公开(公告)号：US07735465B2

公开(公告)日：2010-06-15

申请号：US11826153

申请日：2007-07-12

申请人： Nils Kunert ,  Jan Borchardt ,  Andreas Bähner ,  Predag Ostojic ,  Andreas Lingen

发明人： Nils Kunert ,  Jan Borchardt ,  Andreas Bähner ,  Predag Ostojic ,  Andreas Lingen

IPC分类号： F02B75/02 ,  F02P5/00

CPC分类号： F02P9/005 ,  F02D41/0087 ,  F02D41/3058 ,  F02D2400/04 ,  F02D2400/06

摘要： An internal combustion engine includes a cylinder (2) wherein a combustion chamber (5) is formed. The engine also includes devices for metering fuel and combustion air as well as an ignition device for igniting the mixture in the combustion chamber (5). A method for operating the internal combustion engine provides that fuel and combustion air are supplied to the engine and the mixture is ignited in the combustion chamber (5). The combustion chamber (5) is delimited by a piston (7) which drives a crankshaft (25) rotatably journalled in a crankcase (3). A control is provided which controls the supply of fuel and the ignition of the mixture in the combustion chamber (5). The internal combustion engine is so controlled in at least one operating state that the number of combustions is less than the number of engine cycles in the same time span. To avoid the formation of self ignitions, the operating state is a high rpm range wherein the rpm lies above the rated rpm and below the rpm in a regulating range.

摘要翻译： 内燃机包括形成有燃烧室（5）的气缸（2）。 发动机还包括用于计量燃料和燃烧空气的装置以及用于点燃燃烧室（5）中的混合物的点火装置。 用于操作内燃机的方法提供燃料和燃烧空气被供给到发动机，并且混合物在燃烧室（5）中点燃。 燃烧室（5）由驱动曲轴（25）的活塞（7）限定，该曲轴（25）可旋转地轴颈安装在曲轴箱（3）中。 提供控制燃料供给和混合物在燃烧室（5）中点燃的控制装置。 内燃机在至少一个操作状态下被控制，使燃烧次数小于发动机循环次数在同一时间跨度。 为了避免形成自点火，操作状态是高转速范围，其中转速高于额定转速并且在调节范围内低于转速。

公开(公告)号：US20080011271A1

公开(公告)日：2008-01-17

申请号：US11826153

申请日：2007-07-12

申请人： Nils Kunert ,  Jan Borchardt ,  Andreas Bahner ,  Predag Ostojic ,  Andreas Lingen

发明人： Nils Kunert ,  Jan Borchardt ,  Andreas Bahner ,  Predag Ostojic ,  Andreas Lingen

IPC分类号： F02P5/00

CPC分类号： F02P9/005 ,  F02D41/0087 ,  F02D41/3058 ,  F02D2400/04 ,  F02D2400/06

摘要： An internal combustion engine includes a cylinder (2) wherein a combustion chamber (5) is formed. The engine also includes devices for metering fuel and combustion air as well as an ignition device for igniting the mixture in the combustion chamber (5). A method for operating the internal combustion engine provides that fuel and combustion air are supplied to the engine and the mixture is ignited in the combustion chamber (5). The combustion chamber (5) is delimited by a piston (7) which drives a crankshaft (25) rotatably journalled in a crankcase (3). A control is provided which controls the supply of fuel and the ignition of the mixture in the combustion chamber (5). The internal combustion engine is so controlled in at least one operating state that the number of combustions is less than the number of engine cycles in the same time span. To avoid the formation of self ignitions, the operating state is a high rpm range wherein the rpm lies above the rated rpm and below the rpm in a regulating range.

