V-type 4-stroke internal combustion engine with 20 cylinders

V-type 4-stroke internal combustion engine according to any of the preceding claims, wherein the V-angle is between 40° and 80°, more preferably between 50° and 70°, more preferably between 55° and 65°, most preferably at 60°.

V-type 4-stroke internal combustion engine according to any of the preceding claims, wherein the crank throws are arranged on the crank star with an angle of n*36°±5°, preferably of n*36°±3°, more preferably of n*36°±1°, wherein n is a different integer between 1 and 10 for each crank star.

V-type 4-stroke internal combustion engine according to any of the preceding claims, wherein the firing sequences have an angular firing distance for a firing of two cylinders of the same bank between 26° and 46°, preferably between 31° and 41°, most preferably at 36°,

• and/or wherein the firing sequences have, for the counter-clockwise direction of rotation, an angular firing distance for a firing of a cylinder of the A-bank followed by a firing of a cylinder of the B-bank of between 38° and 58°, preferably between 43° and 53°, most preferably at 48° and/or for a firing of a cylinder of the B-bank followed by a firing of a cylinder of the A-bank of between 14° and 34°, preferably between 19° and 29°, most preferably at 24°,
• and/or wherein the firing sequences have, for the clockwise direction of rotation, an angular firing distance for a firing of a cylinder of the B-bank followed by a firing of a cylinder of the A-bank of between 38° and 58°, preferably between 43° and 53°, most preferably at 48° and/or for a firing of a cylinder of the A-bank followed by a firing of a cylinder of the B-bank of between 14° and 34°, preferably between 19° and 29°, most preferably at 24°.

V-type 4-stroke internal combustion engine according to any of the preceding claims, wherein the crank shaft is made from a self-ageing, micro-alloyed steel,

• and/or comprising a torsional vibration damper, wherein the power dissipation of the torsional vibration damper is preferably below 6 per mil of the maximum engine power, more preferably below 5 per mil, more preferably below 3.5 per mil, more preferably below 2.5 per mil, most preferably below 2 per mil, and/or wherein the torsional vibration damper is a viscous damper, and/or wherein the torsional vibration damper is preferably arranged on the opposite side of the crankshaft from the flywheel.

V-type 4-stroke internal combustion engine according to any of the preceding claims, wherein the engine is a suction engine or has a charging system having one or several stages, and/or wherein all cylinders of one cylinder bank have a common intake manifold and/or a common exhaust manifold, wherein the exhaust manifolds are preferably arranged with respect to the V-angle on the inside and the intake manifolds are arranged with respect to the V-angle on the outside.

Machine comprising a V-type 4-stroke internal combustion engine according to any of the preceding claims, in particular stationary or mobile machine, in particular heavy duty and/or mining and/or earth moving and/or transport and/or cargo and/or load handling machine, and/or ship and/or train and/or military and/or fluid transport and/or gas and/or oil production and/or treatment machine and/or power generator, preferably excavator and/or an dumper truck.

Crank star for a V-type 4-stroke internal combustion engine according to any of the preceding claims.