Internal combustion engine

An internal combustion engine and recirculation technology, applied in the direction of internal combustion piston engines, combustion engines, mechanical equipment, etc., can solve complex problems, achieve the effects of simplifying the structure, realizing NOx emissions, and reducing pressure fluctuations

Active Publication Date: 2010-06-16
MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Internal combustion engine
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Embodiment Construction

[0029] The main field of application of the invention is large diesel engines, in particular two-stroke large diesel engines, such as large diesel engines used as drives for ships or stationary power plants. Each of the illustrated embodiments is based on a two-stroke large diesel engine. This is only the preferred application. However, the present invention is not limited thereto.

[0030] Such engines typically include multiple cylinders. exist Figures 1 to 3 One such cylinder 1 is shown in each case. The cylinder contains a working chamber 2 acting as a combustion chamber, which is delimited by a reciprocating, here vertically moving, piston 3 . Piston 3 cooperates with a crankshaft 4 via conventional transmission elements. In each working stroke, in order to realize the combustion process, the working chamber 2 is loaded with fuel and contains oxygen (O 2 ) of the scavenging gas. The exhaust gas formed by the combustion is discharged through the exhaust gas outlet ...

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Abstract

The invention relates to an internal combustion engine which is provided with at least one cylinder (1) and a device used for recycling the exhaust gas. The cylinder is provided with an working chamber (2) which is limited by a reciprocating piston (3) and is loaded by the scavenging gas comprising compressed gas and fuel. The working chamber is provided with at least one scavenging gas inlet (6), at least one fuel inlet and at least one exhaust gas outlet (5). An exhaust duct (9) is connected with the exhaust gas outlet. A pressure impact (19) is generated in the exhaust duct (9) through the exhaust flowed out from the opened exhaust outlet (5). Through a device used for exhaust recirculation, one part of the exhaust can be used as the recirculation gas for being directly or indirectly guiding into the working chamber (2). Thus the dilution of the recirculation gas by the scavenging gas is prevented and a simple structure is realized. A recirculation gas outlet (21) is leaded out from the exhaust duct (9) connected with the exhaust outlet (5). The recirculation gas outlet can be closed through an attaching valve (22). The valve opens the attaching recirculation gas outlet (21) in an area between increasing and reducing the pressure impact (19) generated in the exhaust duct (9).

Description

technical field [0001] The invention relates to an internal combustion engine having at least one cylinder and a device for recirculation of exhaust gases, said cylinder having a working chamber delimited by a reciprocating piston capable of being charged with oxygen-containing scavenging gas and fuel chamber, the working chamber has at least one scavenging gas inlet, at least one fuel inlet and at least one exhaust gas outlet, to which the exhaust gas duct is connected, a part of the exhaust gas can be recirculated by the device for exhaust gas recirculation The gas is led directly or indirectly back into the working chamber. The invention also relates to various components and groups of components for an internal combustion engine of the aforementioned type. Background technique [0002] Exhaust gas recirculation for reducing NO in the combustion process x Formation. [0003] An internal combustion engine of the above-mentioned type is known, for example, from DE 101 16...

Claims

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Application Information

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IPC IPC(8): F02M25/07F02D21/08
CPCF02M25/0709F02M25/0743Y02T10/121F02M25/0707F02M26/05F02M26/06F02M26/37F01N13/08F02D9/04F02D21/08
Inventor J·卡尔托弗特
Owner MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
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