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    • 7. 发明公开
    • ADJUSTMENT OF IGNITION TIMING AT CUTOUT
    • EINSTELLUNG DESZÜNDZEITPUNKTESBEI EINER AUSSCHNEIDUNG
    • EP3044456A4
    • 2017-01-11
    • EP14902481
    • 2014-09-22
    • HUSQVARNA AB
    • ASSARGÅRD JOHANSUNDKVIST RICKYWIXE STEFANAXELSSON MARTIN
    • F02P9/00F02D17/02F02D37/02F02D41/14F02D41/22F02P5/06
    • F02P9/005F02B25/00F02B25/16F02B63/02F02B2075/025F02D41/1497F02D41/22F02D2400/06F02M17/04F02P5/145F02P5/1502Y02T10/46
    • An internal combustion engine (1) may include a combustion chamber (41) into which a mixture (40) of fuel and air is supplied, a spark plug (50) disposed proximate to the combustion chamber (41) to ignite the mixture (40) by generating a spark such that ignition of the mixture drives a piston (6) operably coupled to a crank portion (12) of the engine (1), a speed sensor (102) configured to determine engine speed, and an electronic control unit (100) configured to control operation of the spark plug (50). The electronic control unit (100) may be configured to initiate a speed limitation operation in response to engine speed reaching a cut out speed threshold and to control ignition timing within an operating band (320) of ignition angles prior to engine speed reaching the cut out speed threshold. The speed limitation operation may include skipping application of sparks. The electronic control unit (100) is further configured to apply a changed ignition angle (330) relative to the operating band (320) for first at least one spark initiated after the speed limitation operation.
    • 内燃机(1)可以包括燃料室(41),燃料和空气的混合物(40)被供应到燃烧室中,靠近燃烧室设置的火花塞(50)以点燃混合物(40) ),使得混合物的点火驱动可操作地联接到发动机(1)的曲柄部分(12)的活塞(6),配置成确定发动机转速的速度传感器(102)和电子控制单元 (100),其被配置为控制所述火花塞(50)的操作。 电子控制单元(100)可以被配置为响应于发动机速度达到切断速度阈值而启动速度限制操作,并且在发动机速度达到切断之前控制点火角度的工作频带(320)内的点火正时 速度阈值。 速度限制操作可以包括跳过火花的应用。 电子控制单元(100)还被配置为相对于工作带(320)施加改变的点火角(330),用于在速度限制操作之后首先启动至少一个火花。
    • 10. 发明公开
    • Two-cycle engine
    • Zweitaktmotor
    • EP2463495A3
    • 2016-10-05
    • EP11193175.4
    • 2011-12-13
    • Yamabiko Corporation
    • Shirai, KenYamazaki, TakahiroKoga, NaokiYamaguchi, Kazumichi
    • F02B25/02
    • F02B25/18F02B25/22F02B63/02F02B2075/025F02F1/22
    • An engine includes a cylinder block (60), and a piston (50) slidably mounted in a cylinder (61a), with the cylinder block being formed with an exhaust passage (80) leading to a combustion chamber (40) through an exhaust port (81), a first scavenging port (20A) opened to an inner circumferential surface of the cylinder (61A), a first communication passage (30A) formed from the first scavenging port (20A) in a radial direction of the cylinder (61A), and a first scavenging passage (10A) formed with an opening on a bottom surface of the first communication passage (30A), in which a side surface on a far side from the exhaust port (81) forming the communication passage (30A) is formed towards the far side from the exhaust port (81) in the combustion chamber (40), and the opening portion of the first scavenging passage (10A) and a landing portion (36) formed in the periphery of the opening portion are formed at a bottom portion of the communication passage (30A).
    • 发动机包括气缸体(60)和可滑动地安装在气缸(61a)中的活塞(50),其中气缸体形成有通过排气口通向燃烧室(40)的排气通道(80) (81),朝向所述气缸(61A)的内周面开放的第一扫气口(20A),沿所述气缸(61A)的径向由所述第一扫气口(20A)形成的第一连通路(30A) ,在第一连通路(30A)的底面形成有开口的第一扫气通路(10A),其中形成连通路(30A)的排气口(81)的远侧的侧面是 形成在燃烧室40的排气口81的远侧,第一扫气通路10A的开口部和形成在开口部周缘的着陆部36形成在 连通通道(30A)的底部。