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Electronic ignition control apparatus |
| T100502 |
Electronic ignition control apparatus
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| Patent Drawings: | |
| Inventor: |
Kobashi, et al. |
| Date Issued: |
April 7, 1981 |
| Application: |
06/058,923 |
| Filed: |
July 19, 1979 |
| Inventors: |
Hattori; Tadashi (Okazaki-shi, Aichi-ken, JP)
Kawase; Toru (Toyota-shi, Aichi-ken, JP)
Kobashi; Mamoru (Aichi-gun, Aichi-ken, JP)
Ueno; Yoshiki (Nukata-gun, Aichi-ken, JP)
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| U.S. Class: |
123/406.52; 123/406.6 |
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| International Class: |
F02P 5/15 |
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| Abstract: |
An electronic ignition control device for determining and maintaining a vehicle at the optimum spark advance for different ranges of crankshaft rotation speeds and ratios of air intake to crankshaft rotation speed. Signals indicating a range in which the instantaneous rotation speed falls and a range in which air intake/speed ratio falls define a ROM address at which is stored an optimum spark advance angle for that combination of ranges. The signal indicating the stored angle is applied to a discriminator which also receives inputs from a crank switch monitor, a throttle switch monitor and a coolant temperature sensor. When cranking or idling is detected, the discriminator substitutes a cranking advance or idling advance angle for the stored optimum advance angle signal. |
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