I had to watch 8 videos on how a dyno works, none of which explained how a dyno works, to finally find this one, which actually explains how a dyno works. The graphics are perfect. They tell me exactly what I wanted to know. A turbine spinning water is connected to a block of metal with a strain gauge on it. The water is recycled from a tank. All the other videos are titled "How a dyno works" but they just show "what a dyno tells you", or they say "it measure x and transmits that data to your computer". Useless info. We all already knew that. Thanks for the great video.
Yeah, I was in the comments of another youtube video and they were arguing that "you measure torque and calculate power, oh no you don't you measure horsepower it's not calculated". Strain gages popped into my mind so I ended up here. You measure force and calculate both torque and horsepower. It's amazing what uninformed people think.
There’s another type of dyno that has the engine turning a generator whose torque can be adjusted. The generated energy heats a resistor bank outside. The resistor bank may have fans to dissipate the heat. This type of dyno can be used for long run tests.
There’s another type of dyno that has the engine turning a generator whose torque can be adjusted. The generated energy heats a resistor bank outside. The resistor bank may have fans to dissipate the heat. This type of dyno can be used for long run tests.
As an engineer i must say that 'calibrating when you think the numbers are wrong' is just silly. For any peice of machinery or tooling in use, calibration checks should always be done regularly and atleast checked before use lol. Its called sensor drift.
Poor guy. He fell victim to the producer of the show no doubt. This style of "production" needs to die off already. There are a thousand channels producing better comment with no stupid forced lines and terrible acting.
Calibration most certainly is not something you do when you "think" the numbers are wrong, as by then a plane probably fell out of the sky. The whole point of managing uncertainty is that you are confident of how big it is.
Torque is measured in lb/ft (which I believe is what you were trying to say). There are really 2 aspects to this measurement: - Pounds (how much force is being applied to the load cell?) - Feet (how far from the center of the axis of rotation is the measurement being taken?) When it comes to calibration of a dyno, you calibrate the load cell with simple weight. The length of the torque arm (or length off center of axis) is a factor that the system knows as well, and uses this along with the output of the load cell to calculate a number that's a in lb/ft. Hope that makes sense.
Yes Luis. A test can literally be 1 pull or run to record the torque and then calculate horsepower with a correction factor. The new dynos like you see do this instantaneously. A tune is many runs or pulls, and on my dyno I monitor exhaust gas temperature or E.G.T., Air fuel ratio or A.F.R., the B.S.F.C. which is brake specific fuel consumption, and I always monitor knock sensors too. You might have 10 pulls just for optimal ignition timing alone. Turbo/blower/nitrous can have a handful other parameters to monitor and adjust or compensate for. Remember Sir, the best engine builders in the world, still READ SPARKPLUGS. Read that again. The ground strap will tell you about your timing, the porcelain will will tell you about the wide open throttle fuel mixture. Not on the end of the plug, but deep down inside on the porcelain. And even a million dollar dyno can't read what the plugs understand. T.S. RACING
i wonder how they calibrate the actual weight of those bench press weight plates? Weight room plates are notoriously inaccurate, for example, just because it says 45lb in big bold letters on the plates, doesn't mean it's actually 45.00 lbs.
Anyone can buy calibrated weights online from a company with a proven reputation that is specialized in calibrated weights for industrial purposes. Those cost a lot more as the weights that you see in the gym, although they might look the same. The only difference is that the calibrated weights are fine adjusted to a specific weight at a specific temperature with a specific guaranteed tolerance.
the funniest Dino video i’ve seen is the the one that Vic Edelbrock did with his daughters in the Control Room watching and they Pranked the girls as the test got more serious and the engine was roaring they wanted everyone to listen carefully for any strange noise or possible f signs of failure and someone quietly walked in with a metal Cookie sheet and some Wrenches as the tension built up they banged very loudly on the cookie sheet and it scared the Crap out of the Girls who figured out they were Pranked right away and laughed about it with everyone else it was obvious they had all worked together for many years i forget who’s motor they were testing or why but it was a important one for Edlebrock and something the daughters were very involved in
I had to watch 8 videos on how a dyno works, none of which explained how a dyno works, to finally find this one, which actually explains how a dyno works. The graphics are perfect. They tell me exactly what I wanted to know. A turbine spinning water is connected to a block of metal with a strain gauge on it. The water is recycled from a tank. All the other videos are titled "How a dyno works" but they just show "what a dyno tells you", or they say "it measure x and transmits that data to your computer". Useless info. We all already knew that. Thanks for the great video.
Yeah, I was in the comments of another youtube video and they were arguing that "you measure torque and calculate power, oh no you don't you measure horsepower it's not calculated". Strain gages popped into my mind so I ended up here. You measure force and calculate both torque and horsepower. It's amazing what uninformed people think.
