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Exhaust gas recovery apparatus of egr cooler for vehicle

A technology of exhaust gas and recovery device, applied in exhaust device, muffler device, electrical control, etc., can solve problems such as use restriction, blockage of injector nozzle hole, neglect of exhaust heat recovery, etc.

Inactive Publication Date: 2015-06-24
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Therefore, because the exhaust gas recirculation device is only used for the purpose of reducing nitrogen oxides by lowering the combustion temperature of the engine, while ignoring that the exhaust heat can be effectively recovered, when it is actually necessary to recover the exhaust heat in winter or at low load When EGR is over-produced under conditions, the maximum pressure (PM) increases and the nozzle hole of the injector becomes clogged, which limits its use

Method used

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  • Exhaust gas recovery apparatus of egr cooler for vehicle
  • Exhaust gas recovery apparatus of egr cooler for vehicle
  • Exhaust gas recovery apparatus of egr cooler for vehicle

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Embodiment Construction

[0035] Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention has been described in conjunction with exemplary embodiments, it will be understood that present description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only the exemplary embodiments, but also alterations, modifications, equivalents and other embodiments as included within the spirit and scope of the invention as defined by the claims.

[0036]The present invention is suitable for recovering the exhaust gas of an EGR cooler in an engine system including a multi-step turbocharger, and is aimed at idling conditions in which EGR is not used, in low-load operating conditions in which the frequency of EGR is low or Improves fuel ratio and engine operability during winter conditions by reducing the amount of exhaus...

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Abstract

Disclosed is an exhaust gas recovery apparatus of an EGR cooler for a vehicle that circulates some of exhaust gases cooled by an EGR cooler to be discharged, not to an engine but to the outside in a low load operation condition or in a winter season condition, and thus maintaining a temperature of engine cooling water high. The apparatus may include a branch pipe for transferring exhaust gases discharged from the EGR cooler to a turbo charger, a flow rate control valve installed in the branch pipe for adjusting a flow rate of the exhaust gases, and a control unit for controlling an opening degree of the flow rate control valve.

Description

technical field [0001] The present invention relates to an exhaust gas recovery device for an exhaust gas recirculation (EGR) cooler of a vehicle, by which some of the exhaust gas in the EGR cooler mounted to the vehicle is recovered to be discharged to the outside, and more Specifically, it relates to an exhaust gas recovery device for an EGR cooler of a vehicle that does not circulate some of the exhaust gas cooled by the EGR cooler to be discharged to the engine under low-load operating conditions or winter conditions Instead, it circulates to the outside, thus keeping the engine cooling water at a high temperature. Background technique [0002] Exhaust gases from vehicles contain toxic substances such as carbon monoxide (CO), nitrogen oxides (NOx) and hydrocarbons (HC). Among the substances produced during combustion, nitrogen oxides have the same Hydrogen compounds have the opposite relationship. [0003] That is to say, in the practical output range, the greatest amo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M25/07F02D21/08
CPCF02D41/0065F02D41/0007F01N13/08F02B37/004F02B37/013F02M26/07F02M26/43F02M26/08Y02T10/40
Inventor 丁逸
Owner HYUNDAI MOTOR CO LTD