V8 Ignition

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lee9966

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Interesting to learn about the different sensor types.

What method does the sensor for automotive anti-lock brakes use? It too reads a toothed gear.

Thanks, Lee
 

Lakc

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LeeScrounger said:
Interesting to learn about the different sensor types.

What method does the sensor for automotive anti-lock brakes use? It too reads a toothed gear.

Thanks, Lee
Origionally, they used a voltage generating pickup, like old electronic ignitions. Then they moved to hall sensors triggered from the gap. Lately, yet another option, as a cost saving measure, they use thin magnet rings with alternating N/S poles like brushless electrical motors use. At least those are the ones I am currently familiar with.
 

jpeter

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That's not a hall sensor, it's a pickup coil. They are used in diesel engines to check the speed for the governor
Check out this link for hall effect gear sensors.
http://www.allegromicro.com/en/Products/Categories/Sensors/ats.asp

I think coil, reluctor, pickups were used in early electronic distributors. The reluctor pickup is kinda large for use in a really small distributor. Remember it's a coil and as such requires some wraps of wire and a core. No doubt though they'd work. Autos used them for a long time.
 

jpeter

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Hey, wanna see my 1 inch distributor sparkn'? Here's a youtube link.
[ame]http://www.youtube.com/watch?v=SBem_o_GqTA[/ame]
 

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