What does L-type engine mean?

[DelRafael]

"Inline" is also called parallel cylinders, which can be represented by L, followed by the number of cylinders to form the engine code. Modern cars mainly have L3, L4, L5, and L6 engines. Specifically, in this layout, all cylinders of the engine are arranged in the same angle and aligned in a single plane, using only one cylinder head. Additionally, the structure of the cylinder block and crankshaft is relatively simple, akin to cylinders standing in a single-file line. Below is an introduction to 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 feature front-engine front-wheel drive configurations, requiring the engine to be placed horizontally in the front. This necessitates that the engine not be too large, and the size of the L4 fits perfectly, making the inline 4-cylinder engine widely used.