FI20195564A1

FI20195564A1 - Internal combustion engine and modular system for an internal combustion engine

Info

Publication number: FI20195564A1
Application number: FI20195564A
Authority: FI
Inventors: Matthias Söngen; Stefan Rehle
Original assignee: Man Energy Solutions Se
Priority date: 2018-07-16
Filing date: 2019-06-26
Publication date: 2020-01-17
Also published as: DE102018117123A1; KR102732623B1; KR20200008508A; JP7433790B2; CH715212B1; JP2020012465A; CH715212A2; CN110725753A; CN110725753B

Abstract

An internal combustion engine (10), namely gas engine or dual-fuel engine or liquid fuel engine, having a cylinder crankcase (11), in which a crankshaft is mounted; having at least one cylinder bank (12, 13) comprising multiple cylinders (14), wherein each cylinder (14) comprises a cylinder head (15) with at least one inlet valve for charge air and with at least one exhaust valve for exhaust gas; having a valve drive comprising at least one camshaft for actuating the or each inlet 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); having a fuel supply system (16) for supplying the cylinders (14) with fuel. The fuel supply system (16) of the internal combustion engine (10) is embodied in modular design in such a manner that for each cylinder (14) a fuel supply module (17) each is present, wherein the respective cylinder (14) via the respective fuel supply module (17) can be supplied in the case of a gas engine exclusively with gaseous fuel and in the case of a dual-fuel engine both with gaseous fuel and also liquid fuel and in the case of a liquid fuel engine exclusively with liquid fuel.

Description

INTERNAL COMBUSTION ENGINE AND MODULAR SYSTEM FOR AN INTERNAL COMBUSTION ENGINE

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

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

To date, large internal combustion engines are always internal combustion engines that are individually designed for a defined purpose and defined requirements. When a large internal combustion engine is to be newly developed, all assemblies of the same are generally subjected to a new development.

To date, existing components of already existing large internal combustion engines are not drawn on in order to continue utilising tested components unchanged as far as possible during a new development of a large internal combustion engine. This is disadvantageous.

Starting out from this, the invention is based on the object of creating a new type of internal combustion engine .

This object is solved through an internal combustion engine according to Claim 1.

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The internal combustion engine according to the invention comprises a cylinder crankcase in which a crankshaft is mounted. The internal combustion engine according to the invention, furthermore, comprises at least one cylinder bank having multiple cylinders, wherein each cylinder has a cylinder head with at least one inlet valve for charge air and with at least one exhaust valve for exhaust gas. Furthermore, the internal combustion engine according to the invention comprises a valve drive having at least one camshaft for actuating the or each inlet 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, comprises a fuel supply system for supplying the cylinders with fuel, wherein the fuel supply system of the internal combustion engine is embodied in modular design in such a manner that for each cylinder a fuel supply module is present in each case, wherein the respective cylinder can be supplied via the respective fuel supply module with exclusively gaseous fuel in the case of a gas engine and with both gaseous fuel and also liquid fuel in the case of a dual-fuel engine and exclusively with liquid fuel in the case of a liquid fuel engine.

During the construction or the assembly of an internal combustion engine, the fuel supply modules of the fuel supply system determine whether the internal combustion engine according to the invention is to be 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 drive are independent of the fuel supply modules employed. In the region of the cylinder heads, at least one injector for the

20195564 prh 26 -06- 2019 liquid fuel is kept ready in the case of a dual-fuel engine and of a liquid fuel engine. In the gas mode, this injector can also serve for supplying ignition oil for the gascharge air mixture.

The number of the fuel supply modules employed depends on the number of the cylinders of the internal combustion engine. Because of the modular construction it is not necessary during a new development of an internal combustion engine to newly develop all components of the same but standardised already tried and tested components can rather be utilised.

