Key Definitions in Engine Mechanics

Top Dead Center (TDC) and Bottom Dead Center (BDC)

When the piston moves in the cylinder, the highest position of the piston crown in the cylinder is called Top Dead Center (TDC); the lowest position of the piston crown in the cylinder is called Bottom Dead Center (BDC).

Piston Stroke

The minimum linear distance between the top and bottom dead centers is called the piston stroke, usually denoted byS. The minimum linear distance from the connection center of the crankshaft and the big end of the connecting rod to the rotation center of the diesel generator set crankshaft is called the crank radius.

Working Volume

The cylinder volume swept by the piston from top dead center to bottom dead center is called the cylinder working volume (or piston displacement).

Compression Ratio

After the gas is inhale into the cylinder, it fills the entire cylinder, that is, it occupies the total cylinder volume, which includes the combustion chamber volume and the cylinder working volume. The compression ratio indicates the multiple by which the volume of air (or mixture) in the cylinder is reduced after compression, and also indicates the degree to which the gas is compressed. The larger the compression ratio, the more the gas is compressed when the piston moves, the higher the temperature and pressure of the gas, and the higher the efficiency of the diesel engine.

Guangxi Dingbo Generator Set Manufacturing Co.,Ltd. has been established for many years. In addition to strict requirements on the quality of diesel generator set products and after-sales service, it also has strict regulations on the plant environment, production equipment and supporting facilities, which reflects the strict style of Dingbo people. It is not only responsible for generator products, customers, but also employees, so that every employee of Guangxi Dingbo Generator Set Manufacturing Co.,Ltd. generation equipment can work in a comfortable environment, Make it comfortable for every visiting customer to visit. Guangxi Dingbo Generator Set Manufacturing Co.,Ltd. Group, relying on high-quality generators, generator sets, diesel generator, diesel generator sets, good services and the care of friends from all walks of life, carries forward the enterprise spirit of "pragmatic innovation, pioneering, unity and hard work, dare to be the first", and adheres to the enterprise style of "treating people with sincerity and heart to heart", has won the strong support of customers in the fields of post and telecommunications, finance, petrochemical, metallurgy, transportation, education, medical care, etc, Having a proud performance. Dingbo people are gradually moving towards economies of scale and entering the international market after joining the WTO with flexible sales strategies and relying on the company's advantages and strength. If you would like to get more information welcome to contact us via [email protected].