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Engine system with exhaust gas recirculation

An engine system and exhaust gas recirculation technology, applied in the direction of exhaust gas recirculation, charging system, combustion engine, etc., can solve problems such as difficulty in improving vehicle fuel efficiency, failure to advance ignition timing, and decline in EGR control accuracy

Inactive Publication Date: 2020-10-20
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when such a differential pressure generating valve is installed, there arises a problem that the production cost of the vehicle increases
[0011] In addition, a differential pressure sensor that detects the pressure difference between the front end and rear end of the EGR valve that adjusts the amount of recirculation gas is provided, and since the pressure difference between the front end and rear end of the EGR valve is small in the low speed / low load region , the accuracy of EGR control decreases
[0012] Therefore, since the accurate recirculated exhaust gas amount cannot be adjusted, the combustion stability cannot be ensured, and thus the ignition timing cannot be advanced, and there arises a problem that it is difficult to improve the fuel efficiency of the vehicle

Method used

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  • Engine system with exhaust gas recirculation
  • Engine system with exhaust gas recirculation
  • Engine system with exhaust gas recirculation

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Embodiment Construction

[0037] The present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present disclosure.

[0038] The drawings and descriptions are to be regarded as illustrative in nature and not restrictive. Like reference numbers refer to like elements throughout the specification.

[0039] Further, in the drawings, the size and thickness of each element are randomly represented for better understanding and ease of description, and the present disclosure is not limited thereto, and the thicknesses of several parts and regions are exaggerated for clarity.

[0040] An engine system having an exhaust gas recirculation (EGR) device according to an exemplary embodiment of the present disclosure will be described in detail belo...

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Abstract

The present invention relates to an engine system having an exhaust gas recirculation (EGR) device, comprising: an engine including a plurality of combustion chambers; an intake line through which intake air supplied to the plurality of combustion chambers flows; an exhaust line from Exhaust gas from the plurality of combustion chambers flows through the exhaust line; and a turbocharger including: a turbine disposed on the exhaust line and rotated by the exhaust gas; and a compressor disposed on the intake line and rotated And compress the outside air. The EGR device includes: a recirculation pipeline, branched from the exhaust pipeline; an EGR valve, arranged in the recirculation pipeline, and adjusting the amount of recirculation gas; a pressure sensor, arranged in the front end of the EGR valve of the recirculation pipeline, to Measuring the pressure of the recirculation gas; and a flow regulating device, which is arranged at the rear end of the EGR valve of the recirculation pipeline, and regulates the amount of the recirculation gas.

Description

technical field [0001] The present disclosure relates to engine systems having exhaust gas recirculation (EGR) devices. More particularly, the present disclosure relates to engine systems having an EGR device capable of accurately measuring and controlling the flow of recirculated air. Background technique [0002] The vehicle engine generates power by mixing and burning air flowing in from the outside with fuel at an appropriate ratio. [0003] In generating power by driving the engine, for combustion, desired output and combustion efficiency can be obtained only when external air is sufficiently supplied. For this reason, in order to improve the fuel efficiency of the engine, as a device that pressurizes and supplies air for combustion, a turbocharger is used. [0004] In general, a turbocharger is a device that rotates a turbine using the pressure of exhaust gas discharged from the engine and increases the output of the engine by supplying high-force air to a combustion...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M26/06F02M26/34F02M26/47F02D21/08
CPCF02D21/08F02D2021/083F02D41/0072F02D41/0077F02D41/1448F02D2041/0075F02D2200/0406F02M26/04F02M26/33F02M26/47F02M26/52Y02T10/40F02D41/0047F02M26/06F02M26/09F02M26/70F02D41/021F02D2200/701
Inventor 崔秋生
Owner HYUNDAI MOTOR CO LTD
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