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    Uniflow scavenging two-cycle engine
    2.
    发明授权
    Uniflow scavenging two-cycle engine 有权

    公开(公告)号：US10371042B2

    公开(公告)日：2019-08-06

    申请号：US15450227

    申请日：2017-03-06

    Applicant: IHI Corporation

    Inventor： Yutaka Masuda ,  Takahiro Kuge ,  Takayuki Yamada ,  Takeshi Yamada ,  Jun Teramoto

    IPC: F02B25/04 ,  F02B43/02 ,  F02B75/04 ,  F02B23/10 ,  F02D15/02 ,  F02B31/00 ,  F02D19/10

    Abstract: A uniflow scavenging two-cycle engine includes an scavenging port having a swirling guide portion that guides scavenging gas into a cylinder in a direction inclined with respect to a radial direction of the cylinder, and a center guide portion that is provided to be closer to a crank side of the cylinder than the swirling guide portion and guides the scavenging gas further toward the center side of the cylinder than the swirling guide portion. At least a part of the center guide portion faces a piston when the piston is positioned at bottom dead center during the high compression ratio mode, and the center guide portion and the piston do not face each other or an area of facing the piston is smaller than that during the high compression ratio mode when the piston is positioned at bottom dead center during the low compression ratio mode.

    Two-cycle engine and method for lubricating two-cycle engine
    4.
    发明授权
    Two-cycle engine and method for lubricating two-cycle engine 有权
    双循环发动机和润滑双循环发动机的方法

    公开(公告)号：US09476353B2

    公开(公告)日：2016-10-25

    申请号：US14245344

    申请日：2014-04-04

    Applicant: IHI Corporation

    Inventor： Yoshiyuki Saito ,  Takeshi Yamada ,  Yoshiyuki Umemoto

    IPC: F01M3/04 ,  F02B75/02 ,  F01M1/08 ,  F16N29/02 ,  F01M1/14 ,  F01M11/02

    CPC classification number: F02B75/02 ,  F01M1/08 ,  F01M1/14 ,  F01M2011/022 ,  F02B2075/025 ,  F02B2700/03 ,  F16N29/02

    Abstract: The two-cycle engine includes a piston capable of reciprocating along a cylinder, the piston being provided with piston rings; and a lubrication port provided in the cylinder, the lubrication port being used to supply a lubricant to a sliding surface of the cylinder on which the piston rings slide. Inter-ring spaces are provided, each inter-ring space being between adjacent piston rings. In addition, the two-cycle engine includes a controller used to adjust a lubrication period of lubricating from the lubrication port during movement of the piston toward a top dead center thereof, so that a period before an uppermost inter-ring space passing by the lubrication port is excluded from the lubrication period and a period in which at least part of a lowermost inter-ring space faces the lubrication port is included in the lubrication period.

    Abstract translation: 双冲程发动机包括能够沿着气缸往复移动的活塞，活塞设有活塞环; 以及设置在所述气缸中的润滑口，所述润滑口用于向所述活塞环滑动的所述气缸的滑动面供给润滑剂。 提供了环间空间，每个环间空间位于相邻的活塞环之间。 此外，双冲程发动机包括用于在活塞向其上止点移动期间调节润滑口的润滑润滑时间的控制器，使得经过润滑的最上面的环间空间 在润滑期间不包括端口，并且在润滑期间包括至少部分最下面的环形空间面向润滑口的时段。

    UNIFLOW SCAVENGING 2-CYCLE ENGINE
    5.
    发明申请
    UNIFLOW SCAVENGING 2-CYCLE ENGINE 审中-公开
    共同扫描2循环发动机

    公开(公告)号：US20150260115A1

    公开(公告)日：2015-09-17

    申请号：US14431552

    申请日：2013-10-03

    Applicant: IHI CORPORATION

    Inventor： Yutaka Masuda ,  Takayuki Yamada ,  Takayuki Hirose ,  Takahiro Kuge ,  Takeshi Yamada

    IPC: F02D41/00 ,  F02M21/02 ,  F02B75/02 ,  F02B25/04

    CPC classification number: F02D41/0077 ,  F02B25/04 ,  F02B75/02 ,  F02B2075/025 ,  F02D13/0284 ,  F02D19/0692 ,  F02D19/10 ,  F02D41/0027 ,  F02D41/1459 ,  F02D41/3047 ,  F02D2041/001 ,  F02D2400/04 ,  F02M21/0275 ,  F02M21/0284 ,  Y02T10/18 ,  Y02T10/32 ,  Y02T10/36

    Abstract: A uniflow scavenging 2-cycle engine includes a cylinder; a piston sliding in the cylinder; scavenging ports formed in an inner circumferential surface of one end of the cylinder in a piston stroke direction and suctioning an active gas into the combustion chamber according to the piston sliding motion; fuel injection valves inject a fuel gas into the active gas suctioned into the combustion chamber; and an exhaust port formed in the other end of the cylinder. An exhaust valve driving mechanism opens and closes exhaust valves such that a time required to displace an exhaust valve from a fully opened position to a fully closed position is longer than that required to displace the exhaust valve from the fully closed position to the fully opened position. With this constitution, an injection start timing of the fuel gas can be advanced while blow-by of the fuel gas is suppressed.

    Abstract translation: 单流清扫2循环发动机包括气缸; 活塞在气缸中滑动; 清扫口形成在气缸的一端的内周面上沿活塞行程方向，并且根据活塞滑动运动将活性气体吸入燃烧室; 燃料喷射阀将燃料气体注入到被吸入到燃烧室中的活性气体中; 以及形成在气缸的另一端的排气口。 排气门驱动机构打开和关闭排气门，使得将排气阀从完全打开位置移动到完全关闭位置所需的时间比将排气阀从完全关闭位置移动到完全打开位置所需的时间长 。 利用这种构造，可以抑制燃料气体的窜气，可以提高燃料气体的喷射开始正时。

    Engine
    6.
    发明授权
    Engine 有权

    公开(公告)号：US10087831B2

    公开(公告)日：2018-10-02

    申请号：US15209219

    申请日：2016-07-13

    Applicant: IHI Corporation

    Inventor： Takeshi Yamada ,  Yoshiyuki Umemoto ,  Machiko Kobayashi

    IPC: F02B75/04 ,  F04B19/22 ,  F15B11/08

    Abstract: Provided is an engine that includes a first member, a second member, a first hydraulic pressure chamber formed between facing parts of the first and second members, and a hydraulic pressure adjustment mechanism. The hydraulic pressure adjustment mechanism has a plunger pump having a pump cylinder and a plunger and configured to supply hydraulic oil in the pump cylinder to the first hydraulic pressure chamber by pushing the plunger into the pump cylinder. The plunger pump moves in a stroke direction along with a piston and a power transmission section, and the plunger is pushed into the pump cylinder by receiving a reaction force opposite to reciprocating forces of the piston and the power transmission section.

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