A V-type 4-stroke internal combustion engine having 20 cylinders, having a counterclockwise or clockwise direction of rotation, comprising a crankshaft with a torsional vibration damper and a flywheel arranged on the crankshaft, wherein the crankshaft has crank throws forming a crank star, wherein in each case the piston rods of the two cylinders of a V-segment are connected to the same crank throw, wherein the crank throws C1 to C10 have one of the following angular sequences in the direction of rotation of the engine when seen from the side of the flywheel, with the crank throws numbered as C1 to C10 when starting from the side of the flywheel: (i) C1-C9-C4-C6-C3-C10-C2-C7-C5-C8, (ii) C1-C8-C5-C7-C2-C10-C3-C6-C4-C9, (iii) C1-C9-C5-C7-C3-C10-C2-C6-C4-C8, (iv) C1-C9-C7-C3-C6-C10-C2-C4-C8-C5, (v) C1-C7-C5-C8-C2-C10-C4-C6-C3-C9, (vi) C1-C9-C7-C3-C5-C10-C2-C4-C8-C6, (vii) C1-C6-C8-C4-C2-C10-C5-C3-C7-C9, (viii) C1-C5-C8-C4-C2-C10-C6-C3-C7-C9, (ix) C1-C8-C4-C6-C2-C10-C3-C7-C5-C9.

An air boost system for a two-cycle engine, such as an EMD engine, which operates with one or more roots blowers, or for similar engines that use gear-driven roots blowers or centrifugal blowers. At least one of the roots blowers is equipped with a variable transmission, which allows airflow into the engine to be varied in accordance with load or other engine operating conditions.

The present invention comprises a V-type 4-stroke internal combustion engine having (20) cylinders, having a counterclockwise or clockwise direction of rotation, comprising a crankshaft, a torsional vibration damper and a flywheel arranged on the crankshaft, wherein the crankshaft has (10) crank throws forming a crank star, wherein in each case the piston rods of the two cylinders of a V-segment are connected to the same crank throw, wherein the crank throws C1 to C10 have one of the following angular sequences in the direction of rotation of the engine when seen from the side of the flywheel, with the crank throws numbered as C1 to C10 when starting from the side of the flywheel: i) C1, C9, C4, C6, C3, C10, C2, C7, C5, C8 ii) C1, C8, C5, C7, C2, C10, C3, C6, C4, C9 iii) C1, C9, C5, C7, C3, C10, C2, C6, C4, C8 iv) C1, C9, C7, C3, C6, C10, C2, C4, C8, C5 v) C1, C7, C5, C8, C2, C10, C4, C6, C3, C9 vi) C1, C9, C7, C3, C5, C10, C2, C4, C8, C6 vii) C1, C6, C8, C4, C2, C10, C5, C3, C7, C9 viii) C1, C5, C8, C4, C2, C10, C6, C3, C7, C9 ix) C1, C8, C4, C6, C2, C10, C3, C7, C5, C9.

A method of regulating an internal combustion engine having a plurality of cylinders is provided, wherein each of the individual cylinders can be deactivated in accordance with a predeterminable pattern depending on a required power output, wherein the predeterminable pattern comprises a time sequence of commands for ignition and commands for skipping ignition, and wherein the predeterminable pattern is derived with a calculation specification in such a way that spacing between the individual cylinders intended for skipping in relation to a firing order is an odd number and is preferably in coprime relationship with the number of cylinders.

