Internal combustion engine and modular system for an internal combustion engine
阅读说明:本技术 内燃发动机和用于内燃发动机的模块化系统 (Internal combustion engine and modular system for an internal combustion engine ) 是由 M.森根 S.雷勒 于 2019-07-16 设计创作,主要内容包括:本发明涉及内燃发动机和用于内燃发动机的模块化系统,具体而言内燃发动机、即燃气发动机或双燃料发动机或液体燃料发动机具有汽缸曲轴箱,其中安装有曲轴;具有包括汽缸的汽缸排,其中汽缸包括汽缸盖,其带有充入空气的入口阀且带有废气的排气阀;具有阀驱动器,其包括凸轮轴用于促动相应的汽缸的充入空气的入口阀和废气的排气阀;具有燃料供应系统用于给汽缸供应燃料。内燃发动机的燃料供应系统以这样方式以模块化设计体现以致于对于每个汽缸各自存在燃料供应模块,其中可经由相应燃料供应模块来给相应的汽缸在燃气发动机情况下唯一供应气态燃料且在双燃料发动机情况下供应气态燃料和同样液体燃料两者且在液体燃料发动机情况下唯一供应液体燃料。(The present invention relates to an internal combustion engine and a modular system for an internal combustion engine, in particular an internal combustion engine, i.e. a gas engine or a dual fuel engine or a liquid fuel engine, having a cylinder crankcase in which a crankshaft is mounted; having a cylinder bank comprising cylinders, wherein the cylinders comprise a cylinder head with an inlet valve for charging air and with an exhaust valve for exhaust gases; having a valve drive comprising a camshaft for actuating an inlet valve for the charge air and an exhaust valve for the exhaust gas of the respective cylinder; there is a fuel supply system for supplying fuel to the cylinders. The fuel supply system of an internal combustion engine is embodied in a modular design in such a way that for each cylinder there is a fuel supply module each, wherein the respective cylinder can be supplied via the respective fuel supply module exclusively with gaseous fuel in the case of a gas engine and with a dual-fuel engine both with gaseous fuel and likewise with liquid fuel and exclusively with liquid fuel.)
1. An internal combustion engine, i.e. a gas engine (10) or a dual fuel engine (10') or a liquid fuel engine (10' '),
having a cylinder crankcase (11) in which a crankshaft is mounted;
having at least one cylinder bank (12, 13) comprising a plurality of cylinders (14), wherein each cylinder (14) comprises a cylinder head (15), the cylinder head (15) having at least one inlet valve (27) for charge air and having at least one exhaust valve for exhaust gas;
having a valve drive comprising at least one camshaft for actuating the or each inlet 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);
having a fuel supply system (16, 16'') for supplying the cylinder (14) with fuel;
wherein the fuel supply system (16, 16', 16 ") of the internal combustion engine (10) is embodied in a modular design in such a way that for each cylinder (14) there is a fuel supply module (17, 17', 17");
wherein the respective cylinder (14) can be supplied exclusively with gaseous fuel in the case of a gas engine, and with dual-fuel engines both with gaseous fuel and likewise with liquid fuel, and with liquid fuel engines exclusively with liquid fuel, via the respective fuel supply module (17, 17', 17 ").
2. An internal combustion engine according to claim 1, characterized in that the respective fuel supply module (17, 17', 17 ") comprises a mounting flange (18) for mounting the fuel supply module (17, 17', 17") on the internal combustion engine.
3. An 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 in the case of an internal combustion engine designed as a dual-fuel engine (10'), the respective fuel supply module (17, 17') furthermore comprises a supply line (19) for the gaseous fuel, a solenoid-actuated main gas valve (20) and a supply lance (21), the supply lance (21) being intended to supply the gaseous fuel in the direction of the respective cylinder (14), i.e. upstream of the or each inlet valve (27) for the charge air of the respective cylinder (14).
4. 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 respective fuel supply module (17) furthermore comprises a pre-chamber air-bleed valve (23), the pre-chamber air-bleed valve (23) being used for feeding the gaseous fuel in the direction of the pre-chamber of the respective cylinder (14).
5. The 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 in the case of an internal combustion engine designed as a liquid-fuel engine (10 "), the respective fuel supply module (17', 17") furthermore comprises at least one inlet (24, 34) which supplies the liquid fuel in the direction of at least one injector of the respective cylinder (14).
6. 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 in the case of an internal combustion engine designed as a liquid fuel engine (10 "), the respective fuel supply module (17', 17") furthermore comprises an advance (31) for cooling water and a return (32) for cooling water, wherein the cooling water is used to cool the or each injector of the respective cylinder (14).
