Jane/Projects/MC IC-Ignitor Research: Difference between revisions

From Jane Hacker Wiki
Jump to navigation Jump to search
Created page with "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 pe..."
 
 
(16 intermediate revisions by the same user not shown)
Line 1: Line 1:
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 TDC. The second sensor is pulsed at the idle firing time (I think).
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===
[[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===
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===
{| 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

"Pulse Generator" on 1985 CB650SC


VR-Variable Reluctance

Illustrations

Honda I4 TCI early dual sense
Honda Schmitt Trigger Circuit Example
Honda Schmitt Trigger Waveforms

Resources

General

VR Conditioner

Patents

Timing

OEM

Advance Table
RPM Degrees Advance
At idle min-1 10 BTDC
Full advance/min-1 32 BTDC/3000

Ignition

Retrieved from "https://janehacker.ca/wiki-int/index.php?title=Jane/Projects/MC_IC-Ignitor_Research&oldid=1629"