Abstract: A drum drive system includes a controller configured to control a prime mover, a variable displacement pump, and a variable displacement motor of the vehicle to provide a target drum speed for a drum of the vehicle. To provide the target drum speed, the controller having programmed instructions to (i) initially operate the variable displacement motor at a maximum motor displacement and operate the variable displacement pump at a pump displacement that provides the target drum speed without needing to actively manipulate a prime mover speed of the prime mover, (ii) increase the pump displacement and decrease a motor displacement without needing to actively manipulate the prime mover speed while still providing the target drum speed, and (iii) increase the prime mover speed if necessary to maintain the target drum speed in response to the pump displacement reaching a maximum pump displacement and the motor displacement reaching a minimum motor displacement.

Abstract: A drum drive system includes a controller configured to selectively control an engine, a variable displacement pump, and a variable displacement motor of a vehicle to provide a target drum speed for a drum of the vehicle. To provide the target drum speed, the controller is configured to: (i) initially operate the variable displacement motor at a maximum motor displacement and operate the variable displacement pump at a pump displacement that provides the target drum speed without needing to actively manipulate an engine speed of the engine; (ii) increase the pump displacement and decrease a motor displacement without needing to actively manipulate the engine speed while still providing the target drum speed; and (iii) increase the engine speed in response to the pump displacement reaching a maximum pump displacement and the motor displacement reaching a minimum motor displacement if necessary to maintain the target drum speed.

Abstract: A refuse vehicle includes a cab and a body assembly disposed behind the cab. The body assembly includes an ejector and a body at least partially defining a hopper volume and a storage volume. The ejector includes a wall at least partially defining an opening and a coupling pivotally and fixedly coupling a panel to the wall. The wall is movable within the storage volume between a frontmost position and a rearmost position. The panel extends at least partially across the opening when in a closed position. The panel is angularly offset relative to the closed position when in the open position. The ejector is configured to fully eject refuse from the storage volume when the wall is in the rearmost position. The hopper volume extends between the wall and the cab when the wall is in the frontmost position.

Abstract: A concrete mixer vehicle includes a mixer drum assembly, an energy storage device, an internal combustion engine, an auxiliary power unit, and an energy management controller. The internal combustion engine is configured to supply power to the mixer drum assembly. The auxiliary power unit is configured to supply power from the energy storage device to the mixer drum assembly. The energy management controller is configured to engage the APU and disengage the ICE based on a state of charge of the energy storage device.

Abstract: A refuse vehicle includes a chassis and a body assembly. The body assembly includes a series of panels configured to contain a volume of refuse therein and an ejector. The panels define a hopper volume and a storage volume. The ejector is configured to fully eject refuse from the storage volume. The ejector includes a wall at least partially defining an opening and a coupling pivotally and fixedly coupling a panel to the wall. The wall is movable within the storage volume. The panel is repositionable relative to the wall between a closed position and an open position. The panel extends at least partially across the opening when in the closed position and is angularly offset relative to the closed position when in the open position.

Abstract: An electrified vehicle include a chassis, a front axle coupled to the chassis, a rear axle coupled to the chassis, an electric motor supported by the chassis, and a trailer coupled to a rear end of the chassis and configured to be towed by the electrified vehicle. The electric motor is configured to drive at least one of the front axle, the rear axle, or a component of the electrified vehicle. The trailer includes a trailer frame, a trailer axle coupled to the trailer frame, and an energy storage device supported by the trailer frame. The energy storage device includes a plurality of batteries. The energy storage device configured to power the electric motor.

Abstract: A concrete mixer truck includes a chassis, a plurality of tractive assemblies coupled to the chassis, a mixing drum rotatably coupled to the chassis, the mixing drum defining an internal volume configured to contain material and an aperture through which the material can enter and exit the internal volume, an energy storage device positioned at a rear end of the chassis and configured to provide electrical energy, and an electromagnetic device electrically coupled to the energy storage device, where the electromagnetic device is configured to receive the electrical energy from the energy storage device and provide mechanical energy to drive at least one of the plurality of tractive assemblies to propel the concrete mixer truck.

