Electrified military vehicle

A military vehicle comprising:

• a chassis;
• a front axle coupled to the chassis;
• a rear axle coupled to the chassis;
• and
• a driveline including:
• a first driver including an engine;
• an energy storage system;
• an accessory drive coupled to the engine, the accessory drive including a plurality of accessories and a first motor, the first motor electrically coupled to the energy storage system;
• a transmission coupled to at least one of the front axle or the rear axle;
• and
• a second driver coupled to the engine and the transmission, the second driver including a second motor electrically coupled to the energy storage system;
• wherein the driveline in operable in an electric-only mode where (i) the engine is off, (ii) the first motor receives power from the energy storage system to drive the plurality of accessories of the accessory drive, and (iii) the second motor receives power from the energy storage system to drive the transmission and, thereby, the at least one of the front axle or the rear axle.

A military vehicle comprising:

• a chassis;
• a front axle coupled to the chassis;
• a rear axle coupled to the chassis;
• and
• a driveline including:
• a first driver including an engine;
• an energy storage system;
• an accessory drive coupled to the engine, the accessory drive including a plurality of accessories and a first motor, the first motor electrically coupled to the energy storage system;
• a transmission coupled to at least one of the front axle or the rear axle;
• and
• a second driver coupled to the engine and the transmission, the second driver including:
• a second motor electrically coupled to the energy storage system;
• a housing including an engine mount coupled to the engine and a backing plate coupled to the transmission, the second motor disposed within the housing and coupled to an input of the transmission;
• and
• a clutch disposed within the housing and coupled to the second motor, the clutch configured to selectively couple an output of the engine to the second motor, the clutch is spring-biased into engagement with the engine and pneumatically disengaged by an air supply selectively provided thereto;
• when the clutch is disengaged, the second motor is configured to receive power from the energy storage system and provide a mechanical output to the input of the transmission to drive the military vehicle;
• and
• when the clutch is engaged, the second motor is configured to (i) selectively provide a mechanical output to the transmission to drive the military vehicle based on a mechanical input received from the engine and (ii) selectively generate electricity based on the mechanical input.

A military vehicle comprising:

• a chassis;
• a front axle coupled to the chassis;
• a rear axle coupled to the chassis;
• and
• a driveline including:
• a first driver including an engine;
• an energy storage system;
• an accessory drive coupled to the engine, the accessory drive including a plurality of accessories and a first motor, the first motor electrically coupled to the energy storage system, wherein the plurality of accessories include a first accessory and a second accessory, and wherein the accessory drive includes:
• a sprag clutch including a first portion, a second portion, and a plurality of sprags positioned between the first portion and the second portion, wherein the plurality of sprags are configured to (i) limit relative rotation between the first portion and the second portion in a first direction of relative rotation and (ii) allow relative rotation between the first portion and the second portion in a second direction of relative rotation opposite the first direction of relative rotation, and wherein the second accessory is coupled to the first portion of the sprag clutch;
• a first belt coupled to the first portion of the sprag clutch, the first motor, and the first accessory;
• and
• a second belt coupled to the second portion of the sprag clutch and an output of the engine;
• a transmission coupled to at least one of the front axle or the rear axle;
• and
• a second driver coupled to the engine and the transmission, the second driver including a second motor electrically coupled to the energy storage system.

A military vehicle comprising:

• a chassis including a passenger capsule defining a rear wall, a front module coupled to a front end of the passenger capsule, and a rear module coupled to a rear end of the passenger capsule;
• an engine supported by the front module;
• an energy storage system supported by at least one of the rear wall of the passenger capsule or the rear module;
• an accessory drive coupled to the engine, the accessory drive including:
• a first motor electrically coupled to the energy storage system;
• a plurality of accessories including at least a first accessory and a second accessory;
• a sprag clutch including a first portion, a second portion, and a plurality of sprags positioned between the first portion and the second portion, wherein the plurality of sprags are configured to (i) limit relative rotation between the first portion and the second portion in a first direction of relative rotation and (ii) allow relative rotation between the first portion and the second portion in a second direction of relative rotation opposite the first direction of relative rotation, and wherein the second accessory is coupled to the first portion of the sprag clutch;
• a first belt coupled to the first portion of the sprag clutch, the first motor, and the first accessory;
• and
• a second belt coupled to the second portion of the sprag clutch and a first output of the engine;
• a transmission;
• a second motor electrically coupled to the energy storage system and mechanically coupled to the transmission;
• and
• a clutch positioned to selectively couple a second output of the engine to the second motor.

A military vehicle comprising:

• a first driver including an engine;
• an energy storage system;
• an accessory drive coupled to the engine, the accessory drive including:
• a first motor electrically coupled to the energy storage system;
• a plurality of accessories including at least a first accessory and a second accessory, the first accessory including an air compressor;
• a sprag clutch including a first portion, a second portion, and a plurality of sprags positioned between the first portion and the second portion, wherein the plurality of sprags are configured to (i) limit relative rotation between the first portion and the second portion in a first direction of relative rotation and (ii) allow relative rotation between the first portion and the second portion in a second direction of relative rotation opposite the first direction of relative rotation, and wherein the second accessory is coupled to the first portion of the sprag clutch;
• a first belt coupled to the first portion of the sprag clutch, the first motor, and the air compressor;
• and
• a second belt coupled to the second portion of the sprag clutch and a first output of the engine;
• a transmission;
• and
• a second driver coupled to the engine and the transmission, the second driver including:
• a second motor electrically coupled to the energy storage system;
• a housing including an engine mount coupled to the engine and a backing plate coupled to the transmission, the second motor disposed within the housing and coupled to an input of the transmission;
• and
• a clutch disposed within the housing and coupled to the second motor, the clutch configured to selectively couple a second output of the engine to the second motor, the clutch is spring-biased into engagement with the engine and pneumatically disengaged by an air supply selectively provided thereto;
• wherein, in a first mode, (i) the engine is off, (ii) the first motor is configured to receive power from the energy storage system to drive the air compressor to facilitate supplying the air supply to the clutch to disengage the clutch and decouple the engine from the second motor, and (iii) the second motor is configured to receive power from the energy storage system and provide a mechanical output to the input of the transmission to drive the military vehicle;
• and
• wherein, in a second mode, (i) the air supply is not provided to the clutch such that the clutch is engaged, (ii) the engine provides a first mechanical output to the second belt of the accessory drive via the first output thereof, and (iii) the engine provides a second mechanical output to the clutch via the second output thereof.