DE102018117123A1 - Internal combustion engine and modular system for an internal combustion engine - Google Patents

Abstract

Internal combustion engine (10), namely gas engine or dual-fuel engine or liquid fuel engine, with a cylinder crankcase (11) in which a crankshaft is mounted; with at least one cylinder bank (12, 13) having a plurality of cylinders (14), each cylinder (14) having a cylinder head (15) with at least one inlet valve for charge air and with at least one outlet valve for exhaust gas; with a valve train comprising at least one camshaft for actuating the or each intake valve for charge air of the respective cylinder (14) and for actuating the or each exhaust valve for exhaust gas of the respective cylinder (14); with a fuel supply system (16) for supplying the cylinders (14) with fuel. The fuel supply system (16) of the internal combustion engine (10) is of modular construction, such that there is a fuel supply module (17) for each cylinder (14), the respective cylinder (14) via the respective fuel supply module (17) in the case of a Gas engines can be supplied exclusively with gaseous fuel and in the case of a dual-fuel engine both gaseous fuel and liquid fuel and in the case of a liquid fuel engine only liquid fuel can be supplied.

Description

The invention relates to an internal combustion engine. Furthermore, the invention relates to a modular system for an internal combustion engine.

The present invention relates in particular to the area of so-called large engines or large internal combustion engines, the cylinders of which have piston diameters of more than 140 mm, in particular of more than 175 mm. Such large-scale internal combustion engines are, for example, marine diesel internal combustion engines such as gas engines or dual-fuel engines or liquid fuel engines.

Up to now, large internal combustion engines have always been internal combustion engines individually designed for a defined purpose and requirements. If a large internal combustion engine is to be newly developed, all of its assemblies are usually subjected to a new development.

So far, a new development of a large internal combustion engine has not accessed existing components of existing large internal combustion engines in order to continue to use tried and tested components as far as possible. This is a disadvantage.

Proceeding from this, the object of the invention is to create a new type of internal combustion engine.

This object is achieved by an internal combustion engine according to claim 1.

The internal combustion engine according to the invention has a cylinder crankcase in which a crankshaft is mounted. The internal combustion engine according to the invention also has at least one cylinder bank having a plurality of cylinders, each cylinder having a cylinder head with at least one intake valve for charge air and with at least one exhaust valve for exhaust gas. The internal combustion engine according to the invention also has a valve train comprising at least one camshaft for actuating the or each intake valve for charge air of the respective cylinder and for actuating the or each exhaust valve for exhaust gas of the respective cylinder.

The internal combustion engine according to the invention furthermore has a fuel supply system for supplying the cylinders with fuel, the fuel supply system of the internal combustion engine being designed in a modular manner, such that a fuel supply module is provided for each cylinder, the respective cylinder being provided via the respective fuel supply module in the case of a gas Engine is exclusively gaseous fuel and in the case of a dual-fuel engine both gaseous fuel and liquid fuel and in the case of a liquid fuel engine only liquid fuel can be supplied.

When building or assembling an internal combustion engine, the fuel supply modules of the fuel supply system determine whether the internal combustion engine according to the invention is constructed as a gas engine or as a dual-fuel engine or as a liquid fuel engine. Many assemblies of the internal combustion engine according to the invention, in particular the cylinder crankcase, the cylinder banks and the valve train, are independent of the fuel supply modules used. In the case of a dual-fuel engine and a liquid fuel engine, at least one injector for the liquid fuel is kept ready in the area of the cylinder heads. In gas operation, this injector can also be used to supply ignition oil for the gas / charge air mixture.

The number of fuel supply modules used depends on the number of cylinders in the internal combustion engine. Due to the modular structure, it is not necessary to redevelop all components of an internal combustion engine when developing an internal combustion engine; rather, standardized, tested and already tested components can be accessed.

