Invention Grant
- Patent Title: Switch valve for controlling a hydraulic fluid flow for a connecting rod of variable compression internal combustion engine and connecting rod
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Application No.: US16016923Application Date: 2018-06-25
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Publication No.: US10598088B2Publication Date: 2020-03-24
- Inventor: Alexander Mudra , Wolfgang Rupp
- Applicant: ECO Holding 1 GmbH
- Applicant Address: DE Marktheidenfeld
- Assignee: ECO Holding 1 GmbH
- Current Assignee: ECO Holding 1 GmbH
- Current Assignee Address: DE Marktheidenfeld
- Agency: Von Rohrscheidt Patents
- Priority: DE102017114263 20170627; DE102018107076 20180326
- Main IPC: F02B75/04
- IPC: F02B75/04 ; F16K31/36 ; F16K31/363 ; F16K11/07 ; F15B15/20

Abstract:
A switch valve for controlling a hydraulic fluid flow of a connecting rod for an internal combustion engine with variable compression with an eccentrical element adjustment arrangement for adjusting an effective connecting rod length, the eccentrical element adjustment arrangement including a first cylinder including a first hydraulic chamber; a second cylinder including a second hydraulic chamber, wherein the first cylinder includes a first inlet for feeding hydraulic fluid into the first cylinder from a supply and the second cylinder includes a second inlet for feeding hydraulic fluid into the second cylinder from the supply, wherein the first cylinder includes a first drain for draining the hydraulic fluid from the first cylinder and the second cylinder includes a second drain for draining the hydraulic fluid from the second cylinder, wherein the switch valve includes a step piston which is displaceable into a first switching position or a second switching position.
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