Chain Drive

Chain Drive

Another special feature of the new generation of engines is that these engines no longer have an intermediate shaft. This drive shaft, which was fitted between the crankshaft and the camshafts on previous models, was required in order to reduce the transmission ratio and thus the dynamic forces of the timing chains. Through the use of new, high-performance timing chains, it was possible to simplify the drive mechanism for the camshafts in spite of higher revs, thereby reducing the weight of the engine significantly by removing the intermediate shaft. Together with an additional crankshaft bearing location, this allows greater stability and a significantly higher engine speed potential.







Timing drive mechanism

The two timing chains are controlled by guide and tensioning rails. Two hydraulic chain tensioners connected to the engine oil circuit ensure the required tensioning of both chains.