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How Engine Sensors Work: Crankshaft, Camshaft, ABS. Magnetic Inductive Sensors.
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- čas přidán 7. 04. 2016
- How engine sensors work. We look at how engine sensors are constructed and how they work. (Crankshaft position sensors, camshaft position sensors etc.) 🔔 SUBSCRIBE for more helpful videos on random subjects (It's FREE!) ➜ bit.ly/HelpfulVideosFromChris
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Magnetic inductive sensors are very commonly used on modern vehicles and their failure can cause all kinds of problems: Difficulty starting, acceleration problems, engine speed 'hunting', increased fuel consumption and even the engine cutting out while driving.
For more information, see my website post about this video:
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Cheers!
Chris 👍
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'Random Chris' is a Helvellyn Ltd brand. Disclaimer: Due to factors beyond the control of Helvellyn Ltd, we cannot guarantee against unauthorized modifications of this information, or improper use of this information. Helvellyn Ltd assumes no liability for property damage, injury or death incurred as a result of any of the information contained in this video. Helvellyn Ltd. recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, open flames, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of Helvellyn Ltd, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not Helvellyn Ltd. Disclosure: any links in this description may be affiliate links. If you decide to buy some items from them, Helvellyn Ltd may receive a small percentage compensation for having suggested the suppliers to you. (This costs you nothing) As an Amazon Associate we earn from qualifying purchases. Helvellyn Ltd only recommends suppliers and products which we believe in, so there is never any conflict of interest.
#enginesensors #electronics #electromagnetism
Thank you! We were just covering this in an engineering class, and your video really helped me to understand inductive sensors!
My pleasure 👍
This is a brilliant video! Really helped me refresh my memory on how they work. Please do more automotive videos! You explain things really simply and clearly! I've been looking around for educational videos to help me with my distance course but most have robotic it boring voices and often don't keep it simple (I easily get distracted 😇). THANKYOU!
My pleasure Jess, thank you for taking the time to comment. Cheers, Chris 👍
amazing! thank you for the video! you make it so much clear!!
You're welcome Daniel! Chris 👍
Thanks for the information :)
Sir, yes this video has been very useful. Thanks for the great visuals and info
Glad it was helpful Jim! 👍
Great video champ!
Im doing an engineering assignment. This really helped. Thanks!
+N1GhT_HunT34 My pleasure! Cheers, Chris 👍
This was a very well explained video! Thanks! Subbed
Cheers Kyle, welcome aboard 👍
Pro..man..you are legend ..thanks..for your explan..ted..
Very usefull information! Thank you!
👍
Great information
nice video.bro....please tell me how does reluctors on carbureted bike work?? please...it has a magnetic pick up coil but does it trigger ??
Brilliant...this is what im trying to tell my mechs...I had issues with my CKP sensor.
thanks for the video. One question if rpm=3000 tooth no 60 what will be frequency .
Well done bro !
Simple and to the point , thanks
Ha ha, this was one of my first videos so I didn't have a clue what I was doing but I'm glad you enjoyed it. Cheers! Chris 👍
Thanks information complet contain
Brilliant stuff! Liked and subscribed
Welcome aboard Ali :-) Cheers, Chris 👍
Thank you for easy explanation
👍
Bro video is great...but I was wondering that some manufacturers put TECHO METER without the sensor..I mean does the techometer works from the coil power... And how accurate is that...you should bring this to LIMELIGHT .. And as always video was GREAT 🔥🔥🔥
Thank you for this explanation 0:01
You are Awesome! THANKS from USA
🙏
Great informative video sir
Thank you! Chris 👍
Thank you..big like
+Lukaš Nevidzan My pleasure! Cheers, Chris 👍
Thanks for the video. A diagnostics code tells me my motorcycle's crankshaft sensor has a fault. Unfortunately, a new one costs a £few hundred. Why would the sensor fail (for no obvious reason), and is it possible to repair it myself?
Bro thanks for share your knowledge ,l learn something here
My pleasure! 😊
Genios, thanks.
