What does engine L mean?

[JaxonFitz]

Engine L refers to "inline" cylinders. "Inline" is also known as parallel cylinders and can be represented by the letter L, followed by the number of cylinders to form the engine code. Modern vehicles mainly feature L3, L4, L5, and L6 engines. Specifically, in this layout, all cylinders of the engine are arranged side by side in the same plane at the same angle, using only one cylinder head. Additionally, the structure of the cylinder block and crankshaft is relatively simple, akin to cylinders standing in a straight line. Below is relevant information about L-type engines: 1. Advantages of L-type engines: stable, low cost, simple structure, good operational balance, compact size with high stability, excellent low-speed torque characteristics, low fuel consumption, compact dimensions, and wide application. 2. Most modern cars adopt a front-engine, front-wheel-drive layout, requiring the engine to be placed horizontally at the front of the vehicle. This necessitates the engine to be not too large in size, and the L4 engine's dimensions fit perfectly, making the inline 4-cylinder engine widely used.