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

• US 20100219007A1
• Filed: 02/22/2010
• Published: 09/02/2010
• Est. Priority Date: 07/12/2007
• Status: Active Grant

• Current Assignee: Power Technology Holdings LLC
• Original Assignee: Odyne Systems, LLC
• Inventors: Jarmuz, Matthew J., Dalum, Joseph Thomas, Ambrosio, Joseph Mario, Myers, Daniel Francis
• Granted Patent: US 8,408,341 B2
• Time in Patent Office: Days
• US Class Current: 180/65.220
• CPC Class Codes: B60K 1/02 comprising more than one electric motor
• CPC Class Codes: B60K 17/28 characterised by arrangement, location, or type of power take-off
• CPC Class Codes: B60K 2025/065 the transmission being fluidic, e.g. hydraulic
• 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 25/06 from the transmission power take-off transmissions having power-take-off B60K17/28
• CPC Class Codes: B60K 6/12 by means of a chargeable fluidic accumulator
• CPC Class Codes: B60K 6/28 characterised by the electric energy storing means, e.g. batteries or capacitors
• CPC Class Codes: B60K 6/442 Series-parallel switching type
• 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 10/10 including control of change-speed gearings
• CPC Class Codes: B60W 10/18 including control of braking systems
• 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: B60W 20/10 Controlling the power contribution of each of the prime movers to meet required power demand
• CPC Class Codes: B60W 20/20 : Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
• CPC Class Codes: B60W 30/1888 : Control of power take off [PTO]
• 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 90/16 : Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y10S 903/93 : Conjoint control of different elements
• CPC Class Codes: Y10T 29/49009 : Dynamoelectric machine

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 pump in direct or indirect mechanical communication with the PTO. The hybrid vehicle drive system further includes an electric motor in direct or indirect mechanical communication with the hydraulic pump. The electric motor can receive power from the prime mover driven transmission through the PTO. The hydraulic pump can receive power from the electric motor when the electric motor rotates, the electric motor using power from the rechargeable energy source, or from the prime mover driven transmission through the PTO.

Claims

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 hydraulic pump in direct or indirect mechanical communication with the PTO;

an electric motor in direct or indirect mechanical communication with the hydraulic pump, wherein the electric motor can receive power from the prime mover driven transmission through the PTO, wherein the hydraulic pump can receive power from the electric motor when the electric motor rotates, the electric motor using power from the rechargeable energy source, or from the prime mover driven transmission through the PTO to rotate.

2. The vehicle drive system of claim 1, wherein the electric motor can provide power to the prime mover driven transmission through the PTO.

3. The electric vehicle drive system of claim 1, wherein the electric motor is driven by the PTO to charge the rechargeable power source while driving the hydraulic pump.

4. The electric vehicle system of claim 1, wherein the hydraulic pump can receive power from the prime mover driven transmission through the PTO or from the electric motor for the hydraulic accumulator.

5. The vehicle drive system of claim 1, wherein the hydraulic motor has a through shaft coupled to be in mechanical communication with the PTO;

and wherein the electric motor is coupled to be in mechanical communication with the hydraulic motor, wherein the hydraulic motor is disposed between the PTO and the electric motor.

6. The vehicle drive system of claim 1, wherein the electric motor includes an extended shaft mechanically coupled to the hydraulic pump.

7. The vehicle drive system of claim 1, wherein the electric motor charges the rechargeable power source and the first prime mover powers a hydraulic system.

8. The vehicle drive system of claim 1, wherein the PTO is disconnected from the first prime mover during steady state highway use.

9. The vehicle drive system of claim 1, wherein the system is configured so that the first rechargeable energy source can be charged by any of:

the first prime mover, an electrical grid, an auxiliary power source, or regenerative braking.

10. The hybrid vehicle drive system of claim 1, 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.

11. 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.

12. The system according to claim 11, wherein the component is a power take-off, configured to be engaged and disengaged while the transmission is moving.

13. The system according to claim 11, wherein the second prime mover operates the accessory when the first prime mover is off for idle reduction.

14. The system according to claim 11, wherein the accessory is coupled to a hydraulic accumulator.

15. The system according to claim 11, wherein the accessory is not coupled to the second rechargeable energy source and provides power to equipment.

16. The system according to claim 11, wherein the accessory is an air compressor.

17. A method of operating a hybrid vehicle drive system includes a first 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.

18. The method of claim 17, 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.

19. The method of claim 17, further comprising operating the first prime mover to simultaneously provide power to the drive shaft and the second prime mover through the transmission.

20. The method of claim 17, further comprising operating the first prime mover to provide power to the accessory through the operation of the second prime mover when the second prime mover alone does not have sufficient power to operate accessory.