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JP7408963B2 |
To suppress the generation of soot by increasing the air utilization rate of fuel injected by after-injection while maintaining relatively good fuel consumption performance.A diesel engine has a piston having a cavity formed in a crown s...
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JP7408961B2 |
To suppress the generation of soot by increasing the air utilization rate of fuel injected by after-injection while maintaining relatively good fuel consumption performance.A diesel engine has a piston having a cavity formed in a crown s...
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JP7408962B2 |
A diesel engine system has a piston in which a cavity is formed in a crown surface. The cavity has a bottom part, a peripheral part dented so as to be convex radially outward in a cross-sectional view, and a lip part formed above the per...
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JP2023184033A |
To reduce a processing load on an ECU for controlling actuation of ignition plugs.An engine includes a main chamber ignition plug for igniting an air-fuel mixture inside a main combustion chamber, and a sub-chamber ignition plug for igni...
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JP2023183493A |
To suppress a sudden change in a noise level when switching ignition modes.An engine includes a main chamber ignition plug 9 for igniting an air-fuel mixture inside a main combustion chamber, and a sub-chamber ignition plug 8 for ignitin...
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JP7405006B2 |
To suppress two-stage combustion of a rotary engine.In a rotary engine, fuel injection start timing is set within a range from 60° before a bottom dead center of an intake stroke to 60° after the bottom dead center; an injector 21 is a...
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JP7405062B2 |
An engine system is provided, including a controller which estimates an intake-valve-closing temperature inside a cylinder. When an engine operates at a given speed and a demanded engine load is a first load or a second load (> the first...
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JP7405604B2 |
To significantly suppress heat loss by reducing the amount of flame directed toward a piston from a sub-flame injection hole while improving scavenging property/air-fuel mixture inflow property by forming the downward sub-frame injection...
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JP7403405B2 |
An inner circumferential wall surface of a cavity 3 of a piston 1 has a lower region 3a that goes halfway to an opening from an inner floor surface of the cavity 3 and is flush in the circumferential direction. The inner circumferential ...
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JP7397664B2 |
To provide a structure capable of smoothly jetting flame to an optimum direction from an auxiliary combustion chamber, in an internal combustion engine with the auxiliary combustion chamber.An auxiliary combustion chamber 13 is disposed ...
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JP7396173B2 |
A combustion chamber is partitioned by a cylinder block, a cylinder head, and a piston. The piston includes a piston body having an upper surface facing the combustion chamber, a heat-insulation layer provided at least in a central area,...
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JP2023173869A |
To provide an internal combustion engine and a piston, each enabling suppression of such a problem that fuel ingressed a gap (clevis) which is connected to a combustion chamber between the outer periphery of the piston and the inner peri...
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JP7388224B2 |
An internal combustion engine is provided with a pre-chamber provided inside a main combustion chamber. The pre-chamber includes an ignition plug, and a casing provided to a ceiling part to cover the ignition plug, the casing isolating a...
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JP2023166161A |
To provide an internal combustion engine capable of improving combustion in a combustion chamber.An internal combustion engine includes a cylinder liner, a cylinder head, an intake valve, an exhaust valve, a piston, and an injector. The ...
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JP7382019B2 |
To determine an abrasion amount of an ignition plug with high accuracy and to determine presence or absence of abnormality in the ignition plug with high accuracy in performing early ignition and main ignition.Early ignition is performed...
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JP7380803B2 |
A piston has a top surface (10, 20, 30, 40, 50, 60, 70) composed of porous alumina. Top surface includes a first region and a second region. The first region includes a part or all of a region connecting to an outer periphery of the top ...
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JP7381176B2 |
To improve reliability by preventing melting loss of an ignition plug, in an internal combustion engine in which a tip portion of the ignition plug is covered by an auxiliary combustion chamber.An ignition plug 10 and an igniter 11 are d...
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JP7379966B2 |
A diesel engine system is provided, which includes a piston having a cavity dented downwardly in a crown surface thereof and having a bottom part, a peripheral part dented so as to be convex radially outward, and a lip part formed above ...
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JP2023160254A |
To reduce a cooling loss through mirror-like finishing of a wall face configuring a combustion chamber and to prevent an increase in unburnt fuel and aggravation of knock resistance due to a reduction in gas turbulence in a squish area.A...
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JP2023160253A |
To reduce a cooling loss through mirror-like finishing of a wall face configuring a combustion chamber and to prevent an increase in unburnt fuel and aggravation of knock resistance due to a reduction in gas turbulence in a squish area.A...
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JP7369532B2 |
To restrain destabilization of fuel injection.An engine comprises a main fuel injection part for injecting main fuel to a combustion chamber, a liquid fuel injection part for injecting liquid fuel to the combustion chamber, and a fuel co...
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JP2023154256A |
To provide an intake system capable of making operation characteristics of an internal combustion engine variable.An intake system includes: a first intake valve which is provided on a swirl port of a combustion chamber of an internal co...
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JP7364720B2 |
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JP2023149881A |
To secure excellent combustion under various operation conditions.A controller of an engine device comprises: an engine 10 comprises a combustion chamber C comprising a main chamber 1 and a sub-chamber 11, an injection device 9 that supp...
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JP2023148340A |
To provide a two-stroke engine capable of improving a scavenging effect.A two-stroke engine E is equipped with an intake port 16 and an exhaust port 18 across a cylinder axis AX1 on a top wall 12a of a combustion chamber 12. The intake p...
