A joke when the left and right structures are not close.

Star engine is a piston engine, and the cylinders are arranged in a star shape around the crankshaft, and the number of cylinders is mostly odd. Before jet engines appeared, piston aircraft engines were mostly star-shaped designs, which were widely used by carrier-based aircraft because of their strong survivability in short battlefields, compact structure and small aircraft space.

2.v engine

V-type engine is an engine that divides all cylinders into two groups and arranges adjacent cylinders together at a certain angle, so that the two groups of cylinders form a plane with an included angle. From the side, the cylinders are V-shaped. V-type engine is small in height and length, which is convenient to be arranged on the car. Increasing the cylinder diameter is convenient to improve the displacement and power, and is suitable for higher cylinder numbers. At present, V-type six-cylinder engines are used in many medium and high-end vehicles in China, such as Regal, Passat and Audi A6.

3. Two-cylinder engine

Two-cylinder engine refers to an engine with two cylinders, which is composed of two identical single cylinders arranged on a machine body and shares the output power of a crankshaft. It is not only suitable for power generation devices, but also refers to complete machines including power devices, such as gasoline engines and aero-engines. The main part of the engine is the cylinder, which is the power source of the whole car. Dual-cylinder engines are mostly used in automobile engines, motorcycles, chain saws and other low-power power machinery.

4. Rotary engine

Rotating engines rely on the expansion pressure generated by the combustion of mixed gas to obtain the rotating force. The expansion pressure of the rotary engine acts on the side face of the rotor, thus pushing one of the three faces of the triangular rotor to the center of the eccentric shaft. This movement is carried out under the action of two components, one is the centripetal force pointing to the center of the output shaft, and the other is the tangential force that makes the output shaft rotate. The rotary engine cancels the useless linear motion, so the rotary engine with the same power has the advantages of smaller volume, lighter weight, lower vibration and noise.

5. Groove transmission mechanism

Groove transmission mechanism is a one-way intermittent motion mechanism composed of groove part and cylindrical pin, which is often used to convert the continuous rotation of driving part into the one-way periodic rotation of driven part with pause.

6. Cylindrical cam mechanism

Cylindrical cam mechanism is a component with a curved groove on the cylindrical surface or a curved profile on the cylindrical end surface, which can be regarded as the evolution of rolling a moving cam into a cylinder.

7. Curved bevel gear transmission

Spiral bevel gear transmission, also known as spiral bevel gear transmission, has the meshing characteristics of gradual contact of helical teeth and a large overlap, so the transmission is stable, the noise is low and the bearing capacity is strong; The number of teeth can reach at least 5, so a larger transmission ratio (up to 10) and a smaller mechanism size can be obtained. However, the machine tool for machining curved bevel gears is more complicated. Curved bevel gear transmission is usually used for vmgt. In the case of 5m/s, vm can be more than 40m/s.. This kind of transmission is widely used, especially in high-speed and heavy-load occasions such as the differential of automobiles and machine tools.

8. Gear train transmission

In mechanical equipment, in order to obtain a larger transmission ratio or speed change, multiple pairs of gears are often used for transmission, such as gear boxes and differentials used in machine tools and automobiles, and gear reducers widely used in engineering. This kind of transmission system composed of multiple pairs of gears is called gear train, or gear train for short.

This article comes from car home, the author of the car manufacturer, and does not represent car home's position.