Abstract:
Disclosed is a regeneration method of an exhaust purification device for a vehicle capable of unitarily controlling the regeneration of a diesel particulate filter (DPF) for collecting particulate matters (PM), such as soot, contained in exhaust gas and the desulfurization of a lean NOx trap (LNT) for occluding nitrogen oxide (NOx). The regeneration method of the exhaust purification device for a vehicle in which a lean burn engine is applied and the LNT and the DPF are mounted on an exhaust manifold comprises: a step of determining whether or not vehicle information satisfies the regeneration conditions of the DPF; a step of regenerating the particulate matters till a set reference amount by increasing the temperature of the exhaust gas when the regeneration conditions of the DPF are satisfied; a step of maintaining the temperature of the LNT within a set reference temperature range when the regeneration of the DPF is reached to the set reference amount; a step of regenerating the DPF to remove the particulate matters which are not removed from the DPF during a lean burn process and desulfurizing the LNT in a rich burn process by repeatedly controlling the engine using the lean burn process and the rich burn process; and a step of controlling the engine with a normal burn process when the desulfurization of the LNT and the regeneration of the DPF are completed. [Reference numerals] (AA) Start; (BB,DD,FF) NO; (CC,EE,GG) YES; (HH) End; (S101) Detect vehicle information; (S102) Is it the regeneration conditions of a DPF?; (S103) Control the regeneration of the DPF; (S104) Monitor the regenerated state; (S105) Is it reached to the a set reference amount?; (S106) Maintain a LNT at a set temperature; (S107) Repeatedly control a lean burn process and a rich burn process; (S108) Simultaneously control the regeneration of the DPF and the desulfurization of the LNT; (S109) Is the regeneration of the DPF and the desulfurization of the LNT completed?; (S110) Normal control
Abstract:
본 발명의 실시예에 따른 배기가스 후처리 방법은, 디젤매연필터의 정상적인 재생을 수행하는 단계, 상기 정상적인 재생이 수행되는 시작점으로부터 시간을 누적하는 단계, 엔진의 설정된 조건에 따라서 상기 디젤매연필터의 비정상재생 진입조건을 판단하는 단계, 및 상기 비정상재생 진입조건이 만족된 상태에서, 상기 누적된 시간이 설정된 시간 이내이면, 상기 디젤매연필터의 비정상재생 로직에 따라 재생을 수행하고, 상기 누적된 시간이 설정된 시간을 벗어나면, 상기 디젤매연필터의 정상재생 로직에 따라 재생을 수행하는 단계를 포함한다. 따라서, 디젤매연필터가 재생된 시점으로부터 경과시간이 일정시간을 초과하면, 차량이 아이들상태로 진입하거나 오버런 상태로 진입하더라도, 불필요한 비정상 재생 로직을 수행하지 않음으로써, 연료소모를 줄이고, 디젤매연필터를 안정적으로 재생한다.
Abstract:
본 발명은 질소 산화물 저감 촉매가 구비된 배기 가스 정화장치에서 질소 산화물 저감 촉매에 피독된 황을 제거함으로써 질소 산화물 저감 촉매의 정화 성능을 회복시키는 내연 기관의 배기 가스 정화 장치 및 이의 탈황 방법에 관한 것이다. 본 발명의 실시예에 따른 내연 기관의 배기 가스 정화 장치는 연소실 내에 연료를 분사하는 제1인젝터를 가지는 내연 기관에서 발생된 배기 가스가 흘러가는 배기 파이프; 상기 배기 파이프에 장착되어 연료를 추가 분사하는 제2인젝터; 상기 제2인젝터의 후단 배기 파이프에 장착되어 배기 가스에 포함된 입자상 물질을 걸러주는 매연 필터; 상기 매연 필터 후단에 장착되어 배기 가스에 포함된 질소산화물을 저감시키는 질소 산화물 저감 촉매; 그리고 상기 매연 필터 재생 중, 탈황 진입 조건과 탈황 조건을 모두 만족하는 경우 질소 산화물 저감 촉매의 탈황을 진행하는 제어부;를 포함할 수 있다. 후분사, 추가 분사, 질소 산화물 저감 촉매, 매연 필터, 탈황
Abstract:
PURPOSE: An exhaust-gas purifying device of an internal combustion engine and a de-sulfurization method for the same are provided to shorten de-sulfurization hours and enhance fuel efficiency by de-sulfurizing nitrogen-oxide reducing catalyst if a de-sulfurization entry condition and a de-sulfurization condition are satisfied. CONSTITUTION: An exhaust-gas purifying device of an internal combustion engine comprises an exhaust pipe, a second injector, a fume filter, nitrogen-oxide reducing catalyst and a control unit. The exhaust pipe discharges exhaust gas from an internal combustion engine having a first injector. The first injector sprays fuel from a combustion chamber. The second injector is mounted on the exhaust pipe and further sprays fuel. The fume filter is mounted on the exhaust pipe of the rear end of the second injector. The fume filter filters particulate matters from the exhaust gas. The nitrogen-oxide reducing catalyst is mounted on the exhaust pipe of the rear end of the fume filter.
Abstract:
A control method of a variable acceleration pedal is provided to improve the driving stability of the acceleration pedal in case a drive road is uneven by increasing hysteresis. A controlling method of a variable acceleration pedal comprises: a step(S10) determining whether the change of steering angle is sensed or not; a step determining whether the change of the steering angle is generated due to the will of the driver or not by using signals about steering; a step(S50) determining whether a road is uneven or not by using signals about transmission and car speed; a step(S60) determining control hysteresis according to the state of the driving road; and a step(S70) calculating the software hysteresis applying and the determined control hysteresis.
Abstract:
A method for variably controlling an alternator of a vehicle is provided to reduce a load applied an engine by a charging amount in an acceleration mode requiring driving force of the vehicle. A method for variably controlling an alternator of a vehicle includes the steps of: determining whether or not a charging state of a vehicle battery is equal to or more than a predetermined ratio(S200); driving the vehicle in static voltage control if the charging state of the vehicle battery is equal to or more than the predetermined ratio(S300) and driving the vehicle in static current control if not(S400); determining whether or not a driving time of the vehicle is equal to or more than a predetermined time, and accumulated current values are larger than 0 or the charging state of the battery is equal to or more than the predetermined ratio(S600); lowering a set condition of a throttle position sensor by a predetermined ratio and setting the accumulated current values to 0 if the driving time condition is satisfied and the current accumulation value condition or the battery charging state condition is satisfied(S700), and determining whether or not the driving time of the vehicle is equal to or more than the predetermined time(S800); determining whether or not the accumulated current values are less than 0 and the battery charging state is less than the predetermined ratio if the driving time of the vehicle is equal to or more than the predetermined time(S900); and increasing the set condition of the throttle position sensor by the predetermined ratio if the accumulated current values are less than 0 and the battery charging state is less than the predetermined ratio(S1100) and maintaining the set condition of the throttle position sensor if not(S1000).