A turbocharger is a two piece housing. Cast iron on the exhaust side and aluminum on the intake side. Inside this housing there are two precision scroll shaped fans mounted on a common drive shaft divided in the center by a cast iron wall with bearings in the center and on the ends.
On the cast iron side the hot exhaust gasses spin this fan at incredable rpm's anywhere between 8,000 -20,000 in racing applications. On the aluminimum intake side the fan gathers incomming atmospheric air where it is pressureized creating heat. This hot pressurized air through manifolding is forced through an inner-cooler to reduse the compressed air's temperature. This is very inportant because compressed hot air pressure does not have the same amount of oxygen in it as does cooler compressed air.
We all know the more oxygen present in air supports combustion more efficiently.
Inner-coolers are much like an automotive radiator. Some are air to air, others have water from the engine block circulating through cooling fins to reduse the pressureized air's temperature before entering the intake manifold and eventually the cylinders when the intake valves open.
Now torque and horsepower. I'm sure you've heard of waste gates and manifold pressure. Automotive engineers design turbo chargers to produce intake manifold pressure within design parameters of a given engine. Therefore the wastegate is designed to pop-off the compressed air if it is excessive. It may be between15-22 psi. in an automotive applications. Turbochargers are so efficient at filling the cylinders with pressurized aair that combustion efficiency increases dramatically. This adds horsepower and torque. Actually more fuel isn't necessary in this case to raise the torque and horsepower. It only the fact that all combustion cylinders and chambers are being packed with oxygen filled air under pressure aid the more complete combustion process.
We had a bone stock 4 cylinder 50 horsepower Case diesel tractor in the mid 60's which we added an M&W turbocharger. The added horsepower and torque enabled us to add another plow bottom on our 3 (number of plow bottoms) x16" set of plows. The gang of plows were now 4 x 16" bottoms. It would pull this set of plows easily in the same gear as before. Now this will be hard to believe but when using this tractor under light working conditions it actually used less fuel. We figured at the time that the turbocharger raised the combustion efficiency so that not as much throttle was needed to do the same amount of work. Many times we shifted into a higher gear, used less throttle and used the added torque of the motor do the work.
Every diesel tractor after that had a turbocharger and inner-cooler form the fastory.
2007-08-29 02:05:11
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answer #1
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answered by Country Boy 7
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Ok, a turbocharger is basically a spinning wheel shaped like a corkscrew fan, it is driven by the exhaust gases from the engine which drives a similar fan that draws in air more rapidly and blows it into the engine. A turbocharger increases the pressure of air into the engine, more air means more fuel so more power, it increases yor power, never decreases. An Intercooler is basically a radiator for Air, the turbocharger blows the air into the intercooler, it goes into the intercooler and the rushing air while u are driving will cool it before it goes into the engine. The Turbocharger gets very hot so the air for the engine must be cooled to avoid detonation or pre ignition.
2007-08-29 01:59:44
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answer #2
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answered by Roland d 2
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Turbos use the 'hot' exhaust pressure to blow more pressure into the intake ( where the engine gets it's air/fuel mix). On the other hand, 'super chargers' are turned by the engine via belt & add air pressure to the intake and are much more dependable. Turbos get so hot, the bearings usually burn out after a much shorter term than 'super chargers'. The 'inter cooler' thing is probably some car maker's idea that cools the turbos to make the bearings last longer.
2007-08-29 00:37:51
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answer #3
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answered by Mack 5
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Turbocharger:
Its a device which is particularly used in diesel engines or compression ignition engine, it has a turbine and a compressor coupled in the same shaft, the exhaust gases from the outlet valve of the engine makes the turbine to rotate and that inturn rotates the compressor which is coupled with it, this inturn compresses the air which is supplied to the inlet of the engine.
the incoming air is compressed in the compressor of the turbocharger and gets compressed again in the combustion chamber, there by almost doubling the pressure of the air, the more the pressure of the air, greater is the power obtain per stroke thus increasing the overall performance of the diesel engine.
There is another device called the Supercharger, which does the same function as that of a turbocharger, but it is directly connected to the crankshaft of the engine instead of using a turbine to rotate the compressor, the only difference between Turbocharger and a supercharger is that , turbochargers works after some amount of time after the start of the engine because it works on the exhaust gases while the superchargers start to work with the start of the engine itself....
2007-08-29 02:33:25
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answer #4
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answered by Anonymous
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A turbo has two turbines. One is driven by exhaust gases, which in turn drives the other turbine to force feed air into the engine. Extra air requires extra fuel, and the result is more horsepower. An intercooler simply cools the air headed into the engine. Colder air is denser air, which means more oxygen, and means even more fuel can be dumped in. The more fuel and oxygen you can pack into the engine, the more horsepower you can make.
2007-08-29 00:25:04
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answer #5
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answered by ERIC E 4
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the inter cooler is a form of radiator to cool the air which is going to be forced into the engine , it is not used to cool air for the berings as that is why turbo's have an oil feed. the forced air that runs through the turbo into the engine raises the compression.and when the fuel is ignited by the spark plugs because of more compression the bang is bigger.making thestroke of the piston come down harder.meaning farster rpm, turbo's them selfs will not incres fuel consumption.
2007-08-29 00:54:25
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answer #6
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answered by trandru 3
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