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The composition of the crankshaft 1
The material is carbon steel or ductile iron, there are two important areas: the main journal, connecting rod neck (other). A main journal is mounted on the cylinder rod neck hole and connecting rod connected, via connecting rod small end the piston and the cylinder, is a typical slider-crank mechanism. Mainly refers to the crankshaft lubrication between the rocker arm bush lubrication and lubrication and two fixed points. Rotation of the crankshaft of the engine is the power source. It is the source for the entire mechanical system.
will cause wear of the crankshaft connecting rod journal and the contact surface of the oil due to discontinuity journal dirty and, if larger impurities of hard particles in the oil, there is also scratch the surface of the journal danger. If badly worn, it is likely to affect the length of stroke of the piston moves up and down, reducing combustion efficiency will naturally smaller power output.
In addition the crankshaft may also be due to insufficient lubrication oil or too thin, causing the journal surface burns, severe cases will affect the reciprocation of the pistons. So be sure to use the appropriate viscosity of the oil, and to ensure the cleanliness of oil.
