Hybrid vehicle drive system and method and idle reduction system and method
First Claim
1. A vehicle drive system for a vehicle including a first prime mover, a first prime mover driven transmission, a rechargeable power source, and a PTO, the vehicle drive system comprising:
- a through shaft;
a hydraulic pump in mechanical communication with the PTO;
an electric motor in mechanical communication with the hydraulic pump, wherein the electric motor can receive power from the first prime mover driven transmission through the PTO, wherein the electric motor can provide power to the prime mover driven transmission through the PTO and wherein the hydraulic pump can receive power from the electric motor when the electric motor rotates, the electric motor using power from the rechargeable power source or from the prime mover driven transmission through the PTO to rotate; and
a clutch disposed in series with the PTO, the hydraulic pump, and the electric motor, the clutch for disengaging the PTO from the hydraulic pump, wherein the electric motor, the hydraulic pump, and the clutch are coupled to the through shaft.
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Accused Products
Abstract
One embodiment relates to a hybrid vehicle drive system for a vehicle including a first prime mover, a first prime mover driven transmission, a rechargeable power source, and a PTO. The hybrid vehicle drive system further includes a hydraulic motor in direct or indirect mechanical communication with the PTO and an electric motor in direct or indirect mechanical communication with the hydraulic motor. The electric motor can provide power to the prime mover driven transmission and receive power from the prime mover driven transmission through the PTO. The hydraulic motor can provide power to the prime mover driven transmission and receive power from the prime mover driven transmission through the PTO.
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Citations
29 Claims
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1. A vehicle drive system for a vehicle including a first prime mover, a first prime mover driven transmission, a rechargeable power source, and a PTO, the vehicle drive system comprising:
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a through shaft; a hydraulic pump in mechanical communication with the PTO; an electric motor in mechanical communication with the hydraulic pump, wherein the electric motor can receive power from the first prime mover driven transmission through the PTO, wherein the electric motor can provide power to the prime mover driven transmission through the PTO and wherein the hydraulic pump can receive power from the electric motor when the electric motor rotates, the electric motor using power from the rechargeable power source or from the prime mover driven transmission through the PTO to rotate; and a clutch disposed in series with the PTO, the hydraulic pump, and the electric motor, the clutch for disengaging the PTO from the hydraulic pump, wherein the electric motor, the hydraulic pump, and the clutch are coupled to the through shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A hybrid vehicle drive system for use with a first prime mover and a first transmission driven by the first prime mover, the system comprising:
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a through shaft; an electric motor coupled to a rechargeable energy source; a PTO, wherein the first prime mover is configured to provide power through the first transmission to the PTO to operate the electric motor, and the electric motor is configured to provide power to a drive shaft through the PTO; a hydraulic pump operated through operation of the electric motor; and a clutch disposed between the hydraulic pump and the PTO, wherein the through shaft is coupled to the electric motor, the hydraulic pump, and the clutch. - View Dependent Claims (18, 19, 20)
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21. A method of operating a hybrid vehicle drive system comprising a prime mover, a prime mover driven transmission, an electric motor operable to power a drive shaft alone or in combination with the first prime mover, a PTO operable to transfer power between the prime mover driven transmission and the electric motor, a first energy source operable to provide power to or receive power from the electric motor, the electric motor being coupled to a through shaft, the through shaft being coupled to a hydraulic pump, the method comprising:
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disengaging a clutch to remove the hydraulic pump from receiving power from the PTO; and powering the hydraulic pump through the operation of the electric motor via the through shaft. - View Dependent Claims (22, 23, 24, 25, 26)
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27. In a hybrid vehicle using a drive system comprising a first prime mover, a first prime mover driven transmission, an electric motor, a first energy source, and a PTO, wherein the electric motor is configured to recharge the first energy source or is powered by the first energy source, wherein the first prime mover is configured to provide power through the first prime mover driven transmission and the PTO to operate the electric motor, and wherein the electric motor is configured to provide power to a drive shaft through the PTO, a hydraulic system comprising:
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a through shaft; a hydraulic pump coupled to the electric motor, the hydraulic pump configured to be operated through the operation of the electric motor; and a clutch disposed between the PTO and the electric motor, wherein the through shaft is coupled to the hydraulic pump, the electric motor and the clutch.
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28. A hybrid drive system for a vehicle including a first prime mover, a first prime mover driven transmission, a rechargeable energy source, and a PTO, the hybrid vehicle drive system comprising:
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a through shaft; a first electric motor electrically coupled to the rechargeable energy source and mechanically coupled to the through shaft, the first electric motor capable of providing power to the first prime mover driven transmission via the PTO; a hydraulic pump mechanically coupled to the through shaft; and a clutch in mechanical communication with the PTO and mechanically coupled to the through shaft, wherein the clutch can receive power from the prime mover driven transmission through the PTO and provide the power from the prime mover driven transmission to the hydraulic pump via the through shaft, wherein the hydraulic pump does not receive power from the prime mover driven transmission when the clutch disconnects the PTO from the through shaft. - View Dependent Claims (29)
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Specification