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Diesel engine and method for increasing the power of a diesel engine

A diesel engine, power technology, 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: 2017-03-01
MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • 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 the power of a 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 the power of a diesel engine. The diesel engine has: at least one turbocharger stage; at least one exhaust gas aftertreatment system with a number of units through which the exhaust gas is guided; and a compensating device not driven by the turbocharger stage, i.e. at least An auxiliary blower driven independently of the turbocharger stage. According to the invention, the auxiliary blower is arranged downstream of the turbocharger stage in the line section leading from the turbocharger stage to the number of combustion chambers on the high-pressure side of the scavenging gas, and the auxiliary blower is designed Used to assist the turbocharger stage when supercharging the combustion chamber for continuous operation over the entire load range of the diesel engine, in order to compensate for the The reduction of the differential pressure available to the turbocharger stage on the high-pressure side of the scavenging gas of the stage as a result of exhaust gas aftertreatment.

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 Patents(China)
IPC IPC(8): F02B39/10F02M26/08F02B33/40F02B37/04
CPCF01N5/02F01N2590/02F02B37/04F02B39/10F02D41/0007F02D41/062Y02T10/12F02D23/00
Inventor N·谢姆特鲁普
Owner MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND