HYBRID DRIVE

• US 20090107744A1
• Filed: 09/17/2008
• Published: 04/30/2009
• Est. Priority Date: 09/18/2007
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Bauer, Richard, Mark, Alexander, Feuser, Alfred, Foersterling, Heino, Schaeffer, Rudolf, Dantlgraber, Joerg
• Application Number:
  US12/212,268
• Publication Number:
  US 20090107744A1
• Time in Patent Office: Days
• US Class Current: 180/65.225
• CPC Class Codes: B60K 6/12 by means of a chargeable fluidic accumulator
• CPC Class Codes: B60K 6/24 characterised by the combustion engines
• CPC Class Codes: B60K 6/46 Series type
• CPC Class Codes: B60K 6/48 Parallel type
• CPC Class Codes: Y02T 10/62 Hybrid vehicles

Abstract

A hybrid drive is disclosed, having at least two primary assemblies and a hydraulic or electric machine; one primary assembly and the hydraulic or electric machine are operatively connected to a drive train, and the hydraulic or electric machine, with this primary assembly, forms a parallel hybrid drive, and with the other primary assembly, it forms a serial hybrid drive.

Claims

1. A hybrid drive, comprising a drive shaft;

at least two primary assemblies;

a machine selected from the group consisting of a hydraulic machine and an electric machine, said machine and one of said primary assemblies being operatively connected to said drive shaft, said machine together with said one primary assembly forming a serial hybrid drive and with the other of said primary assemblies forming a parallel hybrid drive.

2. A hybrid drive as defined in claim 1, wherein said primary assemblies have a different size relative to power of said primary assemblies.

3. A hybrid drive as defined in claim 2, wherein a larger one of said primary assembles is operatively connected to said drive shaft and is an internal combustion engine.

4. A hybrid drive as defined in claim 2, wherein a smaller one of said primary assemblies forms a serial hybrid drive with said machine and is a free-piston engine.

5. A hybrid drive as defined in claim 4, further comprising a low-pressure reservoir and a high-pressure reservoir, said free-piston engine being connected on a low-pressure side to said low-pressure reservoir via a low-pressure line and on a high-pressure side to said high-pressure reservoir via a high-pressure line.

6. A hybrid drive as defined in claim 1, wherein said hydraulic machine is connected to a high-pressure line and a low-pressure line.

7. A hybrid drive as defined in claim 1, further comprising a clutch and a transmission, said hydraulic machine being operatively connected to said drive shaft via said clutch and said transmission.

8. A hybrid drive as defined in claim 1, wherein said hydraulic machine is configured as a machine selected from the group consisting of a hydraulic pump and a hydraulic motor.

9. A hybrid drive as defined in claim 3, further comprising a clutch and a transmission, said internal combustion engine being operatively connected to said drive shaft via said clutch and said transmission.

10. A hybrid drive as defined in claim 1, further comprising a differential gear and a wheel drive located on it, said drive shaft being operatively connected to said differential gear and to said wheel drive.

11. A hybrid drive as defined in claim 1, wherein one of said primary assemblies is formed as an assembly selected from the group consisting of an internal combustion engine, a hydraulic motor, and both and drives said drive shaft.

12. A hybrid drive as defined in claim 10, further comprising a differential gear, and a wheel drive, one of said assemblies being a hydraulic pump, said wheel drive driving said hydraulic pump via said differential gear and said drive shaft.