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Diesel engine and method for increasing power of diesel engine

A diesel engine and engine technology, which is applied in the direction of engine components, engine control, combustion engine, etc., can solve the problem that the power loss cannot be fully compensated, and achieve the effect of low cost

Active Publication Date: 2013-11-13
MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, this does not fully compensate for the power loss at the turbocharger caused by the exhaust gas aftertreatment system or the back pressure that develops in the exhaust gas aftertreatment system

Method used

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  • Diesel engine and method for increasing power of diesel engine

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Embodiment Construction

[0026] The reference numeral 1 here designates a combustion chamber of the engine, to which the scavenging gas is fed via a scavenging gas collector 9 at an air intake not shown in detail, and from which exhaust gas passes through which is likewise not shown. The outlet valve shown in detail discharges into the exhaust gas collector 8 . The exhaust gases are fed to the turbine side of the turbocharger stages 2 , 3 . Reference numeral 3 designates a turbine of a turbocharger 2 , 3 , which is shown here only by way of example, and reference numeral 2 designates a compressor of this turbocharger 2 , 3 . Arranged on the low-pressure side of the exhaust gas downstream of the turbine 3 in the direction of flow is an exhaust gas aftertreatment system 4 , 5 which has a steam generator 4 through which the exhaust gas is guided in order to utilize the existing The waste heat in the exhaust gas is used to generate steam. The steam is thus used, for example, in the generator set of the ...

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Abstract

The invention relates to a diesel engine and a method for increasing power of a diesel engine. The diesel engine comprises at least one turbocharger stage, at least one exhaust gas aftertreatment system, and a compensation device not driven by the turbocharger stage, wherein the at least one exhaust gas aftertreatment system has a certain number of units for guiding exhaust gas, and the compensation device is at least one auxiliary air blower which is driven independent of the turbocharger stage. According to the invention, the auxiliary air blower is at the downstream of the turbocharger stage, is arranged at a pipeline section at a high pressure side of scavenging gas from the turbocharger stage to a plurality of combustion chambers, and is designed for continuously running in the whole load range of the diesel engine and assisting the turbocharger stages when the combustion chambers are subjected to pressurization, thereby assisting the turbocharger stages to compensate the reduction in the pressure difference used for the turbocharger stages at the high pressure side of the scavenging gas of the turbocharger stages with the exhaust gas aftertreatment when the combustion chambers are subjected to the pressurization.

Description

technical field [0001] The invention relates to a diesel engine and a method for increasing the power of the diesel engine. The invention relates in particular to large diesel engines, such as for example for driving ships or for generating electricity in power plants, and is especially applicable to two-stroke large diesel engines. Background technique [0002] In such a diesel engine, a turbocharger stage consisting of one or more turbochargers is provided for supercharging the combustion chamber(s) with scavenging gas, which utilizes Exhaust gases from the combustion chamber(s), usually collected in an exhaust collector, are used as energy source. Here, use is made of the pressure difference between the exhaust gas from the combustion chamber(s) or exhaust gas collector and the surroundings into which the exhaust gas is discharged. The purge gas can be fresh air or a gas mixture, for example, of fresh air and recirculated exhaust gas. [0003] In this case, a mostly el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B39/10F02M25/07F02B33/40F02B37/04
CPCF02D41/0007F02D41/062F02B39/10Y02T10/144F02B37/04F01N5/02F01N2590/02Y02T10/12F02D23/00
Inventor N·谢姆特鲁普
Owner MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
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