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JP7116718B2 |
To provide a long-life compression ring without an increase in the outer peripheral abrasion near the gap regardless of the ring material or the presence or absence of the outer peripheral hard coating, in an annular compression ring hav...
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JP2022109981A |
To provide a piston ring excellent in abrasion resistance, and capable of achieving both of low fuel consumption and efficient combustion.A piston ring for an internal combustion engine has an outer peripheral surface 14 formed to have a...
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JP7103722B2 |
To provide a damper which can easily adjust a friction property between a piston and a cylinder.A piston 17 has a piston main body 61 connected to a piston rod, and a piston band 62 attached to an external peripheral part of the piston m...
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JP2022099360A |
To provide a piston ring unit and a compressor which can restrain leakage of compression fluid from a high pressure side to a low pressure side.A piston ring unit 113 includes a first piston ring 114, a second piston ring 115, and a firs...
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JP2022099748A |
To provide a CrN film excellent in peel resistance, namely, hardly generating peeling of a film starting a crack, even under an environment having a severer lubrication environment.In a CrN film, priority orientation by XRD is 200, an X-...
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JP7094739B2 |
To provide a piston ring having a hard carbon film which can be easily deposited and has an excellent abrasion resistance.A hard carbon film 4 is formed on at least an outer peripheral slide face 11 of a piston ring base material 1. The ...
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JP7093899B1 |
To provide a sliding member having excellent sliding characteristics such as wear resistance and peeling resistance even in a severe sliding environment of an internal combustion engine. The sliding member is a sliding member for an inte...
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JP7085692B2 |
A method for manufacturing a piston ring according to the present disclosure includes: (A) a step of cleaning a surface of a substrate of the piston ring; and (B) a step of forming a film containing Si and N in a chamber using a physical...
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JP2022088457A |
To provide a component having a surface coated with a coating for reducing wear or friction.A component has a surface coated with a coating containing MoxCryN layer utilizable in an automobile field or the like, where, x and y correspond...
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JP2022087131A |
To provide a piston ring which is equipped with a coating including Si and N, and has a sufficiently high level of all of peel resistance, crack resistance and wear resistance, and a method for manufacturing the same.A piston ring manufa...
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JP2022080193A |
To provide a piston and a marine internal combustion engine, which can prevent a situation where the sealing property between an inner peripheral surface of a cylinder and piston rings is deteriorated.A piston comprises: a piston body re...
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JP2022076932A |
To provide a slide mechanism that can exert sufficient low friction in the presence of ester-based lubricant having biodegradability.A slide mechanism (1) includes a slide member (10), a mating material (20) and lubricant (30). The slide...
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JP2022073716A |
To provide a technology capable of suppressing degradation of an oil scraping function, in a combined oil ring in which a main body ring and a coil expander are combined.In a combined oil ring, a part of an inner peripheral surface S2 of...
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JP7068793B2 |
A piston packing fitting jig is used to enable a piston packing (20) to be fit into an annular groove (1g) by: putting the piston packing (20) onto a first-outer-diameter region (100A) of a piston packing insertion jig (100) in a state w...
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JP2022073720A |
To provide a technique capable of suppressing degradation of oil scraping function in a combined oil ring in which a main body ring and coil expanders are combined.A part of an inner peripheral surface S2 of a main body ring 1 forms hold...
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JP2022073743A |
To provide a technique capable of suppressing degradation of an oil scraping function, in a combined oil ring of a main body ring and a coil expander.On a cross-section including a window hole V1 orthogonal to a peripheral length directi...
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JP7068559B1 |
The present invention provides a sliding member coated with a DLC coating, which is less likely to cause minute fracture of the sliding surface due to the growth of cracks and can suppress an increase in elastic wear. The problem is solv...
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JP2022071283A |
To provide a slide mechanism including a slide member with a carbon-containing coating film, having high adsorption performance to a lubricant including a molybdenum extreme pressure additive, and high friction reduction effect by molybd...
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JP7058781B1 |
To provide a method for manufacturing a piston ring provided with a DLC film having excellent heat resistance and excellent adhesion to a substrate. A method for manufacturing a piston ring according to the present disclosure includes th...
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JP7053531B2 |
To provide a technology that can provide a deposition film with preferable adhesion in a surface treatment method for forming a film at an outer peripheral surface of a piston ring with a vapor deposition method that uses a target.A surf...
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JP7053282B2 |
An oil ring 1 has an oil ring body 10 provided with a land 30 protruding diametrally outward, and a coil expander 20 that is mounted on a diametrally inward portion of the oil ring body and that biases the oil ring body diametrally outwa...
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JP7052156B1 |
The combination of piston rings assembled to the piston includes the first compression ring, the second compression ring, the third compression ring and the oil ring, the axial width of the first compression ring is h1 (1), and the secon...
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JP7051500B2 |
To provide an engine component of which a heat insulation layer has high heat insulation property and good heat drawing property.The engine component includes a metal base material, and the heat insulation layer provided on the surface o...
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JP7052157B1 |
The combination of piston rings assembled to the piston includes the first compression ring, the second compression ring, the third compression ring and the oil ring, the axial width of the first compression ring is h1 (1), and the secon...
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JP2022053303A |
To provide an abutment gap estimation device capable of appropriately estimating the size of an abutment of a piston ring.An abutment gap estimation device comprises: an other portion temperature estimation unit for estimating a temperat...
