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公开(公告)号：US11359574B1
公开(公告)日：2022-06-14
申请号：US17454095
申请日：2021-11-09
Applicant: Mazda Motor Corporation
Inventor： Yohei Suzuki , Yasushi Nakahara , Tsuyoshi Yamamoto
Abstract: A cylinder head of a multi-cylinder engine is provided, the cylinder head including a plurality of ceiling parts for respective cylinders, and a water jacket. Each ceiling part is connected to an intake port including a primary port and a secondary port aligned in a cylinder-row direction, and is attached with an in-cylinder pressure sensor. A plug is attached to a hollow part of the cylinder head corresponding to a core print provided to a core of the water jacket, and is disposed at a position corresponding to a location between certain cylinders. The in-cylinder pressure sensor is attached at a position on an opposite side from the plug with respect to a cylinder center axis in the cylinder-row direction. Positions of the primary and secondary ports connected to each ceiling part are interchanged in the cylinder-row direction according to the position of the in-cylinder pressure sensor.
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公开(公告)号：US20160281633A1
公开(公告)日：2016-09-29
申请号：US15074034
申请日：2016-03-18
Applicant: Mazda Motor Corporation
Inventor： Yasushi Nakahara , Yoshitaka Wada , Yohei Suzuki , Yuki Nabetani
CPC classification number: F02F1/4235 , F02B23/105 , F02B31/085 , F02B37/00 , F02B2023/106 , F02B2075/125 , F02B2275/48 , Y02T10/123 , Y02T10/125 , Y02T10/144 , Y02T10/146
Abstract: An intake device of an engine having cylinders is provided. The intake device includes a cylinder head formed with two intake ports per cylinder, and a forced induction system. One of the two intake ports is designed to have a smaller passage cross-sectional area at a throat portion thereof than that of the other intake port, and to cause a strength of a tumble flow strength of intake air formed within a combustion chamber to be stronger when a flow of the intake air into the combustion chamber is assumed to be caused only from the one of the two intake ports, than only from the other intake port. A tumble ratio of the intake air flow within the combustion chamber is a predetermined value or greater when the intake air is forcibly induced and flows into the combustion chamber from the two intake ports.
Abstract translation: 提供具有气缸的发动机的进气装置。 进气装置包括：每缸气缸形成有两个进气口的气缸盖，以及强制感应系统。 两个进气口中的一个被设计成在其喉部处具有比其他进气口更小的通道横截面面积，并且使得形成在燃烧室内的进气的滚筒流动强度的强度为 假设进入燃烧室的进气的流动仅仅来自两个进气口中的一个而不是仅从另一个进气口引起的情况更强。 当进气被强制诱导并从两个进气口流入燃烧室时，燃烧室内的进气流量的转速为预定值或更大。
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Patent Agency Ranking
公开(公告)号：US20220186678A1
公开(公告)日：2022-06-16
申请号：US17454095
申请日：2021-11-09
Applicant: Mazda Motor Corporation
Inventor： Yohei Suzuki , Yasushi Nakahara , Tsuyoshi Yamamoto
Abstract: A cylinder head of a multi-cylinder engine is provided, the cylinder head including a plurality of ceiling parts for respective cylinders, and a water jacket. Each ceiling part is connected to an intake port including a primary port and a secondary port aligned in a cylinder-row direction, and is attached with an in-cylinder pressure sensor. A plug is attached to a hollow part of the cylinder head corresponding to a core print provided to a core of the water jacket, and is disposed at a position corresponding to a location between certain cylinders. The in-cylinder pressure sensor is attached at a position on an opposite side from the plug with respect to a cylinder center axis in the cylinder-row direction. Positions of the primary and secondary ports connected to each ceiling part are interchanged in the cylinder-row direction according to the position of the in-cylinder pressure sensor.
