| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 123188800 | Valve seat relation | 13 |
| 20080230031 | DUAL INTAKE VALVE ASSEMBLY FOR INTERNAL COMBUSTION ENGINE - An intake valve assembly of an internal combustion engine that includes a combustion chamber and an intake passage. The intake valve assembly comprises a primary valve provided to seal against a primary valve seat formed in an intake port, a secondary valve mounted about the primary valve coaxially therewith and provided to seal against a secondary valve seat formed in the intake port, and a secondary valve lifter fixed to the primary valve so as to be axially spaced from the secondary valve when both the primary and secondary valves are in closed positions. The secondary valve is operated mechanically by the secondary valve lifter and fluidly in response to pressure differential between the intake passage and the combustion chamber. | 09-25-2008 |
| 20080251044 | Electronically actuated valve system - An electronically actuated valve assembly for an internal combustion engine is disclosed, wherein the valve assembly comprises a valve stem, a shape memory alloy actuator in operative communication with the valve stem, a coolant passage through which at least a portion of the shape memory alloy actuator extends, and a cooling fluid source in communication with the coolant passage. | 10-16-2008 |
| 20100108013 | Gasoline Direct Injection Engine - A gasoline direct injection engine may include: a piston; a combustion chamber interposed between a piston head and a cylinder; an ignition plug disposed at the top of the combustion chamber; at least one intake manifold disposed at an upper wall of the combustion chamber so that it is not interfered with by the ignition plug, and guiding intake air into the combustion chamber; an intake port disposed at an end of the intake manifold; an intake valve opening and closing the intake port; and an injector interposed between the intake port and another intake port below the intake port and injecting fuel into the combustion chamber. | 05-06-2010 |
| 20100180852 | INTERNAL COMBUSTION ENGINE - The invention relates to an internal combustion engine ( | 07-22-2010 |
| 20100224160 | ENGINE ASSEMBLY WITH VALVE SEAT VENT PASSAGES AND METHOD OF FORMING - An engine assembly may include an engine block defining a cylinder bore, a cylinder head fixed to the engine block, and a valve seat insert. The cylinder head may include an intake port, defining an inlet in fluid communication with an air source and an outlet in fluid communication with the cylinder bore. The valve seat may be defined at the outlet of the intake port and may include a stepped region. The stepped region may define a seating surface extending radially outward from the intake port. The seating surface may include a series of protrusions circumferentially spaced from one another around the outlet and forming a series of recesses therebetween. The valve seat insert may be located within the stepped region and may include a first axial end surface abutting the protrusions on the seating surface. | 09-09-2010 |
| 20110023808 | IRON-BASED SINTERED ALLOY FOR VALVE SEAT, AND VALVE SEAT FOR INTERNAL COMBUSTION ENGINE - It is an object of the present invention to provide a valve seat product in which the amount of hard particles added to improve the wear resistance of a valve seat of an internal combustion engine is increased, and is excellent in the mechanical strength and machinability. In order to achieve the object, an iron-based sintered alloy material for a valve seat is employed which is made to contain a first hard particle having an average primary particle diameter of 5 to 20 μm and a second hard particle having an average primary particle diameter of 20 to 150 μm in a texture, wherein a particle size distribution curve measured by laser diffraction scattering analysis has N peaks (N is an integer equal to or larger than 2) and when particle diameters corresponding to the peak top positions are denoted as D | 02-03-2011 |
| 20130032115 | VALVE FOR CONTROLLING A GAS FLOW, LIQUID SEPARATOR, VENTILATION SYSTEM AND INTERNAL COMBUSTION ENGINE COMPRISING SUCH A VALVE - The invention relates to a valve for controlling a gas flow, as it is used, for example, for controlling the gas flow between a crankcase and an intake tract of an internal combustion engine. The invention further relates to a liquid separator and to a ventilation system for the above-mentioned exemplary use for a crankcase and to an internal combustion engine. | 02-07-2013 |
| 20140076260 | CORROSION AND WEAR RESISTANT IRON BASED ALLOY USEFUL FOR INTERNAL COMBUSTION ENGINE VALVE SEAT INSERTS AND METHOD OF MAKING AND USE THEREOF - An iron-based corrosion resistant and wear resistant alloy includes (in weight percentage) carbon from about 1.6 to 3%, silicon from about 0.8 to 2.1%, manganese up to 1.0%, chromium from about 12.0 to 15.0%, molybdenum from about 2.0 to 4.0%, nickel from about 0.2 to 0.8%, copper up to 4.0%, boron up to 0.5%, and the balance including iron and incidental impurities. The alloy is suitable for use in elevated temperature applications such as in valve seat inserts for combustion engines. | 03-20-2014 |
| 20140190441 | VALVE SEAT INSERT - Embodiments may provide a valve seat insert including a valve seat face. A circumferential contact surface for contacting a cylinder head may be located radially outside and at least partially axially offset from the valve seat face. A discontinuity may be located radially between the valve seat face and the cylinder head and at least partially axially aligned with the valve seat face. | 07-10-2014 |
| 20150034037 | IRON-BASED ALLOYS AND METHODS OF MAKING AND USE THEREOF - An iron-based alloy includes, in weight percent, carbon from about 2 to about 3 percent; manganese from about 0.1 to about 0.4 percent; silicon from about 0.3 to about 0.8 percent; chromium from about 11.5 to about 14.5 percent; nickel from about 0.05 to about 0.6 percent; vanadium from about 0.8 to about 2.2 percent; molybdenum from about 4 to about 7 percent; tungsten from about 3 to about 5 percent; niobium from about 1 to about 3 percent; cobalt from about 3 to about 5 percent; boron from zero to about 0.2 percent; and the balance containing iron and incidental impurities. The alloy is suitable for use in elevated temperature applications such as in valve seat inserts for combustion engines. | 02-05-2015 |
| 20150047596 | VALVE SEAT - Provided is a valve seat having excellent strength and wear resistance. In a valve seat using an iron-based sintered alloy, an oxide mains composed of triiron tetroxide is formed by oxidation treatment on the surface and interior of the iron-based sintered alloy, and the average area ratio of the oxide mainly composed of triiron tetroxide in a cross section of the iron-based, sintered alloy in the state prior to installation on a cylinder head is 5 to 20%. Preferably, the iron-based sintered alloy contains hard particles formed from at least one compound of carbides, silicides, nitrides, borides, and intermetallic compounds containing one or more elements selected from groups 4a to 6a of the periodic table, and the average area ratio of the hard particles in the cross section of the iron-based sintered alloy in the state prior to installation on a cylinder head is 5 to 45%. | 02-19-2015 |
| 20150300303 | Valve Device - A valve device includes a housing, a flow duct and a valve body. The valve body is arranged in the flow duct and has a sealing section that bears against a housing-side sealing seat when the valve device is closed. The sealing section and the sealing seat together form a sealing region. There is a collapse zone immediately upstream of the sealing region in the flow duct when the valve device is closed. The collapse zone is delimited by a boundary wall that is at least substantially perpendicular with respect to a movement axis of the valve body and by a deflector wall that is arranged at an angle with respect to the boundary wall. The boundary wall is longer than the deflector wall. | 10-22-2015 |
| 20160160699 | VALVE SEAT STRUCTURE - A valve seat structure includes a cylinder head configured to be mounted at an upper part of a combustion chamber, at least one valve port configured to be formed at a part of the cylinder head being opened and closed by a valve, and a valve seat configured to be mounted along an inner circumferential surface of the valve port, wherein a part of the valve seat is provided with a high hardness material portion made from a high hardness material. | 06-09-2016 |
