| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 123254000 | Chamber temperature control means | 20 |
| 20100095927 | INTERNAL COMBUSTION ENGINE - An engine block is disclosed in one embodiment having a cylinder shape bore, which forms the outside wall surface of a cylindrical air chamber. Radially outwards from the cylindrical air chamber there is an annular shape combustion chamber, which has a circular inner wall surface, circular outer wall surface, closed annular shaped top surface, and an annular shaped open end opposite of the top surface. The bottom end of the circular inner wall surface of the annular shape combustion chamber and the bottom end of the outside wall surface of the cylindrical air chamber defines an annular shape surface. This surface fits inside the annular shape air chamber in the piston assembly. In one embodiment, in the lower part of the circular inner wall surface of the annular shape combustion chamber there is a circular groove for an oil scraper ring of conventional design. | 04-22-2010 |
| 20110023817 | Variable-coordination-timing type self-cooling engine with variable-profile-camshaft - The present invention provides a variable-coordination-timing type self-cooling engine capable of adjusting the initiation timings and the injected amount of each injection process according to the change in the combusting pressure with the variable-coordinate-timing system. | 02-03-2011 |
| 20120125287 | Controlled Spark Ignited Flame Kernel Flow in Fuel-Fed Prechambers - A pre-chamber spark plug that includes a shell. Additionally, the pre-chamber spark plug includes an insulator disposed within the shell. In a particular embodiment, a center electrode has a first portion surrounded by the insulator, and a second portion that extends from the insulator into a pre-chamber. The pre-chamber defined by the shell. In a further embodiment, a ground electrode is attached to the insulator. In particular embodiments, the ground electrode is tubular in shape and includes an inner spark surface ring spaced in surrounding relation to the center electrode to create a spark gap, an outer ring attached to the shell, and a plurality of rounded spokes connecting the inner and outer rings. In a particular embodiment, the ground and center electrodes accommodate attachment of precious metal alloys to increase electrode surface life. In another embodiment the ground electrode and insulator is coaxial to the center electrode. | 05-24-2012 |
| 20120325179 | PRE-COMBUSTION CHAMBER TIP - A pre-combustion chamber tip for an internal combustion engine having a first body portion with a pre-combustion chamber located within, the first body portion having a terminal end with a plurality of orifices configured to direct expanding gases out of the pre-combustion chamber and a second body portion attached to the first body portion, the second body portion having an exterior surface, a cooling fluid opening formed in the exterior surface, a cooling fluid passage in fluid communication with the cooling fluid opening, and a ridge associated with the cooling fluid opening, the ridge extending from the exterior surface and configured to divert cooling fluid flow into the cooling fluid opening and cooling fluid passage. | 12-27-2012 |
| 20130000598 | DIVIDED-CHAMBER GAS ENGINE - A gas engine is configured to inject a combustion gas from an auxiliary combustion chamber through a plurality of nozzles, through which the auxiliary combustion chamber and a main combustion chamber are in communication with each other, so as to ignite a fuel in the main combustion chamber. An opening edge, at the auxiliary combustion chamber side, of each of the plurality of nozzles is formed to have a curved surface. This structure makes it possible to maintain stable combustion in the main combustion chamber while preventing degradation in combustion performance. | 01-03-2013 |
| 20130042834 | Controlled Spark Ignited Flame Kernel Flow in Fuel-Fed Prechambers - A pre-chamber spark plug that includes a shell. Additionally, the pre-chamber spark plug includes an insulator disposed within the shell. In a particular embodiment, a center electrode has a first portion surrounded by the insulator, and a second portion that extends from the insulator into a pre-chamber. The pre-chamber defined by the shell. In a further embodiment, a ground electrode is attached to the insulator. In particular embodiments, the ground electrode is tubular in shape and includes an inner spark surface ring spaced in surrounding relation to the center electrode to create a spark gap, an outer ring attached to the shell, and a plurality of rounded spokes connecting the inner and outer rings. In a particular embodiment, the ground and center electrodes accommodate attachment of precious metal alloys to increase electrode surface life. In another embodiment the ground electrode and insulator is coaxial to the center electrode. | 02-21-2013 |
| 20130055986 | Method and apparatus for achieving high power flame jets while reducing quenching and autoignition in prechamber spark plugs for gas engines - A prechamber spark plug may have a prechamber having a pre-determined aspect ratio and hole pattern to achieve particular combustion performance characteristics. The aspect ratio and hole pattern may induce a rotational flow of fuel-air in-filling streams inside the prechamber volume. The rotational flow of the fuel-air mixture may include both radial flow and axial flow characteristics based on the aspect ratio and hole pattern. Axial flow characteristics can include a first axial direction proximate the periphery of the rotational flow and a counter second axial direction approaching the center of the rotational flow. The radial and axial flow characteristics may further include radial air-fuel ratio stratification and/or axial air-fuel ratio stratification. The rotational flow, the radial flow and the axial flow may be adjusted by alteration of the aspect ratio and hole pattern to achieve particular combustion performance characteristics in relation to a wide variety of spark gap geometries. | 03-07-2013 |
