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JP2019035413A |
To provide an oil gallery of a forged steel piston that increases cooling effects, and a method of forming the same.The present invention relates to a steel piston 100 with an oil gallery 105, and a process for forming an oil gallery cha...
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JP6476817B2 |
A piston for an internal combustion engine includes a piston main body for the internal combustion engine, and a crosshatched groove being formed on a surface of the piston main body. The crosshatched groove includes a crosshatch angle t...
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JP6468451B2 |
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JP6468450B2 |
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JP6471144B2 |
A method for producing a piston for an internal combustion engine may include the steps of: producing a first blank corresponding to a piston main body via a deformation process; producing a second blank corresponding to a piston ring pa...
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JP6466510B2 |
A piston and method of construction is provided. The piston includes a top part fixed to a bottom part. The top part has an uppermost surface with annular inner and outer upper joining surfaces depending therefrom. The bottom part has a ...
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JP6465086B2 |
A pore sealing treatment is performed in order to enhance the heat-shielding property of an anode oxide film by blocking at least the openings of open pores. In the first step of the pore sealing treatment, a non-solvent-typed pore seali...
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JP6465129B2 |
A projecting-shape portion 31S projecting toward a first sliding surface 2A in a section along a sliding direction of a second sliding surface 31S is provided on the second sliding surface 31S which slides relative to the first sliding s...
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JP2019502867A |
A coating for reducing or preventing high temperature gas oxidation of a piston in an internal combustion engine is disclosed. The coating comprises a polysilazane-based polymer.
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JP2019015288A |
To overcome disadvantages in relation to a so-called "zero gap".The present invention relates to a method for manufacturing a piston (1). The method includes: a step of manufacturing piston upper and lower parts (2, 3) each of which has ...
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JP2019502856A |
A gallery-free steel piston for an internal combustion engine is provided. The piston has an integrated piston body. This integrated piston body comprises an upper wall that forms an upper combustion surface that includes a first portion...
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JP6461954B2 |
An insert part for a cast piston of an internal combustion engine may include a powder, such as a sintered powder material, containing at least iron or alloys thereof, and having a capacity for being infiltrated. The powder may contain p...
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JP2019007438A |
To provide a lubrication structure of a piston support part capable of preventing seizure between a piston, a piston pin and a connecting rod.A lubrication structure of a piston support part slidably supports a piston 2 at a small end pa...
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JP6452052B2 |
A three section steel piston for two-stroke engines is provided. The piston is provided with an upper section, a middle section and a lower section. Piston ring grooves are formed into the upper and lower sections, and pin bosses with op...
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JP6451581B2 |
To form a heat insulation layer on a squish area surface on a top face of a piston body and to curb damage and pealing of the heat insulation layer by preventing generation of a large crack.A heat insulation layer 22 on a squish area sur...
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JP6451318B2 |
A piston for a diesel internal combustion engine including a crown portion at least partially formed of steel and having a combustion surface with a combustion bowl formed therein is provided. The combustion bowl presents a combustion bo...
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JP6451485B2 |
A crosshead of this crosshead engine includes a crosshead bearing provided at the second end of the connecting rod, a crosshead pin (114a) pivotally supported by the crosshead bearing, a hydraulic chamber (a first hydraulic chamber (168a...
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JP6450911B2 |
A piston and method of construction are provided. The piston has a piston body with an insert forming at least a portion of an upper combustion surface. The piston body is constructed from a first material having a first thermal conducti...
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JP6451775B2 |
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JP2019002406A |
To provide a large reciprocating piston combustion engine in which control of a variable compression ratio requires little or no external space.A large reciprocating piston combustion engine has: at least one cylinder having a cylinder b...
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JP6449278B2 |
The invention relates to a piston (10) for an internal combustion engine, comprising a piston crown (22), a cylindrical piston head (11), which adjoins the piston crown (22), and an at least partially hollow piston skirt (40), which is f...
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JP2018204545A |
To provide an internal combustion engine capable of reducing the generation amount of soot at the time of combustion, by promoting the mixture of fuel and air in a combustion chamber.An internal combustion engine which is composed of a c...
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JP6442778B2 |
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JP6443759B2 |
A resin coat film 39 formed on a skirt portion 10 of a piston 7 has a four-sided outer peripheral region knurled at upper and lower regions thereof corresponding in a rear view of the piston 7 to an upper skirt part 36 and a lower skirt ...
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JP6445224B2 |
A piston for an internal combustion engine may include two pin bosses configured to receive a gudgeon pin. The two pin bosses may respectively include a nadir pocket of at least two nadir pockets at α=180° and extending outward from a ...
