The suitable value of friction between the crank shaft and connecting rod and why this friction value

The fuel emission and the efficiency is controlled in the V-Twin engine and there are two innovations adopted by the engines including resin coating over the piston skirt that minimizes the friction between the piston and the cylinder. The second is the L-Shaped ring piston that increases the performance of sealing and carried out by the gas reduction [1].

The crankshaft mainly consists of connecting rods, piston, and piston pin. The friction coefficient are measured for the linear relation between the duty parameter and the hydrodynamic lubrication by the formula. while C varies from 1.9 to 2.25 and m varies from 0425 to 0.525.  The friction values varies from 0.03 to 0.15 and the optimal values of the friction is 0.06 [2].

The suitable value for friction between the piston pin and the piston and why this friction value.

The piston pin and the piston are components of crank shafts. The friction coefficient is constant value for the piston pin as well as piston boss is constant that is 0.4. The constant values for the piston pin and the connecting rod is 0.6. In case of the Motorcycle 250 V-Twin Engine the optimized conditions are considered for the hard and intricate environment [3].

The factors for the analysis are based on the material properties used for the formation of the piston pin and the piston. The coefficient of friction differs in case of lubrication conditions and friction. The coating of diamond like carbon reduces the low friction, high resistance, and high wear resistance [2].  

What is the suitable angle for the vibration between two pistons? For example, 50 degree is the suitable vibration and because it helps the parts work faster.

The engine type of Motorcycle 250 V-Twin Engine is 4-stroke, liquid cooled, DOHC and the 900 V-twin. The geometric advantages are different for the lowest displacement at the 6190N and the lower mass was determined. The iteration was used for the OEM piston pin [2].

The angle for the vibration was between two pistons and the angle was 45 degree. The protection for the piston pin was used for the installment and removing of the pins. The stress distribution and the displacement distribution can be used for the final design of the piston pin [3].