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21. 发明授权

US06343499B1 Air-fuel ratio detecting apparatus and method 有权
标题翻译：空燃比检测装置及方法
公开(公告)号：US06343499B1
公开(公告)日：2002-02-05
申请号：US09448078
申请日：1999-11-23
申请人： Shinsuke Inagaki , Takahide Izutani , Keiichiro Aoki
发明人： Shinsuke Inagaki , Takahide Izutani , Keiichiro Aoki
IPC分类号： G01N2726
CPC分类号： G01N27/4175
摘要： Under normal conditions, the temperature of an oxygen ion-conductive element provided in a sensor body is about 700° C., and the element impedance is about 30 &OHgr;. If there is a fault in the sensor body or a sensor body drive circuit, the current becomes zero and the element impedance becomes infinite. If a heater has deteriorated, the element temperature rises only up to, for example, about 550° C., and the element impedance becomes about 150 &OHgr;. If there is a fault in the heater or the heater drive circuit, the element is heated only by exhaust gas, so that the element temperature rises only up to about the temperature of exhaust gas and the element impedance becomes a value corresponding to an element temperature of about 300° C. Three reference values Z1, Z2, Z3 are set for comparison with the detected value of element impedance in order to perform fault diagnosis.
摘要翻译：在正常条件下，设置在传感器主体中的氧离子传导元件的温度约为700℃，元件阻抗约为30欧姆。如果传感器体或传感器体驱动电路存在故障，电流变为零，元件阻抗变为无穷大。如果加热器已经劣化，元件温度仅升高到例如约550℃，并且元件阻抗变为约150欧姆。如果加热器或加热器驱动电路存在故障，则元件仅被排气加热，使得元件温度仅升高到废气的温度，并且元件阻抗变为对应于元件温度的值设定三个参考值Z1，Z2，Z3，以便与元件阻抗的检测值进行比较，以进行故障诊断。

22. 发明授权

US6059057A Catalyst temperature control apparatus for hybrid vehicle 失效
标题翻译：用于混合动力汽车的催化剂温度控制装置
公开(公告)号：US6059057A
公开(公告)日：2000-05-09
申请号：US296611
申请日：1999-04-23
申请人： Suehiro Yamazaki , Kaoru Ohtsuka , Takahide Izutani
发明人： Suehiro Yamazaki , Kaoru Ohtsuka , Takahide Izutani
IPC分类号： B60K6/445 , B60L11/12 , B60W10/06 , B60W10/08 , B60W10/26 , B60W20/00 , F01N3/20 , F02M25/07 , B60K1/00
CPC分类号： B60W20/15 , B60K6/445 , B60L11/123 , B60W10/06 , B60W10/08 , B60W10/26 , B60W20/00 , F01N3/2006 , F02D41/0055 , F02M26/15 , F02M26/16 , F02M26/71 , B60L2240/445 , B60W2510/068 , B60Y2400/442 , F02D2200/0802 , F02D41/006 , F02D41/0065 , F02D41/123 , Y02T10/26 , Y02T10/47 , Y02T10/54 , Y02T10/6217 , Y02T10/6239 , Y02T10/6286 , Y02T10/7077
摘要： In an engine mounted on a hybrid vehicle, even in an atmosphere that readily cools down a catalyst by relatively low-temperature gaseous exhausts, for example, under a fuel cut control, the structure of the invention quickly warms up the catalyst and maintains a conversion efficiency of the gaseous exhausts at a high level. When it is determined that an engine is in operation and the fuel cut control is being performed, a reflux valve is turned on to reflux the gaseous exhausts into an intake conduit. This control procedure enables the relatively low-temperature gaseous exhausts to be refluxed to the intake conduit, instead of flowing into the catalyst, thereby preventing the catalyst from being cooled down.
摘要翻译：在安装在混合动力车辆上的发动机中，即使在通过相对低温的气体排气容易地冷却催化剂的气氛中，例如在燃料切断控制下，本发明的结构也快速加热催化剂并维持转化高排放气体排放的效率。当确定发动机正在运行并且正在执行燃料切断控制时，打开回流阀以将气态排气回流到进气管道中。该控制程序使相对低温的气体排气回流到进气导管，而不是流入催化剂，从而防止催化剂冷却。

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