公开(公告)号：KR1020130134175A

公开(公告)日：2013-12-10

申请号：KR1020120057495

申请日：2012-05-30

Applicant: 현대자동차주식회사

Inventor： 이강성 ,  김형식 ,  박성호

IPC: F02D21/08 ,  F02M25/07

CPC classification number: Y02T10/121 ,  F02D41/0072 ,  F02D41/0052 ,  F02M26/07

Abstract: An apparatus and a method for controlling model-based EGR system are disclosed. The model-based EGR system estimates the amount of target air by reducing the flow rate of HP EGR corresponding to the flow rate of LP EGR when the LP EGR is supplied in an operating condition for controlling only the flow rate of HP EGR. The invention comprises a step of: (1) whether or not the occurrence of the transition of the operating condition is determined in an idle stop state that the flow amount of the HP EGR is only controlled in a vehicle with the EGR system; (2) determining the LP EGR duty according to the operating variables and considering the LP EGR is supplied when the transition of the operating condition occurs; (3) determining the HP EGR duty by determining the reduction amount of the HP EGR based on the inflow rate of the LP EGR; and (4) supplying the LP EGR based on the LP EGR duty and estimating the inflow rate of air by reducing the HP EGR based on the HP EGR duty to maintain the inflow rate of the EGR. [Reference numerals] (AA) Start;(BB) No;(CC) Yes;(DD) End;(S101) Idle operation state;(S102) Determining the amount of EGR based on a model;(S103) Controlling high pressure EGR;(S104) Start or stop?;(S105) Determining the inflow of low pressure EGR;(S106) Calculating high pressure EGR valve duty according to low pressure EGR valve;(S107) Opening a low pressure EGR valve and controlling for a high pressure EGR valve;(S108) Estimating the target air amount

Abstract translation: 公开了一种用于控制基于模型的EGR系统的装置和方法。 基于模型的EGR系统通过在仅仅控制HP EGR的流量的操作条件下提供LP EGR时，通过降低对应于LP EGR的流量的HP EGR的流量来估计目标空气的量。 本发明包括以下步骤：（1）在怠速停止状态下，是否仅在具有EGR系统的车辆中控制HP EGR的流量，判定是否发生了运转状态的转移; （2）根据运行变量确定LP EGR占空比，并考虑在运行条件的转变发生时提供LP EGR; （3）基于LP EGR的流入速率确定HP EGR的减少量来确定HP EGR占空比; 和（4）基于LP EGR负载提供LP EGR，并且通过基于HP EGR负载来降低HP EGR来估计空气的流入速率，以维持EGR的流入速率。 （NC）开始;（BB）否;（CC）是;（DD）结束;（S101）空转动作状态;（S102）基于模型确定EGR量;（S103）控制高压 EGR（S104）开始或停止？（S105）确定低压EGR的流入;（S106）根据低压EGR阀计算高压EGR阀的占空比（S107）打开低压EGR阀并控制 高压EGR阀;（S108）估计目标空气量

公开(公告)号：KR1020090064138A

公开(公告)日：2009-06-18

申请号：KR1020070131710

申请日：2007-12-15

Applicant: 현대자동차주식회사 ,  기아자동차주식회사

Inventor： 이강성

IPC: F02B37/22 ,  F02B37/12 ,  F02B39/16 ,  F02D23/00

CPC classification number: Y02T10/144 ,  F02B37/22 ,  F02B39/16 ,  F02D23/00 ,  F05B2220/40 ,  F05D2220/40

Abstract: A control method of a VGT is provided to prevent the damage of a VGT at low speed and to maintain the power performance of a vehicle at high speed by setting up the target base boost pressure low at low speed and setting up the target boost pressure separately at high speed. A control method of a VGT(variable geometry turbocharger) comprises the steps of having two or more target base boost maps and setting up the assigned target base boost map according to the gear position assigned to an ECU, and setting up the target base boost pressure of the target base boost map for low speed to be relatively lower than the target base boost pressure of the target base boost map for high speed.

Abstract translation: 提供VGT的控制方法，以防止VGT在低速下的损坏，并且通过将目标基础升压压力设定在低速下并且分别设定目标增压压力来保持高速的动力性能 高速 VGT（可变几何形状涡轮增压器）的控制方法包括以下步骤：根据分配给ECU的齿轮位置，具有两个以上的目标基准升压图，并设定分配的目标基准升压图，并且设定目标基准升压压力 的低速的目标基础升压图相对于目标基础升压图的目标基础升压压力相对低的高速。