The respective fuel supply module comprises 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 an internal combustion engine designed as a dual-fuel engine, the respective fuel supply module, furthermore, comprises a supply line for the gaseous fuel, a solenoid-actuated main gas valve and a feed lance for feeding the gaseous fuel in the direction of the respective cylinder, namely upstream of the or each inlet valve for charge air of the respective cylinder. In the case of a gas engine, the respective fuel supply module, furthermore, comprises a pre-chamber purge valve for supplying the gaseous fuel in the direction of a pre-chamber of the respective cylinder. In the case of a dual-fuel engine or liquid fuel engine, the respective fuel supply module, furthermore, comprises at least one intake for supplying the liquid fuel in the direction of at least one injector of the respective cylinder. The fuel supply module provides at least the mounting flange. Dependent on whether the fuel supply module is embodied as a fuel supply module for a gas engine or for a dual-fuel engine or for a liquid fuel engine, the fuel supply module comprises further assemblies. With such fuel supply modules it is possible, utilising standardised components, to construct either a gas engine or a dual-fuel engine or a liquid fuel engine with low expenditure. In the case of a gas engine and a dual-fuel engine, the fuel supply modules make possible, furthermore, a direct access to the respective main gas valve and the respective feed lance. Following the disassembly of the feed lance from the respective fuel supply module, the respective cylinder can be freely accessed, namely without the need for completely disassembling the fuel supply module.

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Furthermore, the internal combustion engine according to the invention comprises pipe modules which extend between adjacent fuel supply modules, wherein the pipe modules in the case of a gas engine and a dual-fuel engine connect the supply lines for the gaseous fuel of adjacent fuel supply modules of adjacent cylinders of a cylinder bank with one another. In the case of a dual-fuel engine and liquid fuel engine, further pipe modules are present which extend between the adjacent fuel supply modules and connect the advances and returns for cooling water and/or the purge advances and returns and the leakage returns of adjacent cylinders of a cylinder bank with one another. The pipe modules serve for coupling the fuel supply modules installed in the region of a cylinder bank. The fuel supply modules installed in the region of a cylinder bank can be connected or coupled to one another via the pipe modules. This allows a particularly simple construction of the internal combustion engine utilising standardised components .

According to an advantageous further development of the invention, the internal combustion engine according to the invention comprises at least one support mounted on the cylinder crankcase, on which the fuel supply modules are mounted via the mounting flange. Preferentially, at least one support is mounted on the cylinder crankcase for each cylinder bank. On the respective support, not only the fuel supply modules but preferentially also the cylinder heads of the respective cylinder and/or the at least one camshaft of the valve drive 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 are preferentially mounted. The mounting of the fuel supply modules via a support mounted on the cylinder crankcase is particularly preferred. By way of this, an expensive vibration decoupling for the fuel supply modules and pipe modules becomes superfluous.

A modular system of an internal combustion engine according to the invention is defined in Claim 14.

Preferred further developments of the invention are obtained from the subclaims and the following description. Exemplary embodiments of the invention are explained in more detail by way of the drawing without being restricted to this.

There it shows:

20195564 prh 26 -06- 2019

Fig. 1 a perspective lateral view of a first internal combustion engine according to the invention designed as gas engine;

Fig. 2 a detail of the internal combustion engine of Fig. 1;

Fig. 3 a perspective lateral view of a second internal combustion engine according to the invention designed as dual-fuel engine;

Fig. 4 a detail of the internal combustion engine of Fig. 3;

Fig. 5 an alternative detail to the detail of Fig. 4;

Fig. 6 a perspective lateral view of a third internal combustion engine according to the invention designed as liguid fuel engine;

Fig. 7 a detail of the internal combustion engine of Fig. 6;

Fig. 8 an alternative detail to the detail of Fig. 7;

Fig. 9 a cross section by way of an extract through the internal combustion engine of Fig. 1.

The invention present here relates to an internal combustion engine in modular form designed as gas engine or as dual-fuel engine or as liquid fuel engine, in which independently of the concrete embodiment of the internal combustion engine a multiplicity of components can be utilised unchanged or with minimum adaptations in the sense of a modular system.

20195564 prh 26 -06- 2019

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

Fig. 1 shows a perspective view of an internal combustion engine 10 designed as gas engine. Fig. 2 and 9 show details of the internal combustion engine of Fig. 1. The internal combustion engine 10 of Fig. 1 comprises a cylinder crankcase 11, in which a crankcase that is not visible is mounted. In the shown exemplary embodiment, the internal combustion engine 10 comprises two cylinder banks 12, 13 each with multiple cylinders 14 arranged in line. Of the cylinders 14, cylinder heads 15 are shown in Fig. 9. In the shown exemplary embodiment, ten cylinders 14 each are arranged in line for each cylinder bank 12, 13. The two cylinder banks 12, 13 are positioned V-like relative to one another. Accordingly, Fig. 1 shows a gas engine with twenty cylinders in V-design.

