System and methods for testing an engine

• US 10,641,684 B2
• Filed: 08/13/2018
• Issued: 05/05/2020
• Est. Priority Date: 08/11/2017
• Status: Active Grant

• Current Assignee: Power Test LLC
• Original Assignee: Power Test, Inc. (Shermco Industries, Inc.)
• Inventors: Garcia, Victor
• Primary Examiner(s): Kirkland, III, Freddie
• Application Number:
  US16/102,660
• Publication Number:
  US 20190049340A1
• Time in Patent Office: 631 Days
• CPC Class Codes: G01M 15/044 by monitoring power, e.g. by operating the engine with one of the ignitions interrupted; by using acceleration tests

Abstract

A system for testing an engine, the engine including, a drive shaft, and a fluid circulation subsystem, the fluid circulation subsystem having at least one heat exchanger, and a fresh water pump (engine auxiliary water pump). The portable engine test tool can couple to the engine flywheel housing or output shaft of the transmission and can use the fresh water pump of an engine to provide water to an attached or integrated dynamometer and provide braking force to such. In some embodiments the portable engine testing system can use a fresh water supply reservoir.

Claims

1. A system for testing an engine, said engine including, a drive shaft, and a fluid circulation subsystem, said fluid circulation subsystem having at least one heat exchanger, and a fresh water pump comprising:

an engine interface, said engine interface configured to couple to the drive shaft of the engine;

a hydraulic dynamometer, the hydraulic dynamometer configured to couple to the engine interface, and configured to provide rotational resistance against the drive shaft via the engine interface, the hydraulic dynamometer including

at least one fluid supply port configured to receive a cooled fluid, and

at least one fluid exhaust port configured to exhaust a heated fluid;

a plumbing subsystem, said plumbing subsystem including

a dynamometer supply valve hydraulically coupled to the at least one fluid supply port of the dynamometer,

a hydraulic supply conduit configured to hydraulically couple to the dynamometer supply valve and to a fresh water supply,

a dynamometer return valve configured to hydraulically couple to the at least one fluid exhaust port of the dynamometer, and

a hydraulic return conduit configured to hydraulically couple to the dynamometer return valve and to a fresh water return;

wherein the plumbing subsystem further comprises a bypass circuit including;

a bypass valve configured to hydraulically couple to the hydraulic supply conduit and

to the hydraulic return conduit.

2. The system for testing an engine of claim 1, wherein the heat exchanger is configured to remove heat from engine coolant, the heat exchanger including

a coolant inlet, a coolant outlet, a fresh water inlet, and a fresh water outlet.

3. The system for testing an engine of claim 2, wherein the fresh water inlet is configured to hydraulically couple to and receive fluid from the fresh water pump.

4. The system for testing an engine of claim 2, wherein a fresh water outlet is configured to hydraulically couple to the hydraulic supply conduit.

5. The system for testing an engine of claim 2, wherein the heat exchanger comprises a tortuous path configured to receive fresh water and push said fresh water around internal tubes having said engine coolant.

6. The system for testing an engine of claim 1, wherein the dynamometer supply valve includes a T-fitting and is hydraulically coupled to more than one fluid supply port of the dynamometer.

7. The system for testing an engine of claim 1, wherein the hydraulic return conduit includes a one-way check valve.

8. The system for testing an engine of claim 1, wherein the hydraulic supply conduit includes a fluid shut-off valve.

9. The system for testing an engine of claim 1, wherein the dynamometer supply valve is configured to be flow adjustable.

