JPS643265A - Control device for ignition timing - Google Patents
Control device for ignition timingInfo
- Publication number
- JPS643265A JPS643265A JP15831287A JP15831287A JPS643265A JP S643265 A JPS643265 A JP S643265A JP 15831287 A JP15831287 A JP 15831287A JP 15831287 A JP15831287 A JP 15831287A JP S643265 A JPS643265 A JP S643265A
- Authority
- JP
- Japan
- Prior art keywords
- ignition timing
- atmospheric pressure
- output
- engine
- high land
- 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 Ignition Timing (AREA)
Abstract
PURPOSE:To correct the ignition timing of an engine by atmospheric pressure and prevent lag in ignition timing on a high land by providing an atmospheric pressure sensor in an ignition timing control device. CONSTITUTION:The number of output pulses of an AFS 13 which enters between defined crank angles of an engine 1 is counted by an AN detecting means 20 from the output of the AFS 13 and the output of a crank angle sensor 17. An engine speed is calculated from the period of the crank angle sensor 17 by a control means 21 and an ignition timing A is obtained by the AN detecting means 20 based on the counted load data. Upon obtaining a correcting quantity by a specific formula from a value corresponding to atmosphere pressure on a flatland or on a high land detected by an atmospheric pressure sensor 24, this correcting quantity is subtracted from the ignition timing A. Based on this, electrification of an ignition coil 19 is controlled and the ignition timing is advanced in accordance with the atmospheric pressure. Thereby, an output torque can be restrained from lowering on a high land while also enabling the optimum ignition timing to be set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15831287A JPS643265A (en) | 1987-06-24 | 1987-06-24 | Control device for ignition timing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15831287A JPS643265A (en) | 1987-06-24 | 1987-06-24 | Control device for ignition timing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS643265A true JPS643265A (en) | 1989-01-09 |
Family
ID=15668881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15831287A Pending JPS643265A (en) | 1987-06-24 | 1987-06-24 | Control device for ignition timing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643265A (en) |
-
1987
- 1987-06-24 JP JP15831287A patent/JPS643265A/en active Pending
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