Each cylinder 14 comprises a cylinder liner that is not visible in Fig. 1 for a piston of the respective cylinder 14 that is not visible, wherein the piston of the respective cylinder 14 is connected via a connecting rod that is not visible to the crankshaft that is likewise not visible. The cylinder head 15 of the respective cylinder 14 provides for each cylinder 14 at least one inlet valve 27 each (see Fig. 9) for charge air and at least one exhaust valve for exhaust gas each that is not shown. The inlet valves 27 for charge air and exhaust valves for exhaust gas are also referred to as gas exchange valves.

20195564 prh 26 -06- 2019

The internal combustion engine 10, furthermore, comprises a valve drive that is not visible in Fig. 1. Such a valve drive comprises at least one camshaft, emanating from which the inlet valves 27 for charge air of the cylinders 14 and the exhaust valves for exhaust gas of the cylinders 14 can be actuated. Typically, so-called rocker levers interact 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 lever.

The internal combustion engine 10 designed as gas engine shown in Fig. 1 furthermore comprises a fuel supply system 16 for supplying the cylinders 14 with fuel. The fuel supply system 16 of the internal combustion engine 10 is embodied in modular design namely in such a manner that for each cylinder 14 of the internal combustion engine 10 a fuel supply module 17 each is present. In the V-type internal combustion engine shown in Fig. 1 with altogether twenty cylinders, twenty such fuel supply modules 17 are present, namely ten fuel supply modules in the region of each cylinder bank 12, 13, which comprise ten cylinders each.

20195564 prh 26 -06- 2019

In the internal combustion engine 10 designed as gas engine shown in Fig. 1, the fuel supply modules 17 serve for supplying the cylinders 14 exclusively with a gaseous fuel.

The respective fuel supply module 17 comprises a mounting flange 18 for mounting or assembling the respective fuel supply module 17 on the internal combustion engine, a supply line 19 for the gaseous fuel, a solenoid-actuated main gas valve 20 and a feed lance 21, wherein via the feed lance 21, dependent on the activation of the main gas valve 20, the gaseous fuel can be supplied in the direction of a main chamber of the receptive cylinder preferentially in such a manner that the feed lance 21, dependent on the activation of the main gas valve 20, mixes the gaseous fuel upstream of an inlet valve 27 of the respective cylinder with the charge air in order to thereby introduce a charge air/gas mixture into the main chamber of the respective cylinder 14 via the respective inlet valve 27 of the respective cylinder 14. Fig. 2 shows cables 22 which serve for activating the main gas valves 20. Following the disassembly of the feed lance 21 by extracting the same from the respective fuel supply module 17, the respective cylinder 14 can be freely accessed for example for maintenance purposes, namely without the need of disassembling the fuel supply module 17.

In the exemplary embodiment of Fig. 1, 2 and 9, i.e. in the case of a gas engine, the respective fuel supply module 17, furthermore, comprises a pre-chamber purge valve 23. By way of the pre-chamber purge valve 23, gaseous fuel can be supplied to a pre-chamber of the respective cylinder 14. The gas supplied to the respective pre-chamber of the respective cylinder 14 via the pre-chamber purge valve 23 is ignited in the region of the respective pre-chamber in order to ultimately ignite, via the gas ignited in the prechamber, the charge air/gas mixture in the main chamber of the respective cylinder 14, which via the respective inlet valve 27, enters the main chamber of the respective cylinder 14.

Fig. 3, 4 and 5 show details of an internal combustion engine 10' designed as dual-fuel engine, which differs from the internal combustion engine 10 of Fig. 1 and 2 by the embodiment of its fuel supply system 16'. In the exemplary embodiment of Fig. 3, 4 and 5, same reference numbers are used for same assemblies as in the exemplary embodiment of Fig. 1, 2, 9. In order to avoid unnecessary repetitions, reference for same assemblies carrying the same reference numbers is made to the embodiments regarding the exemplary embodiment of Fig. 1, 2 and 9.

