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Internal combustion engine

A technology for an internal combustion engine and a diesel engine, applied in the field of a two-stroke diesel engine, can solve problems such as high thermal load, and achieve the effects of large material throughput, inexpensive structure, and high functional safety.

Active Publication Date: 2012-10-10
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

On the other hand, it must also be taken into account that the valves assigned to the recirculation gas outlet here, unlike the outlet valves assigned to the exhaust gas outlet, are not cooled by the sweeping flushing gas and are therefore exposed to high heat during long-term operation. load

Method used

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Embodiment Construction

[0041] The main field of application of the invention is large diesel engines, especially two-stroke large diesel engines, for example as drives for ships or stationary power plants or similar applications, but the invention is not restricted thereto. based on Figures 1 to 3 An example of this two-stroke large diesel engine is shown.

[0042] This diesel engine usually contains multiple cylinders, in Figures 1 to 3 Only one of the cylinders 1 is visible in each case. The cylinders 1 each have a cylinder liner, not described in detail here, which is received on the engine block. The cylinder liner contains a working chamber 2 functioning as a combustion chamber, which is delimited by a reciprocating, vertically moving piston 3 in the drawing. Piston 3 interacts with crankshaft 4 via a usual transmission element. Working chamber 2 is loaded with fuel and oxygen-containing flushing gas for the combustion process during each working stroke. Gases generated by the combustion...

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Abstract

The present invention relates to an internal combustion engine of a two-stroke diesel, including at least an air cylinder (1) having a working chamber (2) defined by a piston (3), the working chamber is provided with a flow air inlet structure which includes at least one flow air inlet (6) arranged in the lower air cylinder area and controlled by the piston, the working chamber is provided with at least one recirculation air outlet (21) which is arranged on a recirculation device (20), the combustion gas from the working chamber is used as recirculation gas to be conveyed to the working chamber directly or indirectly by the recirculation device, at least one recirculation gas outlet of at least the air cylinder is used as an port across the air cylinder wall, the port is arranged above the flow air inlet structure in a compression stroke direction of the piston, and each related air cylinder is provided with a valve structure except the air cylinder for preventing the recirculation gas from refluxing directly.

Description

technical field [0001] The invention relates to an internal combustion engine in the form of a two-stroke diesel engine, comprising at least one cylinder comprising a working chamber delimited by a reciprocating piston, which can be charged with a flushing gas containing oxygen and fuel, said working chamber having a flushing A gas inlet structure, at least one fuel inlet arranged in the upper cylinder area and at least one exhaust gas outlet, the flushing gas inlet arrangement including at least one piston-controllable flushing gas inlet arranged in the lower cylinder area , and lead out at least one recirculation gas outlet from the working chamber, the recirculation gas outlet is equipped with a recirculation device, and the combustion gas taken out of the working chamber can be directly or indirectly returned to the working chamber as recirculation gas through the recirculation device Inside. Furthermore, the invention relates to various components and component groups fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M25/07F02B29/04F02D13/02
CPCF02M25/0727F02M25/0747F02M25/074Y02T10/121F02D21/08F02M26/23F02M26/35F02M26/41F02B25/06F02B77/04
Inventor P·W·耶斯佩森
Owner MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
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