KR970065984A

KR970065984A - Catalytic air supply device of gasoline automobile and control method thereof

Info

Publication number: KR970065984A
Application number: KR1019960006524A
Authority: KR
Inventors: 정규신
Original assignee: 한승준; 기아자동차 주식회사
Priority date: 1996-03-12
Filing date: 1996-03-12
Publication date: 1997-10-13

Abstract

본 발명은 배기가스의 온도가 저온일 경우 배기관에 공기를 공급하여 배기가스와 촉매와의 반응을 원활히 함과 동시에 이를 통해 촉매 온도를 상승시켜 배기가스 정화능력을 향상시키도록 하는 가솔린 자동차의 촉매에어 공급장치 및 그 제어방법에 관한 것으로, 배기관에 에어를 공급하기 위해 관로와 연통되어 설치된 에어공급수단과, 냉각수온을 감지하는 냉각수온감지수단과, 엔진 시동상태를 검출하는 엔진시동검출수단과, 상기 냉각수온감지수단에 의해 감지된 냉각수 온도를 통해 냉기시동과 난기시동을 판정한 후 냉기시동일 경우와 난기시동일 경우에 소정의 시간동안 에어공급수단을 통해 에어를 공급하기 위한 제어신호를 출력하는 마이컴과, 상기 마이컴에서 소정의 제어신호가 출력되면 전원이 인가되면서 에어공급수단에 전원을 공급하는 스위칭수단으로 구성되며; 상기 마이컴은 엔진의 시동 상태를 검출하는 시동검출단계와; 시동이 걸린상태에서 외기온도를 검출하여 외기온도에 따른 기준온도값을 설정하는 기준온도설정단계와; 외기온도에 따라 기준값이 결정되면 냉각수 온도를 검출하여 기준값과 비교한 후 냉각수온이 기준값보다 낮을 경우 냉기시동으로 판단하고, 냉각수온이 기준값보다 높을 경우 난기시동으로 판단하는 냉각수온 비교단계와; 냉각수온을 비교하여 냉기시동과 난기시동을 판단되면 이에 해당하는 설정된 시간동안 에어공급수단을 통해 배기관에 에어를 공급하기 위한 제어신호를 출력하는 전원공급제어단계를 수행한다.The present invention relates to an exhaust gas purifying catalyst for purifying exhaust gas from a gasoline engine which is capable of enhancing exhaust gas purifying capability by raising the temperature of a catalyst through the exhaust gas to facilitate the reaction between the exhaust gas and the catalyst by supplying air to the exhaust pipe when the temperature of the exhaust gas is low. The present invention relates to a supply apparatus and a control method thereof, and more particularly, to a supply apparatus and a control method thereof, which are provided with an air supply means provided in communication with a duct for supplying air to an exhaust pipe, cooling water temperature sensing means for sensing cooling water ON, A cold start and a warm start are determined through the cooling water temperature sensed by the coolant temperature sensing means and then a control signal for supplying air through the air supply means for a predetermined time is output A microcomputer for supplying power to the air supply means when a predetermined control signal is output from the microcomputer, It is composed of a switching means; The microcomputer includes: a startup detecting step of detecting a starting state of the engine; A reference temperature setting step of setting a reference temperature value according to an outside air temperature by detecting an outside air temperature in a state in which startup is performed; A coolant temperature comparison step of comparing the coolant temperature with a reference value when the reference value is determined according to the outside temperature, determining a cold start if the coolant temperature is lower than the reference value, and a warm start if the coolant temperature is higher than the reference value; Cooling water temperature is compared to determine a cold start and a warm start, a power supply control step of outputting a control signal for supplying air to the exhaust pipe through the air supply means for a predetermined time period is performed.

Description

Catalytic air supply device of gasoline automobile and control method thereof

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 일반적인 배기장치를 보인 사시도, 제2도는 본 발명의 에어공급수단의 설치예를 보인 정면도, 제3도는 본 발명의 에어공급수단 제어장치를 보인 블럭회로도, 제4도는 본 발명을 에어공급 제어방법을 설명하기 위한 플로우챠트도.FIG. 2 is a front view showing an example of the installation of the air supply means of the present invention, FIG. 3 is a block circuit diagram showing the air supply means control apparatus of the present invention, FIG. Fig. 2 is a flowchart for explaining a supply control method. Fig.

Claims

An engine starting detecting means for detecting an engine starting state; a cooling water detecting means for detecting an engine starting state; a cooling water detecting means for detecting an engine starting state; A microcomputer for outputting a control signal for supplying air through the air supply means for a predetermined period of time when the cold start and the warm start are determined through the temperature, And a switching means for supplying power to the air supply means while the power is being supplied when the signal is outputted.

1. A catalytic air supply apparatus comprising an engine start detecting means, a coolant temperature detecting sensor, an air supply fan, and a micom, the microcomputer comprising: a start detecting step of detecting a start state of the engine; A reference temperature setting step of setting a reference temperature value according to an outside air temperature by detecting an outside air temperature in a state in which startup is performed; A coolant temperature comparison step of comparing the coolant temperature with a reference value when the reference value is determined according to the outside temperature, determining a cold start if the coolant temperature is lower than the reference value, and determining a warm start if the coolant temperature is higher than the reference value; And a control unit for controlling the supply of air to the exhaust pipe through the air supply unit during a predetermined period of time when the cold start and the warm start are determined by comparing the cooling water temperature and the cooling water temperature, Air supply control method.

※ Note: It is disclosed by the contents of the first application.