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    • 4. 发明公开
    • Internal combustion engine
    • Brennkraftmaschine
    • EP0884455A2
    • 1998-12-16
    • EP98117453.5
    • 1992-12-01
    • RYOBI NORTH AMERICA, INC.
    • Everts, Robert G.Kurihara, Katsumi
    • F01M9/06F01M1/04
    • F01M11/06F01M1/04F01M9/06F01M9/10F01M11/065F01M13/0405F02B63/02F02B2075/025F02B2075/027F02B2275/34
    • A small four-cycle aluminium internal combustion engine (30) comprises a crankshaft (36), which is journaled to the engine block for rotation about a crankshaft axis. A piston (38) reciprocates within the bore (34) and is connected to the crankshaft by a connecting rod (40) having oil splasher (60) formed thereon for intermittently engaging the oil within the enclosed oil reservoir (58) to splash lubricate the engine. The engine (30) is provided with a cylinder head (42) assembly defining a compact combustion chamber (44) having a pair of overhead intake exhaust ports (46, 52) cooperating intake and exhaust valves (50, 56). A lightweight high powered engine (30) is thereby provided having relatively low HC and CO emissions.
    • 一个小型四冲程铝内燃机(30)包括一个曲轴(36),该曲轴(36)被轴颈连接到发动机缸体上,用于围绕曲轴轴线旋转。 活塞(38)在孔(34)内往复运动,并通过连接杆(40)连接到曲轴上,该连杆具有形成在其上的油分离器(60),以间歇地接合封闭油箱(58)内的油,以使润滑 发动机。 发动机(30)设置有气缸盖(42)组件,其限定具有协同进气门和排气门(50,56)的一对顶置进气排气口(46,52)的紧凑型燃烧室(44)。 因此,提供了具有相对低的HC和CO排放的轻质高功率发动机(30)。
    • 5. 发明公开
    • Operator carried power tool having a four-cycle engine
    • Handmaschinenwerkzeug mit einer Viertaktbrennkraftmaschine
    • EP0845197A1
    • 1998-06-03
    • EP97122462.1
    • 1992-12-01
    • RYOBI NORTH AMERICA, INC.
    • Everts, Robert G.
    • A01D1/00F01M1/04F01M9/10F01M11/06F02B63/02
    • F01M11/06F01M1/04F01M9/06F01M9/10F01M11/065F01M13/0405F02B63/02F02B2075/025F02B2075/027F02B2275/34
    • A handheld powered tool (20) is provided which is intended to be carried by an operator during use. The power tool (20) has a frame (22), including a handle (24, 26) to be grasped by the operator, an implement (32) affixed to the frame (22) having a rotary input member (64) and a small four-cycle aluminium internal combustion engine (30) attached to the frame for driving the implement. A crankshaft (36) is journaled to the engine block for rotation about a crankshaft axis. A piston (38) reciprocates within the bore (34) and is connected to the crankshaft by a connecting rod (40) having oil splasher (60) formed thereon for intermittently engaging the oil within the enclosed oil reservoir (58) to splash lubricate the engine. The engine (30) is provided with a cylinder head (42) assembly defining a compact combustion chamber (44) having a pair of overhead intake exhaust ports (46, 52) cooperating intake and exhaust valves (50, 56). A lightweight high powered engine (30) is thereby provided having relatively low HC and CO emissions.
    • 提供了一种手持式动力工具(20),其意图在使用期间由操作者携带。 电动工具(20)具有框架(22),其包括由操作者抓握的手柄(24,26),固定到框架(22)的具有旋转输入构件(64)的工具(32)和 小型四冲程铝内燃机(30),其连接到用于驱动工具的框架上。 曲轴(36)被轴颈连接到发动机缸体,用于围绕曲轴轴线旋转。 活塞(38)在孔(34)内往复运动,并通过连接杆(40)连接到曲轴上,该连杆具有形成在其上的油分离器(60),以间歇地接合封闭油箱(58)内的油,以使润滑 发动机。 发动机(30)设置有气缸盖(42)组件,其限定具有协同进气门和排气门(50,56)的一对顶置进气排气口(46,52)的紧凑型燃烧室(44)。 因此,提供了具有相对低的HC和CO排放的轻质高功率发动机(30)。