CVT (Continuously variable transmission) is a type of an automatic transmission that is commonly utilized in passenger cars. We will consider the structure and principle of operation of this gearbox on one example.
Your video is a piece of art, and this is the first time I watched your channel. Ninety percent of RU-vid content is just a click bait with fake knowledge, but you made my day by showing this.
Love them, hate them, or indifferent towards them, you've got to admit it's an extremely clever design to conceive. Engineers are some very clever people.
thank you for preparing this video. the graphics were outstanding. I acknowledge the time it took to create the video. your efforts are appreciated thanks. 123
Nissan Note 2006, bought at around 50,000km traded in for another one (only 2009) at 361,000km, no transmission issues whatsoever. That was a lot of long hot miles, proper, timely oil and transmission fluid changes plus sparkplugs etc. Got around 100,000km from one set of front brake pads. Took the time to understand how cvt works internet videos were excellent, and drove it that way. Found it a very relaxing and rewarding experience, even over demanding terrain with two three, or once four hitchhikers and their backpacks crammed in. Follow the Designer's handbook, guys. And far more importantly, the same applies to your own body.
As a mechanic, I can tell you these are our #1 money maker in the shop. Its a golf cart technology that was implemented into 4000 lbs vehicles. They can be reliable to a degree if you drive like my 80 year old grandma. Slow acceleration, speed limit and no sudden acceleration. The problems surfaces when people drive them like traditional gear transmission. They're not built to handle that. Car manufacturers like them because they are cheaper, lighter and get slightly better mpg so they can advertise for it. I personally would not buy a car with a CVT.
On a very basic level it is a very simple idea at work; two sets of moving plates with chain/belt that mimic gears/sheaves of different sizes, that can change speed ratios between driving and driven side.
@@spol1622its hard to understand without seeing it with your own eyes and being able to touch the parts. i dont get it through a video, your words are like a foreign language
Excellent explanation video, I always wondered how the diameters changed, didn’t realize it was ramping up and down to the fixed side pulley. That’s gotta be hard on that belt after 100K miles of hard driving.
Wonderful video!! Please please make a video on the Torque Converter along with the actual transmission system.🙏🏻🙏🏻 I've seen quite a few animated videos that explain Torque Converter in depth but never tell you what is before and after it -- as in how the actual shifts happen in a 6spd TC, how the transmission reacts when vehicle comes to a stop, etc.
I have a 2017 Honda with the CVT. There is a little lag when starting out, but not that bad. I also have a 2023 Lexus and they improved the transmission by adding an electrical assist. There is no noticeable lag, and if you floor it, it takes off immediately. I rented a 2022 Nissan with a CVT and it was junk. You could feel the car slowing and accelerating while keeping the gas pedal steady. Sometimes when coasting to a stop, it felt like the transmission was holding back the car. I was glad to return it to the airport.
makes sense why most car makers went to cvt, less complicated cheaper to make resulting in cheaper cars to sell to the public. Since this thing uses a hydraulic like lever system to change gears it makes sense to constantly change the transmission oil more times than the engine oil.
I wonder why the chain does not slip on the shafts canals when torque is applied. They seem to me pretty polished from inside and they are submerged in oil.
CVT requires careful maintenance which is to change the fluid every 30k km to 50k km the change must be complete with filters, another is the oil temperature must be below 90°C to have derabilidad, bad for the cvt which does not have a belt replacement part This means you have to change all gears and depending on the country you live in, the cost of a new one is very expensive.
my 2016 honda civic 1.8NA engine, hit 159000 km last month, the cvt belt breaks... cost me RM19000(roughly around 4000 usd ) in honda service center, they actually just replace it with a new gearbox i repaired it in outside workshop for just RM3500( roughly around 800USD), they replaced the broken belt and reworked the torque converter
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i have a question: i've heard that most of the failures on cvt is on the belt, and the preventive action is to take care the transmission oil. based on what i learned that this is PUSH belt, and based on ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-PQHVLH8jVc8.html, is the cause of the failure often that the moveable halves did not move simultaneously, causing the 2 rings of belts slips out and made the links (elements) fall off? i've always assumed that the belts break because they were overstressed by the pulley
Great video!! My question now is, if they(mfgs) can do this for a 3000lb car, why don't utv or atv mfgs do this for their off road products?? Polaris only just started the metal drive belt, but why is there no low gear that automaticly shifts into a high range like Toyota does?? Umm so many questions. 🤔🤔🤔
Soon our video course will be released and there will be a video about manual transmission. Unfortunately, we will not put this video on the channel in the near future:(
Hey guys I have a 2019 Honda civic I just hit 90k any tips ?? I know I’m gonna get some sarcastic answers but any REAL advice ? I love the car and would love to ride it out if I can get to st least 200
I'd love to, but there's no way to release videos more often at the moment. Our video course will be released soon - there will be more of our videos there.
The belt changes diameter (that's not right, but you know what I mean.) That's how the torque is adjusted. It doesn't have to change gears to change gear ratios.
Les voiture Toyota n'utilise plus cette technique qui est devenue ancienne. Maintenant on la E-cvt qui utilse des engrenages, elle plus fiable et l'effet moulinette a presque disparu.
I'm not impressed at what's for sale out there these days for new vehicles. Turbos and CVT's, AWD/4WD systems, cylinder deactivation, VVT and poorly designed timing systems, low tension piston rings/oil burning, and complicated hybrid systems that are all maintenance nightmares. And if that's not bad enough, the electronic monitoring of your vehicle and how you drive in the name of "safety", the disabling of functions on your car unless you pay for a subscription (Toyota remote start) are becoming commonplace. You can keep it all.
CVT is a naughty name.It has created lot of trouble for many drivers ! I would never buy a car with a CVT transmission.I prefer a manual transmission!There is a TCT and DSG automatic transmission more reliable. DSG is often found in VW products and TCT in others .
Very simple and clever concept but not new. This concept has been in use in farming equipment for quite some time now. However the car makers do not have it perfected yet and I consider these in a car....junk. If you drive like your grandmother then you might be good for a while. However if you drive in a way that most consider normal then your CVT will not last. I would not own one.
Great explanation and intuitive video, but CVT's are just not feasible in my opinion. There is too much going on and too many computers involved; no wonder they fail so often. There is no way that this option is more efficient than a standard automatic transmission. Nonetheless, great vid!
