Class / Patent application number | Description | Number of patent applications / Date published |
123274000 | Having combustible mixture forming means | 23 |
20080196690 | Internal combustion engine with auxiliary combustion chamber - An internal combustion engine, including a main combustion chamber serving as a main combustion chamber, an auxiliary combustion chamber adjacent to the main combustion chamber and smaller in capacity than the main combustion chamber, and a partition wall between the main combustion chamber and the auxiliary combustion chamber, the partition wall including an injection hole by which the main combustion chamber and the auxiliary combustion chamber communicate. A fuel supply device supplies fuel to the main combustion chamber and the auxiliary combustion chamber. A mixture forming device forms a mixture of air and the supplied fuel in the main combustion chamber, away from the partition wall before ignition. An ignition device ignites the fuel in the auxiliary combustion chamber, propelling an ejecting torch flame into the mixture of air and fuel in the main combustion chamber through the injection hole, thereby burning the mixture of air and fuel in the main combustion chamber. | 08-21-2008 |
20150369118 | COMBUSTION-POWERED TOOL WITH FLEXIBLE SILICONE CONTROL CHECK VALVE OPERABLE BETWEEN A PRIMARY COMBUSTION CHAMBER AND A SECONDARY COMBUSTION CHAMBER - A combustion-powered tool comprises a primary combustion chamber, a secondary combustion chamber, and a working piston that is in fluidic connection with the secondary combustion chamber so as to be exposed to the pressures developed within the secondary combustion chamber, when combustion takes place within the secondary combustion chamber, such that the working piston can be driven through its working or power stroke. A flexible silicone rubber plate-type control check valve is interposed between the primary combustion chamber and the secondary combustion chamber so as to control the flow of combustion products from the primary combustion chamber into the secondary combustion chamber and yet prevent the flow of combustion products from the secondary combustion chamber back into the primary combustion chamber, when combustion occurs within the secondary combustion chamber, such that the pressures developed within the secondary combustion chamber, as a result of the combustion of the air/fuel mixture within the secondary combustion chamber, can in fact act upon the working piston so as to drive the same through its working or power stroke. | 12-24-2015 |
20160053667 | PRECHAMBER ASSEMBLY FOR AN ENGINE - A prechamber assembly for an engine is disclosed. The prechamber assembly includes an air-fuel chamber and a prechamber in fluid communication with the air-fuel chamber via a conduit. The conduit includes a first end disposed in the air-fuel chamber and a second end disposed in the prechamber to allow premixed air-fuel mixture to flow from the air-fuel chamber to the prechamber. The prechamber is to receive a lean air-fuel mixture during a compression stroke of the engine. Further, the prechamber assembly also includes a valve disposed at the first end of the conduit, the valve configured to allow the premixed air-fuel mixture to flow from the air-fuel chamber to the prechamber. The premixed air-fuel mixture entering the prechamber mixes with the lean air-fuel mixture to form a stoichiometric ratio of a rich air-fuel mixture. | 02-25-2016 |
123275000 | By fuel injection into precombustion or main combustion chamber | 20 |
20100116242 | METHOD OF INITIATING COMBUSTION IN AN INTERNAL COMBUSTION ENGINE, AND AN ENGINE APPLYING THE METHOD - The invention relates to a method of initiating combustion in an internal combustion engine that comprises a main chamber ( | 05-13-2010 |
20110120410 | GASOLINE DIRECT INJECTION ENGINE - A gasoline direct injection engine that has an injector directly injecting fuel into a combustion chamber, a spark plug, an intake valve, and an exhaust valve and generates power by reciprocating a piston in a cylinder, may include a cavity formed on a piston head and returning some flow of the fuel injected from the injector to the intake valve, and a channel formed around the cavity. | 05-26-2011 |
20110214639 | GAS ENGINE - Provided is a gas engine having a spark plug provided with a pre-combustion chamber and a check valve, the gas engine, in which the check valve is arranged in the neighborhood of the pre-combustion chamber, being capable of preventing adhesion of a solenoid controlled valve provided at an upstream side of the check valve due to soot accumulation, and dead volume in a fuel inlet passage. In a gas engine in which fuel gas is supplied to the pre-combustion chamber through the fuel gas inlet passage and the fuel gas supplied in the pre-combustion chamber is ignited by spark discharge at the spark plug that is fitted to a mounting hardware piece via a seat surface, a solenoid valve for performing open-close control of the fuel gas is provided, and a first check valve is also provided posterior to a discharge side of the solenoid valve so as to prevent back flow of the combustion gas from the pre-combustion chamber to the solenoid controlled valve. | 09-08-2011 |
20110271930 | GAS ENGINE WITH SPARK PLUG AND BORE-COOLING HOLES - Provided is a check valve structure capable of preventing soot accumulation in a check valve arranged in a pre-combustion chamber ( | 11-10-2011 |
