公开(公告)号：WO2017097329A1

公开(公告)日：2017-06-15

申请号：PCT/EP2015/078852

申请日：2015-12-07

Applicant: HUSQVARNA AB

Inventor： LARSSON, Mikael ,  EKLUND, Henrik

IPC: B23D59/00 ,  B27B17/08 ,  B27B17/10 ,  F02P11/00 ,  F02D31/00

CPC classification number: B27B17/08 ,  B23D59/001 ,  B27B17/10 ,  F02D31/001 ,  F02D31/006 ,  F02D31/009 ,  F02D41/022 ,  F02D41/062 ,  F02D41/08 ,  F02N3/02 ,  F02N11/00 ,  F02P5/1506 ,  F02P11/00

Abstract: Herein a hand-held power tool comprising an internal combustion engine (4) is disclosed. The hand-held power tool comprises, a working tool (6), a centrifugal clutch (8), and a control system (10). The internal combustion engine (4) has a clutch-in speed (ωC) above which the internal combustion engine (4) drives the working tool (6). A speed limitation controller (14), is configured to limit an engine speed at a limitation speed below the clutch-in speed (ωC). The control system (10) is configured to calculate an integral of the rotational speed of the internal combustion engine (4), and to deactivate the speed limitation controller (14) after the integral reaches an integration limit value, such that the internal combustion engine (4) is rotatable above the limitation speed (ωL) to drive the working tool (6) via the centrifugal clutch (8).

Abstract translation: 这里公开了一种包括内燃机（4）的手持式工具机。 手持式工具机包括工作工具（6），离心式离合器（8）和控制系统（10）。 内燃机（4）具有离合器接合速度（ωC），高于该接合速度内燃机（4）驱动作业工具（6）。 速度限制控制器（14）被配置成将发动机速度限制在低于离合器速度（ωC）的限制速度。 控制系统（10）被配置为计算内燃机（4）的转速的积分，并且在积分达到积分极限值之后停用速度限制控制器（14），使得内燃机 （4）可在限制速度（ωL）以上转动，以通过离心离合器（8）驱动加工工具（6）。

公开(公告)号：WO2009116902A1

公开(公告)日：2009-09-24

申请号：PCT/SE2008/050291

申请日：2008-03-17

Applicant: HUSQVARNA AB ,  LARSSON, Mikael ,  CARLSSON, Bo ,  LANDÉN, Björn ,  LAVENIUS, Mats

Inventor： LARSSON, Mikael ,  CARLSSON, Bo ,  LANDÉN, Björn ,  LAVENIUS, Mats

IPC: F02M17/12 ,  F01P1/02 ,  F02D41/08 ,  F02D41/34 ,  F02D43/00 ,  F02M23/03 ,  F02M37/02 ,  F02M63/00 ,  F02P17/02 ,  F02P5/02

CPC classification number: F02D37/02 ,  F02B63/02 ,  F02D9/105 ,  F02D9/1055 ,  F02D11/106 ,  F02D35/0007 ,  F02D35/0053 ,  F02D41/067 ,  F02D41/08 ,  F02D2200/0404 ,  F02D2400/06 ,  F02D2400/14 ,  F02M17/04 ,  F02M17/12 ,  F16K31/082 ,  F16K37/0033 ,  F16K37/0041 ,  G01D5/2492 ,  Y10T137/87507

Abstract: A fuel supply unit (1) is provided e.g. a carbu rettor or a low pressure injection system of an internal combustion engine. The fuel supply unit (1) include s a main air passage (3), which has a throttle valve (8, 9) mount ed therein and the throttle valve (8, 9) includes a throttle shaft (8 ) extending between two to one another opposite located shaft sides (6, 7). A control module (2) for th e fuel supply (2) is mounted to one (7) of the shaft sides (6, 7), which control modul e (2) includes throttl e position detecting means (30; 300) for monitoring the position of the throttle valve (8, 9), and fuel valve means (60) for controlling th e fuel supply to the main air passage (3). Also, an ignition system is provided which is able to control the ignition timing with respect to status of the at least one of the means (30; 300, 40, 60, 100) in the control module (2) in order to at least control the idle speed of the engine. The ignition system further being arranged to power at least one of the means (30; 300, 40, 60, 100) of the control module (2).

