Patents by Inventor Xiyao Ge
Xiyao Ge has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11306650Abstract: 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 device configured to inject water into the combustion chamber through a plurality of nozzle holes facing the inside of the combustion chamber. The piston has a cavity in an upper surface thereof. The water injection device injects water into the cavity in a compression stroke at a timing when an extension of axes of at least some of the nozzle holes intersects the cavity. The cavity has a bottom part where the water injected by the water injection device collides, and a raising part configured to raise the water spreading along the bottom part toward the water injection device.Type: GrantFiled: June 30, 2020Date of Patent: April 19, 2022Assignee: Mazda Motor CorporationInventors: Takeshi Nagasawa, Xiyao Ge, Akira Kageyama, Hiroyasu Uchida, Ryo Kiyosue
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Patent number: 11286850Abstract: A combustion chamber structure for an engine includes a combustion chamber that is defined by a cylinder block, a cylinder head, and a piston. The cylinder head includes: a head body that has a lower surface opposing the combustion chamber; and a coat layer that covers the lower surface. The coat layer includes: a heat-insulating layer that is arranged in a region, which opposes a cavity, in the lower surface and has a lower thermal conductivity than the head body; a heat-shielding layer that is arranged to cover the lower surface and has a lower thermal conductivity than the head body and the heat-insulating layer; and a heat diffusion layer that is arranged between the heat-insulating layer and the heat-shielding layer and has a higher thermal conductivity. The heat diffusion layer includes a side end edge and an extending portion, each of which abuts the head body.Type: GrantFiled: March 18, 2021Date of Patent: March 29, 2022Assignee: Mazda Motor CorporationInventors: Yoshihisa Nou, Osamu Aoki, Yuji Harada, Kenji Uchida, Xiyao Ge
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Publication number: 20210332750Abstract: A combustion chamber is defined by a cylinder block, a cylinder head, and a piston. The cylinder block includes a block body that has a cylinder inner wall covered by a coat layer. The coat layer includes: a heat-shielding layer that covers an upper end of the cylinder inner wall, a piston ring not slidingly contacting the upper end; a heat-insulating layer arranged on a back side of the heat-shielding layer; and a heat diffusion layer arranged between the heat-insulating layer and the heat-shielding layer. Regarding thermal conductivity, the heat-insulating layer is lower than the block body, the heat-shielding layer is lower than the block body and the heat-insulating layer, and the heat diffusion layer is higher than the heat-insulating layer and the heat-shielding layer. The heat diffusion layer includes a side end edge and an extending portion, each of which abuts the block body.Type: ApplicationFiled: March 19, 2021Publication date: October 28, 2021Inventors: Yoshihisa Nou, Osamu Aoki, Yuji Harada, Kenji Uchida, Xiyao Ge
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Publication number: 20210332749Abstract: A combustion chamber structure for an engine includes a combustion chamber that is defined by a cylinder block, a cylinder head, and a piston. The cylinder head includes: a head body that has a lower surface opposing the combustion chamber; and a coat layer that covers the lower surface. The coat layer includes: a heat-insulating layer that is arranged in a region, which opposes a cavity, in the lower surface and has a lower thermal conductivity than the head body; a heat-shielding layer that is arranged to cover the lower surface and has a lower thermal conductivity than the head body and the heat-insulating layer; and a heat diffusion layer that is arranged between the heat-insulating layer and the heat-shielding layer and has a higher thermal conductivity. The heat diffusion layer includes a side end edge and an extending portion, each of which abuts the head body.Type: ApplicationFiled: March 18, 2021Publication date: October 28, 2021Inventors: Yoshihisa Nou, Osamu Aoki, Yuji Harada, Kenji Uchida, Xiyao Ge
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Publication number: 20210310401Abstract: A combustion-chamber structure of an engine comprises a combustion chamber which is partitioned by a cylinder block, a cylinder head, a piston, an intake valve, and an exhaust valve. The intake valve (exhaust valve) comprises an intake valve body including an umbrella part having a valve head and a valve face, a heat-insulation layer provided at the valve head and having smaller heat conductivity than the valve body, a heat-barrier layer provided to cover the valve head with the heat-insulation layer and having smaller heat conductivity than the valve body and the heat-insulation layer, and a heat-diffusion layer provided between the heat-insulation layer and the heat-barrier layer and having larger heat conductivity than the heat-insulation layer and the heat-barrier layer. The heat-diffusion layer comprises a contact portion which contacts with the cylinder head when the intake valve is closed.Type: ApplicationFiled: December 30, 2020Publication date: October 7, 2021Applicant: MAZDA MOTOR CORPORATIONInventors: Yoshihisa NOU, Osamu AOKI, Yuji HARADA, Kenji UCHIDA, Xiyao GE
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Patent number: 11078866Abstract: A combustion-chamber structure of an engine comprises a combustion chamber which 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, in a radial direction, of the upper surface and having smaller heat conductivity than the piston body, a heat-barrier layer provided to cover the upper surface and having smaller heat conductivity than the piston body and the heat-insulation layer, and a heat-diffusion layer provided between the heat-insulation layer and the heat-barrier layer and having larger heat conductivity than the heat-insulation layer and the heat-barrier layer. The heat-diffusion layer comprises a side end edge and an extension portion which contact with the piston body.Type: GrantFiled: December 30, 2020Date of Patent: August 3, 2021Assignee: MAZDA MOTOR CORPORATIONInventors: Yoshihisa Nou, Osamu Aoki, Yuji Harada, Kenji Uchida, Xiyao Ge
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Publication number: 20210010413Abstract: 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 device configured to inject water into the combustion chamber through a plurality of nozzle holes facing the inside of the combustion chamber. The piston has a cavity in an upper surface thereof. The water injection device injects water into the cavity in a compression stroke at a timing when an extension of axes of at least some of the nozzle holes intersects the cavity. The cavity has a bottom part where the water injected by the water injection device collides, and a raising part configured to raise the water spreading along the bottom part toward the water injection device.Type: ApplicationFiled: June 30, 2020Publication date: January 14, 2021Inventors: Takeshi Nagasawa, Xiyao Ge, Akira Kageyama, Hiroyasu Uchida, Ryo Kiyosue