JPS6473143A - Air-fuel ratio control device for engine - Google Patents
Air-fuel ratio control device for engineInfo
- Publication number
- JPS6473143A JPS6473143A JP23165687A JP23165687A JPS6473143A JP S6473143 A JPS6473143 A JP S6473143A JP 23165687 A JP23165687 A JP 23165687A JP 23165687 A JP23165687 A JP 23165687A JP S6473143 A JPS6473143 A JP S6473143A
- Authority
- JP
- Japan
- Prior art keywords
- air
- fuel ratio
- starting
- effective pressure
- crank angle
- 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.)
- Pending
Links
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
PURPOSE:To properly control an air-fuel ratio during the starting, by a method wherein, based on an effective pressure shown in Fig calculated from outputs from an in-cylinder pressure sensor and a crank angle sensor, initial explosion is decided, and the starting, initial explosion, and complete explosion are properly grasped. CONSTITUTION:Detecting values from a key switch 1d, an airflow meter 4, an in-cylinder pressure sensor 11, and a crank angle sensor 14 are inputted to a control means 16. The control means 16 calculates on average effective pressure shown in Fig per one cycle based on outputs from the in-cylinder pressure sensor 11 and the crank angle sensor 14, Even when the key switch 1d is turned ON and the effective pressure shown in Fig is below or exceeds a reference value, when the state is not continued during a given cycle, an air-fuel ratio is enriched by an equivalent in order to promote the starting. When a state in which the average effective pressure shown in Fig exceeds a given value is continued during a given cycle or more, it is decided that initial explosion enters, an air-fuel ratio is further leaned than that during the starting, and the feed of fuel required for warming up is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23165687A JPS6473143A (en) | 1987-09-16 | 1987-09-16 | Air-fuel ratio control device for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23165687A JPS6473143A (en) | 1987-09-16 | 1987-09-16 | Air-fuel ratio control device for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6473143A true JPS6473143A (en) | 1989-03-17 |
Family
ID=16926913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23165687A Pending JPS6473143A (en) | 1987-09-16 | 1987-09-16 | Air-fuel ratio control device for engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6473143A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6610338B2 (en) | 1998-01-05 | 2003-08-26 | Teckson International Limited | Easy tearing bags and packaging material |
-
1987
- 1987-09-16 JP JP23165687A patent/JPS6473143A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6610338B2 (en) | 1998-01-05 | 2003-08-26 | Teckson International Limited | Easy tearing bags and packaging material |
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