20110303185 | Split Cycle Engine and Method with Increased Power Density - Split cycle engine and method in which output power and power density are increased in some embodiments with a turbocharger or supercharger which increases the pressure in the compression cylinder and also increases the power output of the engine without a corresponding decrease in the efficiency of the engine (work done per unit fuel). In other embodiments, the engine is used for braking, and the energy produced by braking is stored pneumatically and then used in driving the compressor. | 12-15-2011 |
20140158083 | SPARK IGNITION ENGINE - A spark ignition engine includes a main combustion chamber configured to suction a mixture through an intake port, a pre-chamber configured to communicate with the main combustion chamber, an auxiliary cylinder configured to communicate with the main combustion chamber via the pre-chamber, an auxiliary intake passage connecting the auxiliary cylinder and the intake port, an auxiliary piston, and a spark plug configured to ignite the mixture in the pre-chamber. The auxiliary piston is configured to slidably reciprocate in the auxiliary cylinder such that the mixture is suctioned from the intake port via the auxiliary intake passage and the mixture is discharged to the main combustion chamber via the pre-chamber. | 06-12-2014 |
20140261298 | PRE-CHAMBER FOR INTERNAL COMBUSTION ENGINE - Described herein is a combustion pre-chamber apparatus for a main combustion chamber of an internal combustion engine that includes a body that defines an internal combustion cavity. The apparatus also includes at least one orifice that extends through the body. The at least one orifice includes a first end open to the internal combustion cavity and a second end open to the main combustion chamber. The first end is bigger than the second end. | 09-18-2014 |
20140331960 | FLAME JET IGNITION ENGINE - A flame jet ignition engine enables air to be effectively fed to an auxiliary combustion chamber, thereby ensuring facilitating the formation of a fuel mixture of fuel and air and therefore leading to the smooth, stable ignition of the fuel mixture in the auxiliary combustion chamber. | 11-13-2014 |
20150034043 | SUBCHAMBER TYPE COMBUSTION CHAMBER FOR DIESEL ENGINE - A subchamber type combustion chamber for a diesel engine, which reduces fuel consumption rate and combustion noise. To achieve the object, a subchamber type combustion chamber is communicated with a main combustion chamber through a nozzle hole, a fuel injection nozzle faces into the subchamber, and a glow plug extends into the subchamber. A heat generating portion of the glow plug includes a rod-shaped portion and a projecting portion projecting from an end of the rod-shaped portion. The projecting portion is provided with a convex curved surface projecting from a circular peripheral edge at the end of the rod-shaped portion while the convex curved surface is reduced in diameter. The percentage of value P/D obtained by dividing projection dimension P of the projecting portion from the end of the rod-shaped portion by diameter dimension D at the end of the rod-shaped portion is 3% to 23%. | 02-05-2015 |
20160053672 | FUEL SUPPLY SYSTEM FOR ENGINE - A fuel supply system for an engine is disclosed. The fuel supply system includes a prechamber assembly in fluid communication with a fuel supply line having a first end and a second end. The prechamber assembly is enclosed within a cylinder head of the engine. The prechamber assembly further includes a pre-combustion chamber located upstream of a main combustion chamber. The pre-combustion chamber is adapted to supply fuel into the main combustion chamber. The prechamber assembly further includes a check valve that is located upstream of the pre-combustion chamber. The fuel supply system further includes a fuel injector that is adapted to fluidly communicate with the check valve of the prechamber assembly. The fuel injector is located upstream of the check valve and in fluid communication with the fuel supply line. The fuel supply system further includes a controller in electric communication with the fuel injector. | 02-25-2016 |
20160160741 | DUAL FUEL ENGINE WITH MICRO-PILOT FUEL INJECTOR - A dual fuel engine is provided. The dual fuel engine includes an engine cylinder that is adapted to house a piston. A cylinder head is coupled with the engine cylinder. An inlet valve is adapted to inject a second fuel into the engine cylinder. A pre-combustion chamber is adapted to be coupled within the cylinder head to receive a first fuel via a micro-pilot fuel injector. As piston moves towards a top dead center pushing a portion of the second fuel into the pre-combustion chamber via a communication channel, the piston compresses the portion of the second fuel and the first fuel in the pre-combustion chamber for igniting the first fuel and combusting the second fuel. This generates a combustion flame. The pre-combustion chamber is adapted to allow the combustion flame to propagate from the pre-combustion chamber to the engine cylinder via the communication channel. | 06-09-2016 |
20160177851 | METHOD FOR OPERATING A SPARK IGNITED ENGINE | 06-23-2016 |
123276000 | Fuel injected into precombustion chamber formed in piston | 8 |