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The fuel supply system 16' of the dual-fuel engine 10' of Fig. 3, 4 and 5 in turn is embodied modularly and comprises for each cylinder 14 a fuel supply module 17' each, which like the fuel supply module 17 of the fuel supply system 16 of the internal combustion engine of Fig. 1 and 2 comprises the mounting flange 18, the supply line 19, the solenoidactuated main gas valve 20 with the activation cable 22 and the feed lance 21. The fuel supply modules 17' for the dual-fuel engine however do not have the pre-chamber purge valve 23 but rather an intake 24, with the help of which liquid fuel can be supplied to an injector of the respective cylinder 14. In Fig. 4, a single intake 24 for liquid fuel is present. In Fig. 5, a further intake 30 for liquid fuel is present, namely for a pilot injector.

In the case of a dual-fuel engine, the respective fuel supply module 17', furthermore, comprises an advance 31 and return 32 for cooling water for cooling the injector of the receptive cylinder, a leakage return 35 for the liquid fuel and a purge advance 33 and purge return 34 in order to scavenge the respective injector of the respective cylinder

20195564 prh 26 -06- 2019 in particular during or after a change from the liquid fuel mode to the gas fuel mode or prior to an engine stop.

Independently of whether, utilising the fuel supply modules 17, a gas engine 10 in the sense of Fig. 1, 2, 9 or, utilising the fuel supply modules 17', a dual-fuel engine 10' in the sense of Fig. 3, 4, 5 is constructed, pipe modules 25 are present which extend between adjacent fuel supply modules 17 and 17' . By way of the pipe modules 25, the supply lines 19 for the gaseous fuel of adjacent fuel supply modules 17, 17' of adjacent cylinders 14 of each cylinder bank 12, 13 can be connected to one another. Accordingly, the fuel supply modules 17 and 17' respectively in the region of each cylinder bank 12, 13 of the cylinders 14 positioned in the respective cylinder bank 12, 13 next to one another or behind one another can be coupled to one another, in order to thereby supply all cylinders 14 with gaseous fuel.

In the exemplary embodiment of Fig. 3, 4 and 5, i.e. utilising the fuel supply modules 17' for providing a dualfuel engine 10', the fuel supply modules 17' comprise further pipe modules 26 in order to connect the advances and returns 31 and 32 for cooling water and the purge advances and returns 33 and 34 and the leakage returns 35 of the fuel supply modules 17' of adjacent cylinders 14 of each cylinder bank 12, 13 to one another.

When performing for example maintenance operations on the cylinders 14, the pipe modules 25, 26 can remain mounted. For accessing a cylinder 14 it is sufficient to remove the respective feed lance 21 by extracting it from the respective fuel supply module 17.

Fig. 6, 7 and 8 show details of an internal combustion engine 10 designed as a liquid fuel engine, which differs from the internal combustion engine 10 of Fig. 1 and 2 by the embodiment of its fuel supply system 16. In the exemplary embodiment of Fig. 6, 7 and 8, same reference numbers as in the exemplary embodiment of Fig. 1, 2, 9 are again used for same assemblies. For same assemblies, which carry same reference numbers, reference is therefore again made to the explanations regarding the exemplary embodiment of Fig. 1, 2 and 9 to avoid unnecessary repetitions. The fuel supply system 16 of the liquid fuel engine 10 of Fig. 6, 7 and 8 is again embodied modularly and comprises for each cylinder 14 a fuel supply system 17 each, which like the fuel supply module 17 of the fuel supply system 16 of the internal combustion engine Fig. 1 and 2, comprises the mounting flange 18 but not the supply line 19, the solenoid-actuated main gas valve 20 with the activation cable 22 and the feed lance 21. The fuel supply modules 17 for the liquid fuel engine 10 furthermore do not have the pre-chamber purge valve 23. Fuel supply modules 17 for the liquid fuel engine 10 like the fuel supply modules 17' for the dual-fuel engine 10' rather have the intake 24, by means of which liquid fuel can be supplied to an injector of the respective cylinder 14. This liquid fuel can be for example diesel fuel or heavy fuel oil or the like. In Fig. 7, a single intake 24 for liquid fuel is present, namely for a main injector. In Fig. 8, a further intake 30 for liquid fuel is present, namely for a pilot injector.

