difference between bi turbo and twin turbo?
Discussion
accident said:
twin turbo would be 2 blowers the same size.
bi turbo would be 2 blowers of differing size
AFAIK there is no difference between bi-turbo and twin turbo. They both mean two turbos are attached to the engine.
Sequential turbochargers are when one is smaller than the other to combat lag etc. IIRC
The Audi S4 biturbo engine, for example, has a turbo per bank of three cylinders of exactly the same size. The 993 Turbo 4 engine is a twin turbo and again has two turbos of exactly the same size.
The Mazda RX-7 has twin sequential turbochargers.
domster said:
twin turbo would be 2 blowers the same size.
bi turbo would be 2 blowers of differing size
AFAIK there is no difference between bi-turbo and twin turbo. They both mean two turbos are attached to the engine.
Sequential turbochargers are when one is smaller than the other to combat lag etc. IIRC
The Audi S4 biturbo engine, for example, has a turbo per bank of three cylinders of exactly the same size. The 993 Turbo 4 engine is a twin turbo and again has two turbos of exactly the same size.
The Mazda RX-7 has twin sequential turbochargers.
Using your examples here quoted, you could possibly use Bi-turbo to mean, one SINGLE turbo per bank of cylinders. So although two turbos, they are ony used once per bank.
Twin turbo would therefore be two turbos linked together to power all cylinders, so there is sequential wind up between each turbo and is effectively used to give extra power as revs increase higher.
Does that make sense??
My head is hurting 
The sequential thing refers to using a small turbo and then a larger one which have different boost characteristics.
Bi-turbo means two turbos. Not two induction pipes! Many V or boxer engines have a single turbo and multiple pipes.
I am sure the distinction between bi- and twin is basically non-existent, but good theory
The sequential thing refers to using a small turbo and then a larger one which have different boost characteristics.
Bi-turbo means two turbos. Not two induction pipes! Many V or boxer engines have a single turbo and multiple pipes.
I am sure the distinction between bi- and twin is basically non-existent, but good theory
The Supra and RX-7 sequential setups actually use the same size turbos. Below a certain RPM they just use one turbo, and switch to two at high RPM. The F40 uses turbos of differing sizes but I can't remember whether it switches turbos or just uses both.
re the original question, the difference is just nomenclature. That's all.
re the original question, the difference is just nomenclature. That's all.
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