles alternate between 48� and 192�.


In the injection order, together with the splayed throws and the 72� V-block, produce injection intervals of 120� (even fire). After ignition TDC of cylinder number 1, the crankshaft turns 120� to reach TDC of cylinder number 4. The 120� angle (even fire) is the result of the 48� throw angle plus the 72� cylinder block angle.