Motoring Masters

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@paullelys161 2 күн бұрын

So be careful and don't hit those concrete stoppers in the car park or the curb as it can knock the wheels out of alignment and cost you money. I need to get mine done the front are wearing badly on the outer edges. Needs a lot of work and tyres all round. Doesn't help with the poor road surfaces around here even after they do a terrible job patching things up. Perhaps I'll send the bill to the local government and they can pay.

@joyontaroy7053 5 күн бұрын

Thank you

@fifaonly560 5 күн бұрын

Best

@TRYTOCHALLENGME 5 күн бұрын

Instagram?

@ilandgood 6 күн бұрын

5:05 chinese car

@Gamen4Bros 7 күн бұрын

24C° is stupidly hot for in your car hahah. Why not 19 to 21?

@Gamen4Bros 7 күн бұрын

Tesla is amazing. Screw the haters🔥🔥

@MrRask99 7 күн бұрын

а угол акурмана не нужно упоминать?

@billblonco 8 күн бұрын

when the Supermanifold goes bad its expensive to fix

@mikecronis 8 күн бұрын

Lucid's is better.

@Mladjasmilic 8 күн бұрын

Mitsubishi iMiev has water based heater from ICE model, with electric heater iside overflow tank and water pump, instead of havimg PTC hester. But it males super easy to instal diesel heater.

@Mladjasmilic 8 күн бұрын

Renault Zoe AC circuit is set up like this: AC pump Cabbin heater core Outside evaporator/condenser (there is a bypass valve) Internal cooler evaporator (with bypass valve) Battery cooler PTC heater for some markets Zoe can at the same time cool and heat air for maximal defrost effect.

@HelloAmDog 9 күн бұрын

Please tell me that thumbnail is NOT AI…

@RisyadHasbullah 9 күн бұрын

Using speech to text voice makes the video not engaging, it’s a distraction 😢

@ednauseum3060 9 күн бұрын

Really SAD that Legacy ICE mfrs force people to use 100-year-old technology... Really NICE that Tesla re-invented the Legacy antiquated POS engineering

@JG_UK 10 күн бұрын

Tesla’s heat pump takes far longer to produce heat compared to resistance heater. The octovalve introduces many points of failure

@ourv9603 10 күн бұрын

YEARS AGO, In the early days of automobiles before the engineers figured the current coolant heating system out, what was done was they ran the exhaust pipe which is nearly RED HOT into the cabin & under the dash radiating heat to the passengers. Dont stretch your legs too far under that dash of you will get burned from that hot pipe! Problem with that system was it was ON always. Even on a hot summer day. Yeah, those were the days... !

@lifeofbassman7228 10 күн бұрын

Multi engine planes environmental systems are funny. Most piston planes use heat off of the engine like a car. The BE-76 duchess has 2 engines and uses neither of them to heat the cabin. It uses a combustion heater. It is located in the nose. It is basically a a tube with a coiled tube in it. Aviation gas flows through the coiled tube and is ignited by a spark plug and this heats the tube. Then there is a fan in the larger tube that blows the hot air to use as a heater. Creative on beechcrafts part.

@dimitry1238 10 күн бұрын

lmao the way you start the video "Imagine its a cold winter morning" I don't have to imagine it I woke up to 12 degrees and having to go to work in the freezing cold I'm dealing with the cold winter morning right now

@Sepi002 10 күн бұрын

The Octovalve is for the coolant system but it's not connected to the cabin heating. Cabin Heating is exclusively made with the Heat-pump(Supermanifold). So what are you said it's not 100% right :)

@motoringmasters 10 күн бұрын

The Octovalve primarily manages the coolant system, but it plays a critical role in both heating and cooling the cabin by efficiently routing heat or cool energy between various components and the HVAC system. The Octovalve works as a dynamic controller, receiving heat from major components like the battery pack, drive units, power electronics, and even the heat pump compressor. In heating mode, this waste heat is routed to the heat pump and Super Manifold to warm the cabin efficiently. When switched to cool AC mode, the Octovalve directs coolant to dissipate heat from the cabin through the condenser, ensuring cool air flows into the cabin. At the same time, it manages heat rejection from components like the battery and power electronics, keeping them within optimal operating temperatures. Essentially, it balances heat distribution throughout the system based on real-time needs, whether for cooling or heating. I appreciate your thoughtful comment, as it highlights the complexity and efficiency of thermal management system!

