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Method for operating an exhaust-gas recirculation device

An exhaust gas recirculation and exhaust gas technology, which is applied in exhaust gas recirculation, charging system, machine/engine, etc., can solve problems such as inability to scale and adjust, and achieve the effect of reducing NOx and particle emissions

Inactive Publication Date: 2010-02-24
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Throttleable intake air consists of fresh air and possibly exhaust air mixed in the fresh air, the ratio of fresh air and exhaust air in the fresh air-exhaust air mixture cannot be adjusted by means of the throttle valve

Method used

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  • Method for operating an exhaust-gas recirculation device
  • Method for operating an exhaust-gas recirculation device
  • Method for operating an exhaust-gas recirculation device

Examples

Experimental program
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Embodiment Construction

[0030] figure 1 An exhaust gas recirculation device 1 is shown for an internal combustion engine 3 designed as a passenger car diesel engine with an exhaust gas turbocharger 2 . Furthermore, internal combustion engine 3 has four cylinders 4 , which each have an intake valve 5 for intake air and an exhaust valve 6 for exhaust gas to be discharged. The intake air flow into the cylinder 4 is indicated by the arrow 7 . Correspondingly, the exhaust gas flow from said cylinder 4 is indicated by arrow 8 . Exhausted exhaust gases that flow out through the exhaust valve 6 merge into an exhaust manifold 9 of the internal combustion engine 3 . The air to be fed into the intake valves 5 is fanned out in the intake manifold 10 for distribution to the individual intake valves 5 .

[0031] The intake manifold 10 is connected to the intake valves 5 by means of corresponding intake ports 11 and the exhaust manifold 9 is connected to the exhaust valves 6 by means of corresponding exhaust por...

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PUM

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Abstract

The invention relates to an exhaust-gas recirculation device (1) for an internal combustion engine (3), in particular a diesel motor for a passenger car. Said device comprises an air-supply conduit (13) that is connected to an air intake (11) of the internal combustion engine (3) and an exhaust-gas conduit (14) that is connected to the exhaust-gas outlet (12) of the internal combustion engine (3).A turbine (17) that drives a compressor (20), which is positioned in the air supply conduit (13), is located in the exhaust-gas conduit (14) and the latter (14) is connected to the air-supply conduit(13) by means of an exhaust-gas recirculation conduit (15) that branches off behind the turbine (17) in the flow direction. The aim of the invention is to achieve higher exhaust-gas recirculation rates. To achieve this, an adjustable restrictor (24) is located in the air-supply conduit (13) upstream of the compressor (20) in the flow direction. The invention also relates to a method for operatingan exhaust-gas recirculation device for an internal combustion engine.

Description

technical field [0001] The invention relates to a method for operating an exhaust gas recirculation device for an internal combustion engine, in particular for a passenger car diesel engine, which has an intake line connected to the intake of the internal combustion engine and has an exhaust gas connection to the internal combustion engine. A port-connected exhaust line, wherein a turbine is arranged in the exhaust line, which drives a compressor arranged in the intake line, and wherein the exhaust line passes through the An exhaust gas recirculation line branching off downstream of the turbine is connected to the intake line, wherein exhaust gas can flow back from the exhaust port to the intake air via the exhaust gas recirculation line during operation of the internal combustion engine In the mouth, and wherein the exhaust gas recirculation line is opened not only in the low load range of the internal combustion engine, but also in the full load range, in order to achieve a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M25/07F02B47/08
CPCF02M25/0713F02B47/08F02M25/0709Y02T10/121F02M25/0727F02B29/0418F02M25/0718F02M26/06F02M26/10F02M26/15F02M26/23Y02T10/12
Inventor A·弗勒塔格J·穆勒L·尼W·阿伯勒A·格罗恩迪耶克
Owner VOLKSWAGEN AG