Magnetic field activated powertrain mount

• US 9,874,264 B2
• Filed: 11/18/2015
• Issued: 01/23/2018
• Est. Priority Date: 11/18/2015
• Status: Active Grant

• Current Assignee: Toyota Motor Engineering & Manufacturing North America Incorporated (Toyota Motor Corporation)
• Original Assignee: Toyota Motor Engineering & Manufacturing North America Incorporated (Toyota Motor Corporation)
• Inventors: Gaither, Geoffrey D.
• Primary Examiner(s): Shriver, II, James A
• Assistant Examiner(s): Cassidy, Brian L
• Application Number:
  US14/944,732
• Publication Number:
  US 20170138434A1
• Time in Patent Office: 797 Days
• Field of Search: 180291
• CPC Class Codes: B60K 5/1208 Resilient supports B60K5/1241 - B60K5/1291 take precedence
• CPC Class Codes: B60K 5/1283 Adjustable supports, e.g. the mounting or the characteristics being adjustable
• CPC Class Codes: F16F 13/00 Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs F16F5/00, F16F6/00, F16F9/003 take precedence
• CPC Class Codes: F16F 13/002 comprising at least one fluid spring F16F13/005, F16F13/02, F16F13/04 take precedence
• CPC Class Codes: F16F 13/305 magnetorheological
• CPC Class Codes: F16F 15/03 using magnetic or electromagnetic means F16F9/53, F16F15/005 take precedence
• CPC Class Codes: F16F 2222/06 Magnetic or electromagnetic
• CPC Class Codes: F16F 2222/12 Fluid damping
• CPC Class Codes: F16F 6/00 Magnetic springs magnetic spring arrangements for the suppression of vibration in systems F16F15/03; Fluid magnetic springs , i.e. magnetic spring combined with a fluid
• CPC Class Codes: F16F 9/103 Devices with one or more members moving linearly to and fro in chambers, any throttling effect being immaterial, i.e. damping by viscous shear effect only F16F9/53 takes precedence

Abstract

A powertrain mount is connectable between a vehicle'"'"'s powertrain component and body structure. The powertrain mount includes a moveable core and a housing for the moveable core. The housing supports the moveable core for movement relative to the housing, in one or more open degrees of freedom, to one or more floating poses where the moveable core is rigidly mechanically decoupled from the housing in the open degrees of freedom. A magnetic field generation system includes one or more housing-side magnetic devices at the housing and one or more moveable-core-side magnetic devices at the moveable core. The housing-side magnetic devices and the moveable-core-side magnetic devices are configured to collectively generate mutually balanced magnetic fields between the housing and the moveable core in the open degrees of freedom that retentively locate the moveable core in one or more floating poses.

Claims

1. A system for managing the transfer of the movement of a vehicle'"'"'s powertrain component to the vehicle'"'"'s body structure, comprising:

a powertrain mount connectable between a vehicle'"'"'s powertrain component and body structure, the powertrain mount including a moveable core and a housing for the moveable core, the housing supporting the moveable core for movement relative to the housing, in one or more open degrees of freedom, to one or more floating poses where the moveable core is rigidly mechanically decoupled from the housing in each of the open degrees of freedom; and

a magnetic field generation system, the magnetic field generation system including one or more housing-side magnetic devices at the housing and one or more moveable-core-side-magnetic devices at the moveable core, the housing-side magnetic devices and the moveable-core-side magnetic devices configured to collectively generate mutually balanced magnetic fields between the housing and the moveable core that attract and/or repel each other in sustained mutual balance in each of the open degrees of freedom to thereby retentively locate the moveable core in at least one of the floating poses.

2. The system of claim 1, wherein one or more of the housing-side magnetic devices and the moveable-core-side magnetic devices are electromagnets, the magnetic field generation system further including:

a computing device in communication with the electromagnets, the computing device configured to control the actuation of the electromagnets to generate, at least in part, the mutually balanced magnetic fields.

3. The system of claim 1, wherein:

the housing supports the moveable core for movement relative to the housing, in the open degrees of freedom, to one or more resting poses where the moveable core is rigidly mechanically coupled to the housing in at least one of the open degrees of freedom, and

the housing-side magnetic devices and the moveable-core-side magnetic devices are configured to collectively generate mutually unbalanced magnetic fields between the housing and the moveable core that attract and/or repel each other in sustained mutual unbalance in the at least one of the open degrees of freedom to thereby retentively locate the moveable core in at least one of the resting poses.

4. The system of claim 3, wherein one or more of the housing-side magnetic devices and the moveable-core-side magnetic devices are electromagnets, the magnetic field generation system further including:

a computing device in communication with the electromagnets, the computing device configured to control the actuation of the electromagnets to generate, at least in part, the mutually unbalanced magnetic fields.

5. The system of claim 1, wherein the open degrees of freedom include a translational degree of freedom along a longitudinal axis of the housing.

6. The system of claim 1, wherein the open degrees of freedom include one or more rotational degrees of freedom about a point at which the moveable core is supported by the housing.

7. The system of claim 1, wherein the open degrees of freedom have a common reference frame at a point at which the moveable core is supported by the housing, and the open degrees of freedom include a translational degree of freedom along a longitudinal axis of the housing that includes the point, and one or more rotational degrees of freedom about the point.

8. The system of claim 1, wherein the housing defines a reservoir and holds a damping fluid in the reservoir around the moveable core, the damping fluid viscously damping the movement of the moveable core in the open degrees of freedom.

