Development of crankshaft

Dec. 23, 2019

The crankshaft is the main rotating part of the engine. After the connecting rod is installed, it can take up and down (reciprocating) motion of the connecting rod into cyclic (rotating) motion. It is an important part of the engine. Its material is made of carbon structural steel or ductile iron. It has two important parts: the main journal, the connecting rod journal, and (among others). The main journal is mounted on the cylinder block, the connecting rod neck is connected with the large head hole of the connecting rod, and the small connecting rod head is connected with the cylinder piston, which is a typical crank slider mechanism. The crankshafts for trucks lubrication mainly refers to the lubrication of the connecting rod big bearing bush and the crankshaft connecting rod neck and the lubrication of the two fixed points. The rotation of the crankshaft is the power source of the engine. It is also the source of power for the entire mechanical system.


Strong domestic car demand, the shift of the global auto market center to developing countries, and the increasing globalization of auto parts procurement have promoted China's overall auto market to become a pillar industry in China's industrial development. From 2007 to 2010, China's total crankshaft output was 4.77 million, 6.24 million, 26.33 million, and 31 million units, of which, except for motorcycles and other single-cylinder engine crankshafts, still reached 4.5 million, 5.75 million, 10.32 million and 14 million units.

China's fast-growing automotive industry provides a vast market space for OEM alloy steel crankshafts factory. In 2010, China's auto production and sales were 18.2647 million and 18.0619 million, respectively, a year-on-year increase of 32.44% and 32.37%. Among them: the production and sales of passenger vehicles were 13.8971 million and 13.7758 million, an increase of 33.83% and 33.17% year-on-year; the production and sales of commercial vehicles were 4.367 million and 4.3041 million, an increase of 28.19% and 29.90%.

For the whole year of 2010, the cumulative production and sales of engines were 16.8095 million and 17.025 million units, an increase of 27.44% and 29.73% respectively over the previous year. Among them, the cumulative production and sales of diesel engines totaled 3.935 million and 39.927 million units, an increase of 25.03% and 30.36% over the previous year, and the cumulative completion of gasoline engines reached 12.956 million and 13.0252 million units, an increase of 28.19% and 29.55% over the previous year. It is estimated that China's engine market sales will reach approximately 19.34 million units in 2011, a year-on-year increase of approximately 13.63%. As the core component of the engine, sales of crankshafts are closely related to engine production and sales. Changes in engine production and sales reflect changes in demand for the crankshaft market.

Steel Crankshafts

Steel Crankshafts

Magnetic energy source

Although the low-shaft resistance generator can only convert about 50 of negative torque magnetic energy into positive torque magnetic energy in principle design, the positive torque generated is enough to offset the negative torque (because it is actually impossible All negative torque magnetic energy is converted into positive torque magnetic energy).After further research and analysis on the structure and working principle of conventional generators, we finally found a breakthrough, which is to use the "energy buffer transfer method" to achieve the above purpose based on the conventional power generation principle structure; that is, to induce part of the fixed direction induction After the current is temporarily stored, and then released in a lag time, the released energy can not only continue to be output to the load, but the additional magnetic energy generated in the armature freewheeling winding can also do positive work to the rotor (producing a positive rotation) Moment). This is the source of positive torque magnetic energy for low shaft resistance generators.