Motorcycle pinyin

The pinyin of motorcycle is mó tu, not chē.

Motorcycle is a kind of two-wheeled or three-wheeled vehicle driven by gasoline engine and controlled by handlebar, which is light, flexible and fast. Widely used in patrol, passenger and freight transportation, etc. It is also used as sports equipment. Generally speaking, motorcycles are divided into street cars, road racing cars, cross-country motorcycles, cruise cars, station wagons and so on.

1885, German gottlieb daimler installed an engine on a machine, and the world's first motorcycle was born. Motorcycle-related motorcycle sport is a military sport and a competitive sport with motorcycles as equipment. It is divided into two-wheel and three-wheel models, and each model is divided into several grades according to the working volume of the engine cylinder. According to the competition form, it can be divided into cross-country race, multi-day race, road race, track race, travel race and so on. And the ranking is evaluated by driving speed or driving skills.

Basic composition of motorcycle

Engine block: The engine block consists of three parts: cylinder head, cylinder block and crankcase. The cylinder head is made of aluminum alloy with fins. The new four-stroke motorcycle engines all adopt overhead valve, chain drive and overhead camshaft structure. The cylinder block adopts bimetal (aluminum fins cast outside the wear-resistant cast iron cylinder liner) to obtain better heat dissipation effect.

Crank connecting rod: The crankshaft of motorcycle engine is combined, which consists of left half crankshaft, right half crankshaft and crank pin. Ball bearings are installed on the main journals of the left and right half shafts to support the crankshaft on the crankcase. Flywheel, magneto and clutch driving gear are installed at both ends of crankshaft respectively.

Carburetor: Carburetor is an important part of motorcycle fuel supply system, which is located between air filter and engine air intake. Motorcycle engines generally adopt carburetor, plunger throttle valve and float chamber throttle valve with horizontal intake flow direction.

Refer to the above content: Baidu Encyclopedia-Motorcycle