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JP7358931B2 |
To prevent abnormal combustion.A control device of an engine 1 comprises a measurement section (level sensor SW11), an actuator (ignition plug 25), and a control section (ECU 10) which outputs a control signal according to an octane valu...
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JP2023145067A |
To provide a piston excellent in a tumble flow producing function and flame propagating performance.On a crown surface of a piston 5 are formed a center recess 21 long in a front-rear direction (crank shaft line direction) and squish sur...
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JP2023141933A |
To strengthen a tumble flow in a combustion chamber.An engine of one embodiment, being an engine having a cylinder main body has a cylinder head which is attached to the cylinder head, and in which an intake port and an exhaust port are ...
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JP2023141548A |
To provide an engine that can respond to high lean burn and high EGR with a simple structure.In a pent roof type downward recess 8 formed in a cylinder head 4, an ignition plug 17 is arranged at a site closer to an exhaust side from an a...
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JP7354805B2 |
To provide preferable operation even when fuel with a different octane number is used.A control device for an engine 1 burns part of a mixture with combustion accompanied by flame propagation with ignition by an ignition plug 25 and then...
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JP2023135713A |
To provide an internal combustion engine in which fuel spray is easily diffused uniformly.An internal combustion engine includes a cylinder head, and a cavity formed on a top surface of a piston and forming a combustion chamber between t...
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JP7352699B2 |
An internal combustion engine includes: a piston guided by a cylinder to reciprocate along a cylinder axis and forming a combustion chamber with a crown surface facing a cylinder head; and a fuel injection valve having an injection port ...
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JP2023131833A |
To improve thermal efficiency by activating combustion.A combustion chamber structure 100, having a cavity 10 circular in a planar view, recessed downward with respect to a piston top surface 9a, and provided for a direct injection diese...
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JP2023131577A |
To suppress generation of unburnt HC by promoting combustion in a squish area while enhancing gas flow and disturbance in a combustion chamber.A control device 200 of an internal combustion engine 100 is configured to perform lean combus...
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JP7347171B2 |
To provide preferable operation even when fuel with a different octane number is used.A control device for an engine 1 burns part of a mixture with combustion accompanied by flame propagation with ignition by an ignition plug 25 and then...
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JP7344464B2 |
To determine an abrasion amount of an ignition plug with high accuracy and to determine presence or absence of abnormality in the ignition plug with high accuracy, in response to strength of an intake flow.A swirl valve 56 for adjusting ...
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JP7344463B2 |
To determine an abrasion amount of an ignition plug with high accuracy and to determine presence or absence of abnormality in the ignition plug with high accuracy in performing main ignition and additional ignition.An engine executes add...
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JP7342471B2 |
An engine system includes a combustion chamber including a cylinder formed in an engine and a piston configured to reciprocate inside the cylinder, a spark plug disposed in a ceiling part of the combustion chamber, and a water injection ...
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JP7342998B1 |
An object of the present invention is to provide an internal combustion engine that can reduce heat loss even when a ring member is provided. [Solution] An internal combustion engine 1 includes a cylinder 10 in which a piston 15 reciproc...
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JP2023122715A |
To obtain stable ignition and combustion by simple control, and a favorable exhaust composition.An internal combustion engine which performs premixing compression self-ignition comprises a compression ratio variable mechanism which can c...
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JP7338729B1 |
An engine that efficiently supplies combustion gas to fuel. A fuel injection part for injecting fuel into a combustion chamber, and a partition wall part separating a supply chamber to which combustion gas is supplied and the combustion ...
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JP7334401B2 |
To provide a two-stroke engine which performs compression ignition combustion, for suppressing the worsening of thermal efficiency and the worsening of emission performance while actualizing high combustion stability and appropriate engi...
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JP7334403B2 |
To provide a two-stroke engine with supercharger 1 for actualizing stable self-ignition and combustion of fuel regardless of the ignitability of fuel itself while suppressing a change in the engine torque.When the operating condition of ...
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JP7331784B2 |
To curb CO2 emissions through a reduction in unburned ammonia with a burning rate of ammonia increased.In a diesel engine which performs mixed burning of ammonia premixed gas produced in a combustion chamber, a cylinder head 14 of the co...
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JP7331980B1 |
An engine that efficiently supplies combustion gas to a combustion chamber is provided. An engine main body, a fuel injection section arranged in the engine main body for injecting fuel into a combustion chamber, and a gas supply section...
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JP7327466B2 |
An auxiliary chamber type internal combustion engine includes a main chamber, an auxiliary chamber, a plurality of connecting passages connecting the main chamber with the auxiliary chamber, and an ignition plug configured to ignite a mi...
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JP2023535141A |
The present invention relates to a pre-chamber spark plug (1) suitable for use in a combustion chamber (12) of an internal combustion engine, said pre-chamber spark plug being adapted in intended use through at least one opening (3) to t...
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JP7325878B1 |
[Purpose] It operates with fuel generated from organic matter heated in anoxic conditions, such as food residue and animal excrement, and can operate by effectively burning combustible substances of fuel to achieve extremely high operati...
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JP7321108B2 |
An opposed-piston engine according to an embodiment is a first fuel injection device configured to inject fuel from a circumferential wall surface of at least one cylinder into the cylinder, and a second fuel injection device disposed to...
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JP2023533483A |
A precombustion chamber spark plug having a housing (6) and a cap (3) at least partially defining a precombustion chamber (2). The cap (3) has a plurality of through holes (30), and these through holes (30) connect the precombustion cham...
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