20195564 prh 26 -06- 2019

The fuel supply system 16 of the liquid fuel engine 10 merely comprises the pipe modules 26 in order to connect the advances and returns 31 and 32 for cooling water and the purge advances and returns 33 and 34 and the leakage returns 35 of the fuel supply module 17 of adjacent cylinders 14 of each cylinder bank 12, 13 to one another, but not the pipe modules 25.

According invention to it engine 10 of an advantageous further is provided that the Fig. 1, 2, 9 and the development of the internal combustion internal combustion engine 10' of Fig. 3, 4 and 5 or the internal combustion engine 10 of Fig. 6, 7 and 8 each comprises at least one support 28 (see Fig. 5). Preferentially, such a support 28 is present in the region of each cylinder bank 12, 13 in each case, which is mounted on the cylinder crankcase 11. Preferentially, the fuel supply modules 17, 17' or 17 are then preferentially attached or mounted to this support 28 via their mounting flange 18. Depending on the concrete embodiment of the internal combustion engine 10, 10' or 10, the cylinder heads 15 of the cylinders 14, the at least one camshaft of the valve drive which is not shown, cylinder liners of the cylinders 14 as well as charge air lines 29 and exhaust lines can also be mounted on this support 28. By way of the respective support 28 it is possible to mount the fuel supply modules 17, 17' and 17 in a manner so as to be insensitive to vibrations. Expensive vibration decoupling measures can thus be omitted.

20195564 prh 26 -06- 2019

Interfaces among the fuel supply module 17 and 17' and 17 and in each case two adjoining assemblies are standardised. Independently of the number of cylinders of the internal combustion engine 10, 10' and 10, fuel supply modules 17, 17' and 17 with uniform interfaces such as mounting flanges 18, supply lines 19 for the gaseous and/or liquid fuel are employed. 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 one another in terms of further interfaces. Accordingly, the fuel supply modules 17 for the gas engine comprise in particular the pre-chamber purge valves 23. The fuel supply modules 17' and 17 for the dual-fuel engine and the liquid fuel engine comprise in particular the advances and returns 31, 32 for cooling water, the purge and leakage connections 33, 34, 35 and the intakes 24, 30 for the liquid fuel.

- 13 List of reference numbers

10', 10 Internal combustion engine

Cylinder crankcase

Cylinder bank

Cylinder

Cylinder head

16', 16 Fuel supply system

17', 17 Fuel supply module

Mounting flange

Supply line

Main gas valve

Feed lance

Cable

Pre-chamber purge valve

Intake

Pipe module

Inlet valve

Support

Charge air line

Intake

Cooling water advance

Cooling water return

Purge advance

Purge return

Leakage return

CM

CD

CD CM

CM

Claims

1.

20195564 prh 26 -06- 2019

An internal combustion engine, namely a gas engine (10) or a dual fuel engine (10 ') or a liquid fuel engine (10) with a cylinder crankcase (11) mounted on a crankshaft, the internal combustion engine having at least one row of cylinders (12, 13) comprising a plurality of cylinders (14). ), wherein each cylinder (14) comprises a cylinder head (15) having at least one intake valve (27) for supply air and having at least one exhaust valve for exhaust gas, the internal combustion engine having a valve mechanism comprising at least one camshaft or each intake valve (27) for operating the respective cylinder (14) for supply air and for operating the or each exhaust valve of the respective cylinder (14), the internal combustion engine having a fuel supply system (16, 16 ', 16) for supplying fuel to the cylinders (14), the internal combustion engine (10) 16 ', 16) is implemented as a modular structure so that each cylinder (14) has a fuel supply unit (17, 17 ', 17), whereby in the case of a gas engine only gaseous fuel and in the case of a dual fuel engine both gaseous fuel can be supplied to the respective cylinder (14) via the respective fuel supply unit (17, 17', 17) also liquid fuel and, in the case of a liquid fuel engine, only liquid fuel.

Internal combustion engine according to Claim 1, characterized in that the corresponding fuel supply unit (17, 17 ',

17) comprises a mounting flange (18) for mounting the fuel supply unit (17, 17 ', 17) to the internal combustion engine.

