Common valve torque calculation method

How to calculate the valve torque. 1 "-600LB Calculation of stem torque (1) Total stem torque MF = MQF + MFT (2) Friction torque between ball and valve seat MQF MQC = MQF1 + MQF2 MQF1 Frictional moment of seat pre-tightening force MQF1 = 0.3925 (D2JH? D2MN) * (1 + COS?) * QM * fM * R Friction torque generated by working pressure of MQF2 medium MQF2 = π * P * fM * R (D2JH- 0.5 D2MN- 0.5 D2MW) Calculated results: MQF1 = 9043 Nmm MQF2 = 63192Nmm MQF = 72235 Nmm (3) Friction torque between packing and valve stem MFT MFT = 0.5 * FT * dF FT = ψ * dF * bT * P Calculation result: MFL = 5840 Nmm Calculation result : MF = 78075 Nmm

The structure of the traditional wipers, there are inevitably multiple pressure points, already cannot adapt to modern car windshield this mainstream surface design, usually, use three months after they leave the car appeared different degree: scrape wash not ideal, water mark excessive noise, friction, thus seriously affect reason such as driving snow days safe! Without bone wipers system with unique intelligent adaptive spring steel shell fragments, dispersed homogeneously pressure, make each part blade force balance, avoid the disadvantages of the traditional windshield wipers.
No Bone Brush Wiper Blade pursuit and aerodynamically perfect union, eliminate high-speed car when the wind, the movement caused to glass jitter blade wear to a minimum.
Boneless wipers is simple in design, structure, weight very light light and small, more make the yushua electrical prolonging the car 2 or more times;
 No Bone Brush Wiper Blade without replacement wipers arm, the only change car traditional skeleton wiper blades can, more economical, more convenient.

No Bone Brush Wiper Blade

No Bone Brush Wiper Blade,Silicone Wiper Blades,Flat Wiper Blades,Universal Wiper Blades

COMOTECH ASIA PACIFIC (HANGZHOU)CO.,LTD , http://www.capwiper.com