Alternator with front end accessory drive

Patent metadata

Field	Value
Publication number	US-10186939-B2
Application number	US-201615057447-A
Country	US
Kind code	B2
Filing date	Mar 1, 2016
Priority date	Mar 1, 2016
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

Alternator/starters and methods for providing electrical power to a vehicle and rotating an engine are disclosed. In one example, the alternator/starter provides a differential action whereby torque on an input side of the alternator may be maintained while speed of an output side of the alternator may be varied. The alternator/starter includes two armature windings and two field windings.

First claim

The invention claimed is:

1. An electrical machine, comprising:
a housing;
a first field winding within the housing;
a first armature winding;
a second field winding, the first field winding and the first armature winding at least partially wrapped by the second field winding; and
a second armature winding, the first field winding and the first armature winding at least partially wrapped by the second armature winding.

2. The electrical machine of claim 1 , where the first field winding, the second field winding, the first armature winding, and the second armature winding are at least partially enclosed by the housing.

3. The electrical machine of claim 1 , further comprising a first field winding support, a second field winding support, a first armature winding support, and a second armature winding support.

4. The electrical machine of claim 3 , where the first field winding support holds the first field winding, where the second field winding support holds the second field winding, where the first armature winding support holds the first armature winding, and where the second armature winding support holds the second armature winding.

5. The electrical machine of claim 4 , further comprising two bearings supporting a shaft, the first armature winding coupled to the shaft.

6. The electrical machine of claim 4 , further comprising two bearings supporting the second field winding support.

7. The electrical machine of claim 6 , further comprising two bearings supporting the first field winding support.

8. An electrical machine, comprising:
a housing;
a first field winding supported via a first field winding support in the housing;
a first armature winding;
a second field winding;
a second armature winding, the second armature winding supported via a second armature winding support, the second armature winding support mechanically coupled to the first field winding support, the second armature winding at least partially wrapped by the second field winding.

9. The electrical machine of claim 8 , where the first field winding, the first armature winding, the second field winding, and the second armature winding are held within the housing.

10. The electrical machine of claim 8 , further comprising a first armature winding support and a second field winding support.

11. The electrical machine of claim 10 , further comprising two bearings supporting the first field winding support and two bearings supporting the second field winding support within the housing.

12. The electrical machine of claim 8 , further comprising a shaft and three bearings supporting the first armature winding support and the second armature winding support.

13. The electrical machine of claim 7 , further comprising a first belt coupling the electrical machine to an engine crankshaft and a second belt coupling the electrical machine to a mechanically driven ancillary device.

14. The electrical machine of claim 8 , further comprising a controller including executable instructions stored in non-transitory memory to adjust a field current of the electrical machine based on a speed of a load that is mechanically driven via the electric machine.

15. An electrical machine, comprising:
a housing;
a first field winding within the housing;
a first armature winding;
a second field winding; and
a second armature winding, the first armature winding and the second armature winding supported via a sole armature winding support.

16. The electrical machine of claim 15 , where the first field winding and the second field winding wrap at least a portion of the sole armature winding support.

17. The electrical machine of claim 15 , where the sole armature winding support is supported within the housing via a shaft and only two bearings.

18. The electrical machine of claim 15 , further comprising a first field winding support that supports the first field winding and a second field winding support that supports the second field winding.

19. The electrical machine of claim 18 , where the first field winding support is mechanically coupled to a shaft of an engine and where the second field winding support is mechanically coupled to a mechanically driven accessory.

20. The electrical machine of claim 19 , further comprising four bearings supporting the first field winding support and the second field winding support.

Assignees

• Ford Global Tech Llc

Inventors

• Elie Larry Dean

Classifications

• H02K51/00 Primary

  Dynamo-electric gears, i.e. dynamo-electric means for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts · CPC title

• H02K7/1815

  structurally associated with reciprocating piston engines (general aspects of generating sets, e.g. housing, F02B63/04) · CPC title

• H02K16/00 Primary

  Machines with more than one rotor or stator {(machines for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts H02K51/00; permanent magnet machines with multiple rotors or stators relatively rotated for vectorially combining the excitation fields or the armature voltages H02K21/029)} · CPC title

• H02K3/28 Primary

  Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32) · CPC title

• H02K2203/12

  Machines characterised by the bobbins for supporting the windings · CPC title