My pleasure Jesse
saludos desde Colombia
thanks! i recently put in a NEW (but bad) CKP sensor and its apparently shorted internally- screwing up my fuel level gauge, ignition coil/ignitor(?) and setting off a host of other selonoids- et al! I cleaned all grounds, rebuilt my fuse box, new ECU, cleaned everything........no changes UNTIL i just now decided to swap back in the old CKP sensor. All the electrical clicking, etc went away immediately and Im not going thru the KEY RELEARN process for the new ECU
On v6 engine skyline gt3000 camshaft sensor how many pin it got
My Nissan Almera 1.5 Petrol 2004 is having really bad starts. In very cold weather it's even worse. I can get it to run eventually but it throws up the code for bad crankshaft sensor. I had it changed back in July and everything was fine for around 8 weeks then the old symptoms started again and the code reappeared. Could it just be that the sensor has gone bad or could the chain be stretching? Love your videos by the way!
Hi Chris , I am using a MSD84661 magnetic sensor and it is in my EFI ford (motec) ecu i am having problems with sync errors , i have tried different gaps ,it has a shielded wire , it is about a year old , my tuner did some filter adjustments , but its always come up ? do you know if i alter the position of the flag and reset the crip angle, if this would help , also i have read they are good at picking up noise ,could it be picking up noise from inside the distributor cap ?
Finnaly i understood !!!!!! thx
👍
v good
Christopher please help my camshaft sensor is always on. why is this I have a two wire sensor when IG is on there is no pulse just a straight power reading.
thanks
You're welcome Akbar :-)
Nice vid and diagrams but you got your wires a bit crossed towards the end (pun intended).
The indicative sensor you’re describing has an output voltage proportional to the rpm of the reluctor - you demonstrated that nicely with the salad spinner and these are used in applications where speed information is required, but position is not. You went a bit awry when you mentioned the missing tooth “which helps the ECM”.
The missing tooth trigger wheel (used by most vehicles crank shaft sensors and commonly a 32:1 or 60:2 - teeth to missing teeth arrangement) is a feature of Hall effect sensors. These produce a square wave wrt (usually) a 5v reference and it is the frequency which changes with rpm, rather than output voltage. The engine management can interpret this frequency as engine speed, and will spot the missing tooth as it passes. From this it will know both speed and the position of the crankshaft relative to top dead centre and can time ignition and fuelling to suit.
This video is years old now though so I’m sure it’s since been covered by you!
Hello Brother
I have a few questions for you about this subject, thank you very much if you answer.
i will owe
So does it mean tht if the camshaft sensor doesn't give voltage when cranking its dead n the car won't start coz I hv a Mercedes v6 it cranks but no start so wht I did is I took my voltmeter put it on 20v the plg in my negative voltmeter wire on negative wire of the camshaft sensor then I plugged the posetive voltmeter wire on the signal wire of the camshaft it gv me 5v then when I place a metal on the cam shat the voltage it's dropping to zero dies it mean the sensor is dead or I'm the one who's testing it the other way round
Can anyone help me I replaced a crankshaft for Toyota Passo 1KR and after finished Assembly vehicle not starting I fit a secondhand crankshaft and I took that tooth were the sensor used magnetise from the crankshaft which was having problem since the one I fit in didn't come with that teeth so any idea from anyone to help me to start this car please
I'm surprised You Tube didn't flag this video? Did you just toss a salad?
Can a failing crank shaft position sensor cause the engines timing to be off thus causing you to burn more fuel but not actually bad enough to throw a code. Also jeep will stumpble studder and back fire upon restarting if still hot. Sometimes will completly stall out and ill have to wait to reatart it. Starts fine in the am but getting ritten gas mileage. Assume everything else is new and in working order.
I'm not sure you would be able to keep the engine running had the sensor completely failed and would it start to fail, you would have to keep pressing the gas pedal lightly to keep the engine from stalling which would use a lot of gas and almost impossible to keep the engine from stalling. I could be wrong, not all vehicle's operate the same.
Wheninstall this sensor should there be a space or it have to touch and will back off by it self?
There will be a clearance with the sensor tightened to the correct torque (i.e. you don't need to back it off)
Hi Chris !
Is it possible that the sensor perform if we have the coil around the permanent magnet. (without part 1 ) I assume that the permanent magnet will make its own magnetic field and when the ferrous material pass by that field it will generate the voltage impulse so we know RPM. So why exactly is that soft iron core needed ? Is it because they can connect to each other or what ?
(sorry for bad english)
Hi Filip :-)
This is an interesting question. I just sketched some drawings of the magnetic flux from the magnet in the two versions of the sensor (one with a soft iron core, and one where there is no soft iron core and the copper coil is arranged directly around the permanent magnet.)
