Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
Location: West Los Angeles and Rancho Palos Verdes
13,583 posts, read 15,659,695 times
Reputation: 14049
Advertisements
When a turbo isn't spinning, does air still pass through the turbo to get into the engine or does air go directly into the engine after passing through the air filter?
there is plenty of clearance for air to get by the impeller and into the intake tract. that said however, when the engine is running, even at idle, the turbo is spinning due to the exhaust gases pushing on the turbine wheel. at that point the compressor wheel isnt spinning fast enough to create boost pressure though.
Don't confuse a 'turbo'-charger with a 'super'-charger.
A super-charger is spun as fast is desired by some kind of motor.
A turbo-charger is spun by the exhaust gasses blowing past impellers, which are connected by a shaft to the impellers that compress the intake gasses. It may have a waste-gate that allows some intake to bypass the impellers when the boost isn't needed as much, but the shaft will be spinning anytime the engine is on.
Don't confuse a 'turbo'-charger with a 'super'-charger.
A super-charger is spun as fast is desired by some kind of motor.
A turbo-charger is spun by the exhaust gasses blowing past impellers, which are connected by a shaft to the impellers that compress the intake gasses. It may have a waste-gate that allows some intake to bypass the impellers when the boost isn't needed as much, but the shaft will be spinning anytime the engine is on.
The older-style turbochargers had wastegates, and mechanics still refer to the "wastegate" on turbos that actually do not have them. The current technology is the variable-geometry turbo (VGT) or variable nozzle turbo (VNT). The turbo runs at a constant speed (up to 100,000 RPM), but the vanes open or close to provide more or less boost as required.
When a turbo isn't spinning, does air still pass through the turbo to get into the engine or does air go directly into the engine after passing through the air filter?
What do you mean? If the engine is running the turbo is spinning. It may not be spooled up but it's spinning. The only way it's not spinning is if the engine is not running
Location: West Los Angeles and Rancho Palos Verdes
13,583 posts, read 15,659,695 times
Reputation: 14049
Quote:
Originally Posted by Electrician4you
What do you mean? If the engine is running the turbo is spinning. It may not be spooled up but it's spinning. The only way it's not spinning is if the engine is not running
I did not understand the difference between spooled up and spinning -- I believed they were the same thing until just a few days ago.
Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.
Detailed information about all U.S. cities, counties, and zip codes on our site: City-data.com.
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
