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Method for controlling internal combustion engine and computing unit

A technology of a computing unit, an internal combustion engine, applied in the field of computer programs

Pending Publication Date: 2022-01-18
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of such control concepts is therefore that they only recognize the departure from the conversion window at a later time, depending on the voltage of the stepped lambda probe behind the three-way catalytic converter

Method used

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  • Method for controlling internal combustion engine and computing unit
  • Method for controlling internal combustion engine and computing unit

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Embodiment Construction

[0032] exist figure 1 A system is shown in a schematic diagram, which is provided for carrying out an advantageous refinement of the method according to the invention and which can be arranged, for example, in a vehicle and is generally designated 100 .

[0033] The system 100 includes an internal combustion engine 120, such as a diesel engine or a gasoline engine, a fuel treatment device 110, an exhaust gas catalytic converter 130 (which can be configured as a three-way catalytic converter, for example), a calculation unit 140 (such as an engine control unit (ECU)) and sensors 145, 147 , provided for example in the form of lambda sensors, thermocouples, pressure sensors and / or measuring devices for concentration, temperature, pressure or other physical or chemical quantities which can describe or influence the behavior of the exhaust gas system state.

[0034] The invention relates in particular to the modeling of the reaction kinetics of the reactions taking place in cataly...

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Abstract

The invention relates to a method (200) for controlling an internal combustion engine (120) with a catalytic converter (130) for exhaust-gas aftertreatment, comprising specification of a target fill level profile is proposed (210), which fluctuates between an upper threshold value and a lower threshold value, of at least one exhaust-gas component that can be stored in the catalytic converter (130), determination (220) of a present fill level of the at least one exhaust-gas component in the catalytic converter (130) on the basis of a theoretical catalytic converter model, and control (230) of the internal combustion engine (120) so as to generate an exhaust gas with a target concentration of the at least one exhaust-gas component such that a deviation between the present fill level and the present target fill level in accordance with the target fill level profile is reduced. A processing unit (140) and a computer program product for carrying out a method (200) of said type, and a vehicle which is configured for carrying out the method (200), are likewise proposed.

Description

technical field [0001] The invention relates to a method for controlling an internal combustion engine as well as to a computing unit and a computer program for carrying out the method. Background technique [0002] Modern motor vehicles are often equipped with catalytic converters for aftertreatment of the exhaust gases of internal combustion engines. In many cases, these catalysts are monitored and / or regulated. [0003] In the case of incomplete combustion of the air-fuel mixture in gasoline engines, in addition to nitrogen (N 2 ), carbon dioxide (CO 2 ) and water (H 2 O) in addition to a variety of combustion products, including hydrocarbons (HC), carbon monoxide (CO) and nitrogen oxides (NO x ) are legally restricted. According to the prior art, the exhaust gas limit values ​​applicable to motor vehicles can only be complied with by means of catalytic exhaust gas aftertreatment. By using, for example, a three-way catalytic converter, the pollutant components menti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/14F01N3/20F01N11/00
CPCF02D41/1444F01N3/20F01N11/00F01N11/002F02D2200/08F02D41/0295F02D41/1454F01N3/0871F01N3/0864F01N3/101F01N9/005F01N2570/16F01N2430/06F01N2900/1624Y02A50/20Y02T10/12Y02T10/40F02D41/0235F01N2900/0406
Inventor M·费
Owner ROBERT BOSCH GMBH
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