The cylinder block is made of cast iron, the cylinder head and coolant pump housing are made of aluminum alloy. The forged steel crankshaft is supported by five bearings.
The piston is cast from a special aluminum alloy and is connected to the connecting rod by a floating piston pin. The piston rings are cast iron. The first ring has a barrel-shaped outer surface and internal chamfers, the second ring has a conical outer surface with an undercut. The oil scraper ring is composite, scraper type with a spring expander.
The cylinder head contains tent-type combustion chambers. The intake and exhaust valves are made of heat-resistant steel. The valves are driven by rocker arms. Hydraulic compensators are installed to automatically adjust the clearance in the valve drive.
The cast camshaft rests on five (inlet valve shaft) or six (exhaust valve shaft) bearings and is secured with caps. The camshafts are driven from the crankshaft by a toothed belt. The belt tension is adjusted by an automatic tensioner.
The engine is balanced by the second-order inertial forces by two additional shafts. The balancing shafts are located at the top left and bottom right (view from the timing belt side) and are driven by a toothed belt from the crankshaft, the belt tension is maintained by a special roller.
Table of engine characteristics.