| 20130139784 | PRECHAMBER DEVICE FOR INTERNAL COMBUSTION ENGINE - This disclosure relates to an improved prechamber device for an internal combustion engine. The prechamber device is positioned adjacent to a combustion chamber. The improved prechamber device is configured to improve removal of heat from the prechamber device, particularly in the area adjacent to the combustion chamber. | 06-06-2013 |
| 20130199492 | INTERNAL COMBUSTION ENGINE UTILIZING DUAL COMPRESSION AND SINGLE EXPANSION PROCESS - An internal combustion engine includes a compressor cylinder having a respective inlet, a first outlet and a respective piston slideably movable within the compressor cylinder and operatively connected to a rotating crankshaft. The compressor cylinder provides a first stage of compression to a charge when the charge is transferred from the compressor cylinder during every revolution of the crankshaft. A first power cylinder includes a respective inlet in fluid communication with the first outlet of the compressor cylinder, a respective outlet and a respective piston slideably movable within the first power cylinder and operatively connected to the rotating crankshaft. The first power cylinder provides a second stage of compression and firing of the charge within the first power cylinder every two revolutions of the crankshaft. | 08-08-2013 |
| 20130291826 | SYSTEMS AND VEHICLES INCORPORATING IMPROVED ENGINE COOLING AND ENERGY GENERATION - Internal combustion engines and vehicles incorporating the same, wherein the engine comprises a first combustion chamber having an intake and an exhaust port. An energy transfer device moves relative to the combustion chamber through a cycle comprising an intake stroke, a compression stroke, a power stroke, and an exhaust stroke. An injector injects fuel into the combustion chamber during at least one of the intake stroke and the compression stroke and an ignition feature ignites the fuel in the combustion chamber. A sensor detects a temperature of the combustion chamber and when the temperature reaches a predetermined value, the injector is configured to inject a working fluid directly into the combustion chamber during at least one of the power stroke and the exhaust stroke. The exhaust port of the first combustion chamber is fluidically coupled to an intake of a second combustion chamber. | 11-07-2013 |
| 20140053799 | PRE-CHAMBER - A pre-chamber is provided. In one embodiment, the pre-chamber is part of a two-stroke combustion engine having a cylinder head with a sparkplug receptacle that has a generally frustoconical shape, and the pre-chamber is coupled to the sparkplug receptacle. The pre-chamber may include a cooling jacket with a generally frustoconical shape and a combustion chamber having an upper zone and a lower zone, which may be narrower than the upper zone. | 02-27-2014 |
| 20140069370 | PRE-CHAMBER - A pre-chamber is provided. In one embodiment, the pre-chamber is part of a two-stroke combustion engine having a cylinder head with a sparkplug receptacle that has a generally frustoconical shape, and the pre-chamber is coupled to the sparkplug receptacle. The pre-chamber may include a cooling jacket with a generally frustoconical shape and a combustion chamber having an upper zone and a lower zone, which may be narrower than the upper zone. | 03-13-2014 |
| 20140251258 | SYSTEM FOR PILOT SUBCHAMBER TEMPERATURE CONTROL - There is described a system and method for controlling a temperature in the subchamber of a rotary engine. At least one first measurement of at least one engine operating parameter and a second measurement indicative of a present temperature in the subchamber are received. A setpoint for the temperature in the subchamber is computed from the at least one first measurement. In response to the second measurement, at least one control signal indicative of a request to adjust the present temperature towards the setpoint is generated and sent to the engine. | 09-11-2014 |
| 20150083070 | ARRANGEMENT COMPRISING A CYLINDER HEAD AND A PRECHAMBER SYSTEM - An arrangement comprising a cylinder head and a prechamber system for an internal combustion engine, wherein the cylinder head has a flame plate for delimiting a main combustion chamber and the prechamber system is at least partially arranged in an opening in the flame plate, wherein there is provided a cooling cavity substantially surrounding the prechamber system and arranged in the flame plate and/or in that region of the prechamber system that is in the opening. | 03-26-2015 |
| 20160061094 | PRE-CHAMBER - A pre-chamber is provided. In one embodiment, the pre-chamber is part of a two-stroke combustion engine having a cylinder head with a sparkplug receptacle that has a generally frustoconical shape, and the pre-chamber is coupled to the sparkplug receptacle. The pre-chamber may include a cooling jacket with a generally frustoconical shape and a combustion chamber having an upper zone and a lower zone, which may be narrower than the upper zone. | 03-03-2016 |
| 20160097317 | PRECHAMBER DEVICE FOR INTERNAL COMBUSTION ENGINE - This disclosure relates to an improved prechamber device for an internal combustion engine. The prechamber device is positioned adjacent to a combustion chamber. The improved prechamber device is configured to improve removal of heat from the prechamber device, particularly in the area adjacent to the combustion chamber. | 04-07-2016 |
| 20160177854 | METHOD FOR OPERATING A SPARK IGNITED ENGINE | 06-23-2016 |
| 20160195007 | Combustion Pre-Chamber and Method for Operating Same | 07-07-2016 |
| 20160195041 | Stable Combustion In Spark-Ignited Lean-Burn Engine | 07-07-2016 |
| 20160252007 | PRE-CHAMBER ASSEMBLY FOR ENGINE | 09-01-2016 |
