Motorcycle is a two or three wheeled vehicle driven by gasoline engine and steered by the handle. It is light, flexible and fast. It is widely used in patrol, passenger and freight transportation, as well as sports equipment. From the general direction, motorcycles are divided into street cars, road racing motorcycles, cross-country motorcycles, cruisers, station wagons, etc.

 

Modern motorcycle industry has introduced a large number of advanced technologies. In 1998, the flc-1 motorcycle was introduced as the world's top engine for the 21st century, and it not only adopted the fuel injection technology, but also became the world's leading engine for the 21st century. The application of high and new technologies such as optical communication electronic control system, radar ranging automatic control system, electronic map guidance system and acoustic electronic silencing system in some concept motorcycles makes modern motorcycles more perfect and shocking.

 

At present, in the domestic market, Chinese motorcycle enterprises are impacted by "motorcycle restriction" and "motorcycle prohibition" in large and medium-sized cities in China, and the change of enterprise layout is inevitable. The domestic market demand power of China's motorcycle industry is obviously insufficient, the export development is generally stable, the economic benefits of the whole industry are not optimistic, and the growth of the external market is obviously better than that of the internal market. Under the exclusion of the urban market, the domestic sales of motorcycle products in China are weak, and motorcycle enterprises can only focus on the rural market and overseas market. China's motorcycle enterprises should pay attention to the protection of industry reputation, establish brand awareness and strengthen brand protection while competing for export.

 

Characteristics of motorcycle engine

 

1. The engine is a two-stroke or four stroke gasoline engine.

 

2. Air cooling is adopted, including natural air cooling and forced air cooling. General models adopt the natural air-cooled cooling mode that relies on the air blowing through the cylinder head and the heat sink on the cylinder liner to take away the heat during driving. In order to ensure the cooling of high-power motorcycle engine before driving at a low speed and before starting, the forced air cooling cooling mode of installing fan and air guide cover and using forced air to cool the heat sink is adopted.

 

3. The engine speed is high, generally more than 5000 rpm. Liter power (effective power per liter of engine displacement) is large, generally about 60 kW / L. This shows that the strengthening degree of motorcycle engine is high and the overall size of engine is small.

 

4. The engine crankcase, clutch and gearbox are designed as a whole with compact structure.

 

The layout of engine has a great influence on the sports performance of motorcycle. For example, multi cylinder engine has many advantages, but its disadvantages are compact size and heavy weight. The length and size of the engine is too large, which will greatly affect the feel of the steering handle of the motorcycle. When the single cylinder engine and transverse V2 engine are adopted, the weight of the engine can be greatly reduced, its length and size can be reduced, and the steering force of the steering handle of the motorcycle can be reduced. This can not only improve the speed of the motorcycle, but also make the motorcycle turn briskly, so as to improve the driving comfort of the motorcycle and add the amusement of the motorcycle. In short, all motorcycles with sports performance are super sports motorcycles, regardless of whether they are equipped with multi cylinder engine or single cylinder engine, and whether the body is an integral fairing or partial fairing.