公开(公告)号：KR100427269B1

公开(公告)日：2004-04-14

申请号：KR1020010079211

申请日：2001-12-14

Applicant: 현대자동차주식회사

Inventor： 김윤수

IPC: F02D45/00

Abstract: PURPOSE: A method for deciding the failure of an air-fuel ratio feedback control system is provided to prevent the wrong decision of the failure of a fuel system and the increment of exhaust gas by additively changing the output voltage of an oxygen sensor. CONSTITUTION: A method for deciding the failure of an air-fuel ratio feedback control system comprises the steps of checking the temperature of cooling water and intake air, engine rpm, and charge efficiency(210), checking if the temperature of cooling water is higher than a specific temperature and the temperature of intake air is within a specific range(230), deciding if the engine rpm and the charge efficiency are within specific ranges(250,260), deciding if the temperature of cooling water is higher than the air-fuel ration feedback control decision starting temperature(270), deciding if a TPS(Throttle Position Sensor) output voltage is higher than a specific value(280), starting fuel quantity control and fuel quantity learning by air-fuel ration feedback(290,300), and deciding engine-off(310).

Abstract translation: 目的：提供一种用于判定空燃比反馈控制系统故障的方法，以防止通过相加地改变氧传感器的输出电压来错误地判定燃料系统的故障和排气的增加。 构成：一种用于判定空燃比反馈控制系统故障的方法包括以下步骤：检查冷却水和进气的温度，发动机转速和充气效率（210），检查冷却水的温度是否更高 超过特定温度并且进气温度在特定范围内（230），判定发动机转速和充气效率是否在特定范围内（250,260），判定冷却水的温度是否高于空气燃料 （270），确定TPS（节气门位置传感器）输出电压是否高于特定值（280），通过空燃比反馈（290,300）开始燃料量控制和燃料量学习，以及 决定发动机关（310）。

公开(公告)号：KR1020030051946A

公开(公告)日：2003-06-26

申请号：KR1020010081604

申请日：2001-12-20

Applicant: 현대자동차주식회사

Inventor： 김윤수

IPC: F02M25/08

Abstract: PURPOSE: An apparatus and a method for controlling evaporative emission of HC(hydro-carbon) gas are provided to achieve improved power performance of automobile and stabilize control of air-fuel ratio. CONSTITUTION: An apparatus comprises a fuel tank(20) mounted with a filler cap(21) and a pressure sensor(22); a check valve(30) mounted on a connection passage(21) for interconnecting the fuel tank and atmosphere, wherein the check valve selectively opens/shuts by the pressure of the HC gas generated in the fuel tank; a hot wire type purifying unit(40) mounted on the connection passage arranged in the rear of the check valve, and which purifies the HC gas flowing through the check valve by oxidizing the HC gas; and an electronic control unit(50) for controlling supply of power to the hot wire type purifying unit in accordance with the pressure in the fuel tank transmitted from the pressure sensor.

Abstract translation: 目的：提供一种用于控制HC（碳氢化合物）气体的蒸发排放的装置和方法，以实现汽车的功率性能提高，稳定空燃比控制。 构成：装置包括安装有加注帽（21）和压力传感器（22）的燃料箱（20）。 安装在用于使燃料箱和气氛相互连接的连接通道（21）上的止回阀（30），其中止回阀通过在燃料箱中产生的HC气体的压力选择性地打开/关闭; 安装在设置在止回阀的后方的连接通道上的热丝型净化单元（40），通过氧化HC气体净化流过止回阀的HC气体; 以及电子控制单元（50），用于根据从压力传感器传递的燃料箱的压力来控制对热丝型净化单元的供电。

公开(公告)号：KR1020030049101A

公开(公告)日：2003-06-25

申请号：KR1020010079211

申请日：2001-12-14

Applicant: 현대자동차주식회사

Inventor： 김윤수

IPC: F02D45/00

CPC classification number: F02D41/22 ,  F02D41/1454 ,  F02D41/2454 ,  F02D2041/228

Abstract: PURPOSE: A method for deciding the failure of an air-fuel ratio feedback control system is provided to prevent the wrong decision of the failure of a fuel system and the increment of exhaust gas by additively changing the output voltage of an oxygen sensor. CONSTITUTION: A method for deciding the failure of an air-fuel ratio feedback control system comprises the steps of checking the temperature of cooling water and intake air, engine rpm, and charge efficiency(210), checking if the temperature of cooling water is higher than a specific temperature and the temperature of intake air is within a specific range(230), deciding if the engine rpm and the charge efficiency are within specific ranges(250,260), deciding if the temperature of cooling water is higher than the air-fuel ration feedback control decision starting temperature(270), deciding if a TPS(Throttle Position Sensor) output voltage is higher than a specific value(280), starting fuel quantity control and fuel quantity learning by air-fuel ration feedback(290,300), and deciding engine-off(310).

Abstract translation: 目的：提供一种用于确定空燃比反馈控制系统故障的方法，以通过相加地改变氧传感器的输出电压来防止燃料系统故障的错误判定和排气的增加。 构成：确定空燃比反馈控制系统故障的方法包括：检查冷却水和进气的温度，发动机转速和充气效率（210），检查冷却水的温度是否更高 比特定温度和进气温度在特定范围内（230），判定发动机转速和充气效率是否在特定范围内（250,260），判定冷却水的温度是否高于空气燃料 定量反馈控制决定启动温度（270），判定TPS（节气门位置传感器）的输出电压是否高于特定值（280），通过空燃比反馈启动燃料量控制和燃料量学习（290,300），以及 决定发动机（310）。

公开(公告)号：KR1020030047307A

公开(公告)日：2003-06-18

申请号：KR1020010077770

申请日：2001-12-10

Applicant: 현대자동차주식회사

Inventor： 김윤수

IPC: F02D41/16

CPC classification number: F02D41/083 ,  F02D41/0002 ,  F02D2009/0223

Abstract: PURPOSE: A method for correcting for an air flow is provided to reduce an exhaust gas flow and to improve stability of an idle state of a vehicle by correcting the air flow. CONSTITUTION: An idle state is maintained and a temperature of cooling water in an engine is checked(S210). Then, an air flow required for P and R ranges of an automatic transmission is checked in real time(S220). After that, it is determined whether or not a gear-shift is carried out from P to R ranges(S230). Then, an R.P.M of a turbine is checked(S240). It is determined whether or not an R.P.M variation of the turbine is larger than a predetermined value(S250). If the R.P.M variation of the turbine is larger than the predetermined value, a correcting value of air according to a temperature of cooling water is corrected to a gain according to a temperature of cooling water. Then, the air flow is reduced until the compensating value of air reaches zero(S260).

Abstract translation: 目的：提供一种用于校正气流的方法，以减少废气流量，并通过校正气流来改善车辆的空转状态的稳定性。 构成：保持空转状态，检查发动机的冷却水温度（S210）。 然后，实时检查自动变速器的P和R范围所需的空气流（S220）。 之后，确定是否从P到R的范围进行换挡（S230）。 然后，检查涡轮机的R.P.M（S240）。 确定涡轮机的R.P.M变化是否大于预定值（S250）。 如果涡轮机的R.P.M变化大于预定值，则根据冷却水的温度将空气的校正值根据冷却水的温度校正为增益。 然后，空气流量减少直到空气的补偿值达到零（S260）。