Twin Charger Turbos


A twin charger turbo system is the combination of a supercharger and a turbocharger. This arrangement is actually complementary, so that supercharger and turbocharger can balance each other. Both the supercharger and holset hx40 have some disadvantage. This arrangement is to compensate each other’s cons.

Parallel and series are the two types of system with twin chargers.


In parallel arrangements, one basically needs to use a diverter valve which permits both the compressors to work for the engine. In case there is no valve and both the compressors are routed straight to intake, then the supercharger will certainly try to choose the less resistant path rather than pressurizing the intake and in most cases it will start to blow in a backward direction. This is why a diverter or bypass valve needs to be used in such a way that the turbocharger emits the air till it achieves the pressure to intake the manifold. Electronic controls, which are usually costly or complex, are needed for easy delivery of the power.


It can be described as one of the common arrangement in twin charger. It is set up in such a way so that any one of the compressors, either the supercharger or turbocharger’s output device supply the inlet of another. The supercharger is connected to the turbocharger. Once the supercharger gets connected it gives pressure to the immediate manifold. But this can be done by eliminating the turbo lag. If not, then the holset hx50 cannot reach to its working speed. Once it reaches the speed, start to pressurize the air to its inlet. This actually enhances the efficiency of the induction. The pressure can also get bypassed.

Twin turbochargers are mostly used in the vehicles that go for many fashionable performances. They are mostly used in luxury cars. It actually offers a large amount of power and great acceleration.

Parallel twin turbocharger

The parallel twin turbocharger is mostly found in v designed engine which use the turbo for each reservoir of the cylinder. It actually reduces the turbo lag. The size of the parallel twin turbocharger is also smaller than that is found in the engine with a single turbo. This is due to the less exhaust gas.

Twin sequential turbocharger

A twin charger is meant for the combination of a large holset hx60 with the small turbocharger. To prevent turbo lag problems, the smaller turbocharger keeps quick response at the speed of lower engine and also helps to reel the larger turbocharger by increasing flow of the exhaust gas. But both the small and the big turbocharger needs to match each other.

There are many disadvantages of the twin turbocharger. The biggest negative of the twin turbocharger is that it has high RPM power. On the other hand, sequential twin turbos are very complex due to their design.

One thing needs to be remembered. Don’t get confused with the twin turbo charger and twin charging. Twin chargers are made of a combination of turbochargers and superchargers but that is not what is implied by twin charging.

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