@Sepi002 10 күн бұрын

@motoringmasters No, the Octovalve just routes the coolant water between drive components. That is true that it took heat from the Refrigerant or take cool from it but for just the cabin heating Tesla uses just the Refrigerant system, if the cabin just need cooling then naturally the system will dump heat energy to the coolant system and so while just heating needed then cool energy to the coolant again from the Refrigerant but the waste heat from the inverter won't transfer to the cabin that is used to heat up the HV Battery. :) That's why I said not all wrong what you've said. I'm a Tesla Mechaniker so I know how this system works.

@salemas5 10 күн бұрын

Makes sense. My cars engine is tiny, and i need to idle 20-30 minutes to even begin to feel warm air when outside is -15 or lower

@Discriminater 10 күн бұрын

Usually with smaller engine vehicles, I keep the revs around 3k give or take

@jesse291 3 күн бұрын

If you just start driving: - you don't waste fuel and engine wear - you'll get where you are going quicker - your engine will work harder, therefore produce more heat and warm the cab more quickly.

@salemas5 3 күн бұрын

@@jesse291 tell that to fully frosted windows from outside and inside :D

@yt678901 10 күн бұрын

AC system (Heat Pump) is already available in the Electric car. Can it not be used to heat the cabin ?

@KiRiTO72987 8 күн бұрын

@@yt678901 in a lot of newer cars and higher trims it is

@m18771961 10 күн бұрын

On 2:50 it is specified that the air coming from the blower is either directed to the evaporator or the heater core, depending on the user input. That is incorrect, as air from the blower always passes through the evaporator first regardless whether the HVAC is set on full hot or full cold, as the air needs to get dehumidified before getting heated up. On Auto mode, the same HVAC control unit regulates the mixing door that lets air through the heating core or bypass it.

@motoringmasters 10 күн бұрын

Thank you for pointing that out! You’re absolutely right, the PTC heater is positioned after the A/C coils, especially for defrosting. Brands sometimes vary in this configuration depending on the climate and specific vehicle needs. For clarity in the video, I simplified the layout to avoid confusion and make it easier to follow. I appreciate your input. It’s great to have this kind of feedback to show how varied these systems can be!

@johny1220 10 күн бұрын

I was actually wondering how Tesla’s heat pump worked the other day when it was cold out. The way it does is actually insane wow lol. Tesla’s engineering is absolutely wild man..

@daniel_960_ 8 күн бұрын

Yeah instead of building in heating elements they can just run blind currents through the motors to generate heat. Pretty smart.

@Trades46 11 күн бұрын

Not mentioned is the Tesla heat pump is efficient but incredibly fragile due to their poor QC. In Canada few years back during an extreme cold snap, Teslas fancy system broke or stopped working altogether, freezing people in their vehicles. Also not mentioned - heat pumps start to lose efficiency to generate heat far below the negative celcius range. Homes using residential heat pumps resort to heat strips to make up for this shortfall, but most EV simply use a secondary PTC heater to take over the heat pump when temperatures fall far below freezing. Tesla, once again in their infinite wisdom (or just to save cost) don't HAVE a backup PTC heater with cars equipped with the Octovalve + Super Manifold, resorting to running the electric drive motor inefficiently as possible to heat up the stator & using that to heat the cabin. This would add wear & tear to your drive motor, & add replacement costs, whereas other OEMs would have electric traction motors that would last nearly the life of the vehicle. There are no engineering shortcuts, and anyone who buys a Tesla nowadays not only look stupid, but are actively funding Elon Musk and his oligarchy empire.

@MarsPLAYStudio 11 күн бұрын

Awesome video! So what did I learn? ICE engines are so inefficient (only 40% of the fuel used goes to moving the car, while 60% is waste heat) that they produce a lot of waste heat, which can be used to heat the cabin without decreasing the range, because it’s in the nature of an internal combustion engine to produce heat. Electric vehicles are so efficient that they generate almost no waste heat, so they need clever mechanics to produce heat (heat pump/Tesla using the stators of their motors to heat up the battery for fast charging, etc.). Tesla's OctoValve system is truly genius, utilizing any kind of heat produced by electric components and repurposing it for other functions within the car, wasting almost no heat generated by the components. PS: There were a lot of EVs before Tesla with heat pumps (Hyundai Kona EV, Kia Niro EV, BMW i3, etc.) so they were not the first to use heat pumps. Tesla started using the heat pump with the 2020/2021 release of the Model Y. After that, the other Model 3, S, and X followed. However, with the switch to the heat pump system, Tesla simultaneously introduced the OctoValve system and created a completely new system, revolutionizing the HVAC and thermal management systems of EVs.

