Snow groomer

• US 8,800,700 B2
• Filed: 11/01/2011
• Issued: 08/12/2014
• Est. Priority Date: 11/05/2010
• Status: Active Grant

• Current Assignee: Kaessbohrer Gelaendefahrzeug AG
• Original Assignee: Kaessbohrer Gelaendefahrzeug AG
• Inventors: Kuhn, Michael, Mayer, Andreas, Luigart, Christof, Betz, Peter
• Primary Examiner(s): PEZZUTO, ROBERT ERIC
• Application Number:
  US13/286,262
• Publication Number:
  US 20120110878A1
• Time in Patent Office: 1,015 Days
• Field of Search: 37219-229, 180/65.245, 180/6.5, 180/65.265, 180/65.6, 180/6.7, 180/65.22, 180/9.23, 180/65.31, 180/6.44, 280/40.C, 244/60
• US Class Current: 180/65.245
• CPC Class Codes: B60K 17/12 of electric gearing of electrically-actuated clutches B60K17/02
• CPC Class Codes: B60K 6/26 characterised by the motors or the generators
• CPC Class Codes: B60K 6/34 characterised by the absence of energy storing means
• CPC Class Codes: B60K 6/46 Series type
• CPC Class Codes: B60L 2200/40 Working vehicles
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2220/14 Synchronous machines
• CPC Class Codes: B60L 2240/441 Speed
• CPC Class Codes: B60L 3/0061 relating to electrical machines
• CPC Class Codes: B60L 3/0092 with use of redundant elements for safety purposes
• CPC Class Codes: B60L 50/13 using AC generators and AC motors
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: B60L 7/20 Braking by supplying regenerated power to the prime mover of vehicles comprising engine-driven generators
• CPC Class Codes: B60W 10/30 including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
• CPC Class Codes: B60W 50/023 Avoiding failures by using redundant parts
• CPC Class Codes: B60Y 2200/25 Track vehicles
• CPC Class Codes: B60Y 2200/411 Bulldozers, Graders
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility

Abstract

Snow groomer for treating snow-covered surfaces, the snow groomer having an internal combustion engine and at least one generator connected via power electronics to at least one electric motor for a rotational functional drive of the snow groomer, wherein two generators are connected in parallel between the internal combustion engine and the power electronics.

Claims

1. A snow groomer comprising an internal combustion engine, and two generators connected via power electronics to at least two electric motors for rotational functional drives of the snow groomer, wherein the two generators are connected in parallel between the internal combustion engine and the power electronics, and wherein the at least two electric motors for rotational functional drives include at least one first electric motor for a chain drive and a second electric motor for at least one of a cutting shaft drive and a winch drive.

2. The snow groomer according to claim 1, further including a transfer transmission connected to the internal combustion engine, wherein the two generators are connected on an output side of the transfer transmission.

3. The snow groomer according to claim 1, wherein the at least two electric motors of the functional drive comprise a plurality of synchronous motors.

4. The snow groomer according to claim 1, wherein the power electronics comprise a direct current intermediate circuit.

5. The snow groomer according to claim 1, wherein the two generators comprise current rectifiers.

6. The snow groomer according to claim 1, wherein each of the two generators includes an electric switching element which can electrically disconnect a selected one of the two generators from the power electronics.

7. The snow groomer according to claim 6, further including an electronic controller that activates one of the switching elements as a function of functional monitoring of the two generators for disconnection of one of the generators from the power electronics.

8. The snow groomer according to claim 1, wherein the snow groomer includes only one internal combustion engine.

9. A snow groomer comprising:

an internal combustion engine;

two generators connected via power electronics to at least two electric motors; and

a plurality of rotational functional drives for the snow groomer;

each electric motor powering one of the rotational functional drives;

the two generators being connected in parallel between the internal combustion engine and the power electronics; and

the plurality of rotational functional drives including a chain drive and at least one of a cutting shaft drive and a winch drive.

10. The snow groomer according to claim 9, wherein the snow groomer includes only one internal combustion engine.