Invention Grant
- Patent Title: Air-fuel ratio variation abnormality detecting device and air-fuel ratio variation abnormality detecting method
- Patent Title (中): 空燃比变动异常检测装置和空燃比变动异常检测方法
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Application No.: US13772935Application Date: 2013-02-21
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Publication No.: US09043121B2Publication Date: 2015-05-26
- Inventor: Toshihiro Kato , Isao Nakajima , Kiyotaka Kushihama , Tatsuro Shimada , Shinichi Nakagoshi
- Applicant: Toshihiro Kato , Isao Nakajima , Kiyotaka Kushihama , Tatsuro Shimada , Shinichi Nakagoshi
- Applicant Address: JP Toyota-shi
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Toyota-shi
- Agency: Gifford, Krass, Sprinkle, Anderson & Citkowski, P.C.
- Priority: JP2012-037652 20120223
- Main IPC: B60T7/12
- IPC: B60T7/12 ; G05D1/00 ; G06F7/00 ; G06F17/00 ; F02D41/30 ; F02D41/14 ; F02D41/22
Abstract:
In an engine having a plurality of cylinders in which a plurality of fuel injection valves are provided respectively, fuel is injected at a predetermined injection ratio, and an abnormality of air-fuel ratio variation is detected. If a fuel injection amount of at least one of the plurality of the fuel injection valves is smaller than a predetermined reference value, the fuel injection amount is increased so as to become equal to or larger than the reference value.
Public/Granted literature
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