Turbo lag意思

"Turbo lag" is a term used in automotive engineering to describe the delay between pressing the accelerator pedal and feeling the full effects of the turbocharger's increased power and torque. Turbochargers are devices used in internal combustion engines to increase power output by compressing air that is then mixed with fuel before ignition.

The lag occurs because turbochargers rely on the exhaust gases from the engine to spin the turbine, which in turn drives the compressor that pressurizes the air entering the engine. There is a delay in this process because it takes time for the exhaust gases to build up enough speed and pressure to spin the turbine, and for the compressor to start delivering the pressurized air to the engine.

Turbo lag can be more noticeable in vehicles with larger turbochargers, which are designed to produce a lot of boost at higher engine speeds but may take longer to spool up. To minimize turbo lag, some vehicles are equipped with smaller turbochargers, twin turbos, or variable geometry turbos, which can provide quicker response times. Additionally, some modern cars use turbocharger technologies that can spool up the turbo more quickly, such as electric turbochargers or electric assist turbos, which can reduce or eliminate the lag.