What is the difference between an L3 engine and an L4 engine?

[DelTucker]

The difference between an L3 engine and an L4 engine lies in the number of cylinders: the L3 is a three-cylinder engine, which has a simple structure, small size, and light weight; the L4 is a four-cylinder engine with a relatively more complex structure. The 'L' stands for inline, and the number following it indicates the engine code. Currently, the main types of engines used in automobiles are L3, L4, L5, and L6. An inline engine is one where all cylinders are arranged side by side in a single plane. It features a simple cylinder block and crankshaft structure, uses a single cylinder head, and offers high stability, good low-speed torque characteristics, low fuel consumption, compact internal dimensions, and wide applicability. An engine is a machine that converts other forms of energy into mechanical energy, including internal combustion engines, external combustion engines, jet engines, electric motors, etc. The term 'engine' can refer to either the power generation device or the entire machine including the power unit.