Internal combustion engine, in particular a stationary gas engine, comprising a combustion chamber

Patent metadata

Field	Value
Publication number	US-9926837-B2
Application number	US-201414247590-A
Country	US
Kind code	B2
Filing date	Apr 8, 2014
Priority date	Oct 19, 2011
Publication date	Mar 27, 2018
Grant date	Mar 27, 2018

Abstract

An internal combustion engine, in particular a stationary gas engine, includes a combustion chamber to which a propellant can be fed from a first propellant source via a combustion chamber pipe, and a pre-combustion chamber to which a flushing gas can be fed via a flushing gas pipe. A flushing gas mixer, in which a propellant to be fed via a propellant pipe from the first propellant source or from a second propellant source, and a synthesis gas to be fed via a synthesis gas pipe, can be mixed is provided. A mixer outlet opens into the flushing gas pipe, and the synthesis gas can be generated by a reformer to which a fuel can be fed from a fuel source via a reformer feed pipe. The reformer outlet of the reformer opens into the synthesis gas pipe, and a cooling device for cooling the synthesis gas is provided.

First claim

The invention claimed is:

1. An internal combustion engine comprising:
a combustion chamber to which an engine fuel is fed from a first engine fuel source via a combustion chamber conduit;
a prechamber to which a scavenging gas is fed via a scavenging gas conduit;
a scavenging gas mixer configured to mix an engine fuel fed via an engine fuel conduit from the first engine fuel source or from a second engine fuel source and a synthesis gas fed via a synthesis gas conduit, with a mixer outlet of said scavenging gas mixer opening into said scavenging gas conduit;
a cooling circuit for cooling components of the internal combustion engine, said cooling circuit including a cooling device for cooling the synthesis gas, said cooling device integrated into a heat utilization system of a gas engine;
a condensate separation device downstream of said cooling device for separating condensate from the synthesis gas and for supplying separated condensate to a reforming gas mixer; and
a reformer arranged upstream of the scavenging gas mixer and downstream of the reforming gas mixer for producing the synthesis gas, with a combustion fuel fed to said reformer via a reformer feed conduit from a combustion fuel source, and a reformer outlet of said reformer opening into said synthesis gas conduit.

2. The internal combustion engine as set forth in claim 1 , wherein said cooling device includes a first cooling stage and a second cooling stage connected downstream of said first cooling stage.

3. The internal combustion engine as set forth in claim 1 , wherein said cooling device is part of a cooling circuit for cooling further components of said internal combustion engine.

4. The internal combustion engine as set forth in claim 3 , wherein said cooling circuit is configured to cool at least one of a group consisting of cylinder liners and cylinder heads.

5. The internal combustion engine as set forth in claim 1 , further comprising a condensate conduit for supplying condensate produced in said condensate separation device to said reformer.

6. The internal combustion engine as set forth in claim 1 , further comprising a scavenging gas compressor for compressing the scavenging gas.

7. The internal combustion engine as set forth in claim 1 , wherein the combustion fuel source feeding the combustion fuel to said reformer is the first engine fuel source or the second engine fuel source.

8. The internal combustion engine as set forth in claim 1 , further comprising at least one substance flow conduit for feeding at least one substance from a group consisting of water, water vapor, air, a fuel-air mixture, an exhaust gas from the internal combustion engine, and the combustion fuel to said reformer.

9. The internal combustion engine as set forth in claim 8 , wherein the reforming gas mixer communicates with said at least one substance flow conduit, is configured to mix the at least one substance, and has a reforming gas mixer outlet opening into said reformer feed conduit.

10. The internal combustion engine as set forth in claim 8 , further comprising a compressor for compressing at least one of air fed to said reformer and the fuel-air mixture fed to said reformer.

11. The internal combustion engine as set forth in claim 8 , wherein at least one of air fed to said reformer and the fuel-air mixture fed to said reformer forms a partial flow of the air and the fuel-air mixture supplied to said combustion chamber.

12. The internal combustion engine as set forth in claim 8 , wherein said at least one substance flow conduit includes an exhaust gas substance flow conduit for supplying the exhaust gas, said exhaust gas substance flow conduit branching from an exhaust gas conduit.

13. The internal combustion engine as set forth in claim 12 , wherein said exhaust gas substance flow conduit branches from said exhaust gas conduit upstream of an exhaust gas turbocharger or between exhaust gas turbines of an exhaust turbocharger of said internal combustion engine.

14. The internal combustion engine as set forth in claim 12 , further comprising an exhaust gas filter arranged in said exhaust gas conduit.

15. The internal combustion engine as set forth in claim 8 , further comprising a steam generating device for generating water vapor to be fed to said reformer.

16. The internal combustion engine as set forth in claim 15 , wherein said steam generating device is configured to use one of exhaust gas heat from said internal combustion engine or waste heat produced during production of the synthesis gas by said steam generating device arranged in an exhaust gas conduit or in said synthesis gas conduit.

17. The internal combustion engine as set forth in claim 1 , further comprising at least one scavenging gas heating device for heating the scavenging gas.

18. The internal combustion engine as set forth in claim 1 , further comprising a scavenging gas buffer in said scavenging gas conduit for intermediate storage of the scavenging gas.

19. The internal combustion engine as set forth in claim 1 , further comprising a partial flow conduit for feeding a partial flow of the scavenging gas to said combustion chamber, said partial flow conduit being configured to open into said combustion chamber conduit.

20. The internal combustion engine as set forth in claim 1 , further comprising a desulfurization device for desulfurizing the combustion fuel.

21. An internal combustion engine comprising:
a combustion chamber to which an engine fuel is fed from a first engine fuel source via a combustion chamber conduit;
a prechamber to which a scavenging gas is fed via a scavenging gas conduit;
a scavenging gas mixer configured to mix an engine fuel fed via an engine fuel conduit from the first engine fuel source or from a second engine fuel source and a synthesis gas fed via a synthesis gas conduit, with a mixer outlet of said scavenging gas mixer opening into said scavenging gas conduit;
a first cooling circuit for cooling components of the internal combustion engine;
a second cooling circuit independent of said first cooling circuit, said second cooling circuit including a cooling device for cooling the synthesis gas, said cooling device integrated into a heat utilization system of a gas engine;
a condensate separation device downstream of said cooling device for separating condensate from the synthesis gas and for supplying separated condensate to a reforming gas mixer; and
a reformer arranged upstream of the scavenging gas mixer and downstream of the reforming gas mixer for producing the synthesis gas, with a combustion fuel fed to said reformer via a reformer feed conduit from a combustion fuel source, and a reformer outlet of said reformer opening into said synthesis gas conduit.

Assignees

• Ge Jenbacher Gmbh & Co Og

Inventors

• Gruber Friedrich
• Wall Guenther

Classifications

• C01B2203/06

  Integration with other chemical processes · CPC title

• F02M21/0227

  Means to treat or clean gaseous fuels or fuel systems, e.g. removal of tar, cracking, reforming or enriching · CPC title

• C01B2203/0495

  the impurity being water · CPC title

• C01B2203/0894

  Generation of steam · CPC title

• C01B3/32

  by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide or air · CPC title