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Apparatus and method for controlling exhaust gas recirculation

一种排放气体、再循环的技术，应用在废气再循环、电气控制、发动机控制等方向，能够解决发动机构造复杂、产品成本增加等问题

Inactive Publication Date: 2013-10-23
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] As described above, when a separate sensor is installed to measure the amount of EGR gas recirculated to the intake manifold, since an additional component is used, the engine configuration becomes complicated and the product cost increases

Method used

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  • Apparatus and method for controlling exhaust gas recirculation
  • Apparatus and method for controlling exhaust gas recirculation
  • Apparatus and method for controlling exhaust gas recirculation

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Embodiment Construction

[0031] The various embodiments of the present invention will be referenced in detail below, and examples of these embodiments are shown in the drawings and described below. Although the present invention will be described in conjunction with exemplary embodiments, it should be appreciated that this specification is not intended to limit the present invention to those exemplary embodiments. On the contrary, the present invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents, and other forms that can be included in the spirit and scope of the present invention as defined by the appended claims. implementation plan.

[0032] Throughout the specification, the same reference numerals denote the same elements.

[0033] In this specification and the following claims, when it is described that an element is "connected" to another element, the element can be "directly coupled" to the other element, or "electrically coup...

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Abstract

An exhaust gas recirculation control apparatus includes: an EGR valve adjusting a flow rate of EGR gas recirculated from an exhaust manifold to an intake manifold; a manifold absolute pressure (MAP) sensor measuring pressure inside the intake manifold; a throttle valve controlling the amount of inflow air; an igniter spraying fuel; an acceleration pedal angular position sensor; a crank position sensor measuring engine RPM; a vehicle speed sensor measuring a speed of a vehicle; and a control portion receiving a pressure signal from the MAP sensor, calculating a ratio of the EGR gas for a total volume of the intake manifold by using pressure variance inside the intake manifold, calculating pressure of the EGR gas by multiplying the pressure of the intake manifold and the ratio of the EGR gas, and converting the pressure of the EGR gas to a flow rate of the EGR gas.

Description

[0001] Cross references to related applications [0002] This application claims priority from Korean Patent Application No. 10-2012-0031163 filed on March 27, 2012, the entire content of which is incorporated herein for all purposes of this citation. Technical field [0003] The present invention relates to an exhaust gas recirculation control device and an exhaust gas recirculation control method, and more particularly to an exhaust gas recirculation control device and an exhaust gas recirculation control method using a manifold absolute pressure (MAP) sensor. Background technique [0004] Engine exhaust gas contains a lot of toxic components, such as CO, HC and NOx (nitrogen compounds). In particular, when the combustion temperature of the engine increases, the amount of NOx produced increases, so it is necessary to lower the combustion temperature of the engine to reduce the amount of NOx contained in the exhaust gas. [0005] Among the reasons for increasing the combustion tempe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M25/07F02D21/08
CPCF02D2200/501F02D2200/0414F02M25/0753F02D41/0072F02B47/08F02D2200/0406F02D2200/0402F02D2200/602Y02T10/47Y02T10/121F02D2041/007F02D21/08F02M26/45Y02T10/40
Inventor 金承范朴正男
Owner HYUNDAI MOTOR CO LTD
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