The present disclosure relates to a four-stroke reciprocating piston engine in a V configuration having 20 cylinders, having a counter-clockwise direction of rotation, having an ignition timing control which fires the cylinders A1 to A10 and B1 to B10 in at least one of the following firing sequences, wherein the direction of rotation and the cylinder numbering are defined in accordance with DIN ISO 1204: a) A1-B3-A4-B9-A8-B5-A2-B1-A5-B4-A10-B8-A7-B2-A3-B6-A9-B10-A6-B7 b) A1-B3-A4-B9-A8-B6-A2-B1-A5-B4-A10-B8-A7-B2-A3-B5-A9-B10-A6-B7 c) A1-B2-A5-B8-A9-B4-A3-B1-A7-B6-A10-B9-A6-B3-A2-B7-A8-B10-A4-B5 d) A1-B2-A5-B8-A9-B4-A3-B1-A7-B5-A10-B9-A6-B3-A2-B7-A8-B10-A4-B6 e) A1-B2-A6-B8-A9-B4-A3-B1-A7-B6-A10-B9-A5-B3-A2-B7-A8-B10-A4-B5 f) A1-B2-A6-B8-A9-B4-A3-B1-A7-B5-A10-B9-A5-B3-A2-B7-A8-B10-A4-B6 g) A1-B3-A4-B9-A8-B5-A2-B1-A6-B4-A10-B8-A7-B2-A3-B6-A9-B10-A5-B7 h) A1-B3-A4-B9-A8-B6-A2-B1-A6-B4-A10-B8-A7-B2-A3-B5-A9-B10-A5-B7 i) A1-B2-A4-B8-A2-B6-A8-B10-A6-B7-A10-B9-A7-B3-A9-B5-A3-B1-A5-B4 j) A1-B4-A3-B9-A7-B5-A2-B1-A5-B3-A10-B7-A8-B2-A4-B6-A9-B10-A6-B8 k) A1-B4-A3-B9-A7-B6-A2-B1-A5-B3-A10-B7-A8-B2-A4-B5-A9-B10-A6-B8 l

An air boost system for a two-cycle engine, such as an EMD engine, which operates with one or more roots blowers, or for similar engines that use gear-driven roots blowers or centrifugal blowers. At least one of the roots blowers is equipped with a variable transmission, which allows airflow into the engine to be varied in accordance with load or other engine operating conditions.

The present disclosure relates to a four-stroke reciprocating piston engine in a V configuration having 20 cylinders, having a counter-clockwise direction of rotation, having an ignition timing control which fires the cylinders A1 to A10 and B1 to B10 in at least one of the following firing sequences, wherein the direction of rotation and the cylinder numbering are defined in accordance with DIN ISO 1204: a) A1-B3-A4-B9-A8-B5-A2-B1-A5-B4-A10-B8-A7-B2-A3-B6-A9-B10-A6-B7 b) A1-B3-A4-B9-A8-B6-A2-B1-A5-B4-A10-B8-A7-B2-A3-B5-A9-B10-A6-B7 c) A1-B2-A5-B8-A9-B4-A3-B1-A7-B6-A10-B9-A6-B3-A2-B7-A8-B10-A4-B5 d) A1-B2-A5-B8-A9-B4-A3-B1-A7-B5-A10-B9-A6-B3-A2-B7-A8-B10-A4-B6 e) A1-B2-A6-B8-A9-B4-A3-B1-A7-B6-A10-B9-A5-B3-A2-B7-A8-B10-A4-B5 f) A1-B2-A6-B8-A9-B4-A3-B1-A7-B5-A10-B9-A5-B3-A2-B7-A8-B10-A4-B6 g) A1-B3-A4-B9-A8-B5-A2-B1-A6-B4-A10-B8-A7-B2-A3-B6-A9-B10-A5-B7 h) A1-B3-A4-B9-A8-B6-A2-B1-A6-B4-A10-B8-A7-B2-A3-B5-A9-B10-A5-B7 i) A1-B2-A4-B8-A2-B6-A8-B10-A6-B7-A10-B9-A7-B3-A9-B5-A3-B1-A5-B4 j) A1-B4-A3-B9-A7-B5-A2-B1-A5-B3-A10-B7-A8-B2-A4-B6-A9-B10-A6-B8 k) A1-B4-A3-B9-A7-B6-A2-B1-A5-B3-A10-B7-A8-B2-A4-B5-A9-B10-A6-B8 l