Engine/Transmission (1994 - 1998) Some pics of the daily

[DCreed]

 

[Tinman]

I don't know why in the world this Idea hasn't taken off. Instant boost, instant power. The German's have their "e-turbo" now which basically does the same thing in the most complicated way possible.

 

[BLNRAY]

Detroit Diesel used this set-up for years

 

[KOG]

You don't know why no one does this? Because mechanical superchargers take power from the crankshaft, thus increasing fuel consumption. Turbos actually reduce fuel consumption. Superchargers are really suitable only for for brief bursts of power (such as Hellcats) whereas turbos are useful for continuous power due to the fuel consumption issue. Detroit Diesel 2 strokes really used the "supercharger" as a scavenger to move fresh air into the cylinder rather than as much of a boost device. The same Rootes type blower can be used as a supercharger also, but then it consumes excess power.

 

[Tinman]

Interesting. I would think a clutch system to disengage the supercharger after a certain amount of boost would help. But that adds complexity. It is hard to beat a good set of twins and that is relatively simple.

 

[JStoll]

I know a couple of folks who have stacked turbo and superchargers like that and charge temps become a big problem... best to use one or the other but its cool looking

JAK

 

[DCreed]

If done RIGHT, it works really well. Most take the easy route and run the turbo into the blower, which creates heat and consumes a lot of power. running the blower into the turbo(s) with a bypass allows the blower to operate down low, w/o working up top.