What does 1.5L mean?

[LaAva]

L stands for a naturally aspirated engine, and 1.5L represents a naturally aspirated engine with a displacement of 1.5 liters. T stands for a turbocharged engine, and 1.5T indicates a turbocharged engine with a displacement of 1.5 liters. The volume of space through which the piston moves from top dead center to bottom dead center is called the cylinder displacement. If the engine has multiple cylinders, the sum of the working volumes of all cylinders is called the engine displacement, usually expressed in liters (L). Engine displacement is one of the most important structural parameters, as it more accurately represents the size of the engine than the bore and number of cylinders. Many performance indicators of the engine are closely related to displacement. Generally, a larger displacement means the engine releases more energy (converting chemical energy from fuel into mechanical energy) per unit time, resulting in better power performance. Differences between 1.5L and 1.5T: Engine type: 1.5T is a turbocharged engine with a displacement of 1.5 liters; 1.5L is a naturally aspirated engine with a displacement of 1.5 liters. Power output: For vehicles with the same displacement, the power of a turbocharged engine is 1.3 times that of a naturally aspirated engine. Working principle: The 1.5T engine generates exhaust gases during operation, which drive the turbine, increasing the amount of air intake and making combustion in the cylinders more efficient. This reduces fuel consumption and enhances vehicle horsepower. The 1.5L naturally aspirated engine primarily relies on the downward movement of the piston for power, resulting in smoother power delivery and more direct response.