Under what conditions does turbocharging intervene?
2 Answers
Turbocharging intervention is specifically related to engine displacement. The larger the displacement, the lower the intervention RPM. Here are the details: 1. Required RPM for intervention: 1.4L displacement at 2000 RPM, 1.8L at 1500 RPM, 2.0L at 1000 RPM. Early turbochargers required the engine to reach above 2000 RPM to intervene, resulting in turbo lag. Modern turbochargers have much lower intervention RPM requirements, typically around 1500 RPM. 2. Function: The main purpose of turbocharging is to increase the engine's air intake, thereby enhancing its power and torque. When a turbocharger is installed, the engine's maximum power can increase by more than 40% compared to without one. During turbo intervention, the power output becomes more aggressive, creating a noticeable push-back sensation.
I've been driving turbocharged cars for several years, and I feel the turbo mainly kicks in when the engine RPM rises, like when you step on the accelerator and the RPM exceeds around 2,000. Suddenly, it starts working, delivering more air to the engine, and the power surges noticeably. At this point, the car feels like it's been given a boost, with a strong push-back sensation. But don't press too hard, or the fuel consumption will spike, and sometimes there's a delay—you step on the gas and wait a few seconds for the response. It's fine for city driving, but on highways when overtaking, you need to plan ahead. Remember to regularly maintain the intake system and turbo components. Cleaning out carbon deposits can make the turbo engagement smoother and extend the engine's lifespan. Otherwise, clogging can affect efficiency. In short, the engagement point varies by car but is mostly in the low to mid RPM range. Keeping the RPM stable during daily driving balances power and fuel economy.