Abstract translation: 燃料供给单元（1） 内燃机的卡布脱水机或低压喷射系统。 燃料供给单元（1）包括具有安装在其中的节流阀（8,9）的sa主空气通路（3），节气门（8,9）包括在两对一之间延伸的节流轴（8） 另一个相对的位置轴侧（6,7）。 用于燃料供应（2）的控制模块（2）安装到一个（7）轴侧（6,7）中，该控制模块（2）包括用于位置检测装置（30; 300） 监视节气门（8,9）的位置，以及用于控制向主空气通路（3）供油的燃料阀装置（60）。 而且，提供一种点火系统，其能够相对于控制模块（2）中的至少一个装置（30; 300,40,60,100）的状态来控制点火正时，以至少 控制发动机的怠速。 点火系统还被布置成为控制模块（2）的装置（30; 300,40,60,100）中的至少一个供电。

公开(公告)号：WO2012115548A1

公开(公告)日：2012-08-30

申请号：PCT/SE2011/050207

申请日：2011-02-23

Applicant: HUSQVARNA AB ,  LARSSON, Mikael

Inventor： LARSSON, Mikael

IPC: F02D41/14 ,  F02D31/00

CPC classification number: F02D41/04 ,  F02D31/007 ,  F02D31/009 ,  F02D35/0053 ,  F02D41/1497 ,  F02D41/2454 ,  F02D2200/1012 ,  F02D2700/02 ,  F02P9/005

Abstract: The invention concerns a method for controlling at least one of a fuel supply and an air supply to an internal combustion engine (1), in a fuel supply section thereof, such that an A/F-ratio is adjusted automatically to a desired level. Moreover, the method is activated at a speed close to a cut-out speed threshold(52) where the engine speed will fluctuate around the threshold (52) and the method comprises the steps of : - receiving engine speed data on rotational speed from the engine (1), - briefly changing the A/F ratio, - comparing engine speed data that are essentially unaffected by the brief change to engine speed data that are affected by the brief change to evaluate the impact on the engine speed fluctuation resulting from the brief change, - adjusting the A/F ratio in the same direction as the brief change if the engine speed data affected by the brief change indicates an increase in acceleration after combustion/s, and - adjusting the A/F ratio in the opposite direction to the brief change if the engine speed data affected by the brief change indicates a decrease in acceleration after combustion/s.

Abstract translation: 本发明涉及一种用于控制其燃料供应部分中的内燃机（1）的燃料供给和空气供应中的至少一种的方法，使得A / F比自动调节到期望水平。 此外，该方法以接近切断速度阈值（52）的速度被激活，其中发动机速度将围绕阈值波动（52），并且该方法包括以下步骤： - 从转速阈值（52）接收关于转速的发动机转速数据 发动机（1）， - 简要地改变A / F比， - 将基本上不受短暂变化影响的发动机转速数据与受短暂变化影响的发动机转速数据进行比较，以评估对由 如果发生短时间变化影响的发动机转速数据表明燃烧后的加速度有所增加，则调整A / F比率与短时间相同的方向调整A / F比，并且相反方向调整A / F比 如果受短暂变化影响的发动机转速数据表明燃烧/ s后的加速度下降，则进行简要更改。

公开(公告)号：WO2007004936A1

公开(公告)日：2007-01-11

申请号：PCT/SE2005/001100

申请日：2005-07-01

Applicant: HUSQVARNA AB ,  CARLSSON, Bo ,  LARSSON, Mikael

Inventor： CARLSSON, Bo ,  LARSSON, Mikael

IPC: F02P5/15 ,  B27B17/10 ,  F02P1/08 ,  F02P11/02 ,  F02P11/04 ,  F02P5/02

CPC classification number: F02P11/00 ,  F02N15/022 ,  F02P1/086 ,  F02P5/1506 ,  F02P5/1508 ,  F02P9/005

Abstract: The present invention relates to a method for controlling an ignition system of an internal combustion engine which has a primary firing pulse generator for charging a capacitor and an electronic switch for discharging the capacitor via an ignition coil to generate an ignition voltage. A microcomputer operates the switch to control the ignition timing of said generator, said microcomputer having speed detection means to directly or indirectly detect the rotational speed of the engine and a speed limitation control to limit the engine speed to a limitation speed below the clutch-in speed of a centrifugal clutch. In the present invention the speed limitation control is active or activated when starting the engine and being deactivated when said speed detection means detects a low speed state of the engine.