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公开(公告)号：US10767551B2
公开(公告)日：2020-09-08
申请号：US16478880
申请日：2017-03-03
Applicant: MAZDA MOTOR CORPORATION
Inventor： Yasushi Nakahara , Yohei Suzuki , Tsuyoshi Yamamoto , Michiharu Kawano , Yuya Honda , Kento Onishi
Abstract: In an engine (1), when an intake valve (16) opens, a downstream end portion (61) of a first intake port (6) extends to direct to between a shade back (162a) positioned on a cylinder axis (C) side with respect to a valve stem (161) and a ceiling surface (51) facing the shade back (162a). As viewed in a section perpendicular to a direction perpendicular to an intake air flow direction, a second intake port side inner wall surface (61a) at the downstream end portion (61) of the first intake port (6) curves apart from a second intake port (7) in a direction from an exhaust side to an intake side as compared to the shape of an opposite second intake port side inner wall surface (61b) mirror-reversed to a second intake port (7) side.
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公开(公告)号：US10100685B2
公开(公告)日：2018-10-16
申请号：US15107835
申请日：2014-12-12
Applicant: MAZDA MOTOR CORPORATION
Inventor： Toshiaki Nishimoto , Yasushi Nakahara , Hiroshi Takahashi , Yohei Suzuki
IPC: F01L1/24 , F01M1/02 , F01M1/06 , F01M9/10 , F02D13/06 , F01L1/18 , F02D17/02 , F01L1/46 , F01L13/00 , F01L1/053 , F01L1/344
Abstract: A hydraulic supply device for a valve stopping mechanism includes: a specific hydraulic oil supply passage which constantly supplies hydraulic oil, a valve stopping mechanism incorporated in a cylinder head, and configured to stop at least one of an intake valve and an exhaust valve, a valve stopping oil passage which supplies hydraulic oil to the valve stopping mechanism, a control valve which controls the supply of hydraulic oil to the valve stopping oil passage, and a communication oil passage which communicates between the valve stopping oil passage and the specific hydraulic oil supply passage, and provided with a restrictor therebetween. The specific hydraulic oil supply passage is connected to an oil supply portion for a portion to be lubricated or for a portion to be cooled in the engine at a position downstream of a connection position with respect to the communication oil passage in an oil supply direction.
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公开(公告)号：US09797336B2
公开(公告)日：2017-10-24
申请号：US15074034
申请日：2016-03-18
Applicant: Mazda Motor Corporation
Inventor： Yasushi Nakahara , Yoshitaka Wada , Yohei Suzuki , Yuki Nabetani
CPC classification number: F02F1/4235 , F02B23/105 , F02B31/085 , F02B37/00 , F02B2023/106 , F02B2075/125 , F02B2275/48 , Y02T10/123 , Y02T10/125 , Y02T10/144 , Y02T10/146
Abstract: An intake device of an engine having cylinders is provided. The intake device includes a cylinder head formed with two intake ports per cylinder, and a forced induction system. One of the two intake ports is designed to have a smaller passage cross-sectional area at a throat portion thereof than that of the other intake port, and to cause a strength of a tumble flow strength of intake air formed within a combustion chamber to be stronger when a flow of the intake air into the combustion chamber is assumed to be caused only from the one of the two intake ports, than only from the other intake port. A tumble ratio of the intake air flow within the combustion chamber is a predetermined value or greater when the intake air is forcibly induced and flows into the combustion chamber from the two intake ports.
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公开(公告)号：US10815872B2
公开(公告)日：2020-10-27
申请号：US16478881
申请日：2017-03-03
Applicant: MAZDA MOTOR CORPORATION
Inventor： Yasushi Nakahara , Yohei Suzuki , Tsuyoshi Yamamoto , Michiharu Kawano , Yuya Honda , Kento Onishi
Abstract: In an engine (1), an ignition plug (22) is arranged between a first intake port (6) and a second intake port (7). In a case where a downstream end portion (71) of the second intake port (7) is divided into a first intake port (6) side and an opposite first intake port (6) side, an inner wall surface (71a) of an opposite first intake port (6) side portion extends in a direction toward the first intake port (6) as extending from an upstream side to a downstream side of the second intake port (7).
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