What is the meaning of the cylinder arrangement type L-type

In-line engine.

Inline engine, all of its cylinders are lined up shoulder-to-shoulder into a plane, its cylinder block and crankshaft structure is simple, and the use of a cylinder head, lower manufacturing costs, high stability, good low-speed torque characteristics, low fuel consumption, compact size. Its disadvantage is lower power.

"Inline" can be represented by L, followed by the number of cylinders is the engine code, mainly L3, L4, L5, L6 engines.

Expanded

Mainstream engine cylinder arrangement: L-type inline, V-type arrangement, W-type arrangement, horizontally opposed engines, R-type rotor engine.

1, V

The so-called V engine, simply put, all cylinders are divided into two groups, the adjacent cylinders are arranged together at an angle (left and right of the two rows of cylinders center line angle γ & lt; 180 °), so that the two groups of cylinders to form an angle of the plane, from the side of the cylinders in the shape of a V (usually the angle of 60 °), it is called the V engine.

2, W-type

W-type engine, W-type engine is the German Volkswagen exclusive engine technology. Each side of the V-type engine cylinders and then a small angle of staggering, it became a W-type engine. Or W-type engine cylinder arrangement form is composed of two small V-shaped form a large V-shaped, two groups of V-type engine **** with a crankshaft. Strictly speaking, W-type engine should also be a variant of the V-type engine.

3, H-type (horizontally opposed)

Horizontally opposed engine cylinder angle of 180 degrees. But the manufacturing cost and process difficulty of horizontally opposed engine is quite high. The biggest advantage of horizontally opposed engine is low center of gravity.

4, rotor engine

Rotor engine, also known as the Miller cycle engine, was invented by the German Figgas Wankel, after which the technology was acquired by Mazda. Compared with the reciprocating engine, the rotor engine eliminates the useless linear motion, so the same power rotor engine size is smaller, lighter weight, and lower vibration and noise, which has a greater advantage.

5, VR engine

This engine is compact, width is close to the inline engine, the length is not much longer than the inline 4-cylinder engine.

The VR engine's cylinder angle is very small, the two rows of cylinders are close to parallel, and the hole of the spark plug on the cylinder head is almost and in a straight line.

Baidu Encyclopedia - Inline Engine

Baidu Encyclopedia - Cylinder Arrangement Type