公开(公告)号：KR1020100064925A

公开(公告)日：2010-06-15

申请号：KR1020080123577

申请日：2008-12-05

Applicant: 현대자동차주식회사

Inventor： 목종수 ,  최무영

IPC: F01N3/28 ,  F01N9/00

CPC classification number: Y02A50/2322 ,  Y02T10/47 ,  F01N3/20 ,  F01N9/00 ,  F01N2430/06

Abstract: PURPOSE: A method for controlling catalyst activation during cold start of a vehicle is provided to achieve rapid activation of CCC and UCC by releasing lean combustion control for CCC activation and carrying out rich combustion control for UCC activation after CCC reaches the activation temperature. CONSTITUTION: A method for controlling catalyst activation during cold start of a vehicle comprises the steps of: inducing CCC(Close-Coupled Catalyst) activation through spark retard control and lean combustion of air-fuel ratio after on of cold start(S101~S105), inducing UCC(Underfloor Coupled Catalyst) activation through rich combustion of air-fuel ratio after completion of CCC activation(S107,S109), and carrying out theoretical air-fuel ratio control after completion of UCC activation(S110,S111).

Abstract translation: 目的：提供一种控制车辆冷起动过程中催化剂活化的方法，通过释放CCC活化的稀释燃烧控制，并在CCC达到活化温度后对UCC活化进行丰富的燃烧控制，实现CCC和UCC的快速活化。 构成：用于控制车辆冷启动时催化剂活化的方法包括以下步骤：通过火花延迟控制引起CCC（紧密耦合的催化剂）活化和冷启动之后空燃比的稀燃（S101〜S105） ，在CCC激活完成之后通过空燃比的丰富燃烧诱导UCC（地板下耦合催化剂）活化（S107，S109），并在UCC激活完成后执行理论空燃比控制（S110，S111）。