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Large two-stroke diesel engine with exhaust gas recirculation control system

An exhaust gas recirculation and two-stroke technology, which is applied to engine components, engine control, combustion engines, etc., can solve problems that cannot meet the needs of exhaust gas recirculation, and achieve load reduction, precise operation and adjustment, and good adaptability Effect

Active Publication Date: 2011-08-03
MAN ENERGY SOLUTIONS FILIAL AF MAN ENERGY SOLUTIONS SE TYSKLAND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Although the disclosed two-stroke diesel engine is capable of recirculating a portion of the exhaust gas, it cannot, however, meet the exhaust gas recirculation requirements when there are significant changes in the amount of exhaust gas, for example due to significant changes in the load on the engine

Method used

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  • Large two-stroke diesel engine with exhaust gas recirculation control system
  • Large two-stroke diesel engine with exhaust gas recirculation control system
  • Large two-stroke diesel engine with exhaust gas recirculation control system

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Embodiment Construction

[0047] Hereinafter, a detailed description of a crosshead type large turbocharged two-stroke diesel engine according to the present invention and a method for operating the crosshead type large turbocharged two-stroke diesel engine will be described through preferred embodiments.

[0048] The structure and operation of large turbocharged diesel engines of the crosshead type is also known and no further explanation should be required herein. Further details regarding the operation of the exhaust system are provided below.

[0049] figure 1 A first exemplary embodiment of a large two-stroke diesel engine 1 of the one-way flow type, which is particularly suitable for pressurized exhaust gas recirculation, is shown. The engine 1 may for example be used as a main engine in an ocean-going vessel, or as a stationary engine for operating a generator in a power station. The total output of the engine may, for example, range from 5,000 to 110,000 kW.

[0050] The engine is provided w...

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Abstract

The invention relates to a large two-stroke diesel engine with a exhaust gas recirculation control system. In particular, the invention relates to a large crosshead turbocharged two-stroke combustion engine, which comprises: a plurality of cylinders, each of which is connected to an exhaust gas receiver; and an exhaust gas recirculation flow channel for recirculating at least a part of the exhaust gas to a scavenging air channel. At least a part of the exhaust gas recirculation flow channel comprises at least two parallel links, wherein each link forms a flow channel, and each link comprises at least one device for processing or controlling the recirculated exhaust gas. The invention also relates to a method for controlling the exhaust gas recirculation system in the large crosshead turbocharged two-stroke diesel engine.

Description

technical field [0001] The invention relates to a large cross-head turbocharged two-stroke diesel engine with an exhaust purification system, in particular to a large cross-head two-stroke diesel engine with an exhaust gas recirculation system. Background technique [0002] Large two-stroke engines of the crosshead type are typically used in the propulsion systems of large ships, or as prime movers in power stations. Emission requirements have been and will gradually be difficult to meet, especially with regard to nitrogen oxides (NO x )s level. [0003] Exhaust gas recirculation (EGR) is known to help diesel engines reduce NO x A measure of emissions. However, to date there are no commercially operating large two-stroke diesel engines using exhaust gas recirculation. The reason is that implementing exhaust gas recirculation in large two-stroke diesel engines has proven to be extremely difficult. One reason why it has proven difficult to implement exhaust gas recirculat...

Claims

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Application Information

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IPC IPC(8): F02M25/07F02D21/08F02B37/007
CPCB65D2543/00527B65D2543/00537B65D43/0212B65D2543/00574B65D2543/00805B65D2543/00629B65D2543/00268B65D2543/0075
Inventor 莫腾・维吉咖德-劳尔森
Owner MAN ENERGY SOLUTIONS FILIAL AF MAN ENERGY SOLUTIONS SE TYSKLAND
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