DPF A METHOD FOR PREVENTING BREAKAGE DURING UNCONTROLLED BURNING USING A METHOD FOR ANALYZING DRIVING PATTERN OF VEHICLE

• Main Authors: KIM, JIN HA, PYO, SOON CHAN
• Format: Patent
• Language: English; Korean
• Published: 10.05.2017
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

The present invention relates to a method for preventing breakage of a diesel particulate filter (DPF) during uncontrolled burning using a vehicle driving pattern analysis method. According to the present invention, the method for preventing breakage of a DPF during uncontrolled burning using the vehicle driving pattern analysis method comprises: a step of calculating weighting factors according to vehicle driving patterns (S10); a step of determining whether a DPF regeneration mode is currently being operated (S20); a step of setting an uncontrolled burning region in a table of the weighting factors, when the DPF regeneration mode is currently being operated (S30); a step of determining whether a sum (K) of the weighting factors in the uncontrolled burning region is greater than or equal to a predetermined first reference value (S40); a step of determining whether the amount of soot deposited in the DPF is greater than or equal to a predetermined second reference value, when the sum (K) of the weighting factors in the uncontrolled burning region is greater than or equal to the predetermined first reference value (S50); and a step of controlling the DPF regeneration temperature to a preset temperature when the amount of the soot deposited in the DPF is greater than or equal to the predetermined second reference value (S60). According to the present invention, data in which engine driving states are digitized can be obtained by analyzing the vehicle driving patterns. Moreover, the present invention can be used to improve the control stability of the DPF and prevent breakage of the DPF. 본 발명은 차량의 주행패턴 분석방법을 이용한 비정상 재생시 DPF 파손방지방법에 관한 것이다. 본 발명에 따른 차량의 주행패턴 분석방법을 이용한 비정상 재생시 DPF 파손방지방법은 차량 주행패턴에 따른 가중치 요소를 산출하는 단계(S10); 현재 DPF 재생모드 수행중인지 여부를 판단하는 단계(S20); 현재 DPF 재생모드 수행중인 경우에는, 상기 가중치 요소의 테이블에서 비정상 재생(Uncontrolled Burning)영역을 설정하는 단계(S30); 상기 비정상 재생영역 내부의 가중치 요소의 합(K)이 기설정된 제 1 기준값 이상인지 판단하는 단계(S40); 상기 비정상 재생영역 내부의 가중치 요소의 합(K)이 기설정된 제 1 기준값 이상인 경우에는, DPF에 퇴적된 매연량(SOOT)이 기설정된 제 2 기준값 이상인지 판단하는 단계(S50); 및 DPF에 퇴적된 매연량(SOOT)이 기설정된 제 2 기준값 이상인 경우에는, DPF 재생온도를 기설정된 온도로 제어하는 단계(S60);를 포함한다. 본 발명에 따르면, 차량의 주행패턴을 분석하여, 이에 따른 엔진 운전 상태를 수치화한 데이터를 취득할 수 있다. 또한, 이를 이용하여 DPF의 제어 안정성을 향상시키며, DPF의 파손을 방지할 수 있다.