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Freevalve Ab patents


Recent patent applications related to Freevalve Ab. Freevalve Ab is listed as an Agent/Assignee. Note: Freevalve Ab may have other listings under different names/spellings. We're not affiliated with Freevalve Ab, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "F" | Freevalve Ab-related inventors


Multi-way valve as well as actuator comprising such a multi-way valve

Disclosed is a multi-way valve including a control pressure channel, a first control fluid channel between a first opening and the control pressure channel, a second control fluid channel between a second opening and the control pressure channel, a valve body in the first and second control fluid channels, and an electrically controlled device having a drive member and an armature. The armature moves axially according to the drive member between inactive and active positions. ... Freevalve Ab

Actuator for axial displacement of an object

Disclosed is an actuator including a cylinder volume having a first portion, and an actuator piston disc displaceable in the cylinder between inactive and active positions, an inlet channel between a pressure fluid inlet and the first portion of the cylinder volume, a first inlet valve body in the inlet channel, an outlet channel between the first portion of the cylinder volume and a pressure fluid outlet, and an outlet valve body in the outlet channel. The slave piston is displaceable in a bore between inactive and active positions. ... Freevalve Ab

Pneumatic actuator for an engine valve

Disclosed is an actuator for axial displacement of an object, including a cylinder volume having a first portion, and an actuator piston disc displaceable in the axial direction in the cylinder volume between inactive and active positions, an inlet channel between a pressure fluid inlet and the first portion of the cylinder volume, a first inlet valve body in the inlet channel, an outlet channel between the first portion of the cylinder volume and a pressure fluid outlet, and an outlet valve body in the outlet channel. The slave piston is displaceable in a bore, the slave piston displacing the first inlet valve body to an active position, and interacting with an opening connecting the bore and a control pressure channel, the opening having a first flow area with the slave piston in its inactive position and a larger second flow area with the slave piston in its active position.. ... Freevalve Ab

Combustion engine as well as method for engine braking using such a combustion engine

Disclosed is a combustion engine and method for engine braking therein including an intake air channel having a first pressure, a first inlet valve between the intake air channel and the cylinder volume, an exhaust air channel having a second pressure, a first outlet valve between the cylinder volume and the exhaust air channel, and a storage reservoir having a third pressure higher than the first and second pressures, the storage reservoir being arranged in controllable fluid communication with the cylinder volume. The method takes place during two-stroke cycle and includes: displacing the piston from upper dead centre (udc) towards lower dead centre (ldc), keeping the first inlet valve open during at least part of the travel from udc to ldc, displacing the piston from ldc towards udc, and keeping the fluid communication between the storage reservoir and cylinder volume open during at least a part of such travel.. ... Freevalve Ab

Combustion engine with pneumatic valve return spring

A combustion engine includes an engine valve arranged to selectively open/close a combustion chamber of the engine, a cylinder head adjacent the combustion chamber, arranged to guide a valve stem of the engine valve, the engine valve being axially displaceable relative to the cylinder head between the combustion chamber closed position and the combustion chamber fully opened position, and a valve spring retainer connected to the valve stem. The valve spring retainer partly delimits a gas spring volume, which is in fluid communication with an adjacent gas volume via a port when the engine valve is in the combustion chamber closed position, and which is separated from the adjacent gas volume when the engine valve is in the combustion chamber fully open position, the port being open during at least 25% of the maximal stroke of the engine valve and being closed due to a displacement of the engine valve.. ... Freevalve Ab








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