摘要翻译： 内燃机包括形成有燃烧室（5）的气缸（2）。 发动机还包括用于计量燃料和燃烧空气的装置以及用于点燃燃烧室（5）中的混合物的点火装置。 用于操作内燃机的方法提供燃料和燃烧空气被供给到发动机，并且混合物在燃烧室（5）中点燃。 燃烧室（5）由驱动曲轴（25）的活塞（7）限定，该曲轴可转动地轴颈安装在曲轴箱（3）中。 提供控制燃料供给和混合物在燃烧室（5）中点燃的控制装置。 内燃机在至少一个操作状态下被控制，使燃烧次数小于发动机循环次数在同一时间跨度。 为了避免形成自点火，操作状态是高转速范围，其中转速高于额定转速并且在调节范围内低于转速。

公开(公告)号：US08662047B2

公开(公告)日：2014-03-04

申请号：US12149622

申请日：2008-05-06

申请人： Predag Ostojic ,  Andreas Lingen ,  Michael Schmid ,  Jörg Amann

发明人： Predag Ostojic ,  Andreas Lingen ,  Michael Schmid ,  Jörg Amann

IPC分类号： F02F1/22 ,  F02F3/24 ,  F16J9/22

CPC分类号： F02N19/004 ,  F02B25/14 ,  F02B2075/025 ,  F02D15/04 ,  F02D2400/06

摘要： A handheld work apparatus has an internal combustion engine (9, 9′, 9″) and a starter device (8). The internal combustion engine has a piston (10, 10″) which has at least one piston ring (37, 38). In order to avoid a delay when starting the engine, at least one recess is provided in the cylinder bore (26) which bridges the at least one piston ring (37, 38) in at least one position of the piston (10, 10′) and which has a distance (n, o, p) to all function openings of the engine (9, 9′, 9″) configured in the cylinder bore (26). To reduce the compression in the combustion chamber (25), the piston (10′) has only one piston ring (37) or two piston rings (37, 38) are provided having respective piston ring gaps (39, 40) defining an angle (β) which is up to approximately 45°.

摘要翻译： 手持式作业装置具有内燃机（9,9'，9“）和起动装置（8）。 内燃机具有至少一个活塞环（37,38）的活塞（10,10“）。 为了在启动发动机时避免延迟，在缸孔（26）中设置至少一个凹槽，该凹槽将活塞（10,10'）的至少一个位置上的至少一个活塞环（37,38） ），并且其具有构造在气缸孔（26）中的发动机（9,9'，9“）的所有功能开口的距离（n，o，p）。 为了减小燃烧室（25）中的压缩，活塞（10'）仅具有一个活塞环（37）或两个活塞环（37,38），其具有相应的活塞环间隙（39,40） （β），其高达约45°。

公开(公告)号：US20090126672A1

公开(公告)日：2009-05-21

申请号：US12149622

申请日：2008-05-06

申请人： Predag Ostojic ,  Andreas Lingen ,  Michael Schmid ,  Jorg Amann

发明人： Predag Ostojic ,  Andreas Lingen ,  Michael Schmid ,  Jorg Amann

IPC分类号： F02F1/00

CPC分类号： F02N19/004 ,  F02B25/14 ,  F02B2075/025 ,  F02D15/04 ,  F02D2400/06

摘要： A handheld work apparatus has an internal combustion engine (9, 9′, 9″) and a starter device (8). The internal combustion engine has a piston (10, 10″) which has at least one piston ring (37, 38). In order to avoid a delay when starting the engine, at least one recess is provided in the cylinder bore (26) which bridges the at least one piston ring (37, 38) in at least one position of the piston (10, 10′) and which has a distance (n, o, p) to all function openings of the engine (9, 9′, 9″) configured in the cylinder bore (26). To reduce the compression in the combustion chamber (25), the piston (10′) has only one piston ring (37) or two piston rings (37, 38) are provided having respective piston ring gaps (39, 40) defining an angle (β) which is up to approximately 45°.