The respective fuel supply module has a mounting flange for mounting the fuel supply module on the internal combustion engine. In the case of an internal combustion engine designed as a gas engine and in the case of a dual-fuel engine, the respective fuel supply module also has a supply line for the gaseous fuel, a magnet-operated main gas valve and a supply lance for guiding the gaseous fuel in the direction of the respective cylinder, namely upstream of the or each intake valve for charge air of the respective cylinder. In the case of a gas engine, the respective fuel supply module also has a prechamber purge valve for guiding the gaseous fuel in the direction of a prechamber of the respective cylinder. In the case of a dual-fuel engine or liquid fuel engine, the respective fuel supply module also has at least one inlet for guiding the liquid fuel in the direction of at least one injector of the respective cylinder. The fuel supply module at least provides the mounting flange. Depending on whether the fuel supply module is designed as a fuel supply module for a gas engine or for a dual-fuel engine or for a liquid fuel engine, this includes Fuel supply module further assemblies. With such fuel supply modules, it is possible to build either a gas engine or a dual fuel engine or a liquid fuel engine with little effort using standardized components. In the case of a gas engine and a dual fuel engine, the fuel supply modules furthermore provide direct access to the respective main gas valve and the respective feed lance. After disassembly of the supply lance from the respective fuel supply module, the respective cylinder can be freely accessed without the need to completely disassemble the fuel supply module.

The internal combustion engine according to the invention also has tube modules which extend between adjacent fuel supply modules, the tube modules in a gas engine and a dual-fuel engine connecting the supply lines for the gaseous fuel of adjacent fuel supply modules to adjacent cylinders of a cylinder bank. In the case of a dual-fuel engine and liquid fuel engine, there are further pipe modules which extend between the adjacent fuel supply modules and connect the supply and return lines for cooling water and / or the rinse supply and return lines and the leakage returns of adjacent cylinders of a cylinder bank. The tube modules serve to couple the fuel supply modules installed in the area of a cylinder bank. The fuel supply modules installed in the area of a cylinder bank can be connected or coupled to one another via the tube modules. This allows a particularly simple construction of the internal combustion engine using standardized components.

According to an advantageous development of the invention, the internal combustion engine according to the invention has at least one carrier mounted on the cylinder crankcase, on which the fuel supply modules are mounted via the mounting flange. At least one carrier is preferably mounted on the cylinder crankcase for each cylinder bank. On the respective carrier are preferably not only the fuel supply modules but preferably also the cylinder heads of the respective cylinder and / or the at least one camshaft of the valve train of the respective cylinder and / or a cylinder liner of the respective cylinder and / or a charge air line and / or an exhaust line of the respective Cylinder stored. The storage of the fuel supply modules via a carrier mounted on the cylinder crankcase is particularly preferred. This eliminates the need for complex vibration decoupling for the fuel supply modules and pipe modules.

An inventive modular system of an internal combustion engine is defined in claim 14.

• 1 eine perspektivische Seitenansicht einer ersten erfindungsgemäßen, als Gas-Motor ausgebildeten Brennkraftmaschine;
• 2 ein Detail der Brennkraftmaschine der 1;
• 3 eine perspektivische Seitenansicht einer zweiten erfindungsgemäßen, als Dual-Fuel-Motor ausgebildeten Brennkraftmaschine;
• 4 ein Detail der Brennkraftmaschine der 3;
• 5 ein alternatives Detail zum Detail der 4;
• 6 eine perspektivische Seitenansicht einer dritten erfindungsgemäßen, als Flüssigkraftstoff-Motor ausgebildeten Brennkraftmaschine;
• 7 ein Detail der Brennkraftmaschine der 6;
• 8 ein alternatives Detail zum Detail der 7;
• 9 einen ausschnittweisen Querschnitt durch die Brennkraftmaschine der 1.

Preferred developments of the invention result from the subclaims and the following description. Exemplary embodiments of the invention are explained in more detail with reference to the drawing, without being restricted to this. It shows:

• 1 a side perspective view of a first internal combustion engine designed as a gas engine according to the invention;
• 2 a detail of the engine of the 1 ;
• 3 a perspective side view of a second internal combustion engine according to the invention, designed as a dual-fuel engine;
• 4 a detail of the engine of the 3 ;
• 5 an alternative detail to the detail of the 4 ;
• 6 a perspective side view of a third internal combustion engine according to the invention, designed as a liquid fuel engine;
• 7 a detail of the engine of the 6 ;
• 8th an alternative detail to the detail of the 7 ;
• 9 a partial cross section through the internal combustion engine of the 1 ,

The present invention relates to a modular internal combustion engine designed as a gas engine or as a dual-fuel engine or as a liquid fuel engine, in which a large number of components are used unchanged or with minimal adaptations in the sense of a modular system, regardless of the specific design of the internal combustion engine can be.

Furthermore, the invention relates to a modular system for such an internal combustion engine designed as a gas engine or as a dual-fuel engine or as a liquid fuel engine.

