| 摘要 |
<p>Disclosed is an engine crankcase 106 and oil shield components 144 therefore. During operation of an engine 100 oil ligaments can detach from a rotating crankshaft 112 and eventually break up in to oil droplets. The oil droplets become entrained in the crankcase gases and are eventually expelled to atmosphere, thus influencing the engine's emissions level. The present disclosure provides an internal combustion engine having a crankcase 106 comprising a shield portion 144 arranged to be struck by oil ligaments which might detach from a crankshaft portion as the crankshaft rotates during use. The shield portion may be in the form of concave ribs which are axially aligned with the counterweights 122 of the crankshaft. The shield may be used to guide the oil to the oil sump 142.</p> |
