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Method for operating a combustion engine and device for executing the method

A technology of internal combustion engine and diesel internal combustion engine, which is applied in engine control, fuel injection control, internal combustion piston engine, etc., can solve the problem of easy interference in control/regulation, and achieve the effect of avoiding load

Active Publication Date: 2016-12-28
MAN ENERGY SOLUTIONS SE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the described control / regulation is susceptible to interference

Method used

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  • Method for operating a combustion engine and device for executing the method
  • Method for operating a combustion engine and device for executing the method

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Embodiment Construction

[0015] The invention relates to a method for operating an internal combustion engine and a control device for carrying out the method.

[0016] figure 1 A greatly simplified block diagram of an internal combustion engine is shown, which includes a combustion motor 2 and an exhaust gas aftertreatment system 3 arranged downstream of the combustion motor 2 . Fuel 4 and charge air 5 for combustion of fuel 4 are supplied to internal combustion motor 2 , wherein exhaust gas 6 generated in combustion motor 2 during combustion of fuel 4 is treated for exhaust gas aftertreatment. The exhaust gas is fed to the exhaust gas aftertreatment system 3 , and the exhaust gas leaves the exhaust gas aftertreatment system 3 as cleaned exhaust gas 7 .

[0017] In the exemplary embodiment shown, it is assumed that the exhaust gas aftertreatment system 3 is an exhaust gas aftertreatment system comprising at least one SCR catalyst in which a reducing agent is required for exhaust gas purification 8 ...

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Abstract

A method for operating an internal combustion engine (1), in particular a marine diesel engine operating with heavy oil, wherein the internal combustion engine(1) has a combustion motor (2) for combustion of fuel and an exhaust gas after-treatment system (3) arranged behind the combustion motor (2); the exhaust gas after-treatment system is used for purifying exhaust gas generated at the time of combustion of a fuel in the case of using a reducing agent and / or an absorbent; and wherein, depending on the cost of the fuel to be combusted in the combustion motor (2) and in accordance with the cost of the reducing agent and / or the absorber to be used in the exhaust after-treatment system (3) in an operating point where the combustion engine (1) is operated and the minimum operating medium cost of fuel and reducing agent and / or absorbent is generated.

Description

technical field [0001] The invention relates to a method for operating an internal combustion engine according to the preamble of claim 1 . Furthermore, the invention relates to a control device for carrying out the method. Background technique [0002] Known internal combustion engines from practice, such as marine diesel internal combustion engines, have a combustion motor (Verbrennungsmotor) in which fuel is combusted and a motor arranged downstream of the combustion motor for controlling the combustion of the fuel An exhaust gas post-treatment system for purifying the exhaust gas generated in the above-mentioned combustion motor. The marine diesel internal combustion engine is preferably operated here with heavy oil. [0003] It is known from practice to denitrify and preferably desulfurize exhaust gases in exhaust gas aftertreatment systems of internal combustion engines. In order to denitrify the exhaust gas, so-called SCR catalysts are used according to the prior a...

Claims

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Application Information

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IPC IPC(8): F02D41/14F02D19/06
CPCF02D19/06F02D41/14F01N3/0807F01N3/105F01N3/2066F01N3/208F01N11/00F01N2560/02F01N2590/08F01N2610/02F01N2900/0416F01N2900/08F02D19/0657F02D41/0025F02D41/0235F02D41/025F02D2200/701F02D2250/36Y02T10/12Y02T10/30F01N9/00F02D19/0602
Inventor M.布格施A.德林
Owner MAN ENERGY SOLUTIONS SE