摘要翻译： 手持式作业装置具有内燃机（9,9'，9“）和起动装置（8）。 内燃机具有至少一个活塞环（37,38）的活塞（10,10“）。 为了在启动发动机时避免延迟，至少一个凹槽设置在气缸孔（26）中，该凹槽将活塞（10,10'）的至少一个位置上的至少一个活塞环（37,38） ），并且其具有构造在气缸孔（26）中的发动机（9,9'，9“）的所有功能开口的距离（n，o，p）。 为了减小燃烧室（25）中的压缩，活塞（10'）仅具有一个活塞环（37）或两个活塞环（37,38），其具有相应的活塞环间隙（39,40） （β），其高达约45°。

公开(公告)号：US08544448B2

公开(公告)日：2013-10-01

申请号：US12829412

申请日：2010-07-02

申请人： Predag Ostojic ,  Andreas Paa

发明人： Predag Ostojic ,  Andreas Paa

IPC分类号： F02D43/00 ,  F02P5/00 ,  F02B63/00 ,  F02D41/14

CPC分类号： F02D41/1454 ,  F02D37/02 ,  F02D41/1497 ,  F02D41/34 ,  F02P5/145 ,  Y02T10/44 ,  Y02T10/46

摘要： For operating an internal combustion engine with a combustion chamber delimited by a piston driving a crankshaft in a crankcase, with a device for supplying fuel, an ignition device, and an electronic control unit, wherein a correlation between a power output of the internal combustion engine and a lambda value in the combustion chamber is defined by a power output curve that has a first ascending branch, a maximum, and a second descending branch where the lambda value is smaller than 1, the position of an operating point of the internal combustion engine is determined by adjusting the ignition timing to an adjusted ignition timing and evaluating the engine speed reaction caused by the adjusted ignition timing. The supplied fuel quantity is changed as a function of the determined position of the operating point when the determined position of the operating point is not a desired operating point.

摘要翻译： 用于操作具有燃烧室的内燃机，该燃烧室由在曲轴箱中驱动曲轴的活塞限定，用于供应燃料的装置，点火装置和电子控制单元，其中内燃机的功率输出 并且燃烧室中的λ值由功率输出曲线限定，该功率输出曲线具有第一上升支路，最大值和第二下降支路，其中λ值小于1，内燃机的工作点的位置 通过将点火正时调整到调整的点火正时并评估由调整的点火正时引起的发动机转速反应来确定。 当所确定的工作点的位置不是期望的操作点时，供应的燃料量根据确定的工作点的位置而变化。

公开(公告)号：US20110000462A1

公开(公告)日：2011-01-06

申请号：US12829412

申请日：2010-07-02

申请人： Predag Ostojic ,  Andreas Paa

发明人： Predag Ostojic ,  Andreas Paa

IPC分类号： F02P5/04 ,  F02P5/00

CPC分类号： F02D41/1454 ,  F02D37/02 ,  F02D41/1497 ,  F02D41/34 ,  F02P5/145 ,  Y02T10/44 ,  Y02T10/46

摘要： For operating an internal combustion engine with a combustion chamber delimited by a piston driving a crankshaft in a crankcase, with a device for supplying fuel, an ignition device, and an electronic control unit, wherein a correlation between a power output of the internal combustion engine and a lambda value in the combustion chamber is defined by a power output curve that has a first ascending branch, a maximum, and a second descending branch where the lambda value is smaller than 1, the position of an operating point of the internal combustion engine is determined by adjusting the ignition timing to an adjusted ignition timing and evaluating the engine speed reaction caused by the adjusted ignition timing. The supplied fuel quantity is changed as a function of the determined position of the operating point when the determined position of the operating point is not a desired operating point.

摘要翻译： 用于操作具有燃烧室的内燃机，该燃烧室由在曲轴箱中驱动曲轴的活塞限定，用于供应燃料的装置，点火装置和电子控制单元，其中内燃机的功率输出 并且燃烧室中的λ值由功率输出曲线限定，该功率输出曲线具有第一上升支路，最大值和第二下降支路，其中λ值小于1，内燃机的工作点的位置 通过将点火正时调整到调整的点火正时并评估由调整的点火正时引起的发动机转速反应来确定。 当所确定的工作点的位置不是期望的操作点时，供应的燃料量根据确定的工作点的位置而变化。