| 摘要 |
<p>An engine 101 has a crankshaft 104, an oil pump 102 and an accessory drive 110, the oil pump 102 having an input member, eg drive shaft 118, which is driven from the crankshaft 104 at location on the opposite side of the accessory drive 110 to the engine casing 103. The oil pump input member 118 may be driven by a drive band 120, eg a dry toothed belt, multi-rib belt or chain, from a drive pulley 109 formed with or attached to the outer face of the crankshaft pulley 112. The drive pulley 109 being smaller than the crankshaft pulley 112 can be accommodated beneath a chamfered portion 114 of the side rail 108. The drive shaft 118 may pass through the engine casing 103 to drive the oil pump 102 within the sump and below the crankshaft; alternatively, the oil pump may be mounted outside the engine casing. A decoupler 105 may be provided between the crankshaft 104 and the crankshaft pulley 112.</p> |