These sketches demonstrated that the soft iron core serves to concentrate and extend the flux in the centre of the copper coil. With the coil wrapped around the permanent magnet itself the flux is much less concentrated than it is with a soft iron core, so the voltages produced by the coil would be weaker. Another reason I can think of is that permanent magnets can be de-magnetised with hot-cold temperature cycling, whereas the soft iron core can protrude from the sensor and be exposed to changes in temperature, whilst the magnet is protected from extreme temperature changes by being hidden inside the sensor body.
This is my best guess, if any other viewers have any opinions, please feel free to contribute by commenting below. (P.S. Filip you speak better English than some British people I have met! 😂) Cheers, Chris
When you put Ferrous metal, "nail, a bolt or piece of metal the magnet will stick to" against the end of the permanent magnet it extends the magnetic field to the end of the metal you just brought in contact with it. That with a coil of wire around it will now send an A/C pulse that can be measured from the 2 wires of the copper coil. A fun way to visualize the effect it to take a piece of metal, say a bolt and place a fairly strong magnet to the end of it. It sticks to the magnet. Now, bring the end of the bolt not the magnet close to another piece of metal and it will stick to the first bolt. The magnet field is extended through and into the metal bolt or bolts. If you remove the 2nd bolt and wind some copper wire around the bolt then hook it to a meter set on a fairly low voltage setting or better yet and oscilloscope then take a piece of metal, ie.. another bolt like or even the 2nd one you just removed from the end of the first one then wave it close to the end of the bolt with the copper wire around it. You should get a reading. Likewise if you pull the magnet off the bolt with the copper wire and wave one end of it close to the bolt with the copper wire you should also get a reading. Hope this helps.
Does this sensor important to start a engine ?
Can neodymium magnets in the body of a car affect these sensors? My car is in the garage with a problem with the camshaft sensor and may be coincidence, but I have few neodymiummagnets in the car...
It's definitely a possibility, try moving them away to check 👍
Please help me, where i can find abs magnetic wheel.ring with 69mm inner and 71mm outer diameter. I searched everywhere but i can't find. 😔
The theory is correct, but most of the crankshaft pos. sensors I run into work on a 5Vdc reference voltage- NOT AC. These sensors typically "pull down" from 5v to 0v as the reluctor passes, creating a square wave pattern (when viewed via an oscilloscope) that the PCM uses to index the location of the crankshaft.
They are Hall Sensors, this video is specifically about Magnetic Inductive Sensors, as per the title. Cheers, Chris
Like!!! Thank you very much Chris.
My pleasure Antegas :-)
wow
Of course suscribed
Welcome aboard! Cheers, Chris 👍
How to calculate HTZ with rpm
3 years of college in 3 minutes, thanks lord Chris!
👍👍👍
I would have disliked the video for the explanation in the beginning, but then the demonstration came in, and I changed my mind
🙏
It would have been every useful if you would have showed us how to hook the multimeter up to the sensor and where the sensor gets its power from....
There are two pins. One lead goes on each pin. There is no power other than that generated by the moving magnetic field interacting with the coil inside the sensor. Cheers, Chris
I bought new sensor. It's not magnetic when I put a screw driver to it. But the old one it sticks to the screwdriver.
Why Hall Sensors Are damaged bro
rebuilt an engine cranked it ..6 codes.replaced cam crank sens. and plug and play coil packs etc. also engine backfired blew brake boost off throttle body.once all sensors and coil packs replaced cranked and cranked and cranked it caught and started and stalled twice...shook too.Chec ked timing both cams were off a little...reset timing cranked twice by hand confirmed timing...cranked and immediately engine backfired blowing brake booster line off throttle body AGAIN.no rpms in crank mode now no codes. did not check compression Timing is supposedly dead on.locked cams crank Libes up perfect what the fuck???anyone got a guess?
and still a no start
my car declines in speed go up hill.
start going faster at the bottem
J
These sensors are the biggest waste of money ever whoever invented these and implemented them in a motor needs their head examined.and the manufacturer whom agreed to let them manufacturer their vehicle with them got scammed big time. They are screwing the public with all this junk.
Christopher please help my camshaft sensor is always on. why is this I have a two wire sensor when IG is on there is no pulse just a straight power reading.
Christopher please help my camshaft sensor is always on. why is this I have a two wire sensor when IG is on there is no pulse just a straight power reading.