1 shows a perspective view of an internal combustion engine designed as a gas engine 10 , 2 and 9 show details of the internal combustion engine of the 1 , The internal combustion engine 10 the 1 has a cylinder crankcase 11 , in which an invisible crankshaft is mounted. The internal combustion engine 10 has two cylinder banks in the exemplary embodiment shown 12 . 13 each with several cylinders arranged in series 14 , From the cylinders 14 are in 9 cylinder heads 15 shown. In the embodiment shown are per cylinder bank 12 . 13 ten cylinders each 14 arranged in a row. The two cylinder banks 12 . 13 are positioned V-shaped to each other. 1 therefore shows a gas engine with twenty cylinders in V design.

Every cylinder 14 has an in 1 Invisible cylinder liner for an invisible piston of the respective cylinder 14 , with the piston of each cylinder 14 is connected to the crankshaft, which is also not visible, via an invisible connecting rod The cylinder head 15 of the respective cylinder 14 poses for each cylinder 14 at least one inlet valve each 27 (please refer 9 ) for charge air and at least one exhaust valve (not shown) for exhaust gas. The intake valves 27 for charge air and exhaust valves for exhaust gas are also referred to as gas exchange valves.

The internal combustion engine 10 still has an in 1 invisible valve train. Such a valve train comprises at least one camshaft, from which the intake valves start 27 for cylinder charge air 14 and the exhaust valves for exhaust gas from the cylinders 14 can be operated. So-called rocker arms typically cooperate with the respective camshaft in order to ultimately actuate the gas exchange valves of the respective cylinder via the respective camshaft and the respective rocker arm.

In the 1 shown and designed as a gas engine internal combustion engine 10 still has a fuel supply system 16 to supply the cylinders 14 with fuel. The fuel supply system 16 the internal combustion engine 10 is designed in a modular design, in such a way that for each cylinder 14 the internal combustion engine 10 one fuel supply module each 17 is available. At the in 1 V internal combustion engine shown with a total of twenty cylinders are twenty such fuel supply modules 17 available, namely ten fuel supply modules in the area of each cylinder bank 12 . 13 , each comprising ten cylinders.

At the in 1 shown, designed as a gas engine internal combustion engine 10 serve the fuel supply modules 17 the supply of the cylinders 14 only with a gaseous fuel.

The respective fuel supply module 17 includes a mounting flange 18 for storage or assembly of the respective fuel supply module 17 on the internal combustion engine, a supply line 19 for the gaseous fuel, a solenoid operated main gas valve 20 and a feed lance 21 , being over the feed lance 21 depending on the control of the main gas valve 20 the gaseous fuel can be supplied in the direction of a main chamber of the respective cylinder, preferably in such a way that the supply lance 21 the gaseous fuel depending on the control of the main gas valve 20 upstream of an intake valve 27 of the respective cylinder mixes with the charge air in order to create a charge air / gas mixture via the respective intake valve 27 of the respective cylinder 14 into the main chamber of the respective cylinder 14 contribute. 2 shows cables 22 that control the main gas valves 20 serve. After dismantling the feed lance 21 by pulling them out of the respective fuel supply module 17 can on the respective cylinder 14 eg freely accessible for maintenance purposes, without the need for the fuel supply module 17 to dismantle.

In the embodiment of the 1 . 2 and 9 , in the case of a gas engine, the respective fuel supply module 17 still a pre-chamber flush valve 23 on. Via the respective pre-chamber flush valve 23 can be gaseous fuel of a prechamber of the respective cylinder 14 be fed. That of the respective antechamber of the respective cylinder 14 via the pre-chamber flush valve 23 supplied gas is ignited in the area of the respective prechamber, so that the charge air / gas mixture in the main chamber of the respective cylinder is ultimately generated via the gas ignited in the prechamber 14 to ignite, which via the respective inlet valve 27 into the main chamber of the respective cylinder 14 arrives.

3 . 4 and 5 show details of an internal combustion engine designed as a dual-fuel engine 10 ' that differ from the internal combustion engine 10 the 1 and 2 through the execution of your fuel supply system 16 ' different. In the embodiment of the 3 . 4 and 5 the same reference numerals are used for the same modules as in the embodiment of 1 . 2 . 9 , For the same assemblies that have the same reference numbers, in order to avoid unnecessary repetitions, the explanations for the exemplary embodiment of FIG 1 . 2 and 9 directed.

