This New Turbocharger Just Changed the Game

twin turbo buy turbo variable geometry turbos so what's a turbocharger and how does it work how can you make more power out of thin air i'll show you how turbos are used in cars to increase engine power but they also help increase the engine's fuel efficiency they are especially used for trucks and diesel engines a turbocharger has two impellers on one shafter axle an impeller is simply a wheel or rotor that increases airflow one wheel is the exhaust driven turbine and the other is the shaft driven compressor this compressor wheel draws air which gets compressed before it goes to the engine what does a turbo charger look like the pistons in the cylinder push hot exhaust gas past the turbine blades this causes the turbine wheel to rotate which caused the shaft to turn which thereby rotates the compressor as it spins it draws and pushes compressed air into the cylinder for the process of combustion so how does a turbocharger increase engine power if your car has a naturally aspirated engine or n a engine when you accelerate you push more fuel into the combustion chamber but there isn't enough oxygen to burn all of it so some of the fuel doesn't get burned fully remember from school combustion is a chemical reaction and fuel ignites because of oxygen the key is the right air to fuel ratio if you don't have enough oxygen then the explosion inside the chamber isn't as powerful as it could be the mixture still combusts but without the right ratio you'll never reach the maximum power possible to solve this problem a turbocharger is needed the turbocharger pumps compressed air into the combustion chamber an intercooler cools the air which compresses it even further so it takes up less space so more air gets fed into the cylinder but in less amount of space so there's also space for more fuel so more air more fuel and now a more powerful reaction happens inside the chamber and forces the pistons to turn the crankshaft with more force even with a small engine a turbocharger can create a lot of power a turbo can increase power output 15 to 20 percent or more in an na engine in general turbocharged cars have better fuel economy and reduce toxic gases since fuel is burned more efficiently but some people believe that they don't meet published fuel economy estimates only that could be due to a driver's behavior and also the epa's fuel economy methodology so who came up with all this it was actually invented almost the same time as the internal combustion engine was designed the first mention of a turbo system dates to 1885. german engineers diesel and daimler began developing a unit that was supposed to compress air and pump it into an automobile's engine combustion chamber they were excited with the idea of harnessing energy made from exhaust gas then forcing compressed air into the cylinder it sounds simple but it took many years to do it successfully swiss engineer alfred bucky was the first to successfully inject exhaust gas into the engine to increase power and in 1911 he patented the turbocharging system in the u.s the prototype achieved a steady 120 percent increase in engine power that marked the beginning of the gradual development and usage of turbo technologies general electric began developing turbochargers in the late 1910s in 1920 the leper biplane was powered by a liberty engine with the ge turbocharger it had a service ceiling of twenty thousand two hundred feet and set a new altitude record of thirty three thousand one hundred and thirteen feet all thanks to the turbo engine in the mid 1920s turbochargers were being used on ships and locomotives in the auto industry truck manufacturers were the first to use turbochargers the first commercial turbocharger was produced in 1938 at swiss machine work sour in switzerland and the first passenger cars equipped with turbos were the oldsmobile jet fire and chevrolet corvair monza which was launched in the american market in 1962-63 by general motors a key turning point happened in the late 1970s when a turbocharger was installed on the saab 99 turbo then the first car with a diesel turbo engine to go to market was the mercedes-benz 300 sd with turbos manufacturers were able to increase the diesel engine's efficiency to that of a gasoline engine while maintaining lower emissions today turbocharged engines are especially useful in small vehicles where engine space is limited and larger engines are impossible to install but not everything is as simple when it comes to turbocharge as more exhaust gas turns the turbine wheel the higher the rotational speed and therefore more fresh air gets pumped in by the compressor wheel the exhaust gas can spin the turbine wheel up to the speed of 150 000 to 210 000 revolutions per minute to compare the rotor of a boeing 747 engine airplane rotates at 7 000 rpms see the difference this is the area where the classic turbocharger got into trouble you might think a classic turbo was able to accelerate at any moment but there's the thing imagine you're driving at a low speed and the engine is running at a low rpm in this economy mode the engine produces just a small amount of exhaust not a lot of gas to turn the turbine so the turbine speed is low which means very low air pressure is flowing into the engine cylinders and the fuel mixture