Electric superchargers

[astravanman]

Anyone got any thoughts on electric superchargers. found a web page by accident never heard of them

 

[MasterAuron]

Avoid.

 

[pgarner]

search this site and youll soon find out thoughts about them on here.

basically there no way off making a fan that will move enough air quick enough to make a real difference.

think about lets say your engine is 50% efficient so a 2ltr would use 1 ltr every revolution. now sitting at 3000 rpm that means it would have to move more than 3000 ltrs a minute to make a difference.

now ether the motor will burn itself out and make itself a restriction in the airflow. or worse fall to bits then have plastic or metal blades trying to get into the cylinders

 

[astravanman]

Just noticed similar threads thought it sounded a bit too good :}

 

[pgarner]

it usually is,
the theroy on them great but theres no way of gettin enough power from 12v fan. 240v industrial fans yeah great but how to power them ? inverters will put a strain on the engine and cause a loss in power

 

[turbonutter69]

Yep as already said too good to be true. Avoid them buddy and get a proper supercharger upgrade.

 

[HDi fun]

Don't bother - you're likely to send shards of disintegrated fan blades in the engine. They're about as effective as it would be trying to inflate a balloon by holding the open neck in front of a desk fan.

 

[coupe]

They're about as effective as it would be trying to inflate a balloon by holding the open neck in front of a desk fan.

oooh i must try that today.:toung:

 

[pgarner]

this is what you want
not much use in the diesel however

 

[Twamgl3]

this is what you want
not much use in the diesel however

I'll take it!

 

[HDi fun]

Is that a belt driven supercharger?

 

[pgarner]

yup

 

[HDi fun]

Thought so because of the Pulley.

It's going to be a hell of a job to fit this to a diesel car because of the massive change in injector duration and dwell which will be required.

 

[pgarner]

yeah thats why i said not really suitible for the diesel. but might be better for the mazda / probe that hes got.

should have said its an M45 - eaton supercharger thats fitted to mini cooper, small mercs and our own claymores fiat

 

[HDi fun]

MB has got really carried away with the Kompressor petrol models. THere has to be a good reason for them. Turbo-superchargers aren't everything. A lagless less mechanical blower might be an interesting proposition.

I know that railway diesels often use mechanical superchargers as the engines run basically at fixed revs. Same with marine engines.