Switch valve for controlling a hydraulic fluid flow and connecting rod with the switch valve

Patent metadata

Field	Value
Publication number	US-10330004-B2
Application number	US-201715402085-A
Country	US
Kind code	B2
Filing date	Jan 9, 2017
Priority date	Mar 14, 2016
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

A switch valve configured to control a hydraulic fluid flow, the switch valve including a capture element which is arranged in a valve housing and displaceable into a first switching position or a second switching position, wherein a first hydraulic connection is connected with a supply connection in the first switching position and a second hydraulic connection is connected with the supply connection in the second switching position, wherein at least two pass through bore holes are provided in the capture element and extend through the capture element, wherein a first pass through bore hole provides a fluid connection between the first hydraulic connection and the supply connection in the first switching position and a second pass through bore hole provides a fluid connection between the second hydraulic connection and the supply connection in the second switching position.

First claim

What is claimed is:

1. A switch valve configured to control a hydraulic fluid flow, the switch valve comprising:
a capture element which is arranged in a valve housing and displaceable into a first switching position or a second switching position,
wherein a first hydraulic connection is connected with a supply connection fed from a bearing in the first switching position and a second hydraulic connection is connected with the supply connection fed from the bearing in the second switching position,
wherein at least two pass through bore holes are provided in the capture element and extend through the capture element,
wherein each of the at least two pass through boreholes connects two openings in the capture element, and
wherein a first pass through bore hole of the at least two pass through bore holes provides a fluid connection between the first hydraulic connection and the supply connection in the first switching position and a second pass through bore hole of the at least two pass through bore holes provides a fluid connection between the second hydraulic connection and the supply connection in the second switching position.

2. The switch valve according to claim 1 ,
wherein the valve housing includes at least two outlet conduits and at least two connecting conduits, and
wherein a first outlet conduit of the at least two outlet conduits is connectable in the first switching position through the first pass through bore hole with a first connecting conduit of the at least two connecting conduits and a second outlet conduit of the at least two outlet conduits is connectable in the second switching position through the second pass through bore hole with a second connecting conduit of the at least two connecting conduits.

3. The switch valve according to claim 2 , wherein the valve housing includes sealing surfaces or seal elements so that the at least two connecting conduits are sealable when the valve housing is mounted at a connecting rod cover.

4. The switch valve according to claim 2 , wherein a respective throttling location is provided between the at least two connecting conduits and the capture element.

5. The switch valve according to claim 2 ,
wherein the at least two outlet conduits are sealed on one side by a respective seal element, and
wherein the at least two connecting conduits are sealed in an outward direction by the respective seal element when a fluid connection is established through the at least two pass through bore holes.

6. The switch valve according to claim 1 , wherein the at least two pass through bore holes are arranged axially offset in the capture element and diametrically extend through the capture element.

7. The switch valve according to claim 1 , wherein the valve housing is provided as an adapter configured to be arranged at a connecting rod cover of a connecting rod.

8. The switch valve according to claim 1 ,
wherein the capture element is interlockable by an interlocking connection in the first switching position or the second switching position, and
wherein a spring loaded interlocking element cooperates in the first switching position and in the second switching position with interlocking grooves configured in the capture element.

9. The switch valve according to claim 8 ,
wherein the interlocking element is configured as a ball which is loadable by a spring force from a spring, and
wherein the spring is at least partially supported in a recess of the connecting rod cover when the valve housing is mounted at the connecting rod cover.

10. The switch valve according to claim 1 , wherein the valve housing includes an axially defined groove in which a stop element of the capture element is arranged wherein the stop element limits a switching travel of the capture element.

11. The switch valve according to claim 1 , wherein the first hydraulic connection and the second hydraulic connection are at least partially formed by recesses which are configured to receive mounting bolts to mount the valve housing at a connecting rod.

12. A connecting rod for an internal combustion engine with variable compression, the connecting rod comprising:
an eccentrical element adjustment device for adjusting an effective piston rod length,
wherein an adjustment travel of the eccentrical element adjustment device is adjustable by the switch valve according to preceding claim 1 .

13. The connecting rod according to claim 12 ,
wherein the eccentrical element adjustment device includes at least one cylinder including a piston that is movably supported in a cylinder bore hole and connected with a support rod, and
wherein a respective inlet for feeding hydraulic fluid into the at least one cylinder and a respective outlet for draining the hydraulic fluid from the at least one cylinder is provided.

14. The connecting rod according to claim 12 ,
wherein the respective outlet of a first cylinder of the at least two cylinders is connected with a hydraulic fluid loop through the capture element in the first switching position, and
the respective outlet of a second cylinder of the at least two cylinders is connected with the hydraulic fluid loop through the capture element in the second switching position.

15. The connecting rod according to claim 12 ,
wherein a first groove hydraulically connecting the switch valve with the hydraulic fluid loop is provided at least in a portion of a circumference of a crank bearing eye in a portion of the connecting rod cover, or
a second groove supplying the respective inlet into the at least one cylinder with hydraulic fluid from the hydraulic fluid loop is provided in a portion of the connecting rod body.

16. The connecting rod according to claim 12 ,
wherein a first groove hydraulically connecting the switch valve with the hydraulic fluid loop is provided at least in a portion of a circumference of a crank bearing eye in a portion of the connecting rod cover, and

a second groove supplying the respective inlet into the at least one cylinder with hydraulic fluid from the hydraulic fluid loop is provided in a portion of the connecting rod body.

Assignees

• ECO Holding 1 GmbH

Inventors

• Mudra Alexander
• Schulze Dietmar

Classifications

• F16K11/0704

  comprising locking elements · CPC title

• F16K11/0716

  with fluid passages through the valve member (F16K11/0704, F16K11/0708, F16K11/0712 take precedence) · CPC title

• F15B15/02

  Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member · CPC title

• F02B75/045 Primary

  by means of a variable connecting rod length · CPC title

• F15B15/202

  Externally-operated valves mounted in or on the actuator · CPC title