What is the equivalent turbocharged engine for a 1.5L naturally aspirated engine?
2 Answers
1.2T is equivalent to 1.2×1.5=1.8L naturally aspirated power; 1.4T is equivalent to 1.4×1.5=2.1L naturally aspirated power; 1.5T is equivalent to 1.5×1.5=2.3L naturally aspirated power; 1.6T is equivalent to 1.6×1.5=2.4L naturally aspirated power; 1.8T is equivalent to 1.8×1.5=2.7L naturally aspirated power; 2.0T is equivalent to 2.0×1.5=3.0L naturally aspirated power. Here is some relevant information: 1. Specific details: For a naturally aspirated engine, the intake pressure is approximately one atmosphere, roughly equal to 1 Bar. If a turbocharged engine has a maximum intake pressure of 0.5 Bar, it means the turbocharger provides an additional half atmosphere of pressure on top of the atmospheric pressure, resulting in an intake pressure 1.5 times that of a naturally aspirated engine. 2. Naturally aspirated cars: A naturally aspirated car refers to a vehicle equipped with a naturally aspirated engine. Natural aspiration is a type of car intake system where air is drawn into the combustion chamber without any supercharger, relying solely on atmospheric pressure. Most standard passenger cars use this method. Later, to increase engine power and efficiency, forced induction systems were introduced.
When discussing how a 1.5L naturally aspirated engine compares to turbocharged engines (measured in "T"), I believe it depends on the specific vehicle model and driving habits. For example, many family cars equipped with a 1.5L naturally aspirated engine typically produce around 100 horsepower, while small-displacement turbocharged engines like 1.0T or 1.2T can achieve similar or even higher power levels after turbocharging. This is mainly because the turbocharger increases air intake, compressing air to deliver more power, especially during mid-to-low speed acceleration. In my opinion, for daily driving, a 1.5L naturally aspirated engine might feel equivalent to a 1.0T turbocharged engine, but if the vehicle is heavier, it could feel more like a 1.2T. In practice, some economy cars, such as the Honda Civic's 1.5L naturally aspirated engine and Ford's 1.0T turbocharged engine, deliver similar driving dynamics, though the turbocharged engine feels more responsive during mid-range overtaking. It's important to note that this equivalence isn't absolute—engine tuning and vehicle weight also play a role. Overall, this can serve as a reference for power needs when choosing a car, but turbocharged engines are generally more fuel-efficient.
