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US 2023/0010752 A1Published application
Work machine hybrid power unit
AssigneePerkins Engines Company Limited
InventorJohn Matthew RUTLEDGE
Life of this patent
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Abstract
A hybrid power unit of a work machine includes an engine and an energy storage device. The engine includes a crankshaft for driving a load and the crankshaft is attached to an energy storage device via a clutch. The energy storage device can be charged by the engine to store energy, that may be used to provide, when required, a boost to engine performance. The clutch may engage/disengage the energy storage device from the engine and/or control a clutch pressure. The clutch protects the crankshaft from shock loading and can slip to prevent over-torqueing of the crankshaft.
Claims15
A hybrid power unit comprising:
- an internal combustion engine;
- an energy storage device;
- a continuously variable transmission comprising a first pulley mechanically coupled to the engine and a second pulley mechanically coupled to the energy storage device, the continuously variable transmission having a first torque capability;
- and
- a torque fuse disposed between the first pulley and the engine, the torque fuse having a second torque capability;
- wherein
- the second torque capability is operable to be modified to be less than the first torque capability.
4 more elements
Dependencies are inferred from the claim text.