10. The system for testing an engine of claim 1, wherein the bypass valve is configured to be flow adjustable.

11. A system for testing an engine, said engine including, a drive shaft, the system comprising:

a fluid circulation subsystem, said fluid circulation subsystem having a coolant reservoir, a coolant inlet, a coolant outlet, coolant pump;

an engine interface, said engine interface configured to couple to the drive shaft of the engine;

a hydraulic dynamometer, the hydraulic dynamometer configured to couple to the engine interface, and configured to provide rotational resistance against the drive shaft via the engine interface, the hydraulic dynamometer including

at least one fluid supply port configured to receive a cooled fluid, and

at least one fluid return port configured to return a heated fluid;

a plumbing subsystem, said plumbing subsystem including

a dynamometer supply valve hydraulically coupled to the at least one fluid supply port of the dynamometer,

a hydraulic supply conduit configured to hydraulically couple to the dynamometer supply valve and to a coolant supply,

a dynamometer return valve configured to hydraulically couple to the at least one fluid return port of the dynamometer,

a hydraulic return conduit configured to hydraulically couple to the dynamometer return valve and to a coolant return;

wherein said system for testing an engine is a stand-alone-system; and

wherein the plumbing subsystem further comprises a bypass circuit including;

a bypass valve configured to hydraulically couple to the hydraulic supply conduit and to the hydraulic return conduit.

12. The system for testing an engine of claim 11, wherein the plumbing subsystem further comprises a heat exchanger, said heat exchanger configured to remove heat from fluid, the heat exchanger including a heated fluid inlet, a cooled fluid outlet, and a cooling fan.

13. The system for testing an engine of claim 11, wherein the coolant reservoir is configured to be hydraulically coupled to the coolant pump and configured to be in fluid communication with the plumbing subsystem including the hydraulic return conduit, the dynamometer return valve, and the coolant return.

14. The system for testing an engine of claim 13, wherein the hydraulic return conduit is configured to hydraulically couple to the dynamometer return valve and the coolant return and is configured to return coolant to the coolant reservoir.

15. A system for testing an engine, said engine including, a drive shaft, and a fluid circulation subsystem, said fluid circulation subsystem having at least one heat exchanger, and a fresh water pump, the system for testing an engine comprising:

an engine interface, said engine interface configured to couple to the drive shaft of the engine;

a hydraulic dynamometer, the hydraulic dynamometer configured to couple to the engine interface, and configured to provide rotational resistance against the drive shaft via the engine interface, the hydraulic dynamometer including

at least one fluid supply port configured to receive a cooled fluid, and

at least one fluid exhaust port configured to exhaust a heated fluid;

a plumbing subsystem, said plumbing subsystem including

a dynamometer supply valve hydraulically coupled to the at least one fluid supply port of the dynamometer,

a hydraulic supply conduit configured to hydraulically couple to the dynamometer supply valve and to a fresh water supply,

a dynamometer return valve configured to hydraulically couple to the at least one fluid exhaust port of the dynamometer, and

a hydraulic return conduit configured to hydraulically couple to the dynamometer return valve and to a fresh water return; and

wherein the plumbing subsystem further comprises a bypass circuit including;

a bypass valve configured to hydraulically couple to the hydraulic supply conduit and to the hydraulic return conduit;

wherein the plumbing subsystem further comprises a heat exchanger, the heat exchanger is configured to remove heat from engine coolant, the heat exchanger including

a coolant inlet, a coolant outlet, a fresh water inlet, and a fresh water outlet;

wherein the fresh water inlet is configured to hydraulically couple to and receive fluid from the fresh water pump;

wherein the fresh water outlet is configured to hydraulically couple to the hydraulic supply conduit;

wherein the heat exchanger comprises a tortuous path configured to receive fresh water and push said fresh water around internal tubes having said engine coolant;

wherein the dynamometer supply valve includes a T-fitting and is hydraulically coupled to more than one fluid supply port of the dynamometer;

wherein the hydraulic return conduit includes a one-way check valve;

wherein the hydraulic supply conduit includes a fluid shut-off valve;

wherein the dynamometer supply valve is configured to be flow adjustable; and

wherein the bypass valve is configured to be flow adjustable.

16. The system for testing an engine of claim 15, further comprising a set of instructions;

and

wherein the system for testing an engine, said engine including, a drive shaft, and a fluid circulation subsystem, said fluid circulation subsystem having at least one heat exchanger, and a fresh water pump is arranged as a kit.