Vehicle with accessory drive

Patent metadata

Field	Value
Publication number	US-2021107361-A1
Application number	US-202017066074-A
Country	US
Kind code	A1
Filing date	Oct 8, 2020
Priority date	Oct 11, 2019
Publication date	Apr 15, 2021
Grant date	—

Abstract

A fire fighting vehicle includes a chassis, tractive elements coupled to the chassis, a pump coupled to the chassis, a discharge fluidly coupled to the pump, an accessory module coupled to the chassis, and an electric motor coupled to the chassis, the pump, and the accessory module. The accessory module is configured to receive mechanical energy and provide at least one of electrical energy or fluid energy. The electric motor is configured to drive (a) the pump to provide fluid to the discharge such that the fluid is expelled from the discharge and (b) the accessory module to provide the at least one of electrical energy or fluid energy.

First claim

1 . A fire fighting vehicle, comprising:
a chassis; a plurality of tractive elements coupled to the chassis; a pump coupled to the chassis; a discharge fluidly coupled to the pump; an accessory module coupled to the chassis and configured to receive mechanical energy and provide at least one of electrical energy or fluid energy; and an electric motor coupled to the chassis, the pump, and the accessory module and configured to drive (a) the pump to provide fluid to the discharge such that the fluid is expelled from the discharge and (b) the accessory module to provide the at least one of electrical energy or fluid energy.

2 . The fire fighting vehicle of claim 1 , wherein the electric motor is coupled to the plurality of tractive elements and configured to drive the plurality of tractive elements to propel the fire fighting vehicle.

3 . The fire fighting vehicle of claim 2 , further comprising an engine coupled to the chassis and to the plurality of tractive elements, wherein the engine is configured to drive the plurality of tractive elements to propel the fire fighting vehicle.

4 . The fire fighting vehicle of claim 3 , further comprising a first clutch positioned to couple the engine to the plurality of tractive elements when engaged, wherein the first clutch decouples the engine from the plurality of tractive elements when the first clutch is disengaged.

5 . The fire fighting vehicle of claim 4 , wherein the electric motor is configured to drive the accessory module and the plurality of tractive elements when the first clutch is disengaged.

6 . The fire fighting vehicle of claim 4 , further comprising a second clutch positioned to couple the electric motor to the pump when engaged, wherein the second clutch decouples the electric motor from the pump when disengaged.

7 . The fire fighting vehicle of claim 6 , wherein the second clutch decouples the electric motor and the engine from the pump when disengaged.

8 . The fire fighting vehicle of claim 6 , wherein the electric motor is configured to drive the accessory module and the plurality of tractive elements when the first clutch is disengaged.

9 . The fire fighting vehicle of claim 1 , further comprising an engine coupled to the chassis and the pump, wherein the engine is configured to drive the pump to provide the fluid to the discharge such that the fluid is expelled from the discharge.

10 . The fire fighting vehicle of claim 9 , further comprising a first clutch positioned to selectively couple the engine to the pump when engaged, wherein the first clutch decouples the engine from the pump when disengaged.

11 . The fire fighting vehicle of claim 10 , further comprising a second clutch positioned to selectively couple the electric motor to the pump when engaged, wherein the second clutch decouples the electric motor from the pump when disengaged.

12 . The fire fighting vehicle of claim 10 , wherein the first clutch decouples the electric motor from the pump when disengaged.

13 . The fire fighting vehicle of claim 1 , wherein the accessory module includes a compressor configured to receive mechanical energy from the electric motor and provide a compressed gas.

14 . The fire fighting vehicle of claim 1 , wherein the pump is a first pump, wherein the accessory module includes a second pump configured to receive mechanical energy from the electric motor and provide a pressurized liquid.

15 . The fire fighting vehicle of claim 1 , further comprising a tank coupled to the chassis and fluidly coupled to the pump, and wherein the electric motor is configured to drive the pump to move the fluid from the tank to the discharge such that the fluid is expelled from the discharge.

16 . The fire fighting vehicle of claim 1 , wherein the accessory module includes an electrical energy generator configured to receive mechanical energy from the electric motor and provide the electrical energy.

17 . The fire fighting vehicle of claim 1 , wherein the pump is a first pump, wherein the accessory module a compressor, a second pump, and an electrical energy generator each coupled to the electric motor.

18 . A vehicle, comprising:
a chassis; an engine; a plurality of tractive elements coupled to the chassis; an electric motor coupled to the chassis; an accessory module coupled to the electric motor, the accessory module including at least one of (a) an electrical energy generator coupled to the electric motor and configured to provide electrical energy, (b) a pump coupled to the electric motor and configured to provide pressurized liquid, or (c) a compressor coupled to the electric motor and configured to provide compressed gas; and a clutch positioned to couple the engine to the plurality of tractive elements, the electric motor, and the accessory module, wherein the clutch decouples the engine from the plurality of tractive elements, the electric motor, and the accessory module when disengaged.

19 . A method of operating a vehicle, comprising:
providing, by an energy storage device, first electrical energy to an electric motor; driving, by the electric motor, a first pump to provide a flow of a first fluid; and at least one of:
driving, by the electric motor, an electrical energy generator to generate second electrical energy;
driving, by the electric motor, a compressor to provide compressed gas; or
driving, by the electric motor, a second pump to provide a flow of a second fluid.

20 . The method of claim 19 , further comprising:
engaging a clutch to couple an engine to the first pump; driving, by the engine, the first pump to provide the flow of the first fluid; and disengaging a second clutch to decouple the engine and the electric motor from the first pump.

Assignees

• Oshkosh Corp

Inventors

• Linsmeier Eric R
• Shively Jason
• Newlin Seth
• Kay David
• Bermingham Jack
• Morrow Jon
• Steinberger David

Classifications

• Y02T10/70

  Energy storage systems for electromobility, e.g. batteries · CPC title

• B60W20/13

  in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion · CPC title

• B60L50/61

  by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles · CPC title

• Y02T10/62

  Hybrid vehicles · CPC title

• B60W20/40

  Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers {(power-up or power-down of the driveline B60W30/192)} · CPC title