Intelligent air compressor operation

• US 6,390,779 B1
• Filed: 07/22/1998
• Issued: 05/21/2002
• Est. Priority Date: 07/22/1998
• Status: Expired due to Term

• Current Assignee: Westinghouse Air Brake Technologies Corporation
• Original Assignee: Westinghouse Air Brake Technologies Corporation
• Inventors: Cunkelman, Brian L.
• Primary Examiner(s): Thorpe, Timothy S.
• Assistant Examiner(s): GRAY, MICHAEL KUHN
• Application Number:
  US09/120,701
• Time in Patent Office: 1,399 Days
• Field of Search: 417/18, 417/19, 417/22, 417/63, 417/153
• US Class Current: 417/14
• CPC Class Codes: F04B 25/00 Multi-stage pumps
• CPC Class Codes: F04B 25/005 with two cylinders
• CPC Class Codes: F04B 49/065 and making use of computers

Abstract

Apparatus for and method of monitoring the condition of an air compressor. The apparatus includes a plurality of appropriately located sensors for sensing operating parameters of the air compressor and for outputting signals indicative of the condition of each of the operating parameters. An information processor is connected to receive the output signals from the sensors and to communicate output control signals in response thereto. The control signals contain information that allows appropriate control and maintenance of the air compressor.

Claims

1. An apparatus for monitoring operating conditions of an air compressor disposed on a railway locomotive and powered by at least one of an electric motor and a locomotive engine, such air compressor having at least one low pressure cylinder for compressing and discharging air to at least one intercooler and at least one high pressure cylinder for receiving air from such intercooler and for compressing and discharging such air to an aftercooler from which such air is conveyed to a reservoir, said apparatus comprising:

(a) a predetermined plurality of sensors appropriately located for sensing operating parameters of such air compressor, and for generating output signals indicative of a condition of each of said operating parameters, said plurality of sensors including at least a pressure sensor for measuring pressure of such intercooler and such aftercooler discharge and at least a temperature sensor for measuring a temperature of such aftercooler discharge; and

(b) an information processor connected to receive said output signals from said predetermined plurality of said sensors and to communicate control signals as an output in response to receipt of said output signals from said predetermined plurality of said sensors, said control signals containing information that allows appropriate control and maintenance of such air compressor.

2. An apparatus, according to claim 1, wherein said information processor is a main computer located in a cab of a locomotive.

3. An apparatus, according to claim 1, wherein said information processor is a microprocessor located in a cab of a locomotive and dedicated to receiving said output signals from said sensors and operating in response thereto.

4. An apparatus, according of claim 1, wherein said microprocessor is a portable laptop microprocessor used to receive said output signals from said sensors.

5. An apparatus, according to claim 1, wherein said information processor includes an output section electrically connected to at least one contactor employed for supplying and interrupting electrical current to an electrical motor of such air compressor, with at least one of said control signals provided by said information processor being effective to open and close said contactor.

6. An apparatus, according to claim 1, wherein said information processor includes an output section electrically connected to a magnet valve for controlling both loading and unloading of such air compressor, with at least one of said control signals provided by said information processor being effective to operate said magnet valve.

7. An apparatus, according to claim 1, wherein said plurality of sensors includes a sensor for sensing a temperature of such air discharged from such air compressor into such aftercooler.

8. An apparatus, according to claim 1, wherein said plurality of sensors includes a sensor for sensing a temperature of such air input to such low pressure cylinder of such air compressor.

9. An apparatus, according to claim 1, wherein said plurality of sensors includes a sensor for sensing humidity of such air conveyed from such aftercooler to such reservoir.

10. An apparatus, according to claim 1, wherein said such air compressor includes a pair of low pressure cylinders and a pair of intercoolers, said plurality of sensors includes a sensor for sensing a temperature of such air between a second one of such pair of low pressure cylinders and a second one of such pair of intercoolers.

11. An apparatus, according to claim 1, wherein such air the compressor is driven by an electrical motor having windings for conducting electrical current, said plurality of sensors includes a sensor for sensing the operating temperature of such windings.

12. An apparatus, according to claim 1, wherein the plurality of sensors includes an accelerometer located in the air compressor for sensing the vibration of a vibrating component in the air compressor.

13. An apparatus, according to claim 1, wherein the air compressor contains a supply of oil for lubricating components in the compressor said plurality of sensors includes means for sensing the pressure of the supply of said oil.

14. An apparatus, according to claim 1, wherein said plurality of sensors includes means for sensing a level of oil in such air compressor.

15. An apparatus, according to claim 1, wherein an unloader line and a magnet valve interconnect such air compressor and such reservoir and said plurality of sensors includes a sensor for sensing pressure in such unloader line.

16. An apparatus, according to claim 1, wherein said plurality of sensors includes a sensor for sensing a pressure in such reservoir.

17. An apparatus, according to claim 1, wherein said plurality of sensors includes means for sensing an operating RPM of such air compressor.