Ofn it took me 10 videos to find this Mf lmao 😭😭😭😭😭
Always trust the videos with mechanical animations that come across like a power point presentation, these types never fail to inform
Just a note to anyone reading this, not all dynos use the same methodology. So seeing this and thinking this is the correct way might be misleading.
There’s another type of dyno that has the engine turning a generator whose torque can be adjusted. The generated energy heats a resistor bank outside. The resistor bank may have fans to dissipate the heat. This type of dyno can be used for long run tests.
There’s another type of dyno that has the engine turning a generator whose torque can be adjusted. The generated energy heats a resistor bank outside. The resistor bank may have fans to dissipate the heat. This type of dyno can be used for long run tests.
The absorber isn’t absorbing torque; it’s absorbing energy. It provides resistance to torque.
Glad you got the problem worked out so the video can be viewed.
Very useful simulation video
Thank you for the knowledge
As an engineer i must say that 'calibrating when you think the numbers are wrong' is just silly. For any peice of machinery or tooling in use, calibration checks should always be done regularly and atleast checked before use lol.
Its called sensor drift.
Poor guy. He fell victim to the producer of the show no doubt. This style of "production" needs to die off already. There are a thousand channels producing better comment with no stupid forced lines and terrible acting.
Calibration most certainly is not something you do when you "think" the numbers are wrong, as by then a plane probably fell out of the sky. The whole point of managing uncertainty is that you are confident of how big it is.
Rep from the biggest company or S R in the comments section... Hmm... Tough decision.
I'm not saying Pat's a nerd or anything, but look at all that stuff in his pocket protector.
Shouldn't the torque reading be measured in poundals?
Torque is measured in lb/ft (which I believe is what you were trying to say). There are really 2 aspects to this measurement:
- Pounds (how much force is being applied to the load cell?)
- Feet (how far from the center of the axis of rotation is the measurement being taken?)
When it comes to calibration of a dyno, you calibrate the load cell with simple weight. The length of the torque arm (or length off center of axis) is a factor that the system knows as well, and uses this along with the output of the load cell to calculate a number that's a in lb/ft.
Hope that makes sense.
Can a dyno like this calculate engine efficiency as well as power output? That is...can it measure how much of the energy is wasted in heat?
If you know the power output of the engine, fuel flow rate and energy density of the fuel. You can calculate thermal efficiency.
A Dyno test is different than a Dyno tune ?
Yes Luis. A test can literally be 1 pull or run to record the torque and then calculate horsepower with a correction factor. The new dynos like you see do this instantaneously.
A tune is many runs or pulls, and on my dyno I monitor exhaust gas temperature or E.G.T., Air fuel ratio or A.F.R., the B.S.F.C. which is brake specific fuel consumption, and I always monitor knock sensors too. You might have 10 pulls just for optimal ignition timing alone. Turbo/blower/nitrous can have a handful other parameters to monitor and adjust or compensate for. Remember Sir, the best engine builders in the world, still READ SPARKPLUGS.
Read that again. The ground strap will tell you about your timing, the porcelain will will tell you about the wide open throttle fuel mixture. Not on the end of the plug, but deep down inside on the porcelain. And even a million dollar dyno can't read what the plugs understand.
T.S. RACING
So, now that you know what it reads, how do you improve on it?
Pizza.
What costed you for whole setup?
Thanks, reply is appreciated
7
Wonderfull
i wonder how they calibrate the actual weight of those bench press weight plates? Weight room plates are notoriously inaccurate, for example, just because it says 45lb in big bold letters on the plates, doesn't mean it's actually 45.00 lbs.
Anyone can buy calibrated weights online from a company with a proven reputation that is specialized in calibrated weights for industrial purposes. Those cost a lot more as the weights that you see in the gym, although they might look the same. The only difference is that the calibrated weights are fine adjusted to a specific weight at a specific temperature with a specific guaranteed tolerance.
"Calibration is a matter of faith" Jesus Fucking Christ, I'll tell that to my AS9100 auditor this year and see if he shits his pants.
Simple horsepower is rpm X torque ÷ 5252
Where does dividing by 5252 come into play?
And damn I see that’s from 4 years ago whoops
Is hard to learn to drive it ?
the funniest Dino video i’ve seen is the the one that Vic Edelbrock did with his daughters in the Control Room watching and they Pranked the girls as the test got more serious and the engine was roaring they wanted everyone to listen carefully for any strange noise or possible f signs of failure and someone quietly walked in with a metal Cookie sheet and some Wrenches as the tension built up they banged very loudly on the cookie sheet and it scared the Crap out of the Girls who figured out they were Pranked right away and laughed about it with everyone else it was obvious they had all worked together for many years i forget who’s motor they were testing or why but it was a important one for Edlebrock and something the daughters were very involved in
Archaic.