Lubrication requirement
Lubrication requirement
(OP)
Dear friends,
How to estimate the lube oil flow (quantity)requirement for the piston rings during the new engine design. Is their any reference please let me know.
Thanks
KMP
How to estimate the lube oil flow (quantity)requirement for the piston rings during the new engine design. Is their any reference please let me know.
Thanks
KMP





RE: Lubrication requirement
There are, however, calculation methods to estimate the oil required by hydrodynamic bearings (mains, rods, cam, other bushings). Piston spray jets could be included. The total pump flow is always more than the engine needs in order to build up pressure, so there is plenty of oil left over for splash lubrication of cylinders, lifters, etc.
RE: Lubrication requirement
RE: Lubrication requirement
RE: Lubrication requirement
Mr Jlwoodward, It will very helpful if you give an idea / reference, how to estimate the main bearing oil requirements.
KMP
RE: Lubrication requirement
This is a study of hydrodynamic journal bearings. It is filled with practical design information in graph form. You have to know or estimate the bearing load, the speed, the clearance, and the type of oil. Then you make an assumption on the allowable temperature rise and run through an iterative procedure until the assumed and calculated temperatues come out the same. The end result is the required oil flow, the amount of side leakage, and the friction power.