A military vehicle includes a chassis, a front axle, a rear axle, an energy storage system, a first driver, a transmission, and a second driver. The chassis includes a passenger capsule, a front module coupled to the passenger capsule, and a rear module coupled to the passenger capsule. The passenger capsule defines a tunnel extending longitudinally along a bottom thereof. The front axle is coupled to the front module. The rear axle is coupled to the rear module. The first driver is supported by the front module. The transmission is positioned within the tunnel and coupled to the front axle and/or the rear axle. The second driver is at least partially positioned within the tunnel and positioned between the first driver and the transmission. The second driver includes a motor/generator coupled to the transmission and a clutch positioned to selectively couple the first driver to the motor/generator.

A driveline for a military vehicle includes a driver. The driver includes a housing, a motor/generator, and a clutch. The housing includes an engine mount configured to couple to an engine and a backing plate configured to couple to a transmission. The motor/generator is disposed within the housing and configured to couple to an input of the transmission. The clutch is disposed within the housing and coupled to the motor/generator. The clutch is configured to selectively couple an output of the engine to the motor/generator. The clutch is spring-biased into engagement with the engine and pneumatically disengaged by an air supply selectively provided thereto.

A military vehicle including a chassis, an engine, a motor/generator, and an energy storage system. The chassis including a passenger capsule and a rear module coupled to the passenger capsule. The passenger capsule includes a rear subframe assembly, a left rear wheel well, a right rear wheel well, and a bed. The engine is coupled to the chassis for providing mechanical power to the military vehicle and the motor/generator is coupled to the engine. The energy storage system including a battery coupled to the rear module between the left rear wheel well and the right rear wheel well, the energy storage system electrically coupled to the chassis and electrically coupled to the motor/generator. The military vehicle is operable in a silent mobility mode with the engine inactive and the energy storage system providing power to the motor/generator to operate the military vehicle.

A driveline including a motor/generator configured to receive power from an engine and output power to at least one of a tractive element or an accessory, an energy storage system including a battery configured to be supported by a rear module of a vehicle, the energy storage system electrically coupled to the motor/generator to selectively receive electrical power from the motor/generator and provide electrical power to the motor/generator, wherein the driveline is operable in a silent mobility mode with the energy storage system providing power to the motor/generator to operate the vehicle.

A driveline for a military vehicle includes an engine, an energy storage system, an accessory drive coupled to the engine, a transmission configured to couple to at least one of a front axle or a rear axle of the military vehicle, a second motor coupled to the transmission and electrically coupled to the energy storage system, and a clutch positioned between the engine and the second motor. The accessory drive includes an air compressor and a first motor. The first motor is electrically coupled to the energy storage system. 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. The driveline is operable in a plurality of modes including an engine-only mode and an electric-only mode.

A front end accessory drive (FEAD) for a military vehicle. The FEAD includes a first belt, a second belt, multiple accessories, an electric motor-generator, at least one other accessory, and a sprag clutch. The accessories and the electric motor-generator are coupled with the first belt. The at least one other accessory, the first belt, and the second belt are coupled with the sprag clutch. The second belt is configured to couple with an output shaft of an engine of the military vehicle and be driven by the output shaft of the engine to drive the sprag clutch. The sprag clutch is thereby configured to drive the at least one other accessory and the first belt, and the first belt is thereby configured to drive the plurality of accessories, and the electric motor-generator.

An energy storage system for a military vehicle, the energy storage system including a lower support configured to be coupled to a bed of the military vehicle, a lower isolator mount coupled to the lower support, a battery coupled to the isolation mounts such that the weight of the battery is supported via the lower isolator mount and the lower support, the battery configured to be electrically coupled to a motor/generator, a bracket coupled to the battery, and an upper isolator mount coupled to the bracket and configured to couple to a rear wall of the military vehicle.

An ECU is configured to control an SOC control center of a battery and perform an engine torque suppression control. The engine torque suppression control is a control that suppresses output of an engine during a predetermined period of time after starting a system, and causes motor generators to output torque supplementing the suppressed output of the engine. When a deposition amount of PM on a filter exceeds a first specified amount, the ECU raises the SOC control center by controlling the motor generators before stopping the system as compared to when the deposition amount of PM is lower than a specified amount, and performs the engine torque suppression control at a next start after stopping the system.

A method performs shifts in a dog clutch element of a transmission system in a hybrid vehicle. The vehicle has an input shaft being connected to a crankshaft of an internal combustion engine, an output shaft being connected indirectly to driven wheels, an electric machine which is in engagement with the input shaft, and an automatic transmission connected between the input and output shafts. The transmission has a dog clutch element for the releasable coupling of two transmission elements. During a desired shifting of the dog clutch element, the torque of the input shaft is adapted via the electric machine, and therefore a reduced load prevails in the region of the dog clutch element and the latter can be disengaged, after which the internal combustion engine is set to a desired target rotational speed, and after which the dog clutch element is engaged when the target rotational speed is reached.

Methods and systems are provided for operating a driveline of a hybrid vehicle powertrain, where the driveline includes an electric machine downstream of a dual clutch transmission, which is downstream of an engine. In one example, a method comprises communicating from a transmission, a torque to accelerate transmission components from a first speed to a second speed with first and second clutches of a dual transmission open, the communicating performed while an electric machine coupled to the dual clutch transmission at a location downstream of the dual clutch transmission is providing torque to propel a vehicle. In this way, wheel speed may remain substantially constant while the transmission is shifted and the engine is stopped.