System, kit, and method for locomotive exhaust gas recirculation cooling

• US 7,798,134 B2
• Filed: 05/07/2008
• Issued: 09/21/2010
• Est. Priority Date: 05/07/2008
• Status: Active Grant

• Current Assignee: GE Global Sourcing LLC (Westinghouse Air Brake Technologies Corporation)
• Original Assignee: General Electric Company
• Inventors: Marsh, Gregory Alan, Aggarwal, Mahesh Chand
• Primary Examiner(s): Gimie; Mahmoud
• Application Number:
  US12/116,775
• Publication Number:
  US 20090277429A1
• Time in Patent Office: 867 Days
• Field of Search: 123/568.12, 123/568.11, 701/108, 602/78, 602/80, 602/98, 606/051, 606/052, 165/103, 165/153, 165/158
• US Class Current: 123/568.12
• CPC Class Codes: B61C 5/04 Arrangement or disposition of exhaust apparatus
• CPC Class Codes: F02M 26/05 High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
• CPC Class Codes: F02M 26/19 Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
• CPC Class Codes: F02M 26/24 with two or more coolers

Abstract

A system, kit, and service method for exhaust gas recirculation cooling are described. In one example, a removable cooling system for an engine, the engine in a vehicle car body, the system comprising: a removable package including a first exhaust gas recirculation cooler, a second exhaust gas recirculation cooler, and a third exhaust gas recirculation cooler, the first, second, and third coolers coupled together in series, where the removable package is located at a top of the vehicle car body and where the removable package is removably coupled to the vehicle as a unit.

Claims

1. A removable cooling system for an engine, the engine in a vehicle car body, the system comprising:

a removable package including a first exhaust gas recirculation cooler, a second exhaust gas recirculation cooler, and a third exhaust gas recirculation cooler, the first, second, and third coolers coupled together in series, with an input of the third exhaust gas recirculation cooler in a downstream order of the series fluidly coupled only to an output of the second exhaust gas recirculation cooler in the downstream order in the series, where the removable package is located at a top of the vehicle car body and where the removable package is removably coupled to the vehicle as a unit.

2. The system of claim 1 where the first exhaust gas recirculation cooler includes a finned heat exchanger located at the top of the vehicle car body, and where the finned heat exchanger is positioned to receive airflow generated by car body motion, where the vehicle is a locomotive.

3. The system of claim 1 where the second exhaust gas recirculation cooler is positioned to receive airflow generated by fans, and where the second exhaust gas recirculation cooler is positioned in proximity to an air-air heat exchanger.

4. The system of claim 1 where the removable package is configured to be removably coupled by a first flexible connection to an exhaust gas recirculation supply of the engine.

5. The system of claim 4 where the removable package is configured to be removably coupled by a second flexible connection to an engine intake system.

6. The system of claim 1 where the first exhaust gas recirculation cooler is in a co-planar position with the second exhaust gas recirculation cooler, and where the third exhaust gas recirculation cooler is further in a co-planar position with the first and second exhaust gas recirculation coolers.

7. The system of claim 6 where the first exhaust gas recirculation cooler includes first and second separate portions positioned on either side of the second exhaust gas recirculation cooler and the third exhaust gas recirculation cooler.

8. The system of claim 7 wherein the third exhaust gas recirculation cooler is configured to transfer heat from exhaust gas to a liquid coolant, and where the system further includes a venturi pump.

9. A kit for an engine of a vehicle car body, comprising:

a first air-cooled exhaust gas recirculation cooler;

a second air-cooled exhaust gas recirculation cooler adapted to be fluidly coupled downstream of the first exhaust gas recirculation cooler; and

a third exhaust gas recirculation cooler having an input adapted to be fluidly coupled downstream of the second exhaust gas recirculation cooler and only to an output of the second exhaust gas recirculation cooler, and further adapted to be fluidly coupled to a liquid coolant engine cooling system.

10. The kit of claim 9 further comprising one or more hoist brackets configured to be coupled to a crane hook, where the vehicle is a locomotive.

11. The kit of claim 9 where the first exhaust gas recirculation cooler is a finned air-cooled cooler.

12. The kit of claim 10 where the first exhaust gas recirculation cooler is adapted to direct cooling air to an exterior of the locomotive car body, and where the cooling air is driven by car body motion.

13. The kit of claim 9 where the first, second, and third coolers are adapted to be coupled together in a co-planar configuration, and where the first cooler is divided into at least a first and second parallel portion.

14. A method of managing maintenance of a replaceable exhaust gas recirculation cooling system for a vehicle, comprising:

decoupling a first replaceable exhaust gas recirculation cooling system from the vehicle, the first replaceable exhaust gas recirculation cooling system including a first, second, and third exhaust gas recirculation cooler coupled together in series to form a unitary structure, the third exhaust gas recirculation cooler in a downstream order of the series having an input fluidly coupled only to an output of the second exhaust gas recirculation cooler;

lifting the first replaceable exhaust gas recirculation cooling system vertically out of the vehicle car body with a crane;

replacing the first replaceable exhaust gas recirculation cooling system with a fresh replaceable exhaust gas recirculation cooling system; and

coupling the fresh replaceable exhaust gas recirculation cooling system to the vehicle.

15. The method of claim 14 further comprising cleaning the first replaceable exhaust gas recirculation cooling system while it is removed from the vehicle, where the vehicle is a locomotive.

16. The method of claim 15, where the fresh replaceable exhaust gas recirculation cooling system is a second exhaust gas recirculation cooling system.

17. The method of claim 15, where the fresh replaceable exhaust gas recirculation cooling system includes the cleaned, first, replaceable exhaust gas recirculation cooling system.

18. The method of claim 14 where the decoupling occurs after a predetermined amount of usage of the first replaceable exhaust gas recirculation cooling system.