Marine diesel engines are available with turbocharged (six-and eight-cylinder version) and aspirated (in the six-cylinder version) in several modifications. Depending on the purpose of diesel engines have design features. The lower part of the frame, which has a ship's engine 6h (n) 18/22 is a reservoir for oil collection. On the covers of three manholes frames engine from the exhaust manifold set pressure relief valves with flame-reflector, and on top of a diesel engine from a station – centrifugal oil cleaner. On the outer sides of the frame marine diesel engine for attachment to foundations are supporting legs. Diesel engine crankcase ventilation independent.
. The six-cylinder marine diesel 6h (n) 18/22 has seven main bearings. Bearing on the flywheel has increased due to the width of the action on the additional burden of a mass flywheel. Oil to each main bearing is supplied on an individual line, located in its upper part. Inserts main bearing engine made of a bimetallic strip. Bearing design ensures interchangeability diesel engine liners. Inserts can be extracted out of bed without pulling the crankshaft. The cylinder block marine diesel 6h (n) 18/22 cast, Cast iron has a plug-in sleeve cylinders.
To increase the rigidity cylinder block is made with side cavities, arranged symmetrically about the longitudinal axis (one of these cavities is used as a charge air receiver). Application of the charge air receiver built into the engine block, not only gives the design marine diesel 6h (n) 18/22 extra stiffness, but also improves the vibration and noise performance of diesel engines. The bottom side of the cylinder block camshaft bearings are available and guide bushings pushers valve train. In front of the cylinder diesel engine, the drive is camshaft, water, fuel pumps and the speed controller. Wet cylinder liner cast iron with an addition of nickel and chromium. Liner packing for persistent mound by lapping, while the lower zone of the installation – with four rubber rings, the upper of which is cavitation. Steel crankshaft, tselnokovanny. Each knee has an angled shaft hole, connecting the radial holes in the main and connecting rod shaft journal, intended to supply oil to the connecting rod to the upper neck and head of the connecting rod through a hole in it. At the front end of the crankshaft planted two gears to drive the auxiliary machinery diesel engine. Marine diesel 6h (H) 18/22 issued OAO Daldiesel 'until 2006. Commercially produced more than 50 years. Installed on ships of sea and river fleet.