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JP2018197539A |
To provide a piston of an internal combustion engine which can suppress the deformation of a piston head.A piston of an internal combustion engine has a piston head, a pair of piston pin boss parts, a pair of skirt parts, and four apron ...
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JP6436149B2 |
To provide structure of an engine combustion chamber, allowing for reduction in cooling loss the of the engine combustion chamber.The structure of an engine combustion chamber comprises: a combustion chamber constituent member having a c...
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JP6434735B2 |
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JP6430135B2 |
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JP2018184852A |
To provide a piston that is suitable for staple production and includes a heat insulation layer that is excellent in adiabaticity, thermal responsiveness and adhesion.A piston includes a heat insulation layer, where a joint layer is form...
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JP2018184860A |
To provide a novel piston of an internal combustion engine which makes compatible both the improvement of heat efficiency and the reduction of an exhaust gas harmful component, and can suppress the occurrence of abnormal combustion such ...
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JP6424851B2 |
To suppress the deterioration of a heat insulation film resulting from a temperature difference between a film surface and a film inner part, in an internal combustion engine in which the heat insulation film which is low in both a heat ...
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JP2018178848A |
To provide a piston of an internal combustion engine that can improve bondability between a wear-resistant ring and a piston body part.A piston of an internal combustion engine comprises a piston body part, a wear-resistant ring, and an ...
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JP2018178857A |
To reduce cooling loss after warming-up completion and improve a combustion effect, as well as accelerate warming-up during engine warming-up.A piston reciprocating inside a cylinder of an engine has: a plurality of first fuel injection ...
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JP2018177928A |
To provide a slide member which has a smooth surface having an uneven structure and has high productivity.A smooth slide member contains a slide member which is formed of metal and has an uneven structure thereon, and a smooth coat layer...
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JP6417400B2 |
A sliding engine component may include a sliding surface including a plastics polymer-based composite layer disposed on a substrate. The composite layer may include a matrix of plastics polymer-based material. The plastics polymer-based ...
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JP2018165567A |
To provide a piston capable of reducing the amount of oil infiltrating from a crankcase side into cylinder bore upper end and piston combustion chamber side space.A piston 1 comprises: a piston body 11 with a piston head; ring grooves 12...
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JP6413019B2 |
A spring retainer includes a locking member which locks one end side of the piston spring, and a rod-shaped member (82) of which one end is in contact with the locking member to restrict a length of the piston spring and the other end is...
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JP6412119B2 |
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JP6412139B2 |
A piston assembly having a piston member and a connecting rod. The piston member has a crown portion and a lower portion bonded together with a cooling gallery formed between them. The connecting rod has a ball end which is positioned in...
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JP6405352B2 |
A piston of an internal combustion engine includes a crown surface, a first cavity, and a second cavity. The crown surface forms an internal wall surface of a combustion chamber. The first cavity is a depression provided in the crown sur...
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JP6403071B2 |
In a fluid pressure cylinder, a piston unit, which is displaced along an axial direction under the supply of a pressure fluid, is disposed in the interior of a cylinder tube of the fluid pressure cylinder. The piston unit includes a disk...
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JP6404470B2 |
A cooling channel cover for a piston of an internal combustion engine may include a body having mutually opposite end faces. At least one supply element for a coolant may be received in an opening disposed in the cooling channel cover. T...
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JP6401188B2 |
A steel piston with an oil gallery, and process for forming a steel piston oil gallery channel, which corresponds to the complex shape of the combustion bowl in the piston crown. The piston crown is made by a cast metal or powder metal f...
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JP6401104B2 |
There is provided a piston for an engine capable of improving supply of engine oil to a recess based on further study of a piston on which a resin coating film is formed. A piston for an engine includes a skirt part 1, and a resin coatin...
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JP6394485B2 |
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JP6397637B2 |
Provided is a double-layer-coated aluminum base material which is suitable for use as members such as engine members that are required to have heat-insulating performance and which has sufficient heat-insulating performance, and in which...
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JP6396521B2 |
A piston with a piston body extending along a longitudinal central axis and having a crown portion and a pair of pin bosses is provided. The crown portion includes a combustion wall with a combustion bowl formed therein and a pair of rib...
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JP2018145861A |
To dramatically increase reliability relating to seizure prevention of a piston more than before by optimizing a lubricant quantity to a slide surface of the piston.In a piston structure, a longitudinal section profile with a barrel shap...
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JP6388839B2 |
A piston and method of construction is provided. The piston includes a top part fixed to a bottom part. The top part has an uppermost surface with annular inner and outer upper joining surfaces depending therefrom. The bottom part has a ...
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