Abstract translation: 本发明涉及一种用于控制内燃机的点火系统的方法，所述内燃机具有用于对电容器充电的初级点火脉冲发生器和用于通过点火线圈对电容器进行放电以产生点火电压的电子开关。 微型计算机操作开关以控制所述发电机的点火正时，所述微型计算机具有速度检测装置以直接或间接地检测发动机的转速，以及速度限制控制，以将发动机转速限制在低于离合器的限制速度 离心离合器的速度。 在本发明中，当起动发动机时，速度限制控制被激活或被激活，并且当所述速度检测装置检测到发动机的低速状态时被停用。

公开(公告)号：WO2017129246A1

公开(公告)日：2017-08-03

申请号：PCT/EP2016/051832

申请日：2016-01-28

Applicant: HUSQVARNA AB

Inventor： LARSSON, Mikael ,  EKLUND, Henrik ,  LUNDBLAD, Björn ,  ASSARGÅRD, Johan

IPC: F02D41/06 ,  F02D41/22 ,  F02D41/28 ,  F02N15/02 ,  F02P5/02 ,  F02P5/15 ,  F02P9/00 ,  F02P11/00 ,  F02B63/02 ,  H04Q5/00

CPC classification number: F02D41/22 ,  F02B63/02 ,  F02B2075/025 ,  F02D41/062 ,  F02D2041/281 ,  F02D2400/06 ,  F02N15/026 ,  F02P5/02 ,  F02P5/1506 ,  F02P9/005 ,  F02P11/00 ,  H04Q5/00 ,  H04Q9/00

Abstract: Herein a control system (10) for controlling an internal combustion engine of a hand-held power tool (2) is disclosed. The control system (10) comprises an electronic control logic (24), a first and a second sensor (26, 28). A first conductive path (36) comprises the first sensor (26). A second conductive path (38) comprises the second sensor (28). The first and second conductive paths are connected to an input (40) of the electronic control logic (24). The first and second conductive paths are connected to a fixed voltage potential. The first conductive path (36) has a first electrical property and the second conductive path (38) has a second electrical property. The first electrical property and the second electrical property together are different from at least one of the first electrical property and the second electrical property, such that the electronic control logic (24) is able to detect different states.

Abstract translation: 这里公开了一种用于控制手持式工具机（2）的内燃机的控制系统（10）。 控制系统（10）包括电子控制逻辑（24），第一和第二传感器（26,28）。 第一导电路径（36）包括第一传感器（26）。 第二导电路径（38）包括第二传感器（28）。 第一和第二导电路径连接到电子控制逻辑（24）的输入（40）。 第一和第二导电路径连接到固定电压电势。 第一导电路径（36）具有第一电特性并且第二导电路径（38）具有第二电特性。 第一电特性和第二电特性一起不同于第一电特性和第二电特性中的至少一个，使得电子控制逻辑（24）能够检测不同的状态。

公开(公告)号：WO2013141767A1

公开(公告)日：2013-09-26

申请号：PCT/SE2012/050314

申请日：2012-03-21

Applicant: HUSQVARNA AB ,  LARSSON, Mikael ,  LUNDBLAD, Björn ,  ASSARGÅRD, Johan ,  EKLUND, Henrik

Inventor： LARSSON, Mikael ,  LUNDBLAD, Björn ,  ASSARGÅRD, Johan ,  EKLUND, Henrik

IPC: H04L12/40 ,  G06F1/32

CPC classification number: G05B15/02 ,  H04L12/12 ,  H04L12/40013 ,  H04L12/40039 ,  H04L2012/4026 ,  Y02D50/40

Abstract: Arrangement and methods for communicating data between a control system (100) of a power tool (10) and a computing device (20). The arrangement (1) comprises a control system (100) with a plurality of electronic control units, ECUs (110, 120), a computing device (20), and a connecting unit (30) comprising a data connection (32). The plurality of ECUs (110, 120) are connected to a common bus of the control system (100). Each of the plurality of ECUs (110, 120) has a passive service mode (201) and an active service mode (202).The computing device is operable of transmitting a wake-up communication signal to the plurality of ECUs (110, 120), which wake-up communication signal comprises an ID of a selected ECU (110, 120) out of the plurality of ECUs (110, 120). The selected ECU (110, 120) is operable to switch from the passive service mode (201) to the active service mode (202) as a response to detecting its ID in the wake-up communication signal, so as to allow communication of data between the selected ECU (110, 120) and the computing device (20) via the data connection.

