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1.发明授权公开(公告)号：US09291085B2
公开(公告)日：2016-03-22
申请号：US14281704
申请日：2014-05-19
Applicant: Kawasaki Jukogyo Kabushiki Kaisha
Inventor： Daisuke Yanase , Junji Tamura , Kouzou Suzuki , Takashi Abe , Yoshinobu Mori
CPC classification number: F01N11/007 , F01N2430/06 , F01N2550/02 , F01N2560/14 , F02D41/0295 , F02D41/1441 , F02D41/1454 , F02D41/1456 , F02D41/1474 , F02D2200/0816 , Y02T10/47
Abstract: A method of estimating an ideal air-fuel ratio in an internal combustion engine, comprises receiving an output of an upstream air-fuel ratio sensor and an output of a downstream air-fuel ratio sensor, the upstream air-fuel ratio sensor being attached to an exhaust gas passage such that it is positioned upstream of a catalyst provided in the exhaust gas passage to purify an exhaust gas, the downstream air-fuel ratio sensor being attached to the exhaust gas passage such that it is positioned downstream of the catalyst; detecting a state in which the catalyst does not store or release oxygen based on the output of the downstream air-fuel ratio sensor; and deciding as an estimated ideal air-fuel ratio in the internal combustion engine an air-fuel ratio detected by the upstream air-fuel ratio sensor when the state in which the catalyst does not store or release oxygen is detected.
Abstract translation: 一种估计内燃机中的理想空燃比的方法，包括接收上游空燃比传感器的输出和下游空燃比传感器的输出，上游空燃比传感器附接到 排气通道，其设置在排气通道中设置的催化剂的上游，以净化废气，所述下游空燃比传感器附接到排气通道，使得其位于催化剂的下游; 基于下游空燃比传感器的输出检测催化剂不储存或释放氧气的状态; 并且当检测到催化剂不储存或释放氧气的状态时，确定内燃机中由上游空燃比传感器检测的空燃比的估计理想空燃比。
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2.发明申请公开(公告)号：US20140338312A1
公开(公告)日：2014-11-20
申请号：US14281704
申请日：2014-05-19
Applicant: Kawasaki Jukogyo Kabushiki Kaisha
Inventor： Daisuke Yanase , Junji Tamura , Kouzou Suzuki , Takashi Abe , Yoshinobu Mori
CPC classification number: F01N11/007 , F01N2430/06 , F01N2550/02 , F01N2560/14 , F02D41/0295 , F02D41/1441 , F02D41/1454 , F02D41/1456 , F02D41/1474 , F02D2200/0816 , Y02T10/47
Abstract: A method of estimating an ideal air-fuel ratio in an internal combustion engine, comprises receiving an output of an upstream air-fuel ratio sensor and an output of a downstream air-fuel ratio sensor, the upstream air-fuel ratio sensor being attached to an exhaust gas passage such that it is positioned upstream of a catalyst provided in the exhaust gas passage to purify an exhaust gas, the downstream air-fuel ratio sensor being attached to the exhaust gas passage such that it is positioned downstream of the catalyst; detecting a state in which the catalyst does not store or release oxygen based on the output of the downstream air-fuel ratio sensor; and deciding as an estimated ideal air-fuel ratio in the internal combustion engine an air-fuel ratio detected by the upstream air-fuel ratio sensor when the state in which the catalyst does not store or release oxygen is detected.
Abstract translation: 一种估计内燃机中的理想空燃比的方法，包括接收上游空燃比传感器的输出和下游空燃比传感器的输出，上游空燃比传感器附接到 排气通道，其设置在排气通道中设置的催化剂的上游，以净化废气，所述下游空燃比传感器附接到排气通道，使得其位于催化剂的下游; 基于下游空燃比传感器的输出检测催化剂不储存或释放氧气的状态; 并且当检测到催化剂不储存或释放氧气的状态时，确定内燃机中由上游空燃比传感器检测的空燃比的估计理想空燃比。
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