MECHADYNE PLC Patent applications |
Patent application number | Title | Published |
20130098319 | VALVE MECHANISM FOR AN INTERNAL COMBUSTION ENGINE - A valve mechanism is disclosed for a cylinder of an internal combustion engine which comprises two gas exchange poppet valves mounted in a cylinder head, a bridge | 04-25-2013 |
20130061824 | ASSEMBLY OF A VALVE OPERATING SYSTEM INCORPORATING A CAM SUMMATION MECHANISM - A method is disclosed for assembling a valve operating system for opening and closing a poppet valve mounted on an engine cylinder head. The valve operating system comprises a camshaft | 03-14-2013 |
20110017158 | Engine Valve System With Variable Lift and Duration - An improvement is disclosed for an engine valve system with variable lift and duration of the type that includes two cams mounted coaxially, a summation rocker coupled to cam followers in contact with both cams and movable in proportion to the instantaneous sum of the lifts of the respective cams, and a valve actuating rocker pivotably coupled to the summation rocker and serving to open an engine valve in dependence upon the movement of the summation rocker. In the invention, at least one of the couplings of the summation rocker with the cam followers and with the valve actuating rocker incorporates an adjustable eccentric which is rotatable to enable the clearance within the valve system to be set. | 01-27-2011 |
20100294222 | VARIABLE VALVE ACTUATING MECHANISM WITH LIFT DEACTIVATION - An internal combustion engine is described having a valve mechanism that comprises two cams ( | 11-25-2010 |
20100288229 | VALVE MECHANISM FOR AN ENGINE - An internal combustion engine has intake ( | 11-18-2010 |
20100282193 | Single Cam Phaser Camshaft - A camshaft assembly is disclosed which comprises an inner shaft ( | 11-11-2010 |
20100212616 | Camshaft Phasing System - An engine cylinder head | 08-26-2010 |
20100132644 | VARIABLE VALVE ACTUATING MECHANISM WITH SUMMATION CAM - A mechanism for actuating a poppet valve ( | 06-03-2010 |
20100132640 | CAMSHAFT ASSEMBLY - A camshaft assembly is disclosed which comprises an inner shaft, an outer tube surrounding and rotatable relative to the inner shaft, and two groups of cam lobes mounted on the outer tube, the first group of cam lobes being fast in rotation with the outer tube, the second group being rotatably mounted on the outer surface of the tube and connected for rotation with the inner shaft. The connection between the second group of cam lobes and the inner shaft is effected by means of driving members whose positions are adjustable in order to compensate for significant manufacturing inaccuracies between the inner shaft and its associated group of cam lobes. | 06-03-2010 |
20100050967 | CAMSHAFT AND PHASER ASSEMBLY - An assembly is provided comprising an SCP camshaft ( | 03-04-2010 |
20090293826 | VARIABLE PHASE MECHANISM - A variable phase mechanism is described which comprises a drive member rotatable about an axis, first and second driven members rotatable in synchronism with the drive member, an actuator for rotating the first driven member relative to the drive member to vary the phase of rotation of the first driven member relative to the drive member, and a yoke coupling the second driven member for rotation with one of the drive member and the first driven member and movable transversely relative to the axis of the drive member to vary the phase of rotation of the second driven member relative to the drive member. In the invention, transverse movement of the yoke is effected by means of interaction between the other of the drive member and the first driven member and a radially outwards facing surface defined by the yoke. | 12-03-2009 |
20090272349 | VANE-TYPE PHASER - A vane-type phaser connected to drive an assembled camshaft includes a drive member and a driven member each connected to a respective one of the inner and outer shafts of the camshaft. A first of the members includes a disc with at least one arcuate cavity that is open at both axial ends. The second member includes two closure plates sealing off the axial ends of each cavity of the first member and at least one vane formed separately from the closure plates which is movably received in a respective cavity to divide the cavity into two variable volume working chambers. Each vane is secured at both its axial ends to the two closure plates. | 11-05-2009 |
20090266320 | VALVE ACTUATING SYSTEM - An actuating system for a gas exchange valve of an internal combustion engine is described which comprises two cams ( | 10-29-2009 |
20090178634 | ENGINE WITH VARIABLE VALVE ACTUATING MECHANISM - An internal combustion engine is described having a valve mechanism that comprises an SCP camshaft operating two sets of valves. The first set of valves is operated via a summation rocker system such that the valve lift characteristic results from the combination of two cam profiles. The second set of valves has a valve lift characteristic that is different from that of the first set. In the invention, changing the valve lift characteristic of the first set of valves by varying the phase of the inner shaft of the SCP camshaft relative to the outer tube of the SCP camshaft serves additionally to alter the operation of the second set of valves. | 07-16-2009 |
20080257104 | Camshaft Assembly - The invention relates to a camshaft assembly comprising an inner shaft, an outer tube rotatable relative to the inner shaft, and two groups of cams mounted on the outer tube, the first group of cams being fast in rotation with the outer tube, and the second group being rotatably mounted on the outer surface of the tube and being connected for rotation with the inner shaft by means of connecting members that pass through circumferentially elongated slots in the outer tube. In the invention, the outer tube surrounds the inner shaft with clearance and the members connecting different ones of the cams of the second group to the inner shaft are inclined relative to one another and act to locate the axis of the inner shaft relative to the outer tube. | 10-23-2008 |
20080223321 | VARIABLE VALVE ACTUATION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - A valve system is disclosed for an internal combustion engine which allows a secondary valve event, serving for example to provide internal EGR, to be selectively disabled. The system comprises two valve | 09-18-2008 |
20080196681 | MOUNTING OF AN SCP CAMSHAFT ON AN ENGINE - A method disclosed for mounting a camshaft and a phaser on an engine, the camshaft being an SCP camshaft formed of concentric inner and outer rotary members each fast in rotation with a respective one of two groups of cams and the phaser enabling the phase of at least one of the rotary members of the camshaft to be varied dynamically relative to the phase of the engine crankshaft and the other rotary member. The method comprises first securing the phaser | 08-21-2008 |