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Oil sump
Coppa olio |
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In four-stroke, wet sump engines, this device acts as a lubricating oil collector tank, and is located in the lowest part of the engine. >>> |
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Overlap
Incrocio |
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It indicates the period of time between the dead centres (TDC and BDC), during which both the exhaust valve and the intake valve are (partly) open. >>> |
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OHC
OHC |
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English acronym for "Over Head Camshaft" i.e timing via camshaft located in the cylinder head. >>> |
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OHM
OHM |
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It is the unit of measure of electric resistance and owes its name to the scientist Georg Simon Ohm, who discovered some of the main laws of electromagnetism. >>> |
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OHV
OHV |
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English acronym for "Over Head Valves" which refers to valves located above the cylinder head. >>> |
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Oil
Olio |
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Synthetic or mixed mineral-based greasy fluid, not soluble in water.
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Open-deck
Open-deck |
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It is a special type of crankcase in which the cylinder block walls are built in the crankcase casting and the liners are only linked with it at the bottom, without any other contact with the walls. >>> |
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O-Ring
O-Ring |
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Special gasket with a circular (toroidal) shape and cross-section, used for instance in pipe couplings or to seal round lids all around their edges. >>> |
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