9. The system of claim 1, wherein the housing defines a reservoir and holds a damping fluid in the reservoir around the moveable core, the moveable core displacing the damping fluid when the moveable core moves in the open degrees of freedom, further comprising:

a hydraulic regeneration system configured to convert the damping fluid'"'"'s displacement into electrical energy.

10. A vehicle, comprising:

a body structure, the body structure enclosing an engine compartment;

a powertrain component housed in the engine compartment;

a powertrain mount supporting the powertrain component with respect to the body structure, the powertrain mount including;

a moveable core, the moveable core having a moveable-core-side connection portion connected to one of the body structure or the powertrain component, and

a housing for the moveable core, the housing having a housing-side connection portion connected to the other of the body structure or the powertrain component, and supporting the moveable core for movement relative to the housing, in one or more open degrees of freedom, to one or more floating poses where the moveable core is rigidly mechanically decoupled from the housing in each of the open degrees of freedom; and

a magnetic field generation system, the magnetic field generation system including one or more housing-side magnetic devices at the housing and one or more moveable-core-side magnetic devices at the moveable core, the housing-side magnetic devices and the moveable-core-side magnetic devices configured to collectively generate mutually balanced magnetic fields between the housing and the moveable core that attract and/or repel each other in sustained mutual balance in each of the open degrees of freedom to thereby retentively locate the moveable core in at least one of the floating poses.

11. The vehicle of claim 10, wherein one or more of the housing-side magnetic devices and the moveable-core-side magnetic devices are electromagnets, the magnetic field generation system further including:

a computing device in communication with the electromagnets, the computing device configured to control the actuation of the electromagnets to generate, at least in part, the mutually balanced magnetic fields.

12. The vehicle of claim 10, wherein:

the housing supports the moveable core for movement relative to the housing, in the open degrees of freedom, to one or more resting poses where the moveable core is rigidly mechanically coupled to the housing in at least one of the open degrees of freedom, and

the housing-side magnetic devices and the moveable-core-side magnetic devices are configured to collectively generate mutually unbalanced magnetic fields between the housing and the moveable core that attract and/or repel each other in sustained mutual unbalance in the at least one of the open degrees of freedom to thereby retentively locate the moveable core in at least one of the resting poses.

13. The vehicle of claim 12, wherein one or more of the housing-side magnetic devices and the moveable-core-side magnetic devices are electromagnets, the magnetic field generation system further including:

a computing device in communication with the electromagnets, the computing device configured to control the actuation of the electromagnets to generate, at least in part, the mutually unbalanced magnetic fields.

14. The vehicle of claim 10, wherein the open degrees of freedom include a translational degree of freedom along a longitudinal axis of the housing.

15. The vehicle of claim 10, wherein the open degrees of freedom include one or more rotational degrees of freedom about a point at which the moveable core is supported by the housing.

16. The vehicle of claim 10, wherein the open degrees of freedom have a common reference frame at a point at which the moveable core is supported by the housing, and the open degrees of freedom include a translational degree of freedom along a longitudinal axis of the housing that includes the point, and one or more rotational degrees of freedom about the point.

17. The vehicle of claim 10, wherein the housing defines a reservoir and holds a damping fluid in the reservoir around the moveable core, the damping fluid viscously damping the movement of the moveable core in the open degrees of freedom.

18. The vehicle of claim 10, wherein the housing defines a reservoir and holds a damping fluid in the reservoir around the moveable core, the moveable core displacing the damping fluid when the moveable core moves in the open degrees of freedom, further comprising:

a hydraulic regeneration system configured to convert the damping fluid'"'"'s displacement into electrical energy.

19. A system for managing the transfer of the movement of a vehicle'"'"'s powertrain component to the vehicle'"'"'s body structure, comprising:

a powertrain mount, the powertrain mount including;

a moveable core, the moveable core having a moveable-core-side connection portion configured for connection to one of a vehicle'"'"'s body structure or powertrain component, and

a housing for the moveable core, the housing having a housing-side connection portion configured for connection to the other of the vehicle'"'"'s body structure or powertrain component, and supporting the moveable core for movement relative to the housing, in one or more open degrees of freedom, to one or more floating poses where the moveable core is rigidly mechanically decoupled from the housing in each of the open degrees of freedom; and

a magnetic field generation system, the magnetic field generation system including;

one or more housing-side electromagnets at the housing,

one or more moveable-core-side electromagnets at the moveable core, and

a computing device in communication with the housing-side electromagnets and the moveable-core-side electromagnets, the computing device configured to control the actuation of the housing-side electromagnets and the moveable-core-side electromagnets to generate, at least in part, mutually balanced magnetic fields between the housing and the moveable core that attract and/or repel each other in sustained mutual balance in each of the open degrees of freedom to thereby retentively locate the moveable core in at least one of the floating poses.

20. The system of claim 19, wherein:

the housing supports the moveable core for movement relative to the housing, in the open degrees of freedom, to one or more resting poses where the moveable core is rigidly mechanically coupled to the housing in at least one of the open degrees of freedom, and

the computing device is configured to control the actuation of the housing-side electromagnets and the moveable-core-side electromagnets to generate, at least in part, mutually unbalanced magnetic fields between the housing and the moveable core that attract and/or repel each other in sustained mutual unbalance in the at least one of the open degrees of freedom to thereby retentively locate the moveable core in at least one of the resting poses.