isn't rich in oxygen so if you need to pass the car in front you press the gas pedal to go faster you expect the power boost but nothing happens why not that's because of turbo lag the acceleration lags instead of getting an instant boost how can you solve that the answer lies in the variable geometry turbocharger or vgt it's different from the classic turbocharger because of special guide vanes in the channel where the exhaust gas pushes through the turbine at low engine speeds the blades are positioned along the flow of gas but at high speeds they are sideways it's similar with airplanes where the propeller blades are not stationary the blades change the angle on their axi which is called the propeller pitch variable geometry turbochargers work under a very similar principle so now back to our car example when you suddenly increase your vehicle speed the guide vanes turn sideways where the flow of exhaust is moving and this helps the turbine impeller to spin sooner rather than later the end result is that it reduces turbo lag and your car can accelerate immediately ever notice how some cars are called bi-turbo where others are twin turbo what's the difference a turbocharged car is typically labeled twin turbo if it is an american or japanese mech but if it's european make it's a bi-turbo the word bi literally means two in latin so the terms twin turbo and bi-turbo are generally interchangeable that said there are different types of bi-turbo engines like parallel or sequential turbos and that's usually where the confusion lies a parallel turbo configuration uses two turbos both of the same size the point of parallel turbo charging is to reduce turbo lag it does that by using two smaller turbochargers rather than one larger turbocharger on engines with multiple cylinder banks like v engines and flat engines parallel turbos simplify the exhaust system contrast that with sequential turbocharging the engine setup uses one small turbo charger for lower engine speeds that's the primary turbo but it also uses a second larger turbo charger or both at higher engine speeds what's the purpose of the sequential setup well large turbos are limited and that they provide insufficient boost at low rpm on the other hand smaller turbos are effective at low rpm but aren't able to provide the quantity of compressed intake gas required at higher rpms but if your car can coordinate the two turbos then you can decrease turbo leg without compromising power at high rpm that's the advantage of sequential turbo charging twin turbo systems are not cheap and they're usually in high end model vehicles the aim isn't just to reduce turbo lag or even the acceleration dynamics it focuses on increasing overall performance twin turbos are essentially more efficient than a single turbocharger you can also have more than two turbos in a larger engine which is what sports cars do take the bugatti veyron for example it's able to output a thousand and one horsepower because it uses four turbos which is called quad turbocharger what is the lifespan of a turbocharged engine a turbo engine especially one that's smaller in volume regularly works to its limit with a smaller volume a turbo engine has the same power as a naturally aspirated engine with a larger volume since it works heavier loads the turbo engine wears out faster many car manufacturers claim that a turbo engine has a life of around 95 to 125 000 miles after that the compressor should be checked regularly and when necessary repair it running it for less than 185 000 miles is possible without problems sometimes an important thing is that if you don't follow the guidelines and recommendations the parts of the turbo engine may not even reach 62 000 miles turbo engines break because unlike an na engine turbos are pickier when it comes to the quality of engine oil and fuel if your turbo engine breaks down due to low quality fuel it'll cost you much more than repairing an n a engine here's another tip if you're on the road and you've been driving the car for a long time don't turn off the turbo engine immediately it's better to allow the engine to idle one to two minutes first to cool down the turbo otherwise if you turn off the ignition right away the engine oil will disappear instantly but the rotating rotor will still be spinning fast without lubrication for some time if that happens it will significantly affect the condition of the turbine that's why in some cars a turbo timer is installed which turns off the engine after a set time after you turn off the ignition a turbo timer helps preserve the life of the turbines if you like this episode please subscribe 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Channel: Scotty Kilmer

Views: 363,229

Rating: 4.8606868 out of 5

Keywords: should i buy a turbocharged car, turbocharger, turbocharger explained, how turbo works, how turbocharger works, how to turbo a car, why turbocharger is used, why use a turbocharger, turbocharged cars, why turbo is used in cars, scotty kilmer, turbo, turbo cars, turbo vs non turbo, turbo vs naturally aspirated, car turbocharger, cars, car repair, car, diy, car diy, turbocharged, here's why, here's why this new turbocharger just changed the game, new turbo, new turbocharger

Id: yOn1zeMPj4E

Length: 10min 32sec (632 seconds)

Published: Sat Dec 19 2020