Idea to eliminate turbo lag..., ...or am I crazy. Options

[biglipzit]

Now i had a major question for anyone affiliated with what twin charging really is... If a supercharger compresses air... wouldnt it also further compress already compressed air? Is it necceasary to stop the supercharger when the turbo spools up and begins making boost? I dont understand why you cant just leave the supercharger spinning so that when u accelerate you get instant boost from the super charger and then as the turbocharger spools up and makes boost then u just get more boost as the super charger further compresses the boost made by the turbo.. Theoretically wouldnt it be a 2 stage compression for the engine? I know Aircraft turbojet engines uses different stage compressors to further compress the air for combustion but why not use it in a car instead of going through the complex task of stopping the supercharger after spool up from the turbo.

[saleeka]

buy twin setup do you mean a turbo and a supercharger? the only car that i know of to have that was the lancia delta S4, and its ULTRA rare

[Hanyo]

Now i had a major question for anyone affiliated with what twin charging really is... If a supercharger compresses air... wouldnt it also further compress already compressed air? Is it necceasary to stop the supercharger when the turbo spools up and begins making boost? I dont understand why you cant just leave the supercharger spinning so that when u accelerate you get instant boost from  the super charger and then as the turbocharger spools up and makes boost then u just get more boost as the super charger further compresses the boost made by the turbo.. Theoretically wouldnt it be a 2 stage compression for the engine? I know Aircraft turbojet engines uses different stage compressors to further compress the air for combustion but why not use it in a car instead of going through the complex task of stopping the supercharger after spool up from the turbo.
[right][snapback]229437[/snapback][/right]

you got the concept right.. the supercharger creates boost when you first start off. Then when the turbo creates boost, the supercharger turns off. You ask, "why not leave the supercharger on?" well the reason is.. a supercharger will take horsepower away from the engine when it creates boost. The turbo itself is good enough to deliver the boost you need, so there is no point in pressuring the pressurized air. (like how you wanted to pressurized the air from the turbo with the supercharger) There are large turbos out there that can create 20+ psi of boost and that is more then the average joe would need.

[shid]

Now i had a major question for anyone affiliated with what twin charging really is... If a supercharger compresses air... wouldnt it also further compress already compressed air? Is it necceasary to stop the supercharger when the turbo spools up and begins making boost? I dont understand why you cant just leave the supercharger spinning so that when u accelerate you get instant boost from  the super charger and then as the turbocharger spools up and makes boost then u just get more boost as the super charger further compresses the boost made by the turbo.. Theoretically wouldnt it be a 2 stage compression for the engine? I know Aircraft turbojet engines uses different stage compressors to further compress the air for combustion but why not use it in a car instead of going through the complex task of stopping the supercharger after spool up from the turbo.
[right][snapback]229437[/snapback][/right]

you got the concept right.. the supercharger creates boost when you first start off. Then when the turbo creates boost, the supercharger turns off. You ask, "why not leave the supercharger on?" well the reason is.. a supercharger will take horsepower away from the engine when it creates boost. The turbo itself is good enough to deliver the boost you need, so there is no point in pressuring the pressurized air. (like how you wanted to pressurized the air from the turbo with the supercharger) There are large turbos out there that can create 20+ psi of boost and that is more then the average joe would need.
[right][snapback]230880[/snapback][/right]

Not all superturbos work like that, only the very well made ones. its very hard to just turn the supercharger off; many turbo super setups keep the superchagrer running but switch the air intake to the turbo pipe (think of a parrellel train track that momentarily branches off)

[biglipzit]

Now i had a major question for anyone affiliated with what twin charging really is... If a supercharger compresses air... wouldnt it also further compress already compressed air? Is it necceasary to stop the supercharger when the turbo spools up and begins making boost? I dont understand why you cant just leave the supercharger spinning so that when u accelerate you get instant boost from  the super charger and then as the turbocharger spools up and makes boost then u just get more boost as the super charger further compresses the boost made by the turbo.. Theoretically wouldnt it be a 2 stage compression for the engine? I know Aircraft turbojet engines uses different stage compressors to further compress the air for combustion but why not use it in a car instead of going through the complex task of stopping the supercharger after spool up from the turbo.
[right][snapback]229437[/snapback][/right]

you got the concept right.. the supercharger creates boost when you first start off. Then when the turbo creates boost, the supercharger turns off. You ask, "why not leave the supercharger on?" well the reason is.. a supercharger will take horsepower away from the engine when it creates boost. The turbo itself is good enough to deliver the boost you need, so there is no point in pressuring the pressurized air. (like how you wanted to pressurized the air from the turbo with the supercharger) There are large turbos out there that can create 20+ psi of boost and that is more then the average joe would need.
[right][snapback]230880[/snapback][/right]

Not all superturbos work like that, only the very well made ones. its very hard to just turn the supercharger off; many turbo super setups keep the superchagrer running but switch the air intake to the turbo pipe (think of a parrellel train track that momentarily branches off)
[right][snapback]230895[/snapback][/right]

What is the point of that when u could just leave the air going through the supercharger... i mean even if it is just spinning and not doing anything, it is still sucking HP so u might as well save money on a small turbo and double boost the air to add extra pressure. But i doubt stopping the supercharger is so hard. I am sure you could get an electromagnet brake from an A/C compressor and mount it on the supercharger and then use a waste gate caliper or whatever the thing that opens and close it is called to switch on and off the electromagnet when max boost is reached... doesnt that make sense?

[shid]

Because if the super charger pumps air into the turbocharger (like if you have it all on one pipe) you'll destroy the turbo. And actually the setups that do turn the turbo off use an electromagnetic clutcch.. maybe.. or something cool sounding like that