Axle hybrid drive

• US 10,029,554 B2
• Filed: 02/13/2013
• Issued: 07/24/2018
• Est. Priority Date: 03/09/2012
• Status: Active Grant

• Current Assignee: Schaeffler Technologies AG & Co.KG (INA-Holding Schaeffler GmbH & Co. KG)
• Original Assignee: Schaeffler Technologies AG & Co.KG (INA-Holding Schaeffler GmbH & Co. KG)
• Inventors: Friedmann, Oswald
• Primary Examiner(s): Winner, Tony H
• Assistant Examiner(s): Stabley, Michael R
• Application Number:
  US14/382,121
• Publication Number:
  US 20150328972A1
• Time in Patent Office: 1,987 Days
• Field of Search: 180243
• CPC Class Codes: B60K 6/383 One-way clutches or freewheel devices
• CPC Class Codes: B60K 6/48 Parallel type
• CPC Class Codes: B60K 6/52 Driving a plurality of drive axles, e.g. four-wheel drive
• CPC Class Codes: B60W 2030/1809 Without torque flow between driveshaft and engine, e.g. with clutch disengaged or transmission in neutral
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y10S 903/902 Prime movers comprising electrical and internal combustion motors

Abstract

An axle hybrid drive for a hybrid vehicle (1), including an internal combustion engine (6) drivingly connected to a first vehicle axle (11), and an electric motor (10) drivingly connected to a second vehicle axle (12). The invention is characterized in that the internal combustion engine (6), or a transmission (7) associated with the internal combustion engine (6), is decoupled in terms of a driving force from an output shaft of the first vehicle axle (11).

Claims

1. An axle hybrid drive for a hybrid vehicle comprising an internal combustion engine, drivingly connected to a first vehicle axle, and an electric motor, drivingly connected to a second vehicle axle, wherein the first vehicle axle includes a wheel, and wherein at least one of the internal combustion engine or a transmission allocated to the internal combustion engine are decoupled in terms of a driving force from the wheel and coupled in terms of a driving force to the wheel, wherein the decoupling occurs at the wheel,

further comprising a freewheel arrangement, the at least one of the internal combustion engine or the transmission are decoupled via the freewheel arrangement from the wheel of the first vehicle axle, and

the freewheel arrangement includes a freewheel arranged between an end of a cardan shaft and a wheel bearing of the wheel of the first vehicle axle.

2. The axle hybrid drive according to claim 1, wherein the freewheel arrangement of the at least one of the internal combustion engine or the transmission is arranged downstream at a side of the wheel.

3. The axle hybrid drive according to claim 1, wherein the freewheel is embodied as a clamp roll, clamp body, or ratchet freewheel.

4. The axle hybrid drive according to claim 1, wherein the electric motor is directly connected to the second vehicle axle.

5. An axle hybrid drive for a hybrid vehicle comprising an internal combustion engine, drivingly connected to a first vehicle axle, and an electric motor, drivingly connected to a second vehicle axle, wherein the first vehicle axle includes a wheel, and wherein at least one of the internal combustion engine or a transmission allocated to the internal combustion engine are decoupled in terms of a driving force from the wheel and coupled in terms of a driving force to the wheel, wherein the decoupling occurs at the wheel,

further comprising a freewheel arrangement, the at least one of the internal combustion engine or the transmission are decoupled via the freewheel arrangement from the wheel of the first vehicle axle,

wherein the freewheel arrangement locks when a driving speed is greater than a driven speed of the first vehicle axle.

6. The axle hybrid drive according to claim 5, wherein the freewheel arrangement includes a freewheel arranged between an end of a cardan shaft and a wheel bearing of the wheel of the first vehicle axle.

7. The axle hybrid drive according to claim 5, wherein the freewheel arrangement includes a freewheel integrated in the vehicle wheel.

8. An axle hybrid drive for a hybrid vehicle comprising an internal combustion engine, drivingly connected to a first vehicle axle, and an electric motor, drivingly connected to a second vehicle axle, wherein the first vehicle axle includes a wheel,

at least one of the internal combustion engine or a transmission allocated to the internal combustion engine are decoupled in terms of a driving force from the wheel, and

wherein an electric heating device is allocated to a cooling device of the internal combustion engine, which is connected to an electric energy storage unit allocated to the electric motor.