|
||||||||||
|
||||||||||
13 Jun 2015, 04:38 (Ref:3548265) | #1 | |
Rookie
Join Date: Dec 2009
Posts: 9
|
Shielded efi wires
A couple of questions shielding against emi for cam, crank and knock sensors.
How close to the connector at the ecu and the sensor should shielding extend to? Are there any special requirements for a shielded with a thru bulkhead connector? How is the signal quality affected when you have to unwrap the cable and run it through a bulkhead fitting? |
|
|
14 Jun 2015, 14:19 (Ref:3550315) | #2 | ||
Veteran
Join Date: Nov 2006
Posts: 9,441
|
The two wires from the sensors (signal and ground) or three (5 volt feed) create a loop, which acts as antenna to pick up magnetic fields. To avoid that, either use shielded wire or simply twist the wires together. Each twist creates a smaller loop, which picks up less of that noise, but also adjacent loops pick up a signal that’s inverted from the loop before. This way the induced noise voltages in each loop cancel each other.
|
||
__________________
Balls of steel (knob of butter) They're Asking For Larkins. ( Proper beer) not you're Eurofizz crap. Hace más calor en España. Me han conocido a hablar un montón cojones! Send any cheques and cash to PO box 1 Lagos Nigeria Africa ! |
16 Jun 2015, 13:44 (Ref:3551165) | #3 | |
Rookie
Join Date: Jul 2014
Posts: 14
|
||
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
What could these wires in Vettels front wing be for? | Zico | Formula One | 21 | 10 May 2011 09:05 |