HYBRID VEHICLE DRIVE SYSTEM AND METHOD AND IDLE REDUCTION SYSTEM AND METHOD

• US 20090095549A1
• Filed: 05/30/2008
• Published: 04/16/2009
• Est. Priority Date: 10/12/2007
• Status: Active Grant

• Current Assignee: Power Technology Holdings LLC
• Original Assignee: Odyne Systems, LLC
• Inventors: Jarmuz, Matthew J., Dalum, Joseph Thomas, Myers, Daniel Francis
• Granted Patent: US 8,978,798 B2
• Time in Patent Office: Days
• US Class Current: 180/65.265
• CPC Class Codes: B28C 5/421 Drives in general B28C5/0831
• CPC Class Codes: B60K 17/28 characterised by arrangement, location, or type of power take-off
• CPC Class Codes: B60K 25/00 Auxiliary drives B60K16/00 takes precedence; arrangements of tyre-inflating pumps mounted on vehicles B60C23/10; driving tyre-inflating pumps B60C; driving engine auxiliaries F02B
• CPC Class Codes: B60K 6/12 by means of a chargeable fluidic accumulator
• CPC Class Codes: B60K 6/42 characterised by the architecture of the hybrid electric vehicle
• CPC Class Codes: B60K 6/48 Parallel type
• CPC Class Codes: B60L 1/00 Supplying electric power to auxiliary equipment of vehicles circuit arrangements for charging batteries H02J7/00
• CPC Class Codes: B60L 1/003 to auxiliary motors, e.g. for pumps, compressors
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/90 using propulsion power supplied by specific means not covered by groups B60L50/10 - B60L50/50, e.g. by direct conversion of thermal nuclear energy into electricity
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/30 including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60Y 2200/14 Trucks; Load vehicles, Busses
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y10S 903/903 : having energy storing means, e.g. battery, capacitor

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.

Claims

17-1. The hybrid vehicle drive system of claim 1 or 2, wherein the system is configured so that equipment can be powered during recharging of the first rechargeable energy source by driving the electric motor via the PTO and driving the hydraulic pump for the equipment.

18. 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:

a second prime mover coupled to a rechargeable energy source;

a component, wherein the first prime mover is configured to provide power through the transmission and the component to operate the second prime mover, and the second prime mover is configured to provide power to the drive shaft through the component; and

an accessory configured to be coupled to the second prime mover, configured so the accessory is operated through the operation of the second prime mover, wherein the accessory is a hydraulic motor and is coupled to a second rechargeable energy source.

19. The system according to claim 18, wherein the component is a power take-off, configured to be engaged and disengaged while the transmission is moving.

20. The system according to claim 18, wherein the component is a transfer case coupled to the drive shaft of the vehicle.

21. The system according to claim 18, wherein the second prime mover operates the accessory when the first prime mover is off for idle reduction.

22. The system according to claim 18, wherein the accessory is coupled to a hydraulic accumulator.

23. In a hybrid vehicle using a drive system including a first prime mover, a first prime mover driven transmission, an electric motor, a first energy source, and a power take off, 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 transmission and the component to operate the electric motor, and wherein the electric motor is configured to provide power to a drive shaft through the component, a hydraulic system comprising:

an accessory configured to be coupled to the second prime mover, configured such that the accessory is operated through the operation of the second prime mover, wherein the accessory is also configured to selectively operate the second prime mover.

24. A method of operating a hybrid vehicle drive system includes a prime mover, a prime mover driven transmission, a second prime mover operable to power a drive shaft alone or in combination with the first prime mover, a PTO component operable to transfer power between the transmission and the second prime mover, a first energy source operable to provide power to or be powered by the second prime mover, the method comprising:

powering an accessory through the operation of the second prime mover.

25. The method of claim 24 further comprising:

powering the second prime mover through operation of the accessory.

26. The method of claim 24, further comprising:

engaging or disengaging the PTO component from the transmission when the portions of the vehicle drive system other than the first prime mover do not require or can be damaged by a connection to the first prime mover.

27. The method of claim 24, further comprising operating the first prime mover to simultaneously provide power to the drive shaft and the second prime mover through the transmission.

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:

a first electric motor coupled to the power source;

a hydraulic motor in direct or indirect mechanical communication with the first electric motor;

a second motor in direct or indirect mechanical communication with the PTO, wherein the second electric motor can receive power from the prime mover driven transmission through the PTO and charge the power source, wherein the hydraulic motor can receive power from the first electric motor, wherein the second electric motor has a higher horsepower rating than the first electric motor.

29. The system of claim 28, wherein the second electric motor can receive power from the prime mover driven transmission through the PTO and charge the power source, wherein the hydraulic motor can receive power from the first electric motor, wherein the second electric motor has a higher horsepower rating than the first electric motor, wherein the second electric motor can also provide power to the transmission through the PTO.