Jane/Projects/MC IC-Ignitor Research: Difference between revisions
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This is research on the "IC-Ignitor" for mid-80s' motorcycles. The target platform is a 1985 Honda CB650SC. Which is a 655cc 16-V DOHC I4 with individual carburetors. The ignition system is fully electronic, TCI, with two ignition coils (wasted spark). The CPS(Crank Position Sensor) is a "pulse generator" setup. It utilizes two "pickup" coils. The output signal is Variable Reluctance(VR). There is a single "wiper" attached to the crank. Each sensor will be pulsed once per 360° of rotation. The first sensor is pulsed at #1&3 TDC. The second sensor is pulsed at #2&4 TDC. | This is research on the "IC-Ignitor" for mid-80s' motorcycles. The target platform is a 1985 Honda CB650SC. Which is a 655cc 16-V DOHC I4 with individual carburetors. The ignition system is fully electronic, TCI, with two ignition coils (wasted spark). The CPS(Crank Position Sensor) is a "pulse generator" setup. It utilizes two "pickup" coils. The output signal is Variable Reluctance(VR). There is a single "wiper" attached to the crank. Each sensor will be pulsed once per 360° of rotation. The first sensor is pulsed at #1&3 TDC. The second sensor is pulsed at #2&4 TDC. | ||
==See Also== | |||
* [[CB650SC/Specifications#Ignition System]] | |||
==Crank Angle Sensor== | |||
===Photos=== | |||
[[File:Honda CB650SC-F Pulse Generator.jpeg|thumb|none|"Pulse Generator" on 1985 CB650SC]] | |||
==VR-Variable Reluctance== | ==VR-Variable Reluctance== | ||
===Illustrations=== | ===Illustrations=== | ||
[[File:Honda-I4-TCI-dual_trigger.jpeg|thumb|none|Honda I4 TCI early dual sense]] | |||
[[File:Honda Schmitt Trigger circuit schematic.jpeg|thumb|none|Honda Schmitt Trigger Circuit Example]] | |||
[[File:Honda Schmitt Trigger IO waveforms.jpeg|thumb|none|Honda Schmitt Trigger Waveforms]] | |||
===Resources=== | ===Resources=== | ||
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* https://forum.arduino.cc/t/sensing-engine-rpm-via-coil/10284/3 | * https://forum.arduino.cc/t/sensing-engine-rpm-via-coil/10284/3 | ||
* http://www.bgsoflex.com/v22/msv22.html | * http://www.bgsoflex.com/v22/msv22.html | ||
*http://www.megamanual.com/ms2/pcb.htm | * http://www.megamanual.com/ms2/pcb.htm | ||
*https://www.bgsoflex.com/v22/megasquirt_ShemV2.2.pdf | * https://www.bgsoflex.com/v22/megasquirt_ShemV2.2.pdf | ||
* https://avionicsduino.com/index.php/en/variable-reluctance-sensors-and-signal-conditioning/ | * https://avionicsduino.com/index.php/en/variable-reluctance-sensors-and-signal-conditioning/ | ||
* https://mcs.woodward.com/content/motohawk/Documentation/MotoHawk2015bSP0/HTML/MotoHawk_topics/VRInterfacing.html | * https://mcs.woodward.com/content/motohawk/Documentation/MotoHawk2015bSP0/HTML/MotoHawk_topics/VRInterfacing.html | ||
| Line 35: | Line 46: | ||
* https://worldwide.espacenet.com/patent/search/family/011532315/publication/JPS5949426B2 | * https://worldwide.espacenet.com/patent/search/family/011532315/publication/JPS5949426B2 | ||
* https://patents.google.com/patent/JPS5285645A/en | * https://patents.google.com/patent/JPS5285645A/en | ||
==Timing== | |||
===OEM=== | |||
{| class="wikitable" | |||
|+ Advance Table | |||
!RPM | |||
!Degrees Advance | |||
|- | |||
|At idle min<sup>-1</sup> | |||
|10 BTDC | |||
|- | |||
|Full advance/min<sup>-1</sup> | |||
|32 BTDC/3000 | |||
|} | |||
==Ignition== | |||
Latest revision as of 16:33, 5 April 2025
This is research on the "IC-Ignitor" for mid-80s' motorcycles. The target platform is a 1985 Honda CB650SC. Which is a 655cc 16-V DOHC I4 with individual carburetors. The ignition system is fully electronic, TCI, with two ignition coils (wasted spark). The CPS(Crank Position Sensor) is a "pulse generator" setup. It utilizes two "pickup" coils. The output signal is Variable Reluctance(VR). There is a single "wiper" attached to the crank. Each sensor will be pulsed once per 360° of rotation. The first sensor is pulsed at #1&3 TDC. The second sensor is pulsed at #2&4 TDC.
See Also
Crank Angle Sensor
Photos
VR-Variable Reluctance
Illustrations
Resources
General
- https://archive.org/details/motorcycleelectr0000tran/
- https://forum.arduino.cc/t/sensing-engine-rpm-via-coil/10284/3
- http://www.bgsoflex.com/v22/msv22.html
- http://www.megamanual.com/ms2/pcb.htm
- https://www.bgsoflex.com/v22/megasquirt_ShemV2.2.pdf
- https://avionicsduino.com/index.php/en/variable-reluctance-sensors-and-signal-conditioning/
- https://mcs.woodward.com/content/motohawk/Documentation/MotoHawk2015bSP0/HTML/MotoHawk_topics/VRInterfacing.html
- https://github.com/rusefi/rusefi/wiki/Trigger-Configuration-Guide
VR Conditioner
- https://wiki.speeduino.com/en/boards/VR_conditioner
- http://jbperf.com/dual_VR/v2_1.html
- https://www.diyautotune.com/support/technical-articles/other/megasquirt-vr/
- https://openlogicefi.com/shop/p/duel-vr-conditioner-detonationems
- https://github.com/speeduino/Hardware/tree/main/VR%20Conditioner/Latest
- https://www.tindie.com/products/techcolab/max9926-dual-vr-conditioner-optional-regulator/
- https://diy-efi.co.uk/product/vr_conditioner
- https://wtmtronics.com/product/dsc-dual-signal-conditioner-vr/
Patents
- https://worldwide.espacenet.com/patent/search/family/015406861/publication/JPS5572654A
- https://patents.google.com/patent/US4499544A/en
- https://worldwide.espacenet.com/patent/search/family/014564227/publication/JPS63277861A
- https://patents.google.com/patent/US3641377A/en
- https://worldwide.espacenet.com/patent/search/family/015411755/publication/JPS5270245A
- https://worldwide.espacenet.com/patent/search/family/011532315/publication/JPS5949426B2
- https://patents.google.com/patent/JPS5285645A/en
Timing
OEM
| RPM | Degrees Advance |
|---|---|
| At idle min-1 | 10 BTDC |
| Full advance/min-1 | 32 BTDC/3000 |