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JP2021152395A |
To provide a piston ring for a vehicular shock absorber that less likely causes the leakage of oil between an outer peripheral surface and an inner peripheral surface of a cylinder, and can suppress the lowering of attenuation force.A pi...
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JP6938807B1 |
A sliding member that has a DLC film with excellent heat resistance, can obtain high wear resistance regardless of whether the lubricating oil contains an organic molybdenum compound, and can realize a lower coefficient of friction. I wi...
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JP6924797B2 |
To provide a technique capable of improving oil sealing performance and reducing oil consumption in a combination of piston rings.In a combination of piston rings, the second ring has an undercut surface, and at least one of an inner cut...
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JP6920698B2 |
To provide a sliding member comprising a coating film exhibiting constant and stable chipping resistance and wear resistance and excellent in peeling resistance (adhesion), and the coating film thereof. The problem is solved by a sliding...
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JP6918052B2 |
To provide a piston ring capable of suppressing a risk related to a blowby gas due to corrosion of a ring groove of a piston.The piston ring has resin-based coating film on an upper surface and a lower surface of the piston ring. The res...
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JP6913751B2 |
Piston ring having an endless base ring and sealing ring have a radially outwardly directed base ring face side. The sealing ring has a radially inwardly directed, circularly running sealing ring inner side with three tangential cuts sep...
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JP2021518509A |
The present invention relates to a piston ring for a two-stroke engine provided with a wear indicator, the piston ring comprising a piston ring body having an outer surface, two piston ring side surfaces, and an inner surface of the pist...
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JP6911051B2 |
A sliding element, in particular a piston ring, has a coating which has the following layers from the inside outwards: a polycrystalline, metal-containing adhesive layer, an intermediate layer, and at least one amorphous carbon layer, th...
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JP6906615B2 |
The invention relates to a piston ring, having a ring body (14) of gray cast iron, which has a region of ledeburite microstructure (4) on at least one ring flank (8), which region of ledeburite microstructure extends to the ring running-...
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JP2021516746A |
The present invention relates to an oil ring for an internal combustion engine and a piston coupling including the oil ring for an internal combustion engine. A compression part that protrudes to the upper part of the main body and is in...
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JP6896040B2 |
To solve such a problem that aluminum adhesion to a piston ring may occur when an aluminum alloy is used as a piston material and a problem of wear of a piston ring groove.The problems are solved by a combination of a piston for an inter...
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JP6890149B2 |
To provide a piston of an internal combustion engine that reduces unburned gas remaining between a side wall of the piston of the internal combustion engine and a cylinder and that improves fuel economy performance and emission performan...
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JP6889692B2 |
To provide a piston ring mounting piston capable of realizing both improvement of fuel economy and prevention of LOC deterioration.In a ring-mounted piston 2, a top ring 20 and an oil ring 10 have a DLC film on their outer peripheral sur...
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JP2021085408A |
To provide a piston ring for a large engine with at least one cylinder in which a piston capable of reciprocating motion is disposed.A piston ring 1 comprises: a base body 7 made of a first material having a first coefficient of thermal ...
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JP2021080897A |
To realize control of pressing force of a piston ring on an inner wall surface of a cylinder bore in accordance with an operation condition.A piston ring 21 is made of a magnetic material. An internal combustion engine 10 comprises a per...
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JP6877568B2 |
The present invention relates to a plunger (1) for feeding encapsulating material to a mould cavity, comprising a closed first (2) and second (3) groove recessed into and enclosing the cylinder casing of the plunger, wherein the second g...
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JP6873153B2 |
A piston ring is provided with is furnished with a diamond-like carbon (DLC) layer as a functional/wear protection layer, wherein the DLC layer is covered with a protective layer, the material of which differs from that of the DLC layer,...
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JP6866400B2 |
An oil wiper ring is provided having two circumferential shoulders, the running surfaces whereof are outwardly curved, wherein the shoulder of the combustion chamber side has an axial height greater by at least a factor of 2 than the axi...
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JP6861217B2 |
The present invention relates to a tribological system (1; 2) comprising a first body (102; 105) and a second body (101; 107), which each form a component of an internal combustion engine (100), in particular a piston (102), a piston rin...
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JP2021060048A |
To provide an internal combustion engine sliding structure realizing further improvement in fuel efficiency and reduction in oil consumption.An internal combustion engine sliding structure comprises a cylinder bore 10, a piston 30 and a ...
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JP6860328B2 |
To provide a piston ring which reduces friction force between a ring and a cylinder inner wall and presets excellent lubrication property, while keeping an excellent gas seal characteristic and an oil consumption characteristic.A piston ...
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JP6858791B2 |
A compression piston ring is provided, in particular a piston ring suitable as a second piston ring in a three-ring piston ring set, which piston ring has convex sections and concave sections alternating in the circumferential direction ...
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JP2021055718A |
To provide a sliding member capable of realizing both high abrasion resistance and a low friction coefficient in sliding under lubricant containing an organic molybdenum compound.A sliding member 100 is used under the presence of lubrica...
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JP2021046797A |
To provide a piston for an internal combustion engine having further improved durability and a method for manufacturing the piston for the internal combustion engine.In a piston for an internal combustion engine, a piston ring groove is ...
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JP6842165B2 |
To provide a film deposition technique such that a CrN layer can be coated with a hard carbon layer through a series of processes in the same film deposition apparatus, and superior slide characteristics can be stably secured by making t...
