Abstract: A fire apparatus includes a chassis, a cab coupled to the chassis, a pump system coupled to the chassis and positioned at least partially behind the cab, and a driveline. The pump system includes a pump. The driveline includes a prime mover positioned beneath the cab and coupled to the chassis, a transmission, and a sandwiched power take-off unit positioned between (a) the prime mover and (b) the transmission and the pump system. The sandwiched power take-off unit facilitates operating the pump independent of a gear selection of the transmission and a ground speed of the fire apparatus.

Abstract: A ratio controller includes a housing defining a mixing chamber. The housing has a water inlet configured to receive water from a water supply, an agent inlet configured to receive agent from an agent supply, an outlet configured to output an agent-water solution, a first pressure port extending through a sidewall of the housing at a first position proximate the water inlet, and a second pressure port extending through the sidewall of the housing at a second position proximate the mixing chamber.

Abstract: A vehicle includes an energy storage system, a battery cooling system, and a thermal event management system. The energy storage system includes a battery arranged within a battery housing. The battery cooling system includes a first conduit positioned internal to the battery housing and adjacent the battery. The first conduit is configured to facilitate circulating a first fluid through the battery housing to thermally regulate the battery. The thermal event management system includes a second conduit with a fluid diverter positioned therealong. The second conduit is positioned adjacent to at least one of the battery or the battery housing. The second conduit is configured to receive a second fluid. The fluid diverter is configured to facilitate selectively providing fluid communication between the second conduit and the battery housing so that the second fluid flows out of the second conduit and at least one of into or around the battery housing.

Abstract: An electrified vehicle includes a chassis, an energy storage system supported by the chassis, and a battery cooling system. The energy storage system includes a battery positioned within a battery housing. The battery cooling system includes a conduit positioned adjacent at least one of the battery or the battery housing and a fluid diverter positioned along the conduit. The fluid diverter is configured to facilitate selectively providing fluid communication between the conduit and the battery housing so that a fluid flowing through the conduit flows out of the conduit and at least one of into or around the battery housing.

Abstract: A fire apparatus includes a chassis, a cab coupled to the chassis, a pump system coupled to the chassis and positioned at least partially behind the cab, and a driveline. The driveline includes a prime mover positioned beneath the cab and coupled to the chassis, a transmission, a sandwiched power take-off unit, and a brake system. The sandwiched power take-off unit is positioned between (a) the prime mover and (b) the transmission and the pump system. The brake system is positioned between the sandwiched power take-off unit and the pump system.

Abstract: A vehicle includes an energy storage system, a battery cooling system, and a thermal event management system. The energy storage system includes a battery arranged within a battery housing. The battery cooling system includes a first conduit positioned internal to the battery housing and adjacent the battery. The first conduit is configured to facilitate circulating a first fluid through the battery housing to thermally regulate the battery. The thermal event management system includes a second conduit with a fluid diverter positioned therealong. The second conduit is positioned adjacent to at least one of the battery or the battery housing. The second conduit is configured to receive a second fluid. The fluid diverter is configured to facilitate selectively providing fluid communication between the second conduit and the battery housing so that the second fluid flows out of the second conduit and at least one of into or around the battery housing.

Abstract: An electrified vehicle includes a chassis, an energy storage system supported by the chassis, and a battery cooling system. The energy storage system includes a battery positioned within a battery housing. The battery cooling system includes a conduit positioned adjacent at least one of the battery or the battery housing and a fluid diverter positioned along the conduit. The fluid diverter is configured to facilitate selectively providing fluid communication between the conduit and the battery housing so that a fluid flowing through the conduit flows out of the conduit and at least one of into or around the battery housing.

Abstract: An electrified vehicle includes an energy storage system including a battery disposed within a battery housing and a control system. The control system is configured to detect an onset of a battery thermal event during a charging session of the energy storage system with an external power supply, in response to the onset of the battery thermal event being detected, perform a first action, and in response to the battery thermal event continuing to progress following the first action, perform a second action.

Abstract: An electrified fire fighting vehicle includes an energy storage system, a water tank configured to store water, a pump fluidly coupled to the water tank, a motor electrically coupled to the energy storage system and mechanically coupled to the pump, and a control system. The control system is configured to detect an onset of a thermal event in the energy storage system, control the motor to drive the pump such that the water can be recirculated out of and back into the water tank to facilitate draining a state of charge of the energy storage system, and provide a notification to electrically couple the energy storage system to an external load to facilitate draining the state of charge of the energy storage system.

