Fluid supply system

Patent metadata

Field	Value
Publication number	US-10487707-B2
Application number	US-201716098790-A
Country	US
Kind code	B2
Filing date	Apr 13, 2017
Priority date	May 3, 2016
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

A fluid supply system with a component includes a first bypass valve arranged in a control channel with a valve body adjustable at least between a first and a second position. The valve body separates the control channel into a first and a second space and has a leakage opening connecting the first space to the second space. The second space is connected to a fluid reservoir via a leakage channel, and a switchable valve is arranged in the leakage channel. A sensing device is configured to sense a property of the fluid and convey the property to a controlling device that is configured to close the valve to block the leakage channel when a predefined property is reached. A second bypass valve is configured to reduce a transient oscillation of the first bypass valve during a starting of the system.

First claim

The invention claimed is:

1. A fluid supply system with a component, the fluid supply system comprising:
a first bypass valve arranged in a control channel with a valve body adjustable at least between a first and a second position,
wherein the valve body separates the control channel into a first and a second space and has a leakage opening connecting the first space to the second space,
wherein the second space is connected to a fluid reservoir via a leakage channel,
a switchable valve arranged in the leakage channel and wherein the switchable valve is configured to at least partially open the leakage channel and at least partially close the leakage channel,
a sensing device configured to sense a property of the fluid and convey the property to a controlling device, wherein the controlling device is configured to close the valve to block the leakage channel when a predefined property is reached,
a second bypass valve configured to reduce a transient oscillation of the first bypass valve during a starting of the system,
wherein the second bypass valve is arranged in the leakage opening of the valve body,
wherein the second bypass valve has a spring-loaded valve body arranged in the leakage opening,
wherein the spring-loaded valve body is prestressed with a sealing element tightly against an edge of the leakage opening, and
wherein the spring-loaded valve body has a throttle opening smaller than the leakage opening.

2. The fluid supply system according to claim 1 , wherein the sensing device is configured as a temperature sensing device and the controlling device is configured to close the valve on reaching a temperature (T) of T>117° C.

3. The fluid supply system according to claim 1 , wherein the component is configured as one of a cooler, a gear, and a filter device.

4. The fluid supply system according to claim 1 , wherein the fluid supply system is configured as a lubricant supply system.

5. The fluid supply system according to claim 1 , wherein the fluid supply system has a fluid channel formed therein; and
wherein the fluid supply system has a bypass channel formed therein.

6. The fluid supply system according to claim 5 , wherein the valve body has a shell-side first opening formed therein; and
wherein the valve body has a shell-side second opening formed therein.

7. The fluid supply system according to claim 6 , wherein the shell-side first opening is aligned with the bypass channel when the valve body is positioned in the first position.

8. The fluid supply system according to claim 7 , wherein the shell-side first opening is configured to block passage of the fluid from the first space into the fluid channel when the valve body is positioned in the first position.

9. The fluid supply system according to claim 7 , wherein the shell-side second opening is aligned with the fluid channel when the valve body is positioned in the second position.

10. The fluid supply system according to claim 9 , wherein the shell-side second opening is configured to block passage of the fluid from the first space into the bypass channel when the valve body is positioned in the second position.

11. An internal combustion engine with a fluid supply system having a component, the fluid supply system comprising:
a first bypass valve arranged in a control channel with a valve body adjustable at least between a first and a second position,
wherein the valve body separates the control channel into a first and a second space and has a leakage opening connecting the first space to the second space,
wherein the second space is connected to a fluid reservoir via a leakage channel,
a switchable valve arranged in the leakage channel and wherein the switchable valve is configured to at least partially open the leakage channel and at least partially close the leakage channel,
a sensing device configured to sense a property of the fluid and convey the property to a controlling device, wherein the controlling device is configured to close the valve to block the leakage channel when a predefined property is reached,
a second bypass valve configured to reduce a transient oscillation of the first bypass valve during a starting of the system,
wherein the second bypass valve is arranged in the leakage opening of the valve body,
wherein the second bypass valve has a spring-loaded valve body arranged in the leakage opening,
wherein the spring-loaded valve body is prestressed with a sealing element tightly against an edge of the leakage opening, and
wherein the spring-loaded valve body has a throttle opening smaller than the leakage opening.

12. The fluid supply system according to claim 11 , wherein the sensing device is configured as a temperature sensing device and the controlling device is configured to close the valve on reaching a temperature (T) of T>117° C.

13. The fluid supply system according to claim 11 , wherein the component is configured as one of a cooler, a gear, and a filter device.

14. The fluid supply system according to claim 11 , wherein the fluid supply system is configured as a lubricant supply system.

15. The internal combustion engine according to claim 11 , wherein the fluid supply system has a fluid channel formed therein; and
wherein the fluid supply system has a bypass channel formed therein.

16. The internal combustion engine according to claim 15 , wherein the valve body has a first opening formed therein; and
wherein the valve body has a second opening formed therein.

17. The internal combustion engine according to claim 16 , wherein the first opening is aligned with the bypass channel when the valve body is positioned in the first position.

18. The internal combustion engine according to claim 17 , wherein the first opening is configured to block passage of the fluid from the first space into the fluid channel when the valve body is positioned in the first position.

19. The internal combustion engine according to claim 17 , wherein the second opening is aligned with the fluid channel when the valve body is positioned in the second position.

20. The internal combustion engine according to claim 19 , wherein the second opening is configured to block passage of the fluid from the first space into the bypass channel when the valve body is positioned in the second position.

Assignees

• Mahle Int Gmbh

Inventors

• Kiemlen Ralf
• Rutha Josef
• Schmiedl Kai-Torsten
• Steinhoff Michael

Classifications

• F01M2005/008

  Lubrication means facilitating engine starting · CPC title

• F01M11/03

  Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means (filters B01D) · CPC title

• F01M1/16

  Controlling lubricant pressure or quantity (rendering machines or engines inoperative or idling on lubricant pressure failure F01M1/22) · CPC title

• F01M1/10

  Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters · CPC title

• F16N2200/10

  Temperature · CPC title