The fuel supply system 16 ' of the dual-fuel engine 10 ' the 3 . 4 and 5 is again modular and includes one cylinder 14 one fuel supply module each 17 ' which, like the fuel supply modules 17 of the fuel supply system 16 the internal combustion engine the 1 and 2 the mounting flange 18 , the supply line 19 , the solenoid operated main gas valve 20 with the control cable 22 and the feed lance 21 having. The fuel supply modules 17 ' for the dual-fuel engine, however, do not have the prechamber purge valve 23 but rather via an inflow 24 , with the help of which liquid fuel an injector of the respective cylinder 14 can be supplied. In 4 is a single inflow 24 available for liquid fuel. In 5 is another influx 30 available for liquid fuel, namely for a pilot injector.

In the case of a dual-fuel engine, the respective fuel supply module 17 ' continue a lead 31 and rewind 32 for cooling water for cooling the injector of the respective cylinder, a leakage return 35 for the liquid fuel and a flushing flow 33 and flushing return 34 to flush the respective injector of the respective cylinder, in particular during or after a change from liquid fuel operation to gas fuel operation or before an engine stop.

Regardless of whether using the fuel supply modules 17 a gas engine 10 in the sense of the 1 . 2 . 9 or using the fuel supply modules 17 ' a dual fuel engine 10 ' in the sense of the 3 . 4 . 5 are built are tubular modules 25 present that are between adjacent fuel supply modules 17 respectively. 17 ' extend. About the pipe modules 25 are the supply lines 19 for the gaseous fuel of neighboring fuel supply modules 17 . 17 ' adjacent cylinder 14 of every cylinder bank 12 . 13 connectable with each other. So in the area of each cylinder bank 12 . 13 the fuel supply modules 17 respectively. 17 ' in the respective cylinder bank 12 . 13 cylinders positioned side by side or one behind the other 14 be coupled, so all cylinders 14 to supply with gaseous fuel.

In the embodiment of the 3 . 4 and 5 , i.e. when using the fuel supply modules 17 ' to provide a dual fuel engine 10 ' include the fuel supply modules 17 ' further tube modules 26 to the forwards and rewinds 31 and 32 for cooling water and the rinsing flow and return 33 and 34 and the leakage returns 35 the fuel supply modules 17 ' adjacent cylinder 14 of every cylinder bank 12 . 13 connect with each other.

When performing, for example, maintenance work on the cylinders 14 can the tube modules 25 . 26 stay mounted. To access a cylinder 14 it is sufficient to use the respective feed lance 21 by pulling out the respective fuel supply module 17 to remove.

6 . 7 and 8th show details of an internal combustion engine designed as a liquid fuel engine 10 " that differ from the internal combustion engine 10 the 1 and 2 through the execution of your fuel supply system 16 " different. In the embodiment of the 6 . 7 and 8th the same reference numerals are used for the same modules as in the embodiment of the 1 . 2 . 9 , For the same assemblies that have the same reference numbers, in order to avoid unnecessary repetition, reference is therefore made again to the explanations for the embodiment of FIG 1 . 2 and 9 directed. The fuel supply system 16 " of the liquid fuel engine 10 " the 6 . 7 and 8th is again modular and includes one cylinder 14 one fuel supply module each 17 " which, like the fuel supply modules 17 of the fuel supply system 16 the internal combustion engine the 1 and 2 the mounting flange 18 has, but not the supply line 19 , the solenoid operated main gas valve 20 with the control cable 22 and the feed lance 21 , The fuel supply modules 17 " for the liquid fuel engine 10 " also do not have the prechamber purge valve 23 , Rather, fuel supply modules 17 " for the liquid fuel engine 10 " just like the fuel supply modules 17 ' for the dual-fuel engine 10 ' the inflow 24 on, using the liquid fuel to an injector of the respective cylinder 14 can be supplied. This liquid fuel can e.g. B. diesel fuel or heavy oil or the like. In 7 is a single inflow 24 available for liquid fuel, namely for a main injector. In 8th is another influx 30 available for liquid fuel, namely for a pilot injector.

