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Two stroke large diesel engine

A two-stroke, diesel engine technology, applied in the direction of mechanical equipment, steam engine devices, engine components, etc., can solve the problems of power reduction, internal combustion engine power reduction, etc., and achieve the effect of simple structure, simple control, and good supercharging

Active Publication Date: 2018-03-16
MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The overall efficiency of the internal combustion engine thus reduces the power used to split the charge air required to drive the recirculation turbine and reduces the power consumed by the electric auxiliary drive

Method used

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  • Two stroke large diesel engine

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Embodiment Construction

[0035] The main field of application of the present invention is high-power engines, especially two-stroke large diesel engines, such as they can be applied as marine drives or in power plants. The construction and principle of operation of such engines are known per se.

[0036] exist figure 1 A two-stroke large diesel engine is schematically shown in , which may have a bank of cylinders Z. Each cylinder Z delimits a combustion chamber B with the interacting piston K. At the upper end of the combustion chamber B there is in each case an exhaust valve A, through which the exhaust gas formed during the combustion is discharged into an exhaust gas collection container 15 . From there, the exhaust gas reaches the turbine 18 of the turbocharger 1 via the outlet line(s) 12 .

[0037] However, part of the exhaust gas is led back to the intake side or the intake tract of the internal combustion engine from the exhaust gas collection container 15 in the illustrated exemplary embodi...

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Abstract

The invention relates to a large two-stroke diesel engine comprising: at least one combustion chamber delimited by a cylinder and a piston coacting with a crankshaft, the combustion chamber having at least one exhaust port for discharging exhaust gas into an exhaust tract and at least one an intake port for the input of scavenging gas from the intake tract; at least one turbocharger (1) with a compressor in the intake tract and a turbine in the exhaust tract; and from A recirculation line (3) branching from the exhaust duct or the combustion chamber and leading to the intake duct for diverting the exhaust gases back into the intake duct, in which there is at least one recirculation compressor ( 10) so that the returned exhaust gas is shunted into the scavenging air flow in the intake duct. In order to drive the recirculation compressor, a steam turbine (8) coupled with the recirculation compressor in a torque-transmitting manner is provided, and the steam turbine and the recirculation compressor form a steam turbine assembly without a transmission mechanism.

Description

technical field [0001] The invention relates to a two-stroke large diesel engine with turbocharging and exhaust gas recirculation. Background technique [0002] Especially in the case of large diesel engines, multiple turbocharging stages are common to extract energy from the exhaust gases from the engine, thereby providing a boost to the charge air to be fed into the engine or the charge gas to be fed into the engine Compression takes place and this results in improved combustion. In particular in the case of multi-cylinder engines, a plurality of turbochargers are also used for this purpose, which together form a turbocharger stage. [0003] Apart from measures, such as turbocharging, which relate to the recovery of energy from the exhausted combustion gases or exhaust gases, the focus today is on combustion that is as clean as possible. For this purpose, part of the exhaust gas is often recirculated to the intake side of the engine in order to reduce the combustion temp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B41/00F02M26/34F01D15/08F22B1/18
CPCF01K23/065F01K23/10F02B37/00F02M26/34F02M26/35F02D23/00Y02T10/12
Inventor N·谢姆特鲁普
Owner MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
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