Whats the differance??.....some cars have Kommpressor on the rear....Is this related??

Supercharger (kompressor) is belt driven, turbocharger is driven by exhaust gases

Check out Howstuffworks "How Turbochargers Work" and Howstuffworks "How Superchargers Work"

Chris

Surpercharge is a turbine like a turbo charger but powered by the cambelt. As the turbne spins it sucks air into the engine. More air plus more fuel = more power.

A intercooler is like a radiator for the charged air (so turbocharger or supercharge) As the charger gives of heat it warms the air being sucked in. The intercooler simply cooler the air down. Cooler air is more dense. So more air. More air plus more fuel = more power.

Hope that helps

Think Knompressor is german for supercharger?

yup , kompressor is German for supercharger...

without wanting to go the pros and cons of each type, there are different types of supercharger.

the four main types are Roots, Screw, Vane, and Centrifugal. the kompressor stuff as fitted to the mercedez is an Eaton M62 Roots Supercharger... they produce lots of boost at low speed(unlike a turbo) but they run out of puff beyond 10psi...

the charger doesn't so much give off the heat as the act of compressing the air creates heat energy

pump up a bike tyre and see what happens to the shaft of the pump

Or you can have both if you like

Indeed.

VW used to use a G-Lader compressor, and it was somewhat poo.

the g-lader..... mmmmm

they are actually really good, they are the most efficient type of supercharger ever made for a road car.

the do require servicing/overhauls quite frequently tho..

This is what you get when the little belt breaks plus a handfull of alloy dust in the bottom of the casing.....

i totally stripped and rebuilt the one on my brothers corrado g60 twice, you can normally buy a set of seals/bearings as a kit from vw, the common thing to go wrong on these is a loss is boost pressure caused by low-by in the apex seals.... the other thing to note on these too is that the bearings shouldn't be pressed in cold, you need to warm up the casing with a gas-axe first....

without wanting to go the pros and cons of each type, there are different types of supercharger.

the four main types are Roots, Screw, Vane, and Centrifugal. the kompressor stuff as fitted to the mercedez is an Eaton M62 Roots Supercharger... they produce lots of boost at low speed(unlike a turbo) but they run out of puff beyond 10psi...

Eatons are fitted to Jags, MINIs etc. They're a roots type. This type isn't known for efficiency...

Centrifugal ones (vortech?) use turbo compressor technology, screw ones (lysholm screw - sprintex etc.) are far more eficient and sized correctly remain efficient at higher boost*revs combinations.

Of the lot, screws and centrifugals are the way to go. Eatons seem the most numerous, cheap and easy to get hold of though. Mazda run (or did run) a lysholm screw blower in a 2.3 litre model in the USA.

J.

A supercharger works on a more or less constant temperature compression cycle (adiabatic? It's about 25 years since I did this stuff formally).

A turbocharger works on a more or less constant volume compression cycle, which heats the gas being compressed, which means that you need an intercooler (more formally chargecooler) to reduce the temperature again.

It still helps to have an intercooler with a supercharger, as it compresses the charge air. If you compress air, it will heat up.

Hence my use of "more or less" since I was talking about real-world cycles rather than idealised pressure-volume-temperature cycles. I studied thermodynamics at college, but, as intimated, I've not actually used them since.

Eatons are fitted to Jags, MINIs etc. They're a roots type. This type isn't known for efficiency...

Centrifugal ones (vortech?) use turbo compressor technology, screw ones (lysholm screw - sprintex etc.) are far more eficient and sized correctly remain efficient at higher boost*revs combinations.

all of the above is true, but the eatons have one main thing over the rest.... normally (except in the sace of the mini) they have a n electromagnetic clutch on the drive pulley so that is only engaged when required, the rest of the time while cruising and at light engine loads the supercharger pulley just freewheels and thus doesn't eat up any power......

and whilst we're on the subject of effieciency, the vane type ones are even better.... in fact rollys royce did tons on development on the vane supercharger during WWII for the merlin aviation engine, but in the latter stages of the war they went over to a dual stage roots charger because they are cheaper and easier to manufacture.