Dump truck or truck

• US 9,718,345 B2
• Filed: 06/04/2015
• Issued: 08/01/2017
• Est. Priority Date: 06/05/2014
• Status: Active Grant

• Current Assignee: Liebherr-Mining Equipment Colmar SAS (Liebherr-International AG)
• Original Assignee: Liebherr-Mining Equipment Colmar SAS (Liebherr-International AG)
• Inventors: Hoffmann, Sebastien Nicolas, Kugelstadt, Kai, Richthammer, Burkhard, Graner, Klaus
• Primary Examiner(s): Walters, John
• Assistant Examiner(s): TRIGGS, JAMES J
• Application Number:
  US14/730,516
• Publication Number:
  US 20150352944A1
• Time in Patent Office: 789 Days
• CPC Class Codes: B60K 11/04 Arrangement or mounting of radiators, radiator shutters, or radiator blinds B60K11/085 takes precedence
• CPC Class Codes: B60K 11/06 with air cooling
• CPC Class Codes: B60K 6/20 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
• CPC Class Codes: B60K 6/46 Series type
• CPC Class Codes: B60P 1/04 with a tipping movement of load-transporting element dredgers or soil-shifting machines E02F3/00
• CPC Class Codes: B60Y 2200/142 Heavy duty trucks
• CPC Class Codes: F01P 1/06 Arrangements for cooling other engine or machine parts
• CPC Class Codes: F01P 2001/005 Cooling engine rooms
• CPC Class Codes: F01P 2005/025 using two or more air pumps
• CPC Class Codes: F01P 5/04 Pump-driving arrangements
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y10S 903/904 Component specially adapted for hev

Abstract

The present disclosure relates to a dump truck or to a truck, comprising a diesel electric traction drive and a cooling system, wherein two radiator fans and/or cooler blowers of the cooling system are hydraulically driven.

Claims

1. A dump truck or truck comprising:

a diesel electric traction drive and a cooling system, wherein the cooling system includes a radiator blower that has two radiator fans which are radial fans or cooling blowers, each driven via a hydraulic motor, and wherein the hydraulic motors are operable for driving the radiator fans or the cooling blowers at a fixed or variable speed, and wherein required hydraulic energy is provided by one or more hydraulic pumps which are driven via at least one transfer case at an internal combustion engine or at a generator.

2. The dump truck or truck in accordance with claim 1, wherein generated electricity of the diesel electric traction drive serves only for a feed of traction drive motors.

3. The dump truck or truck in accordance with claim 1, wherein a speed of the hydraulic motors of the radiator fans or the cooling blowers is set variably independently of a speed of the internal combustion engine.

4. The dump truck or truck in accordance with claim 1, wherein the radiator fans or the cooling blowers convey air via air guidance passages to electric motors of a driven vehicle axle.

5. The dump truck or truck in accordance with claim 4, wherein the radiator fans or the cooling blowers convey air via air guidance passages to one or more planetary gears of the driven vehicle axle.

6. The dump truck or truck in accordance with claim 4, wherein the radiator fans or the cooling blowers convey air via air guidance passages to one or more components of power electronics, including frequency inverters.

7. The dump truck or truck in accordance with claim 4, wherein the radiator fans or the cooling blowers convey air via air guidance passages to a generator of the diesel electric traction drive.

8. The dump truck or truck in accordance with claim 1, wherein the radiator fans are arranged, viewed in a direction of travel, behind an upper deck of a work machine or above or on a generator of the diesel electric traction drive.

9. The dump truck or truck in accordance with claim 1, wherein the radiator fans are arranged, viewed in a direction of travel, behind an upper deck of a work machine and above or on a generator of the diesel electric traction drive.

10. A method of operating a truck comprising:

operating a diesel electric traction drive and a cooling system of the truck, including driving wheels of the truck via traction drives, wherein the cooling system includes a radiator blower that has two radiator fans which are radial fans or cooling blowers, each driven via a hydraulic motor, where no components of the cooling system are driven electrically via electrical power generated by the traction drives, and wherein the hydraulic motors drive the radiator fans or the cooling blowers at a fixed or variable speed, adjusting the hydraulic motors at speeds different from a speed of an internal combustion engine, and

wherein the radiator fans or the cooling blowers convey air via air guidance passages to electric motors of a driven vehicle axle during vehicle operation while traction motors drive the wheels of the truck to propel the truck along a path.

11. The method of claim 10, wherein generated electricity of the diesel electric traction drive serves only for a feed of traction drive motors, and wherein required hydraulic energy for the cooling system is provided by one or more hydraulic pumps which are driven via at least one transfer case at a diesel engine or at a generator.

12. The method of claim 10, wherein the radiator fans or the cooling blowers convey air via air guidance passages to one or more planetary gears of the driven vehicle axle.

13. The method of claim 12, wherein the radiator fans or the cooling blowers convey air via air guidance passages to one or more components of power electronics, including frequency inverters.

14. The method of claim 10, wherein the radiator fans or the cooling blowers convey air via air guidance passages to a generator of the diesel electric traction drive.

15. The method of claim 10, wherein the radiator fans are arranged, viewed in a direction of travel, behind an upper deck of a work machine or above or on a generator of the diesel electric traction drive.

16. The method of claim 10, wherein the radiator fans are arranged, viewed in a direction of travel, behind an upper deck of a work machine and above or on a generator of the diesel electric traction drive.