JPS57200669A - Ignition controlling apparatus for internal-combustion engine - Google Patents
Ignition controlling apparatus for internal-combustion engineInfo
- Publication number
- JPS57200669A JPS57200669A JP8666081A JP8666081A JPS57200669A JP S57200669 A JPS57200669 A JP S57200669A JP 8666081 A JP8666081 A JP 8666081A JP 8666081 A JP8666081 A JP 8666081A JP S57200669 A JPS57200669 A JP S57200669A
- Authority
- JP
- Japan
- Prior art keywords
- time
- current
- count value
- ignition coil
- signal
- 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
- Ignition Installations For Internal Combustion Engines (AREA)
- Electrical Control Of Ignition Timing (AREA)
Abstract
PURPOSE: To enable to achieve optimal control on the current supplied to an ignition coil under any circumstances, by controlling current supplying time in a succeeding ignition period on the basis of the current supplying time from the time when current supply is started to the time when the primary current of the ignition coil is increased to a prescribed level.
CONSTITUTION: Current supply to an ignition coil 19 is started from the time instant of a count value CSO. When the current I is increased to a prescribed value IO, a current detecting circuit 24 is set into operation and produces an output signal D. In response to the signal D, a latch circuit 25 latches the count value of a counter 26 at the time instant. On the other hand, a digital computor 10 takes out a count value CDO from the latch circuit 25 in response to the signal D and calculates the time tDO passed during the above while from the count difference CDO-CSO. Then, it calculates the current supplying time and the count value of the next current supplying time promptly from the time tDO and starts current supply to the ignition coil 19 for the next cycle.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8666081A JPS57200669A (en) | 1981-06-04 | 1981-06-04 | Ignition controlling apparatus for internal-combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8666081A JPS57200669A (en) | 1981-06-04 | 1981-06-04 | Ignition controlling apparatus for internal-combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57200669A true JPS57200669A (en) | 1982-12-08 |
Family
ID=13893181
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8666081A Pending JPS57200669A (en) | 1981-06-04 | 1981-06-04 | Ignition controlling apparatus for internal-combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57200669A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4558684A (en) * | 1983-07-21 | 1985-12-17 | Lucas Industries Public Limited Company | Internal combustion engine coil-type ignition control |
US4915086A (en) * | 1987-03-02 | 1990-04-10 | Marelli Autronica S.P.A. | Variable-energy-spark ignition system for internal combustion engines, particularly for motor vehicles |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5623564A (en) * | 1979-08-06 | 1981-03-05 | Nippon Denso Co Ltd | Method of controlling energizing time of ignition coil |
-
1981
- 1981-06-04 JP JP8666081A patent/JPS57200669A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5623564A (en) * | 1979-08-06 | 1981-03-05 | Nippon Denso Co Ltd | Method of controlling energizing time of ignition coil |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4558684A (en) * | 1983-07-21 | 1985-12-17 | Lucas Industries Public Limited Company | Internal combustion engine coil-type ignition control |
US4915086A (en) * | 1987-03-02 | 1990-04-10 | Marelli Autronica S.P.A. | Variable-energy-spark ignition system for internal combustion engines, particularly for motor vehicles |
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