Abstract translation: 用于在电动工具（10）的控制系统（100）和计算装置（20）之间传送数据的布置和方法。 装置（1）包括具有多个电子控制单元，ECU（110,120），计算装置（20）和包括数据连接（32）的连接单元（30）的控制系统（100）。 多个ECU（110,120）连接到控制系统（100）的公共总线。 所述多个ECU（110,120）中的每一个具有被动服务模式（201）和主动服务模式（202）。所述计算装置可操作以将唤醒通信信号发送到所述多个ECU（110,120） ），该唤醒通信信号包括多个ECU（110,120）中的所选ECU（110,120）的ID。 所选择的ECU（110,120）可用于从被动服务模式（201）切换到主动服务模式（202），作为在唤醒通信信号中检测其ID的响应，以便允许数据的通信 在所选择的ECU（110,120）和计算设备（20）之间经由数据连接。

公开(公告)号：WO2018231120A1

公开(公告)日：2018-12-20

申请号：PCT/SE2018/050545

申请日：2018-05-30

Applicant: HUSQVARNA AB

Inventor： WYKMAN, Tomas ,  EKLUND, Henrik ,  LARSSON, Mikael

IPC: F02D41/06 ,  F02M1/02 ,  F02M7/12 ,  G01B7/30

Abstract: The present disclosure relates to a carburetor assembly (7) comprising a control unit (17), an air channel (8), a throttle valve (9), a choke valve (10), a pulsed fuel valve (11), and a fuel supply line (12). The control unit (17) is adapted to control the fuel valve (11) to supply fuel in accordance with a certain start setting, where the choke valve (10) can be open or closed. The carburetor assembly (7) comprises a rotation angle detector assembly (20) with a choke detector part (29) that is mounted to a choke shaft (30) that is connected to the choke valve (10) such that the choke detector part (29) is arranged to rotate together with the choke valve (10). The rotation angle detector assembly (20) further comprises a choke sensor device (23, 33) that is connected to the control unit (17) and can be affected by the choke detector part (29) such that the choke sensor device (23, 33) provides different output signals to the control unit (17) in dependence of whether the choke valve (10) is open or closed.

公开(公告)号：WO2012002859A1

公开(公告)日：2012-01-05

申请号：PCT/SE2010/050758

申请日：2010-07-01

Applicant: HUSQVARNA AB ,  LARSSON, Mikael ,  OTTOSSON, Magnus ,  CARLSSON, Bo

Inventor： LARSSON, Mikael ,  OTTOSSON, Magnus ,  CARLSSON, Bo

IPC: F02D41/06 ,  F02D35/00 ,  F02M1/08 ,  F02M17/04

CPC classification number: F02M1/08 ,  F02D41/047 ,  F02D41/065 ,  F02D2400/02 ,  F02D2400/04 ,  F02D2400/06 ,  F02M1/10 ,  F02M17/04 ,  F02M19/0235 ,  F02N3/02

Abstract: A method for controlling the fuel supply to an internal combustion engine at startup, the engine having a fuel supply system which can be set in at least two start modes, a lean mode, and a rich mode, the rich mode providing extra fuel during start-up of the engine, the method including: a) during a start attempt, determining if the next start attempt should be executed in lean or rich mode based on an evaluation of at least one engine parameter/s from the previous start attempt and/or at least one engine parameter/s from the last successful run, and/or at least one engine parameters/s of the present start attempt, and b) setting the fuel supply system in rich or lean mode depending of the evaluation in such a way that the next start attempt is executed in said rich or lean mode.