Abstract: A concrete mixer vehicle includes a chassis, a tractive assembly coupled to the chassis and configured to propel the concrete mixer vehicle, a mixing drum rotatably coupled to the chassis, and an electromagnetic device configured to convert electrical energy to mechanical energy to drive the tractive assembly. In a first configuration, a first battery module is removably coupled to the chassis and configured to provide the electrical energy to the electromagnetic device, and in a second configuration, the first battery module is removed from the chassis and replaced with a second battery module, the second battery module removably coupled to the chassis and configured to provide the electrical energy to the electromagnetic device.

Abstract: A concrete mixer vehicle includes a chassis, a cab coupled to the chassis, a drum assembly coupled to the chassis, and a module coupled to the chassis and positioned rearward of the drum assembly. The module includes a prime mover, a cooling system, and a hood. The hood has a first end positioned proximate the drum assembly, an opposing second end positioned proximate a rear end of the chassis, and a top surface. The hood defines an internal cavity within which the prime mover and the cooling system are disposed. The first end defines an inlet airflow cavity. The inlet airflow cavity has a bottom surface and an air inlet positioned between the top surface and the bottom surface. The air inlet connects the inlet airflow cavity to the internal cavity.

Abstract: A hydraulic system for a concrete mixer vehicle including an electronically controlled variable displacement hydraulic pump, a distribution manifold fluidly coupled to the hydraulic pump, a hydraulic fan motor coupled to a fan and fluidly coupled to the distribution manifold, an auxiliary system fluidly coupled to the distribution manifold, and a controller structured to: determine a total system demand based at least in part on a fan motor demand and an auxiliary system demand, adjust a displacement of the hydraulic pump to satisfy the total system demand, and operate the hydraulic pump at a pump speed to satisfy the total system demand.

Abstract: A drum drive system includes a controller configured to selectively control an engine, a variable displacement pump, and a variable displacement motor of a vehicle to provide a target drum speed for a drum of the vehicle. To provide the target drum speed, the controller is configured to: (i) initially operate the variable displacement motor at a maximum motor displacement and operate the variable displacement pump at a pump displacement that provides the target drum speed without needing to actively manipulate an engine speed of the engine; (ii) increase the pump displacement and decrease a motor displacement without needing to actively manipulate the engine speed while still providing the target drum speed; and (iii) increase the engine speed in response to the pump displacement reaching a maximum pump displacement and the motor displacement reaching a minimum motor displacement if necessary to maintain the target drum speed.

Abstract: A vehicle includes an engine, a drum, a drum drive system, and a control system coupled to the engine and the drum drive system. The drum drive system includes a pump and a motor. The pump is mechanically coupled to the engine and configured to pump a fluid through a hydraulic system. The pump has a variable pump displacement. The motor is fluidly coupled to the pump by the hydraulic system and positioned to drive the drum to agitate the drum contents. The motor has a variable motor displacement. The control system is configured to receive pressure data indicative of a pressure of the fluid within the hydraulic system, reduce the variable motor displacement in response to the pressure of the fluid being less than a threshold system pressure, and reduce a speed of the engine based on the reduction of the variable motor displacement.

Abstract: A vehicle includes an engine, an electric energy system, a drum configured to mix drum contents received therein, and a drum drive system coupled to the drum and the engine. The drum drive system includes a primary pump, an electric motor powered by the electric energy system, an auxiliary pump fluidly coupled to the mechanical pump and powered by the electric motor, and a drum motor fluidly coupled to the primary pump and the auxiliary pump and positioned to drive the drum to agitate the drum contents.

