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JP7319852B2 |
An engine includes a cylinder head, an ignition plug disposed in the cylinder head, a head partition wall disposed on the cylinder head to surround a periphery of the ignition plug, an injector disposed in the cylinder head and having an...
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JP2023104199A |
To reduce thermal stress between a valve seat comprising a cladding material and a metallic base material.In a cylinder head for an internal combustion engine, an inner wall surface serving as an inner face of a combustion chamber is pro...
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JP7312362B2 |
An engine system includes an engine, a main combustion chamber formed by a cylinder head and a piston, an auxiliary chamber formed with a communicating hole communicating with the main combustion chamber, an injector configured to inject...
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JP7310387B2 |
To enable the ignition of air-fuel mixture even when injecting water into a combustion chamber.A combustion chamber structure for an engine 1 includes a combustion chamber 11, an ignition device (a spark plug 65) arranged on a ceiling pa...
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JP7310371B2 |
To provide an internal combustion engine intake apparatus that is advantageous in improving the performance of an internal combustion engine by enhancing swirls inside of a cylinder in a low revolution speed range of the engine, thus inc...
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JP7306520B1 |
An internal combustion engine and a fuel injection system capable of changing the injection direction of fuel with a simple configuration are provided. An internal combustion engine includes a piston that reciprocates within a cylinder, ...
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JP2023096412A |
To provide a gas engine with excellent combustibility for burning gas, which has, in a cylinder, a plurality of fuel injection valves for injecting gas of fuel, does not need to increase the rigidity of the engine itself by preventing a ...
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JP7303002B2 |
To provide a piston capable of realizing uniform combustion by preventing a phenomenon that an air-fuel mixture locally stays in a compression stroke.A piston 9 used in a pent roof-type internal combustion engine is provided with an inta...
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JP7302462B2 |
A spark plug includes a ground electrode, an insulator, and a center electrode. In a case where a first position of a surface of the ground electrode exposed to a side of an inner wall surface of a cylinder head is a most downstream posi...
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JP7299857B2 |
A port injection engine, in which injected fuel readily vaporizes inside suction ports, includes: a suction port; a suction valve; and a port injector that injects fuel to an inner peripheral surface of the suction port. When the fuel is...
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JP7298465B2 |
To speedily obtain an octane value of fuel after refueling.A control device of an engine 1 comprises: a fuel supply section (injector 6 and fuel supply system 61); an ignition section (ignition plug 25); a measuring section (in-cylinder ...
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JP7294080B2 |
To promptly determine an octane value.A control device of an engine 1 comprises fuel supply sections (an injector 6 and a fuel supply system 61) and an ignition section (ignition plug 25), a measurement section (cylinder inner pressure s...
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JP7294251B2 |
A combustion system is applied to an engine. The combustion system includes an injection device that injects a fuel into a combustion chamber, a spark plug that ignites fuel in the combustion chamber, and a control device that controls t...
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JP2023082668A |
To provide a large engine hardly affected by knocking.In a large engine including at least one cylinder 1 in which a piston 3 is arranged for a reciprocating movement along a cylinder axis A between a top dead center position and a botto...
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JP2023081535A |
To provide a spark plug for an internal combustion engine, the spark plug enabling stable combustibility to be obtained in an operation region of the internal combustion engine from low loading to high loading, and an internal combustion...
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JP7285795B2 |
An engine according to an embodiment includes at least one cylinder, at least one piston disposed in the at least one cylinder, a plurality of fuel injection valves disposed on the at least one cylinder, the plurality of fuel injection v...
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JP7283055B2 |
To provide a combustion chamber structure for an engine using SI combustion and SPCCI combustion in combination for maintaining both a tumble flow and a swirl flow until a late period for a compression stroke.A combustion chamber of the ...
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JP7282312B2 |
To provide a learning control method of a fuel injection amount which can effectively perform learning even if fuel injection is dividedly performed a plurality of times during one cycle of an engine.This learning control method of a fue...
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JP7282311B2 |
To provide a learning control method of a fuel injection amount which can quickly learn a control parameter with respect to an injector.This learning control method of a fuel injection amount for controlling an injector (6) in which the ...
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JP7275955B2 |
A control device for controlling an engine provided with a fuel pump including a pressurizing chamber, a plunger inserted into the pressurizing chamber and which changes a volume of the pressurizing chamber, and an on-off valve configure...
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JP7274344B2 |
To provide a spark plug for an internal combustion engine capable of increasing ignitability and an internal combustion engine having the same.A spark plug 1 for an internal combustion engine includes a cylindrical insulator 3, a center ...
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JP2023067518A |
To provide a spark plug which can be efficiently manufactured.In a spark plug 1, a plug cover 5 is fixed to a tip end of a housing 2 such that it covers a sub-combustion chamber 10 in which a discharge gap G is located. At a tip end of t...
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JP7271912B2 |
To provide a combustion chamber structure for an engine capable of actualizing high combustion efficiency by maintaining a swirl flow in SPCCI combustion until a late period for a compression stroke.A combustion chamber of an engine body...
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JP7271420B2 |
The disclosure provides a piston crown for a piston mountable in a combustion cylinder of an internal combustion engine. The piston crown includes a top annular surface. Radially inside the top annular surface is a piston bowl for guidin...
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JP2023063835A |
To provide a combustion chamber structure of an internal combustion engine capable of suppressing interference of intake flows flowing into a combustion chamber from intake ports adjacent to each other.In a combustion chamber structure o...
