Brake cooling fluid diverter for an off-highway machine

• US 8,281,908 B2
• Filed: 08/29/2008
• Issued: 10/09/2012
• Est. Priority Date: 08/29/2008
• Status: Active Grant

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Hudson, Michael D., Lane, Cameron T., Tabor, Joseph E., Kabrick, Keith, Staub, Michael D., Brooks, Tom N., Tate, William J.
• Primary Examiner(s): Boehler, Anne Marie M
• Application Number:
  US12/201,906
• Publication Number:
  US 20100057270A1
• Time in Patent Office: 1,502 Days
• Field of Search: 701/48, 188/264.D, 188/264.E, 188/264.CC, 188/264.P, 188/71.6, 188/156, 188/264.R, 303/10
• US Class Current: 188/264.D
• CPC Class Codes: F16D 2065/783 cooling control or adjustment
• CPC Class Codes: F16D 65/78 Features relating to cooling
• CPC Class Codes: G05D 23/19 characterised by the use of electric means G05D23/1393 takes precedence

Abstract

The disclosure relates, in one aspect, to a friction brake cooling system for a machine. The cooling system includes at least one pump connected to at least one reservoir containing cooling fluid. A controller is configured to divert a cooling fluid flow through a valve to a first friction brake system and to a second friction brake system based on the use of the systems. In another aspect, the disclosure relates to a method of cooling a first friction brake system and a second friction brake system including diverting a flow of brake cooling fluid to the systems based on the use of the systems.

Claims

1. An off-road machine comprising:

an engine powering at least one pump in a first set of pumps and at least one pump in a second set of pumps;

a first friction brake system associated with a front set of wheels and a second friction brake system associated with a rear set of wheels;

a cooling fluid reservoir containing cooling fluid and connected to the first set of pumps and the second set of pumps;

a controller monitoring the first friction brake system and the second friction brake system;

a valve connecting the first set of pumps and the second set of pumps to the first friction brake system and the second friction brake system such that the valve can vary a cooling fluid flow to the first friction brake system and the second friction brake system in response to signals received from the controller.

2. The machine of claim 1 wherein the second set of pumps provides a flow of fluid to a hydraulic system associated with the machine.

3. The machine of claim 1 wherein the cooling fluid is hydraulic fluid used for at least one hydraulic system associated with the machine.

4. The machine of claim 1 further comprising a user input for determining whether the first friction brake system should be used.

5. The machine of claim 1 further comprising an electric retarding system configured to supply a retarding force to the rear set of wheels of the machine.

6. The machine of claim 1 wherein the controller further monitors a first cooling fluid temperature sensor associated with the front set of wheels and a second cooling fluid temperature sensor associated with the rear set of wheels wherein the controller adjusts a flow of the cooling fluid to at least one of the first friction brake system and the second friction brake system.