Abstract: A refuse vehicle includes a chassis and a body assembly. The body assembly includes a series of panels configured to contain a volume of refuse therein and an ejector. The panels define a hopper volume and a storage volume. The ejector is configured to fully eject refuse from the storage volume. The ejector includes a wall at least partially defining an opening and a coupling pivotally and fixedly coupling a panel to the wall. The wall is movable within the storage volume. The panel is repositionable relative to the wall between a closed position and an open position. The panel extends at least partially across the opening when in the closed position and is angularly offset relative to the closed position when in the open position.

Abstract: A vehicle includes a chassis, tractive elements coupled to the chassis, an electric motor coupled to the chassis and coupled to the tractive elements such that the electric motor drives the tractive elements to propel the vehicle, an accessory module coupled to the chassis and coupled to an output of the electric motor. The accessory module is configured to receive mechanical energy provided by the electric motor and provide at least one of electrical energy or fluid energy.

Abstract: A refuse vehicle includes a chassis and a body assembly. The body assembly includes a series of panels configured to contain a volume of refuse therein, a ramp, and an ejector. The panels define a hopper volume and a storage volume. The ramp is disposed within the hopper volume. The ejector is configured to fully eject refuse from the storage volume. The ejector includes a wall at least partially defining an opening within a plane and a coupling pivotally and fixedly coupling a panel to the wall. The wall is movable within the storage volume. The panel is selectively rotatable relative to the wall between a closed position and an open position. The panel extends at least partially across the opening when selectively rotated into the closed position and is angularly offset relative to the plane of the opening when selectively rotated into the open position.

Abstract: A concrete mixer vehicle includes a chassis, a tractive assembly coupled to the chassis and configured to propel the concrete mixer vehicle, a mixing drum rotatably coupled to the chassis, and an electromagnetic device configured to convert electrical energy to mechanical energy to drive the tractive assembly. In a first configuration, a first battery module is removably coupled to the chassis and configured to provide the electrical energy to the electromagnetic device, and in a second configuration, the first battery module is removed from the chassis and replaced with a second battery module, the second battery module removably coupled to the chassis and configured to provide the electrical energy to the electromagnetic device.

Abstract: A concrete mixer truck includes a chassis, a plurality of tractive assemblies coupled to the chassis, a mixing drum rotatably coupled to the chassis, the mixing drum defining an internal volume configured to contain material and an aperture through which the material can enter and exit the internal volume, an energy storage device positioned at a rear end of the chassis and configured to provide electrical energy, and an electromagnetic device electrically coupled to the energy storage device, where the electromagnetic device is configured to receive the electrical energy from the energy storage device and provide mechanical energy to drive at least one of the plurality of tractive assemblies to propel the concrete mixer truck.

Abstract: A hydraulic system for a concrete mixer vehicle including an electronically controlled variable displacement hydraulic pump, a distribution manifold fluidly coupled to the hydraulic pump, a hydraulic fan motor coupled to a fan and fluidly coupled to the distribution manifold, an auxiliary system fluidly coupled to the distribution manifold, and a controller structured to: determine a total system demand based at least in part on a fan motor demand and an auxiliary system demand, adjust a displacement of the hydraulic pump to satisfy the total system demand, and operate the hydraulic pump at a pump speed to satisfy the total system demand.

Abstract: A vehicle includes a chassis, tractive elements configured to support the chassis, a primary driver configured to output mechanical energy to at least one of the tractive elements to drive the vehicle, a coolant circuit, a fan assembly, and a controller. The coolant circuit includes a thermal energy interface configured to transfer thermal energy from the primary driver to coolant and a radiator configured to receive the coolant. The fan assembly includes a hydraulic pump coupled to the primary driver, a hydraulic motor fluidly coupled to the hydraulic pump, a fan coupled to the hydraulic motor and configured to provide air flow to the radiator, and an actuator configured to vary a displacement of at least one of the hydraulic pump and the hydraulic motor. The controller is configured to control the actuator to vary a speed of the fan based on telematics data.