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Large two-stroke diesel engine with exhaust gas recirculation system

An exhaust gas recirculation and two-stroke technology, which is applied in the direction of exhaust gas recirculation, engine components, engine control, etc., can solve the problems of expensive blower motors and increased loads, and achieve multi-efficiency effects

Active Publication Date: 2011-08-03
曼恩柴油机涡轮公司,曼恩柴油机涡轮德国公司子公司
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AI Technical Summary

Problems solved by technology

Also, the electric motors used to drive blowers with such high power demands are very expensive
[0007] Consequently, the mass flow at the outlet of the scrubber will increase corresponding to the mass flow of evaporated water and will increase the load on the EGR blower located downstream of the scrubber and upstream of the pressurized scavenging gas cooler

Method used

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

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Embodiment Construction

[0039] 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 exemplary embodiments.

[0040] 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.

[0041] figure 1 A first exemplary embodiment of a large two-stroke diesel engine 1 according to the invention 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.

[0042] The engine is provided with a plurality of cylinders 2 arranged side by side with each other alon...

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Abstract

The invention relates to a large two-stroke diesel engine with a exhaust gas recirculation system. In particular, the invention relates to a large crosshead turbocharged two-stroke diesel 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 supplying a part of the exhaust gas to a scavenging air flow, and also comprises a wet scrubber, a cooler, a device for removing condensed water, and a blower in the exhaust gas recirculation flow channel. The invention also relates to a method for the exhaust gas recirculation in the large crosshead turbocharged two-stroke diesel engine, wherein the engine comprises a plurality of cylinders, each of which is connected to an exhaust gas receiver.

Description

technical field [0001] The present invention relates to a large crosshead turbocharged two-stroke internal combustion piston engine, preferably a diesel engine with an exhaust gas purification system, in particular to a crosshead large two-stroke diesel engine with an exhaust gas recirculation system engine. 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 reas...

Claims

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Application Information

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IPC IPC(8): F02M25/07F02B37/007F02B25/14F02D21/08
CPCA61G17/00A61G2017/041Y02T10/146A61G17/04Y02T10/121Y02T10/144F02B25/02F02M26/35B01D47/00B01D53/92F02M25/025
Inventor 彼得·施约尔达格
Owner 曼恩柴油机涡轮公司,曼恩柴油机涡轮德国公司子公司
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