Abstract: A battery flooding system includes a flood port and an elongated connector. The flood port is configured to be fluidly coupled to a battery housing of an electrified vehicle. The elongated connector is configured to interface with the flood port to facilitate providing a fluid to the flood port from a fluid source such that the fluid is provided within the battery housing.

Abstract: An electrified vehicle includes a chassis, a body coupled to the chassis, a battery enclosure supported by the chassis and defining an internal volume, a battery disposed within the internal volume, and a flood port accessible from an exterior of the electrified vehicle. The flood port is in direct or indirect fluid communication with the internal volume. The flood port is configured to receive a fluid from a fluid source and supply the fluid to the internal volume to cool the battery.

Abstract: A ratio controller includes a housing defining a mixing chamber. The housing has a water inlet configured to receive water from a water supply, an agent inlet configured to receive agent from an agent supply, an outlet configured to output an agent-water solution, a first pressure port extending through a sidewall of the housing at a first position proximate the water inlet, and a second pressure port extending through the sidewall of the housing at a second position proximate the mixing chamber.

Abstract: A fluid system includes a ratio controller. The ratio controller includes a housing, a nozzle, and a diffuser. The housing defines a mixing chamber, a first inlet positioned at a first end of the mixing chamber, an outlet positioned at an opposing second end of the mixing chamber, and a second inlet positioned at a location around a periphery of the mixing chamber between the first inlet and the outlet. The first fluid is configured to receive a first fluid input. The second inlet is configured to receive a second fluid input. The nozzle includes a nozzle inlet positioned proximate the first inlet and a nozzle outlet positioned within the mixing chamber. The diffuser extends from the outlet and outward from the housing. The diffuser includes a diffuser inlet positioned within the mixing chamber.

Abstract: A fire apparatus includes a chassis, a cab coupled to the chassis, a pump system coupled to the chassis and positioned at least partially behind the cab, and a driveline. The driveline includes a prime mover positioned beneath the cab and coupled to the chassis, a transmission, a sandwiched power take-off unit, and a brake system. The sandwiched power take-off unit is positioned between (a) the prime mover and (b) the transmission and the pump system. The brake system is positioned between the sandwiched power take-off unit and the pump system.

Abstract: A fire apparatus includes a chassis, a cab coupled to the chassis, a pump system coupled to the chassis and positioned at least partially behind the cab, and a driveline. The pump system includes a pump. The driveline includes a prime mover positioned beneath the cab and coupled to the chassis, a transmission, and a sandwiched power take-off unit positioned between (a) the prime mover and (b) the transmission and the pump system. The sandwiched power take-off unit facilitates operating the pump independent of a gear selection of the transmission and a ground speed of the fire apparatus.

Abstract: A fluid system includes a ratio controller. The ratio controller includes a housing, a nozzle, and a diffuser. The housing defines a mixing chamber, a first inlet positioned at a first end of the mixing chamber, an outlet positioned at an opposing second end of the mixing chamber, and a second inlet positioned at a location around a periphery of the mixing chamber between the first inlet and the outlet. The first fluid is configured to receive a first fluid input. The second inlet is configured to receive a second fluid input. The nozzle includes a nozzle inlet positioned proximate the first inlet and a nozzle outlet positioned within the mixing chamber. The diffuser extends from the outlet and outward from the housing. The diffuser includes a diffuser inlet positioned within the mixing chamber.

Abstract: A fire apparatus includes a fluid delivery system having a water circuit, an agent circuit, and a ratio controller. The water circuit includes a water pump configured to pump water from a water source through the water circuit. The agent circuit includes an agent tank configured to store an agent, an agent pump configured to pump the agent through the agent circuit, and an agent metering valve positioned to variably restrict a flow of the agent therethrough. The ratio controller is positioned to receive the water and the agent. The ratio controller is configured to provide an agent-water solution to one or more outlets. The agent metering valve is a self-adjusting metering valve having a valve controller configured to adjust at least one of an orifice size and a valve position based on a water flow rate entering the ratio controller and a preselected agent-to-water ratio for the agent-water solution.

Abstract: A fire apparatus includes a fluid delivery system having a water circuit, an agent circuit, and a ratio controller. The water circuit includes a water pump configured to pump water from a water source through the water circuit. The agent circuit includes an agent tank configured to store an agent, an agent pump configured to pump the agent through the agent circuit, and an agent metering valve positioned to variably restrict a flow of the agent therethrough. The ratio controller is positioned to receive the water and the agent. The ratio controller is configured to provide an agent-water solution to one or more outlets. The agent metering valve is a self-adjusting metering valve having a valve controller configured to adjust at least one of an orifice size and a valve position based on a water flow rate entering the ratio controller and a preselected agent-to-water ratio for the agent-water solution.