LUBRICANT SUPPLY SYSTEM AND METHOD FOR CONTROLLING GEARBOX LUBRICATION
First Claim
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1. A lubricant supply system, comprising:
- a lubricant flow circuit comprising, in fluid flow sequence;
a variable flow rate first pump;
a lubricant cooler; and
a gearbox;
a first temperature sensor for sensing a temperature of lubricant circulating within the lubricant flow circuit;
a pressure sensor for sensing a pressure of lubricant circulating within the lubricant flow circuit; and
a controller configured to be operably connected to the pressure and temperature sensors and to the first pump, the controller operable to control flow of the first pump in response to the sensed temperature and to the sensed pressure.
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Abstract
A lubricant supply system for a gearbox includes a lubricant flow circuit having, in fluid flow sequence: a variable-flow rate first pump; an lubricant cooler; and a gearbox. The system also includes: a first temperature sensor for sensing a temperature of lubricant circulating within the lubricant flow circuit; a pressure sensor for sensing a pressure of lubricant circulating within the lubricant flow circuit; and a controller operably connected to the pressure and temperature sensors and to the first pump. The controller is operable to control flow of the pump in response to the sensed temperature and to the sensed pressure.
50 Citations
19 Claims
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1. A lubricant supply system, comprising:
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a lubricant flow circuit comprising, in fluid flow sequence; a variable flow rate first pump; a lubricant cooler; and a gearbox; a first temperature sensor for sensing a temperature of lubricant circulating within the lubricant flow circuit; a pressure sensor for sensing a pressure of lubricant circulating within the lubricant flow circuit; and a controller configured to be operably connected to the pressure and temperature sensors and to the first pump, the controller operable to control flow of the first pump in response to the sensed temperature and to the sensed pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for controlling gearbox lubrication, comprising:
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circulating lubricant at a flow rate through a lubricant flow circuit comprising a variable flow rate first pump, a lubricant cooler, and a gearbox; sensing a first temperature of the lubricant, and varying the flow rate with reference to a lubricant temperature setpoint; and sensing a pressure of the lubricant, and varying the flow rate with reference to a lubricant pressure setpoint. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification