Why twin turbo

Current engine management technology together with the latest control hardware has almost totally eradicated turbo-lag. Hence, the added cost of two turbochargers, with its additional intake air ducting and sequence control, makes no sense today.

Now this says nothing about the number of turbos used. In order to separate the exhaust pulses to prevent gas-flow interference, the exhaust tracts of consecutively firing cylinders are separated all the way to the mouth of the turbine.

Twin-scroll turbochargers offer higher levels of gas-flow efficiency, reduced turbo-lag and allow engines to be tuned for slightly more power than the single-scroll variety. Even the BMW inline-6s no longer need a pair of turbos, relying instead on a single twin-scroll system. For a V6, a twin-turbo arrangement works well, especially if there are space constraints under the bonnet.

However, this must be weighed against the added cost of having two turbochargers and associated double-components such as the intercoolers. Unless the objective is very high power output, a single turbo setup is cheaper and is still capable of providing the necessary airflow for something like a 3-litre V6.

With V-engines of eight or 12 cylinders the twin-turbo design is preferred mainly because the cost of a second turbo is less of a factor in the overall engine cost. Also, the issue of space becomes more critical requiring the supercharging network to be separated allowing for far simpler packaging. However, this is not why they are chosen. Smooth, lag-free and efficient performance, along with packaging benefits are the overwhelming reasons designers opt for two turbochargers in V-engines.

Multiple turbos are nice to have if they are easy to install in the engine bay and offer the possibility of employing two smaller units with lighter turbines that spool up faster to provide boost from as little as rpm.

The problems as we mentioned are mainly the issue of cost. But there are also issues of maintenance with mileage due to the multiple components. With more parts to wear and hence replace over time, the cost of running an aging twin-turbo engine could be quite frightening. Take a closer look at how turbocharged engines work and get answers to the question — what are the differences between twin turbo and biturbo engines — with this in-depth overview.

Visit the Autos of Dallas inventory today to experience turbocharged performance! This entry was posted on Friday, February 9th, at pm and is filed under Car features , F.

You can follow any responses to this entry through the RSS 2. Both comments and pings are currently closed. All New Used.

Used Inventory. Sequential Twin Turbo Engines — Powertrains that employ sequential twin turbochargers rely on two turbochargers of different sizes. A smaller turbocharger works with lower exhaust flow and supplies more power at lower rev rates. As you accelerate, a second larger turbocharger builds more power with a compression valve that allows the larger turbine to create more power at the higher end of the spectrum. Turbochargers are turbine-driven devices that take air from the exhaust and pump it back into the combustion chamber, giving the engine more air intake than it would naturally receive resulting in enhanced performance torque and efficiency.

Three-Quarter Ton vs. Full-Ton Trucks. Twin turbocharged engines contain two turbochargers, but the type of twin-turbocharged engine varies depending on configuration. There are two types of twin-turbocharged engines—sequential and parallel. Engines are not limited to a maximum of two turbochargers. In fact, some engines are quad turbocharged, meaning that they have three or four turbochargers working to enhance performance. These systems are especially useful on V12 or V16 engines.

We offer a vast selection of pre-owned vehicles ranging from sedans to pick-up trucks to motorhomes and nearly every body style between.

If you have any questions, please let us know! We hope to see you soon!