CONTROL METHOD FOR OPTIMIZING THE OPERATION OF A HYBRID DRIVE SYSTEM

• US 20090127011A1
• Filed: 11/21/2008
• Published: 05/21/2009
• Est. Priority Date: 11/21/2007
• Status: Abandoned Application

• Current Assignee: Parker-Hannifin Corporation
• Original Assignee: Parker-Hannifin Corporation
• Inventors: Zhang, Yisheng
• Application Number:
  US12/275,376
• Publication Number:
  US 20090127011A1
• Time in Patent Office: Days
• US Class Current: 180/65.280
• CPC Class Codes: B60K 2006/126 the hydraulic accumulator starts the engine
• CPC Class Codes: B60K 6/12 by means of a chargeable fluidic accumulator
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2552/15 Road slope, i.e. the inclination of a road segment in the longitudinal direction
• CPC Class Codes: F16H 2059/663 Road slope
• CPC Class Codes: F16H 61/4096 with pressure accumulators
• CPC Class Codes: F16H 61/4148 Open loop circuits
• CPC Class Codes: Y02T 10/62 Hybrid vehicles

Abstract

A control apparatus and method are provided for operating a hybrid drive system that can optimize the storage of energy during different operating modes, such as during collection modes and transportation modes of a garbage collection vehicle. Initially, a hybrid drive system is provided for use with a drive train system and/or vehicle that is operable in first and second operating modes. An operating mode parameter of the drive train system and/or vehicle is sensed. Then, the operation of the hybrid drive system is adjusted in response to the operating mode parameter of the drive train system and/or vehicle.

Claims

1. A method for operating a hybrid drive system for use with a drive train system and/or vehicle that is operable in first and second operating modes comprising the steps of:

(a) providing a hybrid drive system for use with a drive train system and/or vehicle that is operable in first and second operating modes;

(b) sensing an operating mode parameter of the drive train system and/or vehicle; and

(c) adjusting the operation of the hybrid drive system in response to the operating mode parameter of the drive train system and/or vehicle.

2. The method defined in claim 1 wherein step (a) is performed by providing a primary pump in the hybrid drive system, and wherein step (c) is performed by adjusting the operation of the primary pump.

3. The method defined in claim 1 wherein step (a) is performed by providing an engine in the drive train system, and wherein step (c) is performed by adjusting the operation of the engine.

4. The method defined in claim 1 wherein step (a) is performed by providing a primary pump in the hybrid drive system and by providing an engine in the drive train system, and wherein step (c) is performed by adjusting the operation of the primary pump and by adjusting the operation of the engine.

5. The method defined in claim 1 wherein step (b) is performed by sensing a speed of the drive train system and/or the vehicle.

6. The method defined in claim 1 wherein step (b) is performed by sensing an inclination of the drive train system and/or the vehicle.

7. The method defined in claim 1 wherein step (b) is performed by sensing an activation and/or use of an ancillary device that is provided on the vehicle.

8. The method defined in claim 1 wherein step (a) includes the additional step of initially determining whether the drive train system and/or vehicle is operating in first and second operating modes.

9. The method defined in claim 8 wherein the step of initially determining whether the drive train system and/or vehicle is operating in first and second operating modes is performed by comparing a previously operating mode parameter with a current operating parameter.

10. The method defined in claim 1 wherein step (c) is performed by determining a reference speed of the drive train system and/or vehicle, estimating the weight of the vehicle, using the reference speed and the estimated weight to determine an amount of regenerative energy that is potentially available, and adjusting the operation of the hybrid drive system in response to the determined amount of regenerative energy.