7. The internal combustion engine according to claim 5 or 6, characterized in that, in a dual fuel engine (10') and a liquid fuel engine (10 "), the respective fuel supply module (17', 17") further comprises a bleed air advance (33), a bleed air return (34) and a leakage return (35) for the injectors of the respective cylinders (14).
8. An internal combustion engine according to any one of claims 2 to 7, characterized by conduit modules (25, 26) extending between adjacent fuel supply modules (17, 17', 17 ").
9. An internal combustion engine according to claim 8, characterized in that the conduit module (25) connects the supply lines (19) for the gaseous fuel of adjacent fuel supply modules (17, 17') of adjacent cylinders (14) of a cylinder bank (12, 13) to each other 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').
10. The 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 in the case of an internal combustion engine designed as a liquid-fuel engine (10 "), the pipe module (26) connects the advance (31) and return (32) for cooling water, and the bleed advance (33) and bleed return (34) and the leakage return (35) of adjacent cylinders (14) of a cylinder bank (12, 13) to one another.
11. The internal combustion engine according to any one of claims 2 to 10, characterized by at least one support (28) mounted on the cylinder crankcase (11), the fuel supply module (17, 17', 17 ") being mounted on the at least one support (28) via the mounting flange (18).
12. An internal combustion engine according to claim 11, characterized in that for each cylinder bank (12, 13) at least one support (28) is mounted on the cylinder crankcase (11).
13. An internal combustion engine according to claim 11 or 12, characterized in that on the respective support (28) the cylinder head (15) of the respective cylinder (14) and/or at least one camshaft and/or cylinder liner and/or charge air line (29) and/or exhaust line are mounted.
14. A modular system for an internal combustion engine designed as a gas engine (10) or as a dual fuel engine (10') or as a liquid fuel engine (10 "), with a cylinder crankcase (11) for the internal combustion engine (10), wherein the respective cylinder crankcase comprises at least one cylinder bank (12, 13) with a plurality of cylinders (14), wherein in the respective cylinder crankcase (11) a crankshaft is guided;
having a cylinder head (15) for an internal combustion engine (10), wherein the respective cylinder head (15) for the respective cylinder (14) comprises at least one inlet valve (27) for charge air and at least one exhaust valve for exhaust gas;
having a valve drive comprising at least one camshaft for an internal combustion engine (10), wherein the respective valve drive is used 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 a fuel supply module (17, 17', 17 ") for the cylinders (14) of an internal combustion engine (10), wherein via the respective fuel supply module (17, 17', 17") gaseous and/or liquid fuel can be supplied to the respective cylinder (14).
15. Modular system according to claim 14, characterised by the features according to one or more of claims 1 to 13.
Technical Field
The present invention relates to internal combustion engines. The invention further relates to a modular system for an internal combustion engine.
Background
The invention presented herein relates in particular to the field of so-called large engines or large internal combustion engines, the cylinders of which have a piston diameter 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).
Until now, large internal combustion engines have always been those which have been individually designed for the purpose of definition and for the requirements of definition. When a large internal combustion engine is to be newly developed, all components of the large internal combustion engine are generally subjected to the new development.
Heretofore, during the new development of large internal combustion engines, existing components of existing large internal combustion engines have not been utilized in order to continue to utilize the components being tested as unchanged as possible. This is disadvantageous.
Disclosure of Invention
Starting from this, the invention is based on the object of creating a new type of internal combustion engine.
This object is solved by an internal combustion engine according to claim 1.
An internal combustion engine according to the present invention includes 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 a plurality of 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 a modular design in such a way that for each cylinder, in each case, there is a fuel supply module, wherein the respective cylinder can be supplied exclusively with gaseous fuel in the case of a gas engine and both gaseous fuel and likewise liquid fuel in the case of a dual-fuel engine and exclusively with liquid fuel in the case of a liquid fuel engine via the respective fuel supply module.
During construction or assembly of the internal combustion engine, the fuel supply module of the fuel supply system determines whether the internal combustion engine according to the invention is to be constructed as a gas engine or a dual fuel engine or a liquid fuel engine. Many components of the internal combustion engine according to the invention (in particular, the cylinder crankcase, the cylinder bank and the valve drive) are independent of the fuel supply module employed. In the case of dual-fuel engines, and in the case of liquid-fuel engines, in the region of the cylinder head, at least one injector for the liquid fuel remains ready. In the gas mode, the injector can also be used to supply point fuel for the gas-charge air mixture.
The number of fuel supply modules employed depends on the number of cylinders of the internal combustion engine. Due to the modular construction, it is not necessary to newly develop all components of the internal combustion engine during its new development, but instead standardized components that have been tried and tested can be utilized.