The fuel supply system 16 " of the liquid fuel engine 10 " only shows the tube modules 26 on the forward and rewind 31 and 32 for cooling water and the rinsing flow and return 33 and 34 and the leakage returns 35 the fuel supply modules 17 " adjacent cylinder 14 of every cylinder bank 12 . 13 to connect with each other, but not the tube modules 25 ,

According to an advantageous development of the invention, it is provided that the internal combustion engine 10 the 1 . 2 . 9 or the internal combustion engine 10 ' the 3 . 4 and 5 or the internal combustion engine 10 " the 6 . 7 and 8th at least one carrier each 28 (please refer 5 ) includes. Preferably in the area of each cylinder bank 12 . 13 such a carrier 28 present, that on the cylinder crankcase 11 is mounted. On this carrier 28 are then preferably the fuel supply modules 17 . 17 ' respectively. 17 " over their mounting flange 18 attached or stored. On this carrier 28 can, depending on the specific design of the internal combustion engine 10 . 10 ' respectively. 10 " also the cylinder heads 15 the cylinder 14 , the at least one camshaft, not shown, of the valve train, cylinder liners of the cylinders 14 and charge air lines 29 and exhaust pipes must be stored or installed. About the respective carrier 28 it is possible to use the fuel supply modules 17 . 17 ' respectively. 17 " to be insensitive to vibration. In this way, complex vibration decoupling measures can be dispensed with.

Interfaces of the fuel supply modules 17 respectively. 17 ' respectively. 17 " with each other and with each of the adjacent assemblies are uniform. Regardless of the number of cylinders in the internal combustion engine 10 . 10 ' respectively. 10 " come fuel supply modules 17 . 17 ' respectively. 17 " with uniform interfaces such as assembly flanges 18 , Supply lines 19 for the gaseous and / or liquid fuel. The fuel supply modules 17 for the gas engine and the fuel supply modules 17 ' for the dual-fuel engine and the fuel supply modules 17 " for the liquid fuel engine differ only slightly from each other in terms of further interfaces. So point the fuel supply modules 17 for the gas engine in particular the pre-chamber purge valves 23 on. The fuel supply modules 17 ' respectively. 17 " for the dual-fuel engine and the liquid fuel engine, in particular, the forward and reverse runs 31 . 32 for cooling water, the rinsing and leakage connections 33 . 34 . 35 and the inlets 24 . 30 for the liquid fuel.

LIST OF REFERENCE NUMBERS

10, 10 ', 10 "

Internal combustion engine

11

cylinder crankcase

12

cylinder bank

13

cylinder bank

14

cylinder

15

cylinder head

16, 16 ', 16 "

Fuel Supply System

17, 17 ', 17 "

Fuel supply module

18

mounting flange

19

supply line

20

Main gas valve

21

Zuführlanze

22

electric wire

23

Vorkammerspülventil

24

Intake

25

tube module

26

tube module

27

intake valve

28

carrier

29

Turbo pipe

30

Intake

31

Cooling water supply

32

Cooling water return

33

Spülvorlauf

34

Spülrücklauf

35

Leakage return

Claims (15)

