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Device and method of predicting NOx generation amount

一种生成量、设备的技术，应用在机械设备、测量装置、空气质量改善等方向，能够解决可靠性劣化、生成量与预测量误差等问题，达到准确预测、准确NOx量的效果

Inactive Publication Date: 2017-07-21
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, according to this technique, reliability may be degraded due to the complicated calculation process and the simplified assumptions used to simplify the calculation process
Also, in the conventional technique, since the NOx amount is estimated based on the measured value when the engine is in a normal state, an error between the generated amount and the predicted amount may occur due to variations between engines and variations in environmental conditions

Method used

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  • Device and method of predicting NOx generation amount
  • Device and method of predicting NOx generation amount
  • Device and method of predicting NOx generation amount

Examples

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Embodiment approach

[0036] The nitrogen oxide generation rate calculator 122 may be configured to predict or determine the composition ratio of the gases in the mixture and the flame temperature using the driving variables of the engine, and to calculate the nitrogen around the flame using the composition ratio of the gases in the mixture and the flame temperature oxide formation rate. The NOx generation concentration calculator 124 may be configured to calculate the NOx generation time and the NOx generation region using the amount of fuel injected to the cylinder and the engine speed (revolutions per minute—RPM). The NOx generation concentration calculator 124 may be configured to calculate the NOx generation concentration around the flame using the NOx generation rate, the NOx generation time, and the NOx generation area. The controller 130 may be configured to then use the NOx production rate and NOx production concentration around the flame to predict or determine the NOx production around t...

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Abstract

A method of predicting the NOx generation amount is provided. The method includes predicting a composition ratio of a gas in a mixture and a flame temperature using driving variables of an engine and calculating a nitrogen oxide generation rate using the composition ratio of the gas in the mixture and the flame temperature. Additionally, a nitrogen oxide generation concentration around flame is calculated using the nitrogen oxide generation rate and a total nitrogen oxide generation amount of a cylinder is predicted using the nitrogen oxide generation rate and the nitrogen oxide generation concentration.

Description

[0001] Citations to related applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2015-0176344 filed with the Korean Intellectual Property Office on December 10, 2015, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to an apparatus and method for predicting the amount of NOx produced by a compression ignition engine, and more particularly, relates to the use of driving variables and Apparatus and method for more accurate real-time prediction of NOx production based on combustion pressure. Background technique [0004] As emission regulations for vehicles with internal combustion engines become more stringent, there is a need to reduce emissions during operation of the internal combustion engines. One developed method for reducing emissions involves reducing the emissions generated in each cylinder of an internal combustion engine during the combustion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/14
CPCF02D41/1462F02D41/1458F02D41/402F02D41/403F02D41/405F02D35/026F02D2041/1412F02D41/0072G01N33/0037Y02A50/20Y02T10/40F01N11/007F02D41/0235F02D41/1454F02D2200/0614F02D2200/0618F02D2200/101
Inventor 韩景灿李俊镛俞濬李庚敏闵庚德李昇河金奎珍李永福
Owner HYUNDAI MOTOR CO LTD