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Two-stroke internal combustion engine with scr reactor downstream of exhaust receiver

A technology for two-stroke internal combustion engines and SCR reactors, applied to internal combustion piston engines, exhaust devices, combustion engines, etc., can solve the problems of dissolving catalyst materials, regeneration, etc.

Active Publication Date: 2019-09-24
MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the temperature is higher than 350°C, the deposited ABS may dissolve and the catalyst material is thus regenerated

Method used

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  • Two-stroke internal combustion engine with scr reactor downstream of exhaust receiver
  • Two-stroke internal combustion engine with scr reactor downstream of exhaust receiver
  • Two-stroke internal combustion engine with scr reactor downstream of exhaust receiver

Examples

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Embodiment Construction

[0026] The two-stroke internal combustion engine 1 has a plurality of cylinders 2, for example 4 to 15 cylinders. In the illustrated embodiment, the engine has six cylinders 2 . The engine can be, for example, produced by MAN Diesel & Turbo and type ME or MC, or produced by Mitsubishi. The cylinder may have a cylinder bore in the range of eg 25 to 120 cm, preferably 35 to 98 cm. The two-stroke internal combustion engine used as the main propulsion engine is of the crosshead type and typically has a speed expressed in rpm in the range of 20 to 260 rpm, typically 55 to 195 rpm. These engines are called low speed engines. Low speeds are required for high efficiency transfer of thrust via the thrusters into the water following the vessel.

[0027] Each cylinder 2 has a reciprocating piston inside the cylinder. The cylinder is typically of the single-flow scavenging type, with a scavenging air port at the lower end region of the cylinder, and an exhaust valve 3 mounted in the...

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PUM

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Abstract

The invention discloses a two-stroke internal combustion engine (1) having an SCR reactor (11) downstream of an exhaust receiver (6). A regeneration flow path (17) is connected to the SCR reactor for regenerating the catalyst material in the SCR reactor. At least one cylinder of the plurality of engine cylinders is adapted to deliver a first flow of exhaust gas at a temperature higher than that of the exhaust gas in the exhaust gas receiver (6) to the regeneration flow path (17).

Description

technical field [0001] The present invention relates to a two-stroke internal combustion engine comprising a plurality of cylinders with combustion chambers, and an exhaust system comprising an exhaust gas receiver for receiving exhaust gas from said plurality of cylinders. , at least one turbocharger and at least one SCR reactor downstream of the exhaust receiver, wherein each cylinder has a cylinder wall with a scavenging air port and a cylinder head with an exhaust valve, the exhaust A gas valve is at an exhaust pipe extending to the exhaust receiver in the exhaust system, and wherein a regeneration flow path is connectable to the SCR reactor to convert the catalyst in the SCR reactor Material regeneration. Background technique [0002] Two-stroke internal combustion engines are used as propulsion engines in ships such as container ships, bulk carriers, tankers and gas carriers. Two-stroke internal combustion engines are also used as prime movers in stationary power sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B75/02F02B75/18F02M26/04
CPCF02B75/02F02B75/18F02B2075/025F02B2075/1824Y02T10/12F01N3/2066F02B25/04F02B37/00F02D13/0242F02D41/0082
Inventor 莫藤·韦尔加德-劳尔森
Owner MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
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