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 gaseous fuel, a solenoid-actuated main gas valve, and a feed lance for feeding gaseous fuel in the direction of the respective cylinder (i.e. upstream of the or each inlet valve of the respective cylinder for the charge air). In the case of a gas engine, the respective fuel supply module furthermore comprises a prechamber vent valve (sometimes referred to as scavenging valve) for supplying gaseous fuel in the direction of the prechamber of the respective cylinder. In the case of a dual-fuel engine or a liquid-fuel engine, the respective fuel supply module furthermore comprises at least one inlet for supplying liquid fuel in the direction of at least one injector of the respective cylinder. The fuel supply module provides at least a mounting flange. Depending 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 components. With such a fuel supply module, it is possible to construct a gas engine or a dual-fuel engine or a liquid-fuel engine with low expenditure using standardized components. In the case of gas engines and dual-fuel engines, the fuel supply module results in the possibility of direct access to the respective main gas valve and the respective feed lance. Subsequent to detaching the feed nozzle from the respective fuel supply module, the respective cylinder is freely accessible (i.e., without requiring complete detachment of the fuel supply module).
Furthermore, the internal combustion engine according to the invention comprises a conduit module extending between adjacent fuel supply modules, wherein, in the case of a gas engine and a dual-fuel engine, the conduit module connects the supply lines for gaseous fuel of adjacent fuel supply modules of adjacent cylinders of a cylinder bank to one another. In the case of dual-fuel and liquid-fuel engines, there are additional conduit modules that extend between adjacent fuel supply modules and connect the coolant-directed and/or purge (sometimes referred to as sweep) and leak returns of adjacent cylinders of a cylinder bank to one another. The conduit module serves to couple the fuel supply modules disposed in the region of the cylinder banks. The fuel supply modules disposed in the region of the cylinder banks can be connected or coupled to one another via the pipe module. This allows a particularly simple construction of the internal combustion engine with standardized 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 support the fuel supply module is mounted via the mounting flange. Preferably, for each cylinder bank, at least one support is mounted on the cylinder crankcase. On the respective support, not only the fuel supply module but also at least one camshaft of the cylinder head of the respective cylinder and/or 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 preferably mounted. It is particularly preferred to mount the fuel supply module via a support mounted on the cylinder crankcase. This makes expensive vibration decoupling of the fuel supply module and the line module superfluous.
The modular system of the internal combustion engine according to the invention is defined in
Drawings
Preferred further developments of the invention result from the dependent claims and the description below. Exemplary embodiments of the invention, not limited thereto, are explained in more detail via the drawings.
In the drawings, there are shown:
fig. 1 is a perspective side view of a first internal combustion engine according to the invention designed as a gas engine;
FIG. 2 is a detail of the internal combustion engine of FIG. 1;
fig. 3 is a perspective side view of a second internal combustion engine according to the invention designed as a dual-fuel engine;
FIG. 4 is a detail of the internal combustion engine of FIG. 3;
FIG. 5 is an alternative detail to that of FIG. 4;
FIG. 6 is a perspective side view of a third internal combustion engine according to the present disclosure designed as a liquid fuel engine;
FIG. 7 is a detail of the internal combustion engine of FIG. 6;
FIG. 8 is an alternative detail to that of FIG. 7;
FIG. 9 is a through-the-floor of an extract, sometimes referred to as a partial, cross-section through the internal combustion engine of FIG. 1.
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 air valve
21 feeding spray pipe
22 Cable
23 precombustion chamber air-release valve
24 inlet
25 pipeline module
26 pipeline module
27 inlet valve
28 support piece
29 charging air line
30 inlet
31 cooling water advancing part
32 cooling water return part
33 deflation proceeding part
34 bleed air return
35 leaking back.
Detailed Description
The invention presented herein relates to an internal combustion engine in modular form designed as a gas engine or as a dual fuel engine or as a liquid fuel engine, wherein a large number of components can be utilized unchanged or with a minimum of matching in the sense of a modular system, independently of the specific embodiment of the internal combustion engine.
The invention furthermore 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.
Fig. 1 shows a perspective view of an
Each
The
The
In the
The respective
In the exemplary embodiment of fig. 1, 2 and 9, i.e. in the case of a gas engine, the respective
Fig. 3, 4 and 5 show details of an internal combustion engine 10' designed as a dual-fuel engine, which internal combustion engine 10' differs from the
The fuel supply system 16 'of the dual fuel engine 10' of fig. 3, 4 and 5 is in turn embodied modularly and comprises, for each
In the case of a dual-fuel engine, the respective fuel supply module 17' furthermore comprises: a
Independent of whether the
In the exemplary embodiment of fig. 3, 4 and 5 (i.e., utilizing fuel supply module 17 'to provide a dual fuel engine 10'), fuel supply module 17 'includes an
The
Fig. 6, 7 and 8 show details of an
The
According to an advantageous further development of the invention, it is provided that the
The interfaces (sometimes referred to as interfaces or interfaces) among the
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