Large-scale two-stroke turbocharging compression ignition internal combustion engine having waste gas cleaning system

A technology for internal combustion engines and turbocharging, applied to internal combustion piston engines, combustion engines, engine components, etc., can solve problems such as low NOx, low exhaust gas temperature, and conversion

Inactive Publication Date: 2016-10-26
曼能解决方案(曼能解决方案德国股份公司)分公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, due to the characteristics of two-stroke turbocharged engines, the exhaust gas temperature at low engine loads (for example, below 40%

Method used

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  • Large-scale two-stroke turbocharging compression ignition internal combustion engine having waste gas cleaning system
  • Large-scale two-stroke turbocharging compression ignition internal combustion engine having waste gas cleaning system
  • Large-scale two-stroke turbocharging compression ignition internal combustion engine having waste gas cleaning system

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Embodiment Construction

[0046] In the following detailed description of a large crosshead turbocharged two-stroke diesel engine and a method for operating a large crosshead turbocharged two-stroke diesel engine according to the invention will be described by way of example embodiments.

[0047] The construction and operation of large turbocharged crosshead two-stroke compression ignition internal combustion engines are well known and will not require further explanation in this text. Additional details regarding the operation of the exhaust gas cleaning system are provided below.

[0048] figure 1 A schematic depiction of a first example embodiment of a large two-stroke compression-ignition internal combustion engine 1 according to the invention is shown. The engine may, for example, be used as the main engine in an ocean-going vessel or as a stationary engine for operating a generator in a power station. For example, the total output of the engine may range from 5,000 kW to 110,000 kW.

[0049] T...

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Abstract

The invention discloses a crosshead type large-scale turbocharging two-stroke compression ignition internal combustion engine having a waste gas cleaning system. The crosshead type large-scale turbocharging two-stroke compression ignition internal combustion engine includes: a turbocharger having a waste gas drive turbine connected to a compressor for transmission boosting and scavenging; a plurality of cylinders which is connected to a scavenging receiving member and a waste gas receiving member; a selective catalytic reduction reactor which has an inlet connected to an outlet of the waste gas receiving member; an exhaust duct for connecting an outlet of the selective catalytic reduction reactor to an inlet of a turbine; a scavenging duct which connects an outlet of the compressor to an inlet of the scavenging receiving member via a scavenging cooler; an auxiliary blower which can assist the compressor during low load of an engine in the scavenging duct; a controllable bypass duct which extends to a position of the exhaust duct from a position of the scavenging duct; a electronic control bypass blower which is used for assisting flow of scavenge air from the scavenging duct to the exhaust duct; and an electronic control unit.

Description

technical field [0001] The present invention relates to a crosshead large turbocharged two-stroke compression ignition internal combustion engine, preferably an engine with an exhaust gas purification system, especially a crosshead large two-stroke diesel engine with a selective catalytic reduction reactor. Background technique [0002] Large crosshead two-stroke diesel engines are commonly used in the propulsion systems of large ships or as prime movers in power plants. The outbreak requirements have been and will become increasingly difficult to meet, especially for mononitrogen (NO x )grade. [0003] The use of selective catalytic reduction (SCR) reactors is known to assist in reducing NO in diesel engines x Distributed measures. A minimum temperature of about 300 to 350° C. for the exhaust gas entering the SCR converter is required for proper startup of the SCR reactor. [0004] However, due to the characteristics of two-stroke turbocharged engines, the exhaust gas t...

Claims

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Application Information

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IPC IPC(8): F02B33/44F02B37/00F02B39/10F01N3/28
CPCF01N3/2892F02B33/44F02B37/005F02B39/10F02B2700/032F01N2340/06F01N2900/1404Y02T10/12F01N3/2066F02B19/14F02B25/02F02B37/12F02B75/02F02B2075/025
Inventor 彼得·斯柯达哥
Owner 曼能解决方案(曼能解决方案德国股份公司)分公司
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