Internal combustion engine, exhaust valve and cylinder head therefor, and production, operation and use of an internal combustion engine

A technology of internal combustion engine and exhaust valve, applied in the direction of internal combustion piston engine, combustion engine, machine/engine, etc., can solve problems such as consumption, achieve the effect of simple structure and avoid power loss

Active Publication Date: 2013-10-23
MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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  • Internal combustion engine, exhaust valve and cylinder head therefor, and production, operation and use of an internal combustion engine
  • Internal combustion engine, exhaust valve and cylinder head therefor, and production, operation and use of an internal combustion engine
  • Internal combustion engine, exhaust valve and cylinder head therefor, and production, operation and use of an internal combustion engine

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Embodiment Construction

[0049] The main field of application of the invention is two-stroke large diesel engines, as they are used, for example, as ship drives. The basic structure and mode of operation of such arrangements are known per se. In this case, a part of the exhaust gas is often returned, that is to say recirculated into the working chamber 2 for the reduction of NO x emissions. In order to simplify the control and ensure precise metering, this so-called recirculation gas should be the purest possible combustion gas, that is to say not exhaust gas diluted with purge gas.

[0050] figure 1 For example, an internal combustion engine with combustion gas recirculation can be seen, which is developed according to an embodiment of the invention. However, the invention is not limited to the presence of recirculation figure 1 The structure shown purely by way of example. It is also possible to use different exhaust valves and cylinder heads constructed in accordance with the invention, such a...

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Abstract

The invention relates to an internal combustion engine, in particular a large two-stroke diesel engine, comprising at least one combustion chamber (2) delimited by a cylinder (1) and a piston (3) interacting with a crankshaft, said combustion chamber comprising at least one combustion gas outlet (20; 120; 320; 420), which is formed between a valve disk (8; 108; 308) of an exhaust valve (9; 109; 309) and an associated disk seat, and at least one charge air inlet (4). The exhaust valve (9; 109; 309) can be actuated between an open position and a closed position. The combustion gas outlet (20; 120; 320; 420) is connected to at least one outlet channel (11) and to at least one combustion gas draw-off duct (18; 118a, 118b; 318, 318a; 418, 418a), for example in order to recirculate part of the combustion gas generated during combustion to the charge air inlet (4). The invention further relates to an exhaust valve (9; 109; 309) and to a cylinder head for such an internal combustion engine. The invention is characterized by a throttle device (10; 110; 310) which is fastened to the exhaust valve (9; 109; 309) or integrally molded as part of the exhaust valve (9; 109; 309) and by means of which the combustion gas is drawn off in a predetermined way. The invention further relates to a method for producing an internal combustion engine, to a method for operating an internal combustion engine, and to a use for an internal combustion engine.

Description

technical field [0001] The invention relates to an internal combustion engine, in particular a two-stroke large diesel engine, having the features of the preamble of claim 1; an exhaust valve according to the preamble of claims 13 and 19 and a system for such Cylinder head of an internal combustion engine; a method for producing such an internal combustion engine according to the preamble of claim 20; use of such an internal combustion engine according to the preamble of claim 26 and the preamble of claim 27 A method for operating such an internal combustion engine as described in the preamble. Background technique [0002] Combustion gas recirculation is known in internal combustion engines of this type in order to load the charge air fed to the combustion chambers of the internal combustion engine with the recirculated combustion gas. thus reducing nitrogen oxides (NO X ) emissions. In addition to precompressed and if necessary preconditioned, e.g. dried, filtered or te...

Claims

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Application Information

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IPC IPC(8): F02M25/07F01L1/28F01L3/20F01L3/22
CPCY02T10/146F01L3/06F02M25/0717Y02T10/121F02M25/0713F02M25/0747F02M26/10F02M26/14F02M26/41Y02T10/12F01L1/28F01L3/20F01L3/22
Inventor D·拉尔森
Owner MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
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