会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明授权
    • Air-fuel ratio control system for internal combustion engines
    • 内燃机空燃比控制系统
    • US5947096A
    • 1999-09-07
    • US937747
    • 1997-09-25
    • Naohiro KurokawaToru KitamuraAkira Kato
    • Naohiro KurokawaToru KitamuraAkira Kato
    • F02D41/00F02D41/14F02D41/22F02D41/34F02D41/36
    • F02D41/008F02D41/1401F02D41/1456F02D41/1458F02D2041/1409F02D2041/1415F02D2041/1416F02D2041/1417F02D2041/1418F02D2041/1431F02D2041/1433
    • An air-fuel ratio control system for an internal combustion engine includes an air-fuel ratio sensor for detecting the air-fuel ratio of exhaust gases from the engine. An ECU estimates the air-fuel ratio of a mixture supplied to each of the cylinders cylinder by cylinder in response to an output from the air-fuel ratio sensor, by using an observer based on a model representative of the behavior of the exhaust system. Cylinder-by-cylinder air-fuel ratio control amounts corresponding respectively to the cylinders are calculated for carrying out feedback control of the air-fuel ratio of the mixture such that each of the estimated air-fuel ratio is converged to a desired value. One of the cylinder-by-cylinder air-fuel ratio control amounts corresponding to one of the cylinders is held at a predetermined value, and it is determined whether relationships in value between ones of the cylinder-by-cylinder air-fuel ratio control amounts corresponding respectively to cylinders other than the one cylinder and a plurality of predetermined determination values meet a predetermined determination pattern. When the relationships meet the predetermined determination pattern, it is determined that the response speed of the air-fuel ratio sensor has changed.
    • 用于内燃机的空燃比控制系统包括用于检测来自发动机的废气的空燃比的空燃比传感器。 ECU基于来自空燃比传感器的输出,通过使用基于表示排气系统的行为的模型的观察者来估计供给到每个汽缸的气缸的气体的空燃比。 计算分别对应于气缸的圆柱体空燃比控制量,以进行混合物的空燃比的反馈控制,使得每个估计空燃比收敛到期望值。 将与其中一个气缸相对应的逐个缸体空燃比控制量中的一个保持在预定值,并且确定是否在每个缸缸空燃比控制量之间的值之间的关系 分别对应于一个气缸以外的气缸,并且多个预定的确定值满足预定的确定模式。 当这些关系满足预定的确定模式时,确定空燃比传感器的响应速度已经改变。