Suppressor for gaseous fuel system

Patent metadata

Field	Value
Publication number	US-9593606-B2
Application number	US-201514877485-A
Country	US
Kind code	B2
Filing date	Oct 7, 2015
Priority date	Oct 7, 2014
Publication date	Mar 14, 2017
Grant date	Mar 14, 2017

Abstract

A suppressor for a gaseous fuel system is disclosed. The suppressor may include a cylindrical body having a first end opposite a second end along an axis. A vent opening may be disposed at the second end. A conduit may pass through the first end and may have an inlet disposed outside the cylindrical body and an outlet disposed inside the cylindrical body. The suppressor may include an acoustic core between the outlet of the conduit and the vent opening and configured to reduce a sound level of fluids exiting the conduit. The suppressor may include a thermal mass between the outlet of the conduit and the vent opening, wherein the thermal mass includes fluid channels and is configured to transfer heat energy to fluids exiting the conduit.

First claim

What is claimed is:

1. A suppressor for a gaseous fuel system comprising:
a cylindrical body having a first end opposite a second end along an axis;
a vent opening being disposed at the second end; and
a conduit passing through the first end and having an inlet disposed outside the cylindrical body and an outlet disposed inside the cylindrical body,
an acoustic core between the outlet of the conduit and the vent opening and configured to reduce a sound level of fluids exiting the conduit; and
a thermal mass between the outlet of the conduit and the vent opening, wherein the thermal mass includes fluid channels and is configured to transfer heat energy to fluids exiting the conduit.

2. The suppressor of claim 1 , further including a diffuser connected to the outlet of the conduit.

3. The suppressor of claim 2 , wherein the diffuser includes a perforated surface.

4. The suppressor of claim 3 , wherein a flow area of the perforated surface is about equal to 6.9 to 8.4 times an area of the outlet of the conduit.

5. The suppressor of claim 3 , wherein a diffuser length is about equal to 0.22 to 0.23 times a cylindrical body length.

6. The suppressor of claim 3 , wherein an area of the diffuser is about equal to 0.03 to 0.35 times an area of the vent opening.

7. The suppressor of claim 1 , wherein a length from the inlet of the conduit to the second end of the cylindrical body is about equal to 3.5 to 3.6 times a vent opening diameter.

8. The suppressor of claim 1 , wherein the vent opening is generally concentric with the axis of the cylindrical body and generally orthogonal to a flow direction through the conduit.

9. The suppressor of claim 8 , further including:
a domed face at the first end of the cylindrical body; and
a drain disposed in the domed face.

10. The suppressor of claim 7 , wherein the acoustic core further includes:
a sound-absorbing material; and
one or more acoustic structures configured to promote gas expansion, gas temperature increase, and sound attenuation.

11. A gaseous fuel system comprising:
a fuel tank;
an engine;
a fuel line fluidly connecting the fuel tank and the engine;
a ventilation line fluidly connecting the fuel line to the atmosphere; and
a suppressor fluidly connected to an end of the ventilation line, the suppressor comprising:
a cylindrical body having a first end opposite a second end along an axis;
a vent opening being disposed at the second end;
a conduit passing through the first end and having an inlet disposed outside the cylindrical body and an outlet disposed inside the cylindrical body,

an acoustic core between the outlet of the conduit and the vent opening and configured to reduce a sound level of fluids exiting the conduit; and
a thermal mass between the outlet of the conduit and the vent opening, wherein the thermal mass includes fluid channels and is configured to transfer heat energy to fluids exiting the conduit.

12. The gaseous fuel system of claim 11 , further including a diffuser connected to the outlet of the conduit.

13. The gaseous fuel system of claim 12 , wherein the diffuser includes a perforated surface.

14. The suppressor of claim 13 , wherein a flow area of the perforated surface is about equal to 6.9 to 8.4 times an area of the outlet of the conduit.

15. The gaseous fuel system of claim 13 , wherein diffuser length is about equal to 0.22 to 0.23 times a cylindrical body length.

16. The gaseous fuel system of claim 13 , wherein an area of the diffuser is about equal to 0.03 to 0.35 times an area of the vent opening.

17. The gaseous fuel system of claim 11 , wherein a length from the inlet of the conduit to the second end of the cylindrical body is about equal to 3.5 to 3.6 times a vent opening diameter.

18. The gaseous fuel system of claim 11 , wherein the vent opening is generally concentric with the axis of the cylindrical body and generally orthogonal to a flow direction through the conduit.

19. The gaseous fuel system of claim 18 , further including:
a domed face at the first end of the cylindrical body; and
a drain disposed in the domed face.

20. A suppressor for a gaseous fuel system comprising:
a cylindrical body having a first end opposite a second end along an axis;
a vent opening being disposed at the second end;
a conduit passing through the first end and having an inlet disposed outside the cylindrical body and an outlet disposed inside the cylindrical body;
a diffuser connected to the outlet of the conduit;
an acoustic core located downstream of the diffuser, the acoustic core including:
a sound-absorbing material;
one or more acoustic structures configured to promote gas expansion, gas temperature increase, and sound attenuation; and
a thermal mass between the outlet of the conduit and the vent opening, wherein the thermal mass includes fluid channels and is configured to transfer heat energy to fluids exiting the conduit.

Assignees

• Electro Motive Diesel Inc

Inventors

• Popadiuc Ovidiu Petru

Classifications

• F01N1/04

  having sound-absorbing materials in resonance chambers · CPC title

• F02M21/0287

  characterised by the transition from liquid to gaseous phase (F02M21/06 takes precedence); Injection in liquid phase; Cooling and low temperature storage · CPC title

• F02M21/0239

  Pressure or flow regulators therefor · CPC title

• F01N2490/155

  being disposed one after the other in flow direction · CPC title

• F01N1/006 Primary

  comprising at least one perforated tube extending from inlet to outlet of the silencer · CPC title