@genx156 10 күн бұрын

NISSAN LEAF 👍

@williamhaynes7089 10 күн бұрын

And in electric transmission lines there is plenty of waste theere too, in generating power there is a ton of waste, in charging the battery in car there is power waste

@Reddylion 11 күн бұрын

Good video.

@terrancecloverfield6791 11 күн бұрын

The good thing about Tesla's Octovalve system is that it has multiple heat sources in a central system. The bad thing is that if this system fails, the entire car is inoperable.

@qwerty112311 11 күн бұрын

20 minutes ago: 30 mile drive in sub zero F weather in my model Y and climate took 0.8 miles at 70° with seat and steering wheel heat on.

@motoringmasters 10 күн бұрын

Thanks for sharing your real-world experience-that’s super helpful!

@minhha2452 11 күн бұрын

Does this work differently in hybrid vehicles ? Not PHEV, but hybrids ?

@Nazz-b7p 12 күн бұрын

Having my heat set to 67 F in 6-20 F weather for the duration of our winter here in the US, which here is about 6-7 months... I lose maybe 2% range over a 200 mile trip. The heat pump in a 24 Model Y is stupid effective. That's with it on Auto and usually on 'Low'. We're nice and toasty. 7 seater, 5 in car.

@rubenmocan2179 12 күн бұрын

Why can't we get the heat from battery heat dissipation.

@NoName-md5zb 11 күн бұрын

Battery doesnt heat much. Motor does. But its still not much heat, unless at very high speed

@thedumbconspirator4956 11 күн бұрын

Electric drivetrains are known for their efficiency. The vast majority of the energy generated is being driven to the wheels, not as generated heat, so basically the drivetrain produces too little heat to pipe into the cabin or regulate itself. This is unlike a gas engine which is basically a giant heater that also powers the wheels.

@NoName-md5zb 11 күн бұрын

@@thedumbconspirator4956 i wouldnt call electric motors efficient. They need to run at very specific load and speed to achieve 95+%. Yet they are more efficient even than toyotas petrol engines overally

@jonknight311 10 күн бұрын

@@NoName-md5zb a bad motor is 95% efficient at a specific speed. that same bad motor will drop to about 80% efficient outside of the optimal speed. SYN-RM motors such as those used by Tesla are highly efficient across the whole speed range. A good internal combustion engine, lets say toyotas petrol will be 35% efficient at best, and im being super nice to toyota with that number. internal combustion is comically inefficient.

@NoName-md5zb 9 күн бұрын

@jonknight311 interesting. Indeed electric motors in evs have advanced further. I am used to seeing optimal efficiency only in middle of graph.

@user-nv9fz4qp3b 12 күн бұрын

Not an EV guy, but Teslas engineering is pretty incredible.

@robertvandermolen230 13 күн бұрын

The heat pump seems overly complicated and would be prone to failure. Wouldn’t it be better to add more batteries and keep it simple?

@motoringmasters 12 күн бұрын

Adding more batteries could indeed simplify the system, but it would also increase the vehicle's weight and cost. The heat pump strikes a balance by improving energy efficiency without adding unnecessary bulk or expense. Modern heat pump systems are engineered to be robust and reliable, with minimal moving parts prone to failure. Thanks for watching and sharing your thoughts!

@terrancecloverfield6791 11 күн бұрын

Maybe someday in the future as energy densities increase that we can go back to using PTC systems. Despite the initial development way before EVs, people still buy vented clothes dryers!

@jonknight311 10 күн бұрын

the parts count is fewer than the AC system it essentially replaces. look at the pipework in a typical car with cooling and AC system and compare it to the supermanifold. Tesla's system actually has fewer failure points.

@CRPerformance1 13 күн бұрын

So you're talking about reduced range for EVs in cold temperatures. Why not talk about reduced range for gas cars? My jeep has about 350 miles of range in the summer. In the winter that drops to about 280 in the winter. That's more range loss percentage than my teslas get under the exact same temperatures, driver etc. And that range loss for the jeep costs about 15x more than the loss from my teslas.

