engine here (pdf): http://physics.usc.edu/Undergraduate/temporary/corolla2009/2zrfeeng.pdf
One thing caught my attention:
Quote:
The lining surface of the connecting rod bearing has been micro-grooved to realize an optimal amount of oil clearance. As a result, cold-engine cranking performance has been improved and engine vibrations have been reduced.
Quote:
The lining surface of the crankshaft bearing has been micro-grooved to realize an optimal amount of oil clearance. As a result, cold-engine cranking performance has been improved and engine vibrations have been reduced.
Can someone explain what this is all about?
IIRC, microgrooving increases oil layer thickness independently from viscosity, right?
One thing caught my attention:
Quote:
The lining surface of the connecting rod bearing has been micro-grooved to realize an optimal amount of oil clearance. As a result, cold-engine cranking performance has been improved and engine vibrations have been reduced.
Quote:
The lining surface of the crankshaft bearing has been micro-grooved to realize an optimal amount of oil clearance. As a result, cold-engine cranking performance has been improved and engine vibrations have been reduced.
Can someone explain what this is all about?
IIRC, microgrooving increases oil layer thickness independently from viscosity, right?
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