20090084346 | GAS FLOW INJECTOR AND METHOD OF INJECTING GAS INTO A COMBUSTION SYSTEM - An improved gas flow injector has been developed for use in a combustion system. The gas flow injector has an inner nozzle with tubular configuration for directing a first gas stream to a location distal to the gas flow injector. The inner nozzle has an outlet end portion and a longitudinal central axis. Disposed about the inner nozzle is an outer nozzle having a tubular configuration, for directing a second gas stream to a location proximal to the gas flow injector. A diverter is mounted to the outlet end portion of the inner nozzle and extends at least partially into the second gas stream. The diverter has a surface disposed at an acute angle relative to the longitudinal central axis of the inner nozzle to redirect at least a portion of the second gas stream in a direction transverse to the longitudinal central axis. Also disclosed is a method of injecting a gas into a combustion system using the gas flow injector of this invention. | 04-02-2009 |
20090205607 | INTERNAL COMBUSTION ENGINE INCLUDING A PISTON WITH A GEOMETRICALLY-COMPLEX BOSS - An engine including a cylinder including a sliding piston with a combustion bowl associated with an off-center injector. The injector sprays fuel in a conical injection pattern form having an apex and is formed by asymmetrical jets that travel different lengths before coming into contact with an inner wall of the bowl. The wall includes a groove centered on a main axis and connected to a base from which a boss extends. The boss includes: a lower cone frustum including a base included in a horizontal plane of the base and centered on the main axis of symmetry, having an apex as the symmetrical point of the apex of the injection pattern in relation to the main axis of symmetry; and an upper cone frustum including a base formed by an upper horizontal face of the lower cone frustum, having an apex corresponding to the injection pattern apex. | 08-20-2009 |
20090217905 | DIRECT INJECTION TYPE OF DIESEL ENGINE - A center cavity made up of a generally circular recess is formed in a head of a piston. An injector is provided for injecting fuel into the center cavity. Sub-cavities are connected to the center cavity on the periphery side of the head. The injector is positioned to inject fuel to a border portion between the sub-cavities and the center cavity. | 09-03-2009 |
20100108022 | DIRECT FUEL-INJECTED ENGINE - In a cross section in which squish flow from an outer peripheral part of a piston ( | 05-06-2010 |
20100147260 | DIRECT FUEL-INJECTION ENGINE - A direct fuel-injection engine includes a piston, a cavity recessed in a central part of a top face of the piston, and a fuel injector. At a main injection collision point of a fuel-injection axis when main injection is performed while the piston is near top dead center, a main injection collision angle formed between its tangent and the fuel-injection axis is set at an obtuse angle. Fuel colliding with the main injection collision point is deflected towards a cavity open end side. At a secondary injection collision point of the fuel-injection axis when performing secondary injection with the piston is further from top dead center, a secondary injection collision angle formed between its tangent and the fuel-injection axis is set at one of a right angle and an acute angle. Fuel colliding with the secondary injection collision point is deflected primarily in the circumferential direction of the cavity. | 06-17-2010 |
20110253094 | Piston Bowl With Spray Jet Targets - A piston for a direct injection engine is provided, the piston having a bowl at an upper end, the bowl forming a portion of a combustion chamber. The bowl includes an inner surface that defines a volume configured to receive a fuel-air mixture, the inner surface of the bowl including at least one surface feature that forms at least one edge portion as a target for the fuel spray, the edge portion defined by two or more surface portions. The surface feature may protrude from the inner surface of the bowl or may be recessed into the inner surface. Such surface features may reduce soot and improve fuel-air mixing. | 10-20-2011 |
20110253095 | Piston Bowl With Spray Jet Targets - A piston for a direct injection engine is provided, the piston having a bowl at an upper end, the bowl forming a portion of a combustion chamber. The bowl includes an inner surface that defines a volume configured to receive a fuel-air mixture, the inner surface of the bowl including at least one surface feature as a target for the fuel spray, the surface feature angled 20° to 80° from the piston face. The surface feature may protrude from the inner surface of the bowl or may be recessed into the inner surface. Such surface features may reduce soot and improve fuel-air mixing. | 10-20-2011 |
20110259297 | Piston Bowl With Deflecting Features - A piston for a direct injection engine is provided, the piston having a bowl at an upper end, the bowl forming a portion of a combustion chamber. The bowl includes an inner surface and a dome that defines a volume configured to receive a fuel-air mixture, the inner surface of the bowl and the dome each including at least one surface feature as a target for the fuel spray. The surface feature may protrude from the inner surface of the bowl or may be recessed into the inner surface. Such surface features may reduce soot and improve fuel-air mixing. | 10-27-2011 |