Patent ID: 11958361
Assignee: OSHKOSH DEFENSE, LLC
Field: Transport (Mechanical engineering)
Classification: CPC B  F  Y | IPC B  F

Claim 0:
1. A military vehicle comprising:
a chassis;
a front axle coupled to the chassis;
a rear axle coupled to the chassis; and
a driveline including:
an engine;
an energy storage system;
an accessory drive coupled to the engine, the accessory drive including an air compressor, a fan assembly, a hydraulic pump, a first motor electrically coupled to the energy storage system, a sprag clutch including a first portion coupled to the hydraulic pump and a second portion, a first belt coupling the first portion of the sprag clutch to the air compressor, the first motor, and the fan assembly, and a second belt coupling the second portion of the sprag clutch to an output of the engine;
a second motor coupled to at least one of the front axle or the rear axle, and electrically coupled to the energy storage system; and
a clutch positioned between the engine and the second motor, wherein the clutch is spring-biased into engagement with the engine and pneumatically disengaged by an air supply selectively provided thereto based on operation of the air compressor;
wherein the driveline is operable in a plurality of modes including an engine mode and an electric mode;
wherein, in the engine mode, (i) the clutch does not receive the air supply such that the engine is coupled to the second motor and (ii) the engine drives (a) the accessory drive and (b) the at least one of the front axle or the rear axle through the second motor; and
wherein, in the electric mode, (i) the first motor receives power from the energy storage system to drive the air compressor to compress air to facilitate supplying the air supply to the clutch to disengage the clutch and decouple the engine from the second motor and (ii) the second motor receives power from the energy storage system to drive the at least one of the front axle or the rear axle.