JPS6487841A - Air-fuel ratio control device for internal combustion engine - Google Patents
Air-fuel ratio control device for internal combustion engineInfo
- Publication number
- JPS6487841A JPS6487841A JP62246562A JP24656287A JPS6487841A JP S6487841 A JPS6487841 A JP S6487841A JP 62246562 A JP62246562 A JP 62246562A JP 24656287 A JP24656287 A JP 24656287A JP S6487841 A JPS6487841 A JP S6487841A
- Authority
- JP
- Japan
- Prior art keywords
- air
- fuel ratio
- crank angle
- sensor
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
PURPOSE:To lower the fluctuation of an air-fuel ratio per cycle by correcting the basic quantity of fuel injection operated based on an amount of suction air and revolutions by use of the maximum value of a pressure increasing rate within an ignition cycle measured through both the crank angle and cylinder pressure. CONSTITUTION:Detected values from an air flow meter 2, a water temperature sensor 6, a crank angle sensor 7, an exhaust gas sensor 9 and a pressure sensor 13 detecting cylinder internal pressure are inputted into a control unit 12 so as to perform an operational control for the valve opening time of a fuel injection valve 10. The control unit 12 obtains the increasing rate of cylinder internal pressure every specified crank angle based on the detected values from the crank angle sensor 7 and the pressure sensor 13 so as to estimate an actual air-fuel ratio based on the maximum value thereof or the average value of the maximum values for specified cycles. Then, the correction is made for the basic quantity of fuel injection in such a way that the estimated air-fuel ratio shall be a target air-fuel ratio corresponding to both an amount of suction air and revolutions.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62246562A JP2811667B2 (en) | 1987-09-29 | 1987-09-29 | Air-fuel ratio control device for internal combustion engine |
KR1019880011764A KR940002956B1 (en) | 1987-09-29 | 1988-09-12 | Air-fuel ratio controlling apparatus for internal combustion engine |
US07/250,244 US4903665A (en) | 1987-09-29 | 1988-09-28 | Air-fuel ratio control apparatus for an internal combustion engine |
DE3833122A DE3833122A1 (en) | 1987-09-29 | 1988-09-29 | DEVICE FOR MONITORING THE AIR / FUEL RATIO IN AN INTERNAL COMBUSTION ENGINE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62246562A JP2811667B2 (en) | 1987-09-29 | 1987-09-29 | Air-fuel ratio control device for internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6487841A true JPS6487841A (en) | 1989-03-31 |
JP2811667B2 JP2811667B2 (en) | 1998-10-15 |
Family
ID=17150259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62246562A Expired - Fee Related JP2811667B2 (en) | 1987-09-29 | 1987-09-29 | Air-fuel ratio control device for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2811667B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5182630A (en) * | 1991-02-13 | 1993-01-26 | Sharp Kabushiki Kaisha | Semiconductor device having a particular shaped die pad and coated lower surface |
US20110257871A1 (en) * | 2010-04-16 | 2011-10-20 | Nikki Co., Ltd. | Air fuel ratio control device of engine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58107826A (en) * | 1981-12-22 | 1983-06-27 | Nissan Motor Co Ltd | Electronically controlled fuel injection device of engine |
-
1987
- 1987-09-29 JP JP62246562A patent/JP2811667B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58107826A (en) * | 1981-12-22 | 1983-06-27 | Nissan Motor Co Ltd | Electronically controlled fuel injection device of engine |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5182630A (en) * | 1991-02-13 | 1993-01-26 | Sharp Kabushiki Kaisha | Semiconductor device having a particular shaped die pad and coated lower surface |
US20110257871A1 (en) * | 2010-04-16 | 2011-10-20 | Nikki Co., Ltd. | Air fuel ratio control device of engine |
US8543316B2 (en) * | 2010-04-16 | 2013-09-24 | Nikki Co., Ltd. | Air fuel ratio control device of engine |
Also Published As
Publication number | Publication date |
---|---|
JP2811667B2 (en) | 1998-10-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |