A method for determining at least one adaptation value of exhaust gas recirculation rate

A technology of exhaust gas recirculation rate and exhaust gas recirculation, which is applied in the direction of exhaust gas recirculation, electrical control, machine/engine, etc.

Active Publication Date: 2021-01-08
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the accuracy can be affected by long-term effects of the internal combustion engine's operation, e.g. by soot accumulation in the cooling unit, failure of the pressure sensor, etc.

Method used

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  • A method for determining at least one adaptation value of exhaust gas recirculation rate
  • A method for determining at least one adaptation value of exhaust gas recirculation rate
  • A method for determining at least one adaptation value of exhaust gas recirculation rate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0084] figure 1 Motor vehicle 19 with internal combustion engine 1 and control device 20 is shown.

[0085] Internal combustion engine 1 has an external low-pressure exhaust gas recirculation device 2 and a plurality of cylinders 3 with an input side 4 and an output side 5 . Arranged on the intake side 4 is an air supply line 6 with a raw air inlet 7 and a filter arranged on the raw air inlet 7 , a raw air valve 26 and a second regulating valve 8 . Arranged on the outlet side 5 is an exhaust gas line 9 and an exhaust gas recirculation line 10 , which connects the exhaust gas line 9 upstream of the second control valve 8 and downstream of the raw air valve 26 with the air supply line 6 . During operation of the internal combustion engine 1 , the recirculated EGR exhaust gas mass flow is regulated via a first regulating valve 11 arranged in the exhaust gas recirculation line 10 12 and adjust the raw air mass flow through the second regulating valve 8 13 or total mass flow o...

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PUM

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Abstract

The invention relates to a method for determining one or more adaptation values of an exhaust gas recirculation rate rEGR, during operation of an internal combustion engine (1); wherein the internal combustion engine (1) has at least one cylinder (3) with an input side (4) and an output side (5), an air inlet line (6) with a raw air inlet (7) is provided on the inlet side (4), wherein an exhaust gas line (9) and an exhaust gas recirculation line (10) connecting the exhaust gas line (9) to the air inlet line (6) are provided on the outlet side (5), recirculated EGR-exhaust gas mass flow shown in the specification at least through a first adjusting valve (11) arranged in an exhaust gas recirculation line (9).

Description

technical field [0001] The invention relates to a method for determining (or adjusting) at least one adaptation value for the exhaust gas recirculation rate (or for determining the exhaust gas recirculation (EGR) rate r EGR one or more fitness values) method. [0002] An internal combustion engine having at least one cylinder with an input side and an output side for discharging combustion gases from the cylinder into the exhaust gas line and an external low-pressure (or high-pressure) exhaust gas recirculation device, in which internal combustion engine The external exhaust gas recirculation device comprises at least one exhaust gas recirculation line which connects the exhaust gas line to the air supply line of the internal combustion engine. A (first) control valve is provided in the exhaust gas recirculation line, by means of which the mass flow of exhaust gas from the exhaust gas line can be recycled back into the air supply line in a controlled manner. A cooling device...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/00F02D41/18F02D21/08
CPCF02D41/005F02D41/0072F02D41/0077F02D41/18F02D21/08F02D2041/0075F02D2021/083F02D41/2451F02M26/06F02D2200/0402F02M26/05F02M26/47F02M26/35F02M26/49Y02T10/40
Inventor A.尼霍夫M.马祖尔W.戈特沙尔克S.贝伦特R.格拉鲍斯基
Owner VOLKSWAGEN AG
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