Internal combustion engine according to claim 2, characterized in that in the case of an internal combustion engine designed as a gas engine (10) and a dual fuel engine (10 ') in the case of an internal combustion engine, the respective fuel supply unit (17, 17') further comprises a supply pipe (19) for gaseous fuel and a supply nozzle (21) for supplying gaseous fuel in the direction of the respective cylinder (14), namely upstream of that or each supply air intake valve (27) of the respective cylinder (14).

An internal combustion engine according to claim 2 or 3, characterized in that in the case of an internal combustion engine designed as a gas engine (10), the corresponding fuel supply unit (17) further comprises a pre-chamber flush valve (23) for supplying gaseous fuel to the respective chamber.

20195564 prh 26 -06- 2019

Internal combustion engine according to any one of claims 2 to 4, characterized in that in the case of an internal combustion engine designed as a dual fuel engine (10 ') and an internal combustion engine designed as a liquid fuel engine (10), the respective fuel supply unit (17', 17) further comprises at least one intake manifold (24, 34). for supplying fuel in the direction of at least one injector of the respective cylinder (14).

An internal combustion engine according to claim 5, characterized in that in the case of an internal combustion engine designed as a dual fuel engine (10 ') and a liquid fuel engine (10), the respective fuel supply unit (17', 17) further comprises a supply connection (31) for cooling water and return , wherein the cooling water cools that or each spray nozzle of the corresponding cylinder (14).

Internal combustion engine according to claim 5 or 6, characterized in that in the dual fuel engine (10 ') and the liquid fuel engine (10) the respective fuel supply unit (17', 17) further comprises a purge flow connection (33), a purge return connection (34) and a leak return connection (35). a corresponding cylinder (14) for the spray nozzle.

Internal combustion engine according to any one of claims 2 to 7, characterized in that there are tubular modules (25, 26) extending between adjacent fuel supply units (17, 17 ', 17).

20195564 prh 26 -06- 2019

Internal combustion engine according to Claim 8, characterized in that in the case of an internal combustion engine designed as a gas engine (10) and a dual fuel engine (10 ') in the case of an internal combustion engine, the tubular modules (25) connect adjacent cylinders (14) of adjacent cylinders (14). ) gaseous fuel supply pipes (19) to each other.

Internal combustion engine according to Claim 8 or 9, characterized in that in the case of an internal combustion engine designed as a dual-fuel engine (10 ') and an internal combustion engine designed as a liquid fuel engine (10), the tubular modules (26) connect the 31, 32) and flushing flow connections and flushing return connections (33, 34) and leakage return connections (35) to each other.

Internal combustion engine according to one of Claims 2 to 10, characterized in that there is at least one support (28) mounted in the crankcase (11) of the cylinders, on which the fuel supply units (17, 17 ', 17) are fastened by a fastening flange (18).

Internal combustion engine according to Claim 11, characterized in

thence, that each cylinders: kiri in (12, 13) is cylinder. gum the crankcase (11) installed at least one bracket (28)

20195564 prh 26 -06- 2019

Internal combustion engine according to Claim 11 or 12, characterized in that the respective support (28) is provided with cylinder heads (15) and / or at least one camshaft and / or a sleeve and / or supply air pipe (29) and / or exhaust pipe for the respective cylinder (14). .

A modular system for internal combustion engines designed as a gas engine (10) or a dual fuel engine (10 ') or a liquid fuel engine (10) having cylinder chambers (11) for internal combustion engines (10), wherein the respective cylinder crankcase comprises at least one cylinder row

13) having a plurality of cylinders (14), the respective cylinder crankcase (11) having a aligned crankshaft, the system having cylinder heads (15) of internal combustion engines (10), wherein the respective cylinder head (15) of the respective cylinder (14) comprises at least one intake valve (15). 27) for supply air and exhaust gas of at least one exhaust valve, the system comprising valve mechanisms comprising at least one camshaft of internal combustion engines (10), the respective valve mechanism using said at least one supply air intake valve (27) of the respective cylinder (14) and operating said at least one corresponding cylinder (14) ) an exhaust gas exhaust valve with fuel supply units (17, 17 ', 17) for the cylinders (14) of internal combustion engines (10), whereby gaseous fuel and / or liquid can be supplied to the respective cylinder (14) via the respective fuel supply unit (17, 17', 17) fuel.

A method according to claim 14, characterized in that it is a modular system according to claim 1, having one or more features according to claim 13.