Oil controlled valve

Patent metadata

Field	Value
Publication number	US-10830364-B2
Application number	US-201615570811-A
Country	US
Kind code	B2
Filing date	Apr 28, 2016
Priority date	May 5, 2015
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

A valve body comprises an inner compartment extending along a longitudinal axis from a second end portion towards a first end portion. First, second, and third fluid ports in to the valve body are perpendicular to the longitudinal axis. The second fluid port is between the third and the first fluid port. A fourth fluid port is parallel to the longitudinal axis. A spool is configured to selectively reciprocate in the inner compartment. The spool comprises a first fluid receptacle configured to block fluid flow to the third fluid port and to fluidly communicate with the second fluid port when the spool adjoins the first end portion. The first fluid receptacle is configured to fluidly communicate with the second fluid port and with the third fluid port when the spool adjoins the second end portion. A second fluid receptacle is configured to receive fluid pressure from the fourth fluid port.

First claim

What is claimed is:

1. A valve arrangement comprising:
a valve body, the valve body comprising an axis, a first end portion, and a second end portion;
a regulation valve located at the first end portion of the valve body;
a solenoid valve located at the second end portion of the valve body;
a first fluid port in the valve body;
a second fluid port in the valve body;
a third fluid port located in the valve body;
a spool located inside the valve body between the regulation valve and the solenoid valve; and
an undercut in an exterior surface of the spool forming an opening between the spool and the valve body,
wherein the spool is configured to move axially along the axis of the valve body;
wherein the spool comprises a first end and a second end;
wherein the spool is configured to move between a first position adjoining the regulation valve and a second position adjoining the solenoid valve;
wherein the first end of the spool is located between the regulation valve and the solenoid valve along the axis;
wherein the second end of the spool is located between the first end of the spool and the solenoid valve along the axis;
wherein the third fluid port is in fluid communication with the first fluid port through the second fluid port when the spool is in the first position;
wherein the spool is configured so that fluid flows from the second fluid port to the first end of the spool through the third fluid port when the spool moves from the first position to the second position;
wherein the first fluid port is in fluid communication with the second fluid port when the spool is in the first position;
wherein the first fluid port is configured to fluidly communicate with the solenoid valve;
wherein the opening is configured so that fluid flows from the first fluid port to the first end portion of the spool through the opening when the spool is in the second position; and
wherein the opening is configured so that fluid flow through the opening to the first end portion is blocked when the spool is in the first position.

2. The valve arrangement of claim 1 , wherein the second fluid port is in fluid communication with an engine brake.

3. The valve arrangement of claim 1 , wherein the regulation valve is a check valve.

4. The valve arrangement of claim 1 , wherein the regulation valve is a ball valve.

5. The valve arrangement of claim 1 , comprising a first o-ring and a second o-ring, and further configured so that fluid flows from the second fluid port to the third fluid port in between the first o-ring and the second o-ring.

6. The valve arrangement of claim 1 , further configured so that fluid exits the solenoid valve when the spool is in the second position.

7. The valve arrangement of claim 1 , further configured so that fluid exits the regulation valve when the spool is in the second position.

8. The valve arrangement of claim 1 , wherein the spool is configured so that fluid flowing through the third fluid port prevents hydraulic lock as the spool moves from the first position to the second position.

9. The valve arrangement of claim 1 , wherein the spool is configured with a pass-through so that fluid flows through the third fluid port to move the spool toward the solenoid valve as the spool moves from the first position to the second position.

10. The valve arrangement of claim 1 , wherein the regulation valve is configured to maintain a pressure less than the pressure of the fluid flowing through the second fluid port.

11. The valve arrangement of claim 1 , further comprising:
a housing; and
a fluid pathway between the housing and the valve body,
wherein, when the spool is in the second position, the second fluid port fluidly communicates with the third fluid port through the fluid pathway between the valve body and the housing; and
wherein, when the spool is in the second position, fluid flows from the second fluid port to the first end of the spool through the third fluid port.

12. A valve comprising:
an axially extending valve body comprising:
a first end portion and a second end portion;
an inner compartment extending through the valve body from the second end portion towards the first end portion;
a first fluid port into the valve body;
a first fluid pathway connecting the second end portion to the inner compartment;
a second fluid port into the inner compartment, the second fluid port spaced from the first fluid port;
a third fluid port in the inner compartment, the third fluid port spaced from the second fluid port, and the second fluid port is between the third fluid port and the first fluid port; and
a second fluid pathway connecting the first end portion to the inner compartment;

a spool in the inner compartment, the spool configured to selectively reciprocate in the inner compartment between a position adjoining the first end portion to a position adjoining the second end portion, the spool comprising:
a first fluid receptacle connected to a second fluid receptacle, the first fluid receptacle comprising:
a pass-through configured to fluidly communicate with the second fluid port when the spool adjoins the second end portion, and to be blocked by the valve body when the spool adjoins the first end portion; and
a lip spaced from the pass-through, the lip configured to selectively block the third fluid port when the spool adjoins the first end portion; and

the second fluid receptacle configured to receive fluid pressure from the first fluid pathway.

13. The valve of claim 12 , further comprising a regulation valve in the first end portion, wherein the lip selectively abuts the regulation valve to block fluid flow to the third fluid port.

14. The valve of claim 13 wherein the first fluid receptacle comprises an outer undercut, and when the spool is adjacent the second end portion, the undercut fluidly connects the first port to the regulation valve through the pass-through.

15. The valve of claim 13 , further comprising a spring, wherein the first receptacle comprises an inner recess, and wherein the spring is biased between the inner recess and the regulation valve.

16. The valve of claim 12 , further comprising a solenoid valve configured to selectively fluidly connect the first fluid pathway to the first fluid port.

17. The valve of claim 12 , wherein the first fluid receptacle is connected to the second fluid receptacle by an arm.

18. The valve of claim 12 , wherein the first receptacle comprises an outer undercut, and when the spool is adjacent the second end portion, the undercut fluidly connects the third port to the first port through the second port.

19. A valve assembly comprising:
a valve body extending along a longitudinal axis, the valve body comprising:
a first end portion and a second end portion;
an inner compartment extending through the valve body from the second end portion towards the first end portion;
a first fluid port into the valve body, the first fluid port perpendicular to the longitudinal axis;
a second fluid port into the inner compartment, the second fluid port spaced from the first fluid port, the second fluid port perpendicular to the longitudinal axis;
a third fluid port into the inner compartment, the third fluid port spaced from the second fluid port, the third fluid port perpendicular to the longitudinal axis, and the second fluid port is between the third fluid port and the first fluid port; and
a fourth fluid port parallel to the longitudinal axis, the fourth fluid port fluidly connecting the second end portion to the inner compartment

Assignees

• Eaton Corp
• Eaton Intelligent Power Ltd

Inventors

• Kanda Robert John
• Coulter Todd K
• Bamber Daniel William

Classifications

• F15B2211/55

  for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief valve · CPC title

• F15B13/0431 Primary

  the electrical control resulting in an on-off function · CPC title

• F16K31/124

  servo actuated · CPC title

• F15B13/024

  Pressure relief valves · CPC title

• F15B2013/041

  with two positions · CPC title