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JP7268512B2 |
To improve the torque of an engine by injecting water heated by a heat-up part into a combustion chamber.A combustion chamber structure for an engine 1 includes a combustion chamber 11, an ignition device (a spark plug 65) arranged on a ...
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JP7267704B2 |
The present invention relates to an internal-combustion engine comprising a combustion chamber provided with a single intake valve (2), a single exhaust valve (3), two plugs (4a, 4b) and a fuel injector (5). Furthermore, the combustion c...
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JP2023061153A |
To improve the performance of mixing fuel and air in a combustion chamber of an engine.A passage formation member 9 is provided in a combustion chamber for allowing the passage of fuel spray injected from an injection hole of a fuel inje...
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JP2023061154A |
To improve the performance of mixing fuel and air in a combustion chamber of an engine.A passage formation member 11 is provided in a combustion chamber for allowing the passage of fuel spray injected from an injection hole of a fuel inj...
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JP2023059049A |
To secure combustion stability in a combustion cycle in which lean combustion is performed, while suppressing the amount of NOx emission down to a certain level or less.An internal combustion engine 100 comprises an engine body, a spark ...
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JP2023057808A |
To stabilize injection of a fuel, to improve fuel consumption, and to purify an exhaust gas by providing a residual inner peripheral wall surface found at an opening portion side of a mounting hole with a special shape.A mounting hole 12...
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JP2023055536A |
To provide an internal combustion engine capable of optimizing combustion.An internal combustion engine has a spark plug provided in a central portion of a ceiling of a combustion chamber of the internal combustion engine, an injector pr...
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JP7259725B2 |
To speedily determine an octane value.A control device of an engine 1 comprises: a fuel supply section (injector 6 and fuel supply system 61); an ignition section (ignition plug 25); a measuring section (in-cylinder pressure sensor SW5);...
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JP7259539B2 |
A controller for controlling a fuel injection valve and a fuel pressure adjustment mechanism sets an air-fuel ratio of a fuel-air mixture to be generated within a combustion chamber to an air-fuel ratio equal to or leaner than a theoreti...
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JP7259726B2 |
To curb abnormal combustion of fuel after refueling.A control device of an engine 1 comprises: a fuel supply section (injector 6 and fuel supply system 61); an ignition section (ignition plug 25); a measuring section (in-cylinder pressur...
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JP2023054895A |
To improve the stability of combustion by improving the flow of a tumble flow toward an ignition electrode in a combustion chamber and the injection of fuel against the tumble flow.An internal combustion engine 1 has an intake port 17 an...
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JP7256616B2 |
To suppress reduction of the maximum output while improving fuel consumption.An engine includes: a cylinder 3 provided with a combustion chamber in which a first port 14, and a second port 15 larger in flow rate coefficient than the firs...
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JP7255673B2 |
An auxiliary-chamber-type internal combustion engine comprises a main chamber, an auxiliary chamber, a communication path, and an injection unit. The injection unit has a plurality of first injection ports that inject fuel into the main ...
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JP2023048515A |
To improve coating efficiency and productivity in applying a heat insulation material to a crown surface 9 of a piston 1 of an engine.A method for applying a heat insulation material for a piston includes the steps of: disposing a dispen...
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JP7251287B2 |
To compatibly suppress abnormal combustion and improve emission performance in a high-load region.A control device in this invention is applied to an engine which enables premixed compression ignition combustion to combust fuel injected ...
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JP7250250B2 |
To accurately make an abnormality determination of a differential pressure sensor and appropriately suppress deterioration of fuel economy when the differential pressure sensor is abnormal in a control method for an engine including the ...
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JP7248413B2 |
A valve-piston system (20) of a cylinder of an internal combustion engine, with a piston (26) that is moveably guided up and down, with at least one inlet-side gas exchange valve (21) and at least one exhaust-side gas exchange valve (22)...
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JP7243431B2 |
To secure combustion stability while accurately removing deposits from an injection hole of a fuel injection valve.An ECU 20 includes an injection control part 22 for controlling an injector 15, a deposit estimation part 27 for performin...
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JP7243611B2 |
To easily form a heat insulating layer which is excellent in quality, specifically is free from peeling and the like, on the wall surface of a combustion chamber of an internal combustion chamber.A method of manufacturing the internal co...
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JP7243610B2 |
To easily form a heat insulating layer which is excellent in quality, specifically is free from peeling and the like, on the wall surface of a combustion chamber of an internal combustion chamber.A method of manufacturing an internal com...
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JP7238459B2 |
To suppress accidental fire under a low load situation in a gasoline engine adopting premixed compression ignition.An engine controller estimates a combustion chamber wall surface temperature of a cylinder 12 in low-load HCCI control; wh...
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JP2023030484A |
To improve the homogeneity of air-fuel mixture in a combustion chamber 5 of an engine.A passage forming member 9 is provided for allowing fuel spray injected from part of injection holes 8 of a fuel injection nozzle 7 to pass therethroug...
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JP7234796B2 |
To secure combustion stability while accurately removing deposits from an injection hole of a fuel injection valve.An ECU 20 includes an injection control part 22 for controlling an injector 15, a deposit estimation part 27 for performin...
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JP2023029298A |
To provide a two-stroke uniflow scavenging cross head internal combustion engine including at least one cylinder, a cylinder cover, a piston, a fuel gas supply system connectable to a fuel gas tank, and a scavenging system.A fuel gas sup...
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JP7225594B2 |
To accurately determine a cylinder temperature in an engine which performs SPCCI combustion.Part of air-fuel mixture starts its combustion involving frame propagation with the forcible ignition of an ignition part, and then the remaining...
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