@Tropicvalue 12 күн бұрын

No one Else has this amount of Range loss sorry thats Crazy 😂😂

@CRPerformance1 12 күн бұрын

@Tropicvalue wrong. All gas cars suffer similar range loss. The difference is that with a gas car you see an inaccure needle on an obscure scale. EVs show actual range based on history and battery capacity. Much more accurate.

@mitchharris97 12 күн бұрын

@@CRPerformance1wrong I don’t see massive range loss in cold weather all 3 cars we have are always within 1 mpg summer to winter

@CRPerformance1 12 күн бұрын

@mitchharris97 liar!

@sebastiantevel898 12 күн бұрын

My BMW X5 does not lose range to that extent.

@IqbalManauwa 14 күн бұрын

What the skibidi sync

@markus4461 14 күн бұрын

Tesla heat pumps break down a lot and often in the cold. In Northern Europe, a really high failure rate of breakage in winter. I would prefer to take PTC Tesla anytime.

@KP-xi4bj 14 күн бұрын

When do they break down, e.g. timeframe?

@Nazz-b7p 12 күн бұрын

It's -6 to -15 C here in my part of the USA for 6-7 months of the year. The heat pump has done fine . Perhaps older models suffered more? We're in a 24 model Y.

@Trades46 11 күн бұрын

This is just shitty Tesla QC in play. My Audi e-tron has a heat pump and it has been in service for almost 3 years, 0 issues. That said, range loss is a thing especially once temps drop far below -10deg C.

@JunkerOnDrums 15 күн бұрын

Is this a Tesla commercial? My EV also has a heat pump, but my EV is NOT a Tesla. Why? Will NOT support eLon mUsk with a single dollar! Incidentally, an ICE car's heating system may be efficient, but an ICE car is NOT efficient - it is inefficient and uses the available energy really poorly.

@motoringmasters 13 күн бұрын

Thank you for your comment! Just to clarify, this video is not a Tesla commercial. My goal was to explain the technology behind Tesla's Octovalve and how it works as part of their heat pump system. Tesla’s implementation is one example of how EV manufacturers are advancing thermal management, but it’s not exclusive to Tesla-many other EVs also use heat pumps, as you mentioned. You’re absolutely right about ICE cars being inefficient overall compared to EVs, even though their heating systems can be efficient. I appreciate your input and perspective-it helps keep the discussion balanced. Thanks for watching!

@selewachm 12 күн бұрын

Same! I was looking into a Tesla but then Elon went off the rails. Bought a F150 Lightning instead. 2024 Lariet. It's the first year that Ford put in a heat pump. Wonderful truck. Perfect for us.

@Crankshaft-cq1nd 16 күн бұрын

The only fault in this is that the coolant is always going through the heater core, unlike what was said at 2:19. The blend door in the hvac system determines if the air coming into the cabin goes through the heater core or not

@uabir8338 16 күн бұрын

Every 10000k/1 year seems a bit too excessive

@AlfredHakamanoenuku 16 күн бұрын

I was re gasing my 1zz aircon and it works and cold but for one day and next day I started my vehicle it's was very hot, what is the problem

@motoringmasters 12 күн бұрын

It sounds like you might have a leak in your AC system. I'd recommend having it professionally inspected to find the source of the leak.

@vincentiiramirez8185 17 күн бұрын

did not mention about A/C thermistor

@devtekve1396 17 күн бұрын

Thank you for the video! Really cool

@BluueFSD 18 күн бұрын

Great video and awesome explanation

@aware2action 18 күн бұрын

Will not the Peltier better than a PTC/Heatpump on BEVs, except for the cost🤔. The Thermoelectric Peltier produces more heat than refrigerant based cooling, but can efficiently used to heat the battery from a cold condition, while it provides instant cooling. It is easier to adapt a peltier for seat cooling and heating, coupled with the cooling tubes similar to the ones found in a modern laptop cooler. The biggest takeaway is the ability to cool or heat the seats almost instantly, with the additional heat/cooling generated can be used for battery heating or cooling. It could be complementary to the efficient but slower refrigerant based cooling system, while totally getting rid of the PTC heat system.

@Rakusan2 18 күн бұрын

Why have fridges not switched to the cheaper, smaller, and more reliable Peltier? Because it has a COP <1 while a refrigerant unit has a COP >2. COP = Heat Energy Output / Electrical energy Input. In other words it produces more heat than it transfers. It is still better than PTC heater though.