Abstract translation: 一种用于控制启动时对内燃机的燃料供给的方法，该发动机具有能够设定为至少两种起动模式，稀薄模式和丰富模式的燃料供给系统，所述丰富模式在起动期间提供额外的燃料 所述方法包括：a）在开始尝试期间，基于从先前开始尝试的至少一个引擎参数的评估和/或确定是否应以贫或富模式执行下一次启动尝试， 或来自最后成功运行的至少一个发动机参数，和/或当前启动尝试的至少一个发动机参数，以及b）根据这样的评估中的评估将燃料供应系统设置为富/稀模式 以下述开始尝试在所述富或稀模式中执行的方式。

公开(公告)号：WO2012002888A1

公开(公告)日：2012-01-05

申请号：PCT/SE2011/050851

申请日：2011-06-28

Applicant: HUSQVARNA AB ,  LARSSON, Mikael ,  OTTOSSON, Magnus ,  CARLSSON, Bo

Inventor： LARSSON, Mikael ,  OTTOSSON, Magnus ,  CARLSSON, Bo

IPC: F02D41/06 ,  F02D35/00 ,  F02M1/02 ,  F02M1/16 ,  F02M17/04

CPC classification number: F02M1/08 ,  F02D41/047 ,  F02D41/065 ,  F02D2400/02 ,  F02D2400/04 ,  F02D2400/06 ,  F02M1/10 ,  F02M17/04 ,  F02M19/0235 ,  F02N3/02

Abstract: The invention concerns a method for controlling the fuel supply to an internal combustion engine at start-up. The fuel supply system can be set in at least two start modes, a lean mode and a rich mode, and the selection of mode is based on an evaluation of a previous start attempt or successful run. The invention also concerns a carburettor (10) having a fuel supply system including a main fuel path (13) with an actively controlled fuel valve (26) and an idling fuel path (14) branching off from the main fuel path (13) downstream of the valve (26). The fuel supply system further includes a start fuel line (23, 423) starting upstream (figure 1 ) or downstream (figure 4) of the fuel valve (26) and ending in at least one start fuel outlet near and downstream of a choke valve.

Abstract translation: 本发明涉及一种控制在启动时向内燃机供油的方法。 燃料供应系统可以设置为至少两种启动模式，瘦模式和丰富模式，并且模式的选择基于对先前开始尝试或成功运行的评估。 本发明还涉及具有燃料供给系统的化油器（10），该燃料供应系统包括具有主动控制的燃料阀（26）的主燃料通路（13）和从主燃料通路（13）向下游分流的空转燃料通路（14） 的阀（26）。 燃料供应系统还包括从燃料阀（26）的上游（图1）或下游（图4）开始并在止回阀附近和下游的至少一个起始燃料出口处结束的启动燃料管路（23,423） 。

公开(公告)号：WO2009085006A1

公开(公告)日：2009-07-09

申请号：PCT/SE2008/051554

申请日：2008-12-22

Applicant: HUSQVARNA AB ,  REUTERBERG, Anders ,  ARONSSON, Tore ,  LARSSON, Mikael ,  CARLSSON, Bo ,  SUNDBERG, Niklas

Inventor： REUTERBERG, Anders ,  ARONSSON, Tore ,  LARSSON, Mikael ,  CARLSSON, Bo ,  SUNDBERG, Niklas

IPC: F02P11/02 ,  F02D43/04

CPC classification number: F02P1/086 ,  F02D2400/06 ,  F02P9/005

Abstract: A method for controlling an engine speed of an internal combustion engine of a hand held power tool such as a chain saw or cut off saw, preferably by controlling an ignition system of the engine, which ignition system has a primary firing pulse generator for charging a capacitor and an electronic switch for discharging the capacitor via an ignition coil to generate an ignition voltage, a microcomputer operating the switch to control the ignition timing of said generator, said microcomputer in communication with a speed detection means that detects the rotational speed of the engine and a speed limitation control to limit the engine speed to a limitation speed, wherein the speed limitation control is active or activated when an activation condition has been fulfilled, and the speed limitation control is deactivated when a deactivating condition(s) has been fulfilled.

Abstract translation: 一种用于控制诸如链锯或切割锯的手持式电动工具的内燃机的发动机转速的方法，优选地通过控制发动机的点火系统来控制该点火系统，该点火系统具有用于充电的初级点火脉冲发生器 电容器和用于通过点火线圈放电电容器以产生点火电压的电子开关，微型计算机操作开关以控制所述发电机的点火正时，所述微型计算机与检测发动机转速的速度检测装置 以及速度限制控制，以将发动机速度限制在限制速度，其中当已经满足激活条件时速度限制控制被激活或激活，并且当已经达到停用条件时，速度限制控制被去激活。