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JP6836690B2 |
An oil control ring according the present disclosure includes a pair of side rails, and a spacer expander disposed between the pair of side rails, in which the spacer expander includes a plurality of lug parts with which inner circumfere...
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JP6836945B2 |
To reduce mechanical loss and suppress deterioration in gas seal function by reducing frictional resistance, in a piston ring and a piston.In a piston ring provided at an outer peripheral surface of a piston 13 of an engine, a plurality ...
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JP6838296B2 |
To provide an internal combustion engine capable of reducing engine oil consumption while suppressing friction loss increase.In an internal combustion engine (10), a portion (48) of a minimum diameter (Dcmin) of a cylinder bore (20) with...
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JP6835785B2 |
To provide a technology that enables further improvement of oil seal performance of a compression ring.A compression ring is provided at a ring groove formed at a piston attached to a cylinder of an internal combustion engine and has: a ...
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JP2021504633A |
The piston ring (10) has a coated sliding surface (12) and a flank surface (14), and the uppermost layer of the sliding surface (12) is a hydrogen-containing or hydrogen-free DLC layer, and the piston ring (10) 10) is characterized in th...
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JP6820283B2 |
The invention relates to a piston ring of a reciprocating piston internal combustion engine, comprising a ring body with an open abutment, a radially outer running surface side, a radially inner circumferential side, two axially opposite...
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JP6814406B2 |
To provide a surface structure of an aluminum member which is capable of reducing the heat held in a surface side of an oxide film of the aluminum member and further enhancing adiabaticity or heat shielding property and has lower density...
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JP6817848B2 |
This piston is provided with an annular piston band (7). The piston band (7) has an annular protrusion (8) formed at one axial end of the piston band (7) and having a larger outer diameter than the remaining portion of the piston band (7...
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JP6817374B2 |
According to the present invention, the outer circumferential surface (1) of a side rail (11) is provided with: a pair of lateral adjacent parts (3, 4); an outermost diameter part (6); and at least one recessed part (7, 8). The contour l...
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JP6802181B2 |
A piston ring (2) has at least one ring flank seal (14) arranged on a lower ring flank (8) of the piston ring.
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JP6799704B1 |
To provide a technique capable of forming a uniform contact surface having a small contact width in a piston ring having a tapered outer peripheral surface. Of the surface of a wire rod, a first side surface forming an outer peripheral s...
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JP6802402B1 |
To provide a combustion visualization engine provided with a piston ring capable of reducing the frequency of replacement of a piston ring even in a non-lubricated environment and suppressing adhesion of wear to the inner wall of a perme...
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JP6790322B2 |
To provide a piston ring which can achieve sealability and abrasion resistance.A piston ring 3A includes: a seal ring 30A; and a tension ring 40A which is provided at the radial inner side of the seal ring 30A and biases the seal ring 30...
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JP6788913B2 |
To provide a manufacturing method with mass-productivity for a multi-component target for low-friction coating of a combustion engine component, and to provide a nano composite coating layer which has ultimately superior properties.A ZrC...
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JP6784608B2 |
A coating device that can control a coating thickness distribution along the circumferential direction of a work is provided. The coating device includes a work turning device (5) that holds a plurality of works (100) to rotate and revol...
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JP6784869B2 |
To provide a piston ring excellent in thermal setting resistance, and also excellent in side surface wear resistance even under such a high-temperature high-pressure environment as to be more than 300°C and up to 400°C, the base metal ...
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JP6780519B2 |
To provide a piston ring enabling suppressing accumulation of deposits, and reducing friction loss by reducing pressure which presses the piston ring downward.A piston ring 1 fitting to a ring groove 33 of a piston 31 has a joint part. T...
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JP2020530541A |
The ring set (220, 230) is configured to be placed on the piston (226) to seal the gas in the high pressure region of the cylinder (260) without oil or other liquid lubricant. The ring set includes one or more rings made from high streng...
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JP2020172684A |
To provide a sliding member including a hard film excellent in heat resistance and oxidation resistance even at high temperature environment in the atmosphere.A sliding member 100 includes a base material 10 and an amorphous carbon coati...
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JP6774235B2 |
To provide a slide member in which an abrasion-resistant surface treatment layer and a ground layer are not formed, and which is excellent in abrasion resistance and peeling resistance, and includes an amorphous hard carbon film with a l...
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JP6765197B2 |
To provide a piston ring assembly capable of improving its airtightness while improving its productivity.Outer peripheral side protrusions 22, 32 are concentrically protruded from outer peripheral portions of one-ends 21a, 31a of piston ...
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JP6762887B2 |
To provide a piston ring which is easy in film formation, and has a hard carbon film which is excellent in abrasion resistance.A piston ring has a hard carbon film 4 which is formed on an external peripheral slide face 11 of a piston rin...
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JP6762657B2 |
To provide a side rail which can be easily distinguished in vertical directivity.A side rail 1 has an outer peripheral surface 14 turning to the outside in a diametrical direction, an inner peripheral surface 13 turning to the inside in ...
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JP6757769B2 |
To provide a piston ring coated with a DLC coating having wear resistance and a low attacking property to a cylinder bore sliding surface.A piston ring has a sliding surface coated with a DLC coating. The DLC coating has the number of pi...
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JP6759467B2 |
To provide a sliding member, such as a piston ring for an internal combustion engine, having low friction and excellent toughness. The above-described problem is solved by a sliding member (10) such as a piston ring coated with a Cr-B-Ti...
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