What are the units of dynamic viscosity?
Dynamic viscosity: The SI physical unit of dynamic viscosity (μ) is the Pascal-second (Pa s), which is identical to 1 kg m−1 s−1. The physical unit for dynamic viscosity in the centimeter gram second system of units (cgs) is the poise (P), named after Jean Poiseuille.
What is the MKS unit of viscosity?
The units of coefficient of viscosity in M.K.S is N.s/m^2 This is the SI unit of viscosity. It is equivalent to newton-second per square metre (N. s m–2). It is sometimes referred to as the poiseuille (symbol Pl). One poise is exactly 0.1 Pa.
What are the units of viscosity in CGS system?
A poise is the centimetre-gram-second (cgs) unit of viscosity.
What is the normal viscosity of HTHS oil?
If the HTHS value is above 3.5 mPas, the HTHS viscosity is to be classified as normal. An HTHS value below 3.5 mPas is referred to as a reduced HTHS viscosity. Engine oils with reduced HTHS viscosity were developed for special engines. You should therefore only fill it in if your vehicle has been approved for this by the OEM.
What are the different names of viscosity units?
Poise, Centipoise, Pound force-Second/square Inch, Poundal-Second/square Foot, Gram/Centimeter-Second, Slug/Foot-Second, Pound/Foot-Second and more Kilostoke, Stoke, Centistoke, square Meter/Second, square Centimeter/Second, square Millimeter/Second, square Foot/Second and more
What is the normal unit of measurement for HTHS?
The unit for measuring HTHS is mPas (millipascal second). If the HTHS value is above 3.5 mPas, the HTHS viscosity is to be classified as normal. An HTHS value below 3.5 mPas is referred to as a reduced HTHS viscosity.
How is HTHS viscosity measured-Lubrizol?
The measured number from the ASTM D4683 test gives the temporary viscosity loss of a lubricant under high shear at elevated temperatures representative of engine operating conditions. The lower the number, the lower the HTHS viscosity of the oil and the higher the anticipated fuel efficiency benefits.