Hybrid vehicle drive system and method and idle reduction system and method

• US 8,905,166 B2
• Filed: 09/27/2012
• Issued: 12/09/2014
• Est. Priority Date: 07/12/2007
• Status: Active Grant

• Current Assignee: Power Technology Holdings LLC
• Original Assignee: Odyne Systems, LLC
• Inventors: Dalum, Joseph Thomas, Jarmuz, Matthew J., Myers, Daniel Francis, Ambrosio, Joseph Mario
• Primary Examiner(s): Walters, John
• Assistant Examiner(s): SWENSON, BRIAN L
• Application Number:
  US13/629,533
• Publication Number:
  US 20130096754A1
• Time in Patent Office: 803 Days
• Field of Search: 180/65.22, 180/65.25, 180/65.23, 180/65.26, 180/65.275, 180/65.285, 180/367
• US Class Current: 180/65.22
• 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

A hybrid vehicle drive system for a vehicle includes a first prime mover, a first prime mover driven transmission, and a rechargeable power source. The hybrid vehicle drive system further includes an interface between the transmission and the prime mover for coupling to an electric motor. The electric motor can be in direct or indirect mechanical communication with a hydraulic pump. The electric motor can receive power from the prime mover driven transmission through the interface.

Claims

1. 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; and

a PTO interface, wherein the first prime mover is configured to provide power through the PTO interface to the second prime mover to operate the second prime mover, and the second prime mover is configured to provide power to a drive shaft through the PTO interface,

wherein an electrical control system monitors torque of the second prime mover and the first prime mover to ensure a turbine torque limit associated with the first transmission is not exceeded, and

wherein the second prime mover is configured to provide additional power to the drive shaft when the first prime mover provides power to the drive shaft through the transmission.

2. The system according to claim 1, wherein the electrical control system monitors the torque of the first prime mover by monitoring input torque after multiplication by a torque converter.

3. The system according to claim 1, wherein the electrical control system monitors power of the second prime mover and the first prime mover to ensure the turbine power limit is not exceeded.

4. The system according to claim 1, wherein an accessory is coupled to the second prime mover and a torque of the accessory is monitored to ensure the turbine torque limit is not exceeded.

5. The system according to claim 4, wherein the electrical control system sums the torque of the first prime mover, the second prime mover, and the accessory.

6. The system according to claim 1, wherein the electrical control system ensures the torque limits of other components in the first transmission are not exceeded.

7. The system according to claim 1, wherein the second prime mover is also configured to provide sole power to the drive shaft when no power is provided by the first prime mover to the drive shaft through the transmission.

8. The system according to claim 1, further comprising at least one more PTO interface configured to channel power to the drive shaft through the transmission.

9. 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 PTO interface, wherein the first prime mover is configured to provide power through the PTO interface to the second prime mover to operate the second prime mover, and the second prime mover is configured to provide power to a drive shaft through the PTO interface; and

an electrical control system configured to monitor torque of the second prime mover and the first prime mover to ensure a turbine torque limit associated with the first transmission is not exceeded,

wherein the second prime mover is configured to provide additional power to the rechargeable energy source by using continuous power from the first prime mover when the first prime mover provides power to the drive shaft through the transmission, wherein the second prime mover is configured to provide additional power to the drive shaft when the first prime mover provides power to the drive shaft through the transmission.

10. The system according to claim 9, wherein the electrical control system monitors the torque of the first prime mover by monitoring input torque after multiplication by a torque converter.

11. The system according to claim 9, wherein the electrical control system monitors power of the second prime mover and the first prime mover to ensure the turbine power limit is not exceeded.

12. The system according to claim 9, wherein an accessory is coupled to the second prime mover and a torque of the accessory is monitored to ensure the turbine torque limit is not exceeded.

13. The system according to claim 12, wherein the electrical control system sums the torque of the first prime mover, the second prime mover, and the accessory.

14. The system according to claim 9, wherein the second prime mover is configured to provide the additional power to the rechargeable energy source by using the continuous power from the first prime mover when the first prime mover provides power to the transmission while the vehicle is driving, the driving including periods of time when the vehicle is in motion and temporarily at rest.

15. The system according to claim 9, wherein the second prime mover is configured to provide the additional power to the rechargeable energy source by using the continuous power from the first prime mover when the first prime mover provides power to the transmission while the vehicle is at temporarily at rest with a brake pedal depressed.

16. A hybrid vehicle drive system for use with a first prime mover and a first transmission driven by the first prime mover, wherein the first prime mover is an internal combustion engine, the system comprising:

a second prime mover coupled to a rechargeable energy source, wherein the second prime mover is an electric motor;

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

an electrical control system configured to monitor torque of the second prime mover and the first prime mover to ensure a turbine torque limit associated with the first transmission is not exceeded,

wherein the second prime mover is configured to provide additional power to the drive shaft through the PTO interface when the first prime mover provides power to the drive shaft, provide power to the rechargeable energy source, and directly drive an accessory.

17. The system according to claim 16, wherein the accessory is a hydraulic pump.

18. The system according to claim 16, wherein the electric control system is configured to monitor the torque of the second prime mover and the first prime mover to ensure a power take off drive gear rating associated with the first transmission is not exceeded.