Magnetic engine vibration isolator

Patent metadata

Field	Value
Publication number	US-10612622-B2
Application number	US-201815970920-A
Country	US
Kind code	B2
Filing date	May 4, 2018
Priority date	May 4, 2018
Publication date	Apr 7, 2020
Grant date	Apr 7, 2020

Abstract

A magnetic engine vibration isolator, including: at least one block magnet arranged to be connected to a block for an internal combustion engine; and a crank magnet arranged to be connected to a crankshaft for the internal combustion engine. A magnetic engine vibration isolator, including: a first block magnet arranged to be connected to a block for an internal combustion engine and extend about an axis of rotation for a crankshaft for the internal combustion engine; a second block magnet arranged to be connected to the block and extend about the axis of rotation; and a crank magnet arranged to be connected to the crankshaft and disposed between the first block magnet and the second block magnet.

First claim

The invention claimed is:

1. A magnetic engine vibration isolator, comprising:
at least one block magnet arranged to be connected to a block for an internal combustion engine; and,
a crank magnet arranged to be connected to a crankshaft for the internal combustion engine, wherein for a first circumferential position of the crankshaft about an axis of rotation for the crankshaft, the at least one block magnet and the crank magnet are aligned, wherein the at least one block magnet includes a first block magnet and a second block magnet.

2. The magnetic engine vibration isolator of claim 1 , wherein for the first circumferential position of the crankshaft about the axis of rotation for the crankshaft, the at least one block magnet and the crank magnet are radially aligned.

3. The magnetic engine vibration isolator of claim 1 , wherein for any circumferential position of the crankshaft about the axis of rotation, the at least one block magnet and the crank magnet are radially aligned.

4. The magnetic engine vibration isolator of claim 1 , wherein:
the at least one block magnet is arranged to be non-rotatably connected to the block; and,
the crank magnet is arranged to be non-rotatably connected to the crankshaft.

5. The magnetic engine vibration isolator of claim 1 , wherein:
the at least one block magnet is disposed 360 degrees about the axis of rotation; and,
the crank magnet is disposed 360 degrees about the axis of rotation.

6. The magnetic engine vibration isolator of claim 1 , wherein
the crank magnet is radially disposed between the first block magnet and the second block magnet.

7. The magnetic engine vibration isolator of claim 1 , wherein:
the first block magnet includes a first north pole;
the second block magnet is located radially outwardly of the first block magnet and includes a second north pole;
the first north pole is radially aligned with the second north pole; and,
the crank magnet is radially disposed between the first block magnet and the second block magnet.

8. The magnetic engine vibration isolator of claim 1 , wherein:
the first block magnet is arranged to be non-rotatably connected to the block; and,
the second block magnet:
is located radially outwardly of the first block magnet; and,
is arranged to be circumferentially displaceable, by an actuator, with respect to the first block magnet.

9. The magnetic engine vibration isolator of claim 8 , wherein the crank magnet is:
disposed between the first block magnet and the second block magnet; and,
arranged to be non-rotatably connected to the crankshaft.

10. The magnetic engine vibration isolator of claim 8 , wherein:
for a full throttle position of an accelerator for the internal combustion engine, the second block magnet is arranged to be rotated by the actuator to a first circumferential position with respect to the first block magnet; and,
for a first throttle position of the accelerator other than the full throttle position of the accelerator, the second block magnet is arranged to be rotated by the actuator to a second circumferential position, different from the first circumferential position, with respect to the first block magnet.

11. The magnetic engine vibration isolator of claim 1 , wherein:
the first block magnet is arranged to be disposed less than 360 degrees about the axis of rotation for the crankshaft; and,
the crank magnet is arranged to be:
non-rotatably connected to the crankshaft; and,
disposed less than 360 degrees about the axis of rotation.

12. The magnetic engine vibration isolator of claim 11 , wherein:
the first block magnet includes a south pole and a north pole;
the crank magnet includes a south pole and a north pole;
the south pole of the crank magnet is radially further from the axis of rotation than the north pole of the crank magnet; and,
the south pole of the first block magnet is radially closer to the axis of rotation than the north pole of the first block magnet.

13. The magnetic engine vibration isolator of claim 11 , wherein:
in a first circumferential position of the crank magnet with respect to the first block magnet, a line, in a radial direction orthogonal to the axis of rotation, passes through in sequence: the crank magnet; an air gap; and the first block magnet; and,
the first block magnet is arranged to be radially displaceable by an actuator to change an extent of the air gap.

14. A magnetic engine vibration isolator, comprising:
a first block magnet arranged to be:
connected to a block for an internal combustion engine; and,
extend about an axis of rotation for a crankshaft for the internal combustion engine;

a second block magnet arranged to be:
connected to the block; and,
extend about the axis of rotation; and,

a crank magnet:
arranged to be connected to the crankshaft; and,
disposed between the first block magnet and the second block magnet.

15. The magnetic engine vibration isolator of claim 14 , wherein at least respective portions of the first block magnet, the second block magnet, and the crank magnet are radially aligned.

16. The magnetic engine vibration isolator of claim 14 ,
wherein:
the first block magnet and the second block magnet are arranged to be non-rotatably connected to the block; and,
the crank magnet is arranged to be non-rotatably connected to the crankshaft; or,

wherein:
the first block magnet is arranged to be non-rotatably connected to the block;
the crank magnet is arranged to be non-rotatably connected to the crankshaft; and,
the second block magnet is arranged to be displaceable, by an actuator and in a circumferential direction, with respect to the first block magnet.

17. A magnetic engine vibration isolator, comprising:
a block magnet arranged to:
be displaceable by an actuator;
be non-rotatably connected to a block for an internal combustion engine; and,
extend less than 360 degrees, in a circumferential direction, about an axis of rotation for a crankshaft for the internal combustion engine; and,

a crank magnet arranged to:
be non-rotatably connected to the crankshaft; and,
extend less than 360 degrees, in the circumferential direction, about the axis of rotation.

18. The magnetic engine vibration isolator of claim 17 , wherein for a first circumferential position of the crankshaft, a line, orthogonal to the axis of rotation and not passing through the axis of rotation, passes through the crank magnet and the block magnet.

19. The magnetic engine vibration isolator of claim 17 , wherein:
in a first circumferential position of the crank magnet with respect to the block magnet, a line, in a radial direction orthogonal to the axis of rotation, passes through in sequence: the crank magnet; an air gap; and the block magnet; and,
the block magnet is arranged to be radially displaceable by the actuator to change an extent of the air gap in the radial direction.

Assignees

• Schaeffler Technologies Ag

Inventors

• Norwich Victor

Classifications

• F16F15/18 Primary

  using electric, {magnetic or electromagnetic} means ({suppression of vibrations of rotating systems by use of non-rotating magnetic or electromagnetic means F16F15/03;} dynamo-electric devices H02K; {control effected upon generator excitation circuit to reduce harmful effects of overloads or transients H02P9/10}) · CPC title

• F02D17/02 Primary

  Cutting-out (cutting-out engines in multiple engine arrangements F02D25/04) · CPC title

• F16F2222/06

  Magnetic or electromagnetic · CPC title

• F02D41/0087

  Selective cylinder activation, i.e. partial cylinder operation (deceleration cut-off F02D41/123) · CPC title

• F02D9/02

  concerning induction conduits (throttle valves, or arrangements thereof in conduits F02D9/08) · CPC title