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Method for operating an internal combustion engine installed in a vehicle

A technology in internal combustion engines and vehicles, which is applied in the direction of internal combustion piston engines, combustion engines, and electronic control of exhaust gas treatment devices. It can solve problems such as unreasonable engine control system design customers, difficulty in compliance with emission limits, and large degrees of freedom.

Active Publication Date: 2022-05-13
DRESDEN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regarding the upcoming RDE certification, this method will only be implemented in a restricted way in the future
Compliance with emission limits (and therefore especially NO x Compliance with limit values) is more difficult
In addition, the design of the engine control system for the worst-case scenario is unreasonable to the customer, and for setting CO 2 goal is impossible

Method used

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  • Method for operating an internal combustion engine installed in a vehicle
  • Method for operating an internal combustion engine installed in a vehicle
  • Method for operating an internal combustion engine installed in a vehicle

Examples

Experimental program
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Embodiment Construction

[0047] The basis for the developed model for calculating the engine processes as well as the tests carried out formed a four-cylinder diesel engine with common rail direct injection system and exhaust gas turbocharging. The 2.0-litre in-line engine (Reihenmotor) achieves a maximum full-load torque of 330Nm and delivers up to 110kW at the rated output point. Therefore, as standard, a water / air-charge-air cooler is used to cool the compressed intake air, which operates in a separate low-temperature circuit. NO x The internal engine reduction of emissions takes place via a combined EGR system consisting of low pressure exhaust gas recirculation and high pressure exhaust gas recirculation (LP-EGR and HP-EGR). In the case of LP-EGR, the exhaust gas part flow discharged after the DPF is cooled before being introduced into the compressor line by means of a heat exchanger. Furthermore, the baffles in the exhaust system partially achieve the necessary pressure gradient for this purpo...

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Abstract

The invention relates to a method for operating an internal combustion engine installed in a vehicle, in particular a diesel engine, wherein after exhaust gas aftertreatment the instantaneous concentration of pollutants contained in the exhaust gas is measured or calculated in the direction of flow, said Concentrations especially NO in exhaust gas x concentration. Using the determined pollutant concentrations, compliance with pollutant limit values ​​in mg / km based on predefined distances is monitored by means of operating parameters of the internal combustion engine and / or the exhaust gas aftertreatment system which in particular influence the form of regulation and / or compliance with pollutant limits based on predefined power in mg / kWh.

Description

technical field [0001] The invention relates to a method for operating an internal combustion engine installed in a vehicle, in particular a diesel engine preferably installed in a passenger car. Background technique [0002] The continuous tightening of emission limits thus justifies the use of corresponding measures both inside and outside the engine. especially for NO x Emissions, based on acceptable limits, are projected to decrease by up to 73% between 1990 and 2020. However, measures taken by the Federal Environment Agency have so far failed to verify these predictions. In particular, NO close to transportation and downtown 2 Emissions still show consistently high values. Due to the fact that this is mainly due to deviations between the emission values ​​during the test cycle and during customer operation, from September 2017, within the scope of the certification process, exhaust emissions during actual driving operation will also be introduced Tested to show pos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/14F02D41/24F02D41/00
CPCF02D41/1406F02D41/2422F02D41/0007F02D41/0047F02D41/005F02D2250/36F02D2250/38Y02T10/12Y02T10/40F01N3/2066F01N9/00F01N11/00F01N2610/02
Inventor 罗伯特·沃尔特蒂洛·罗斯汉斯·泽尔贝克
Owner DRESDEN UNIVERSITY OF TECHNOLOGY
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