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JP7045383B2 |
Provided is a piston ring to be combined with a low friction cylinder liner, with which it is possible to obtain a friction reducing effect of the low friction cylinder liner even at low rotational speeds when the rotational speed of an ...
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JP7042290B2 |
To provide an inexpensive combinatorial oil ring which can discharge oil between a side rail and a spacer expander sufficiently and quickly to prevent the side rail and the spacer expander from adhering to each other after an engine stop...
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JP7033598B2 |
In a reciprocating compressor in which a rocking piston mechanism is adopted, a lip ring is disposed between an outermost peripheral portion of a rocking piston and a cylinder, or the lip ring is disposed in an outer peripheral portion o...
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JP7021402B1 |
It is an object of the present invention to provide a sliding member coated with a DLC coating, which is less likely to cause minute fracture of the sliding surface due to the growth of cracks and can suppress an increase in elastic wear...
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JP7018988B2 |
Provided are a friction reduced and wear resistant coating, a preparation method thereof and a piston ring. The coating includes an adhesive layer, a transition layer, a gradient layer and a function layer in sequence. The gradient layer...
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JP7019083B2 |
To solve the problem that may occur with deterioration in balance between upper and lower segments when the segments press a bore.A combination oil ring includes: a pair of upper and lower segments; and an expander spacer disposed betwee...
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JP7002401B2 |
A piston ring includes a first ring portion which is fitted onto an outer circumferential portion of a piston and which is capable of sliding relative to an inner wall surface of a cylinder, and a second ring portion which is fitted onto...
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JP2022019618A |
To form an additional groove of a piston easily.The invention relates to an internal combustion engine, in particular, a piston (1) of an internal combustion engine for a motor vehicle. The piston (1) has a ring belt (2) extending along ...
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JP7009238B2 |
This application discloses a reciprocating compressor including: a piston rod extending along a predetermined central axis that crosses an opening formed in an end of a cylinder, the piston rod being coupled to a piston and a crank mecha...
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JP7009515B2 |
An oil scraper piston ring which includes a running face region formed by at least two running face lands, an inner circumferential surface, and upper and lower flank surfaces extending between the running face region and the inner circu...
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JP6993267B2 |
To provide an engine component of which a heat insulation layer has high heat insulation property and good adhesion property to a base material.The engine component includes the metal base material, and the heat insulation layer provided...
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JP6991223B2 |
A piston ring is made from a copper-containing alloy. This material permits the top compression ring of a piston to be moved closer to the piston crown, reducing crevice volume and reducing the tendency for pre-ignition. Ignition timing ...
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JP2022003167A |
To provide a mechanical part that is provided with an amorphous carbon coating (at least 70 mass% of carbon, excluding hydrogen), and is used to interact slidingly with an opposite part having a surface hardness which is not more than tw...
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JP2021193287A |
To efficiently suppress the abutment matching of a piston ring attached to a piston, and to efficiently suppress partial wear, in the piston of an internal combustion engine.This invention relates to a piston of an internal combustion en...
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JP6986107B2 |
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JP6985961B2 |
To provide a piston ring having a thermal spray coating formed thereon with favorable adhesion, the thermal spray coating being excellent in wear resistance, scuffing resistance, and initial running-in property, and having low aggressive...
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JP6967209B2 |
The present invention provides a manufacturing method for a piston ring, which comprises the following steps of: placing a piston ring inside a physical deposition apparatus; introducing inert gas thereinto; feeding reactive gas containi...
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JP6963576B2 |
To provide a cast iron member having improved corrosion resistance to corrosion such as sulfuric acid occurring in an EGR system.A cast iron member contains carbon of 2.9 mass%-3.7 mass%, silicon of 1.8 mass%-2.8 mass%, manganese of 0.5 ...
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JP6962998B2 |
A combination of a cylinder and a piston ring with which the amount of wear of a hard carbon coating forming an outer peripheral surface of the piston ring is reduced according to the hardness of an inner peripheral surface of the cylind...
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JPWO2021075326A1 |
An object of the present invention is to provide a compression ring having good thermal conductivity that can maintain tension even in a thermal environment. A compression ring used by being mounted on a piston for an internal combustion...
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JP6957280B2 |
In order to provide a spacer expander for a combined oil control ring with which an excellent oil control function can be maintained without generating adhesion between the spacer expander and a side rail even when an engine is operated ...
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JP2021173292A |
To provide a foreign object removal seal ring which enables improvement of foreign object removal effect.A communication groove 220 which allows a first area R1 and a third area R3 to communicate with each other is provided on an outer p...
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JP2021162153A |
To provide a piston ring package 100 for a piston 20 of a reciprocating internal combustion engine, a piston with such a piston ring package, and a reciprocating internal combustion engine with such a piston 20, which realize a sufficien...
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JP2021162015A |
To provide a piston ring 100.The piston ring 100 comprises a ring section 1 and a lock section 2 with a male locking end 3 and a female locking end 4. The male locking end 3 comprises a tongue 5, and the female locking end 4 comprises a ...
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JP2021152396A |
To provide a piston ring for a vehicular shock absorber that less likely causes the leakage of oil between an outer peripheral surface of a piston and an inner peripheral surface of the piston ring, and can suppress the lowering of atten...
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