Internal combustion engine, namely gas engine (10) or dual-fuel engine (10 ') or liquid fuel engine (10 "), with a cylinder crankcase (11) in which a crankshaft is mounted; with at least one cylinder bank (12, 13) having a plurality of cylinders (14), each cylinder (14) having a cylinder head (15) with at least one inlet valve (27) for charge air and with at least one outlet valve for exhaust gas; with a valve train comprising at least one camshaft for actuating the or each intake valve (27) for charge air of the respective cylinder (14) and for actuating the or each exhaust valve for exhaust gas of the respective cylinder (14); with a fuel supply system (16, 16 ', 16 ") for supplying the cylinders (14) with fuel; The fuel supply system (16, 16 ', 16 ") of the internal combustion engine (10) is of modular construction, such that there is a fuel supply module (17, 17', 17") for each cylinder (14), the respective cylinder (14) via the respective fuel supply module (17, 17 ', 17 ") in the case of a gas engine exclusively gaseous fuel and in the case of a dual fuel engine both gaseous fuel and liquid fuel and in the case of a liquid fuel -Motor can only be supplied with liquid fuel. Internal combustion engine after Claim 1 , characterized in that the respective fuel supply module (17, 17 ', 17 ") has a mounting flange (18) for mounting the fuel supply module (17, 17', 17") on the internal combustion engine. Internal combustion engine after Claim 2 , characterized in that in the case of an internal combustion engine designed as a gas engine (10) and in the case of an internal combustion engine designed as a dual-fuel engine (10 '), the respective fuel supply module (17, 17') also has a supply line (19) for the gaseous fuel , has a solenoid-operated main gas valve (20) and a feed lance (21) for guiding the gaseous fuel towards the respective cylinder (14), namely upstream of the or each inlet valve (27) for charge air of the respective cylinder (14). Internal combustion engine after Claim 2 or 3 , characterized in that in the case of an internal combustion engine designed as a gas engine (10), the respective fuel supply module (17) furthermore has a prechamber purge valve (23) for guiding the gaseous fuel in the direction of a prechamber of the respective cylinder (14). Internal combustion engine according to one of the Claims 2 to 4 , characterized in that in the case of an internal combustion engine designed as a dual-fuel engine (10 ') and in the case of an internal combustion engine designed as a liquid fuel engine (10 "), the respective fuel supply module (17', 17") continues to have at least one inlet (24, 30 ) for guiding the liquid fuel in the direction of at least one injector of the respective cylinder (14). Internal combustion engine after Claim 5 , characterized in that in the case of an internal combustion engine designed as a dual-fuel engine (10 ') and in the case of an internal combustion engine designed as a liquid fuel engine (10 "), the respective fuel supply module (17', 17") continues to have a supply line (31) for cooling water and has a return (32) for cooling water, the cooling water serving to cool the or each injector of the respective cylinder (14). Internal combustion engine after Claim 5 or 6 , characterized in that in the case of a dual-fuel engine (10 ') and liquid fuel engine (10 "), the respective fuel supply module (17', 17") furthermore a flushing flow (33), a flushing return (34) and a leakage return ( 35) for the injector of the respective cylinder (14). Internal combustion engine according to one of the Claims 2 to 7 , characterized by tubular modules (25, 26) which extend between adjacent fuel supply modules (17, 17 ', 17 "). Internal combustion engine according to one of the Claims 8 , characterized in that in the case of an internal combustion engine designed as a gas engine (10) and in the case of an internal combustion engine designed as a dual-fuel engine (10 '), the tube modules (25) supply lines (19) for the gaseous fuel of adjacent fuel supply modules (17, 17 ') connect adjacent cylinders (14) of a cylinder bank (12, 13) to each other. Internal combustion engine after Claim 8 or 9 , characterized in that in the case of an internal combustion engine designed as a dual-fuel engine (10 ') and in the case of an internal combustion engine designed as a liquid fuel engine (10 "), the tube modules (26) have the supply and return lines (31, 22) for cooling water and / or connect the rinsing flow and rinsing returns (33, 34) and the leakage returns (35) of adjacent cylinders (14) of a cylinder bank (12, 13). Internal combustion engine according to one of the Claims 2 to 10 , characterized by at least one support (28) mounted on the cylinder crankcase (11), on which the fuel supply modules (17, 17 ', 17 ") are mounted via the mounting flange (18). Internal combustion engine after Claim 11 , characterized in that at least one carrier (28) is mounted on the cylinder crankcase (11) for each cylinder bank (12, 13). Internal combustion engine after Claim 11 or 12 , characterized in that the cylinder heads (15) and / or at least one camshaft and / or a cylinder liner and / or a charge air line (29) and / or an exhaust line of the respective cylinder (14) are also mounted on the respective carrier (28) and / or is. Modular system for internal combustion engines designed as a gas engine (10) or as a dual-fuel engine (10 ') or as a liquid fuel engine (10 "), with cylinder crankcases (11) for internal combustion engines (10), the respective cylinder crankcase having at least one cylinder bank (12, 13) with a plurality of cylinders (14), a crankshaft being guided in the respective cylinder crankcase (11); with cylinder heads (15) for internal combustion engines (10), the respective cylinder head (15) for the respective cylinder (14) having at least one inlet valve (27) for charge air and at least one outlet valve for exhaust gas; with at least one camshaft valve drives for internal combustion engines (10), the respective valve train serving to actuate the at least one inlet valve (27) for charge air of the respective cylinder (14) and to actuate the at least one exhaust valve for exhaust gas of the respective cylinder (14); with fuel supply modules (17, 17 ', 17 ") for the cylinders (14) of internal combustion engines (10), the respective cylinder (14) being gaseous fuel and / or liquid fuel via the respective fuel supply module (17, 17', 17") is feedable. Modular system according to Claim 14 , characterized by features according to one or more of the Claims 1 to 13 ,

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