JPS6466449A - Detecting method of combustion air for internal combustion engine - Google Patents
Detecting method of combustion air for internal combustion engineInfo
- Publication number
- JPS6466449A JPS6466449A JP22443787A JP22443787A JPS6466449A JP S6466449 A JPS6466449 A JP S6466449A JP 22443787 A JP22443787 A JP 22443787A JP 22443787 A JP22443787 A JP 22443787A JP S6466449 A JPS6466449 A JP S6466449A
- Authority
- JP
- Japan
- Prior art keywords
- intake pressure
- throttle valve
- pressure
- detected
- engine speed
- 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
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
PURPOSE:To detect atmospheric pressure on upper stream side of a throttle valve at low cost by obtaining an intake pressure corresponding to real engine speed and a throttle valve opening for obtaining the difference between said intake pressure and a real intake pressure. CONSTITUTION:A real intake pressure P2 is detected by a pressure detector 19. And again, an engine speed N1 of an internal combustion engine 13 is detected by a crankangle detector 28, and still, an opening theta1 of a throttle valve 16 is detected by a valve opening detector 30. The intake pressure P1 corresponding to the engine speed N1 and the throttle valve opening theta1 is obtained, then the difference P between said intake pressure P1 and the intake pressure P2 is obtained. In such wise, correct fuel injection quantity can be calculated without influence of change of atmospheric pressure, therefore cost gets low.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62224437A JPH0751912B2 (en) | 1987-09-07 | 1987-09-07 | Method of detecting combustion air for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62224437A JPH0751912B2 (en) | 1987-09-07 | 1987-09-07 | Method of detecting combustion air for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6466449A true JPS6466449A (en) | 1989-03-13 |
| JPH0751912B2 JPH0751912B2 (en) | 1995-06-05 |
Family
ID=16813758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62224437A Expired - Fee Related JPH0751912B2 (en) | 1987-09-07 | 1987-09-07 | Method of detecting combustion air for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0751912B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011144682A (en) * | 2010-01-12 | 2011-07-28 | Honda Motor Co Ltd | Through-throttle-valve air flow amount estimating device and atmospheric pressure estimating device |
-
1987
- 1987-09-07 JP JP62224437A patent/JPH0751912B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011144682A (en) * | 2010-01-12 | 2011-07-28 | Honda Motor Co Ltd | Through-throttle-valve air flow amount estimating device and atmospheric pressure estimating device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0751912B2 (en) | 1995-06-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |