Concept in Definition ABC

That “sensation of emptiness" or that "Feeling of no response from the turbo" is what we know as Turbo Lag. But... it is neither one thing nor the other (or rather, it has its explanation).

The Turbo Lag is actually the delay in the turbo response until it reacts with effectiveness. More precisely it is that period of time that elapses between pressing the accelerator until the increase in pressure is concretely translated into the feeding. Therefore, for a few seconds there are those who feel that "Lack of response" and they feel that the turbo does not respond or directly that they do not have turbo.

The explanation for this phenomenon is quite simple: when the gases exhaust product have to overcome the inertia of the turbine especially when you are with the stopped vehicle or is it circulating at very low revs, then the functioning of motor very little affected by the action or presence of the turbo.

We will also explain it this way: when the engine turns at a low rpm

per minute, when the turbine ultimately turns slowly, the engine feels like it's not turbocharged. This stops happening when the velocity necessary so that the air of admission.

In some large engines, or those with a very large turbocharger, moving the turbine is very difficult when it is stopped or walking slowly and the gases need to cope with a very strong inertia. To solve this issue, turbochargers are used that are getting smaller and smaller., built with much lighter materials, but fundamentally very resistant to heat (titanium or ceramic for example), or the so-called turbochargers of geometry variable.

Until not long ago, in cars with large turbochargers, it was necessary for the driver to have to step on the accelerator more than necessary to avoid feeling that "Lack of turbo response" or what is the same: that Turbo Lag.

Topics in Turbo Lag