Accessory drive for driving a balance shaft
AssigneePerkins Engines Company Limited
InventorHoward J. Lawrence
Life of this patent
Estimating the term…
Abstract
An engine accessory drive that has a primary drive driveable by a crankshaft of the engine is disclosed. The accessory drive includes a rotational member mounted on a drive shaft and driveable by the primary drive, the drive shaft having an axis of rotation offset from the axis of rotation of the crankshaft. The accessory drive further includes a secondary drive having a flexible continuous secondary drive member external of the engine and driveable by the rotational member, and at least one engine accessory driveable by the secondary drive. The at least one engine accessory includes at least a balance shaft.
Claims16
An engine accessory drive comprising:
- a primary drive driveable by a crankshaft of the engine,
- a rotational member mounted on a drive shaft driveable by the primary drive, the drive shaft having an axis of rotation offset from the axis of rotation of the crankshaft,
- a second drive including a flexible, continuous secondary drive member external of the engine and driveable by the rotational member, and
- at least one engine accessory driveable by the secondary drive, the at least one engine accessory including at least a balance shaft.
An engine comprising:
- a crankshaft,
- a primary drive driveable by the crankshaft,
- a rotational member mounted on a drive shaft driveable by the primary drive, the drive shaft having an axis of rotation offset from the axis of rotation of the crankshaft,
- a second drive including a flexible, continuous secondary drive member driveable by the rotational member, and
- at least one engine accessory driveable by the secondary drive, the at least one engine accessory including at least a balance shaft.
A method of driving an engine accessory comprising the steps of:
- providing an engine with a crankshaft,
- driving a primary drive from the crankshaft,
- driving a drive shaft from the primary drive, the drive shaft having a rotational member mounted thereon,
- driving a second drive including a flexible, continuous secondary drive member from the rotational member, and
- driving at least one engine accessory from the secondary drive, the at least one engine accessory including at least a balance shaft.
Dependencies are inferred from the claim text.