公开(公告)号：WO2009038503A1

公开(公告)日：2009-03-26

申请号：PCT/SE2007/000825

申请日：2007-09-21

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

Inventor： CARLSSON, Bo ,  LARSSON, Mikael

IPC: F02D41/16 ,  F02D31/00

CPC classification number: F02D35/0053 ,  F02D31/008 ,  F02D41/0097 ,  F02D2041/2027 ,  F02D2041/286 ,  F02D2200/101

Abstract: Method for controlling fuel metering in a carburetor or a low pressure injection system of an internal combustion engine when the engine is operating at idle speed, the method comprising the steps of: a) monitoring the engine speed; b) determining a first variable (A) based on a first moving average algorithm using the monitored engine speed as input data; c) determining a second variable (B) based on a second moving average algorithm using the monitored engine speed as input data, where the first moving average algorithm is arranged to react faster to an engine speed change than the second moving average algorithm; d) comparing the second variable (B) to the first variable (A), where if 1) the second variable (B) is higher than the first variable (A): the fuel metering is set in a first leaner setting, and where if 2) the second variable (B) is lower than the first variable (A): the fuel metering is set in a second richer setting.

Abstract translation: 该方法包括以下步骤：a）监测发动机转速;（c）监测发动机转速; b）基于使用所监视的发动机速度作为输入数据的第一移动平均算法来确定第一变量（A）; c）基于使用所监测的发动机速度作为输入数据的第二移动平均算法来确定第二变量（B），其中所述第一移动平均算法被布置为比所述第二移动平均算法更快地对发动机速度变化作出反应; d）将第二变量（B）与第一变量（A）进行比较，其中如果1）第二变量（B）高于第一变量（A）：将燃料计量设置在第一稀疏设置中，并且其中 如果2）第二个变量（B）低于第一个变量（A）：燃料计量设置在第二个更加丰富的设置。

公开(公告)号：WO2007133125A1

公开(公告)日：2007-11-22

申请号：PCT/SE2006/000561

申请日：2006-05-12

Applicant: HUSQVARNA AKTIEBOLAG ,  CARLSSON, Bo ,  LARSSON, Mikael ,  ENANDER, Niklas ,  GUSTAFSSON, Reine ,  ROBERG, Mats

Inventor： CARLSSON, Bo ,  LARSSON, Mikael ,  ENANDER, Niklas ,  GUSTAFSSON, Reine ,  ROBERG, Mats

IPC: F02D41/14

CPC classification number: F02D31/007 ,  F02D31/008 ,  F02D35/0053 ,  F02D41/06 ,  F02D2400/06

Abstract: Method for adjusting the air-fuel ratio of an internal combustion engine (1), in a fuel supply section (8) thereof, such as a carburettor or a fuel-injection system, the fuel supply section (8) comprising means for adjusting the air-fuel ratio of the engine (1), the engine having an engine speed (N) and an engine throttle ranging from zero throttle to full throttle, the method comprising the steps of: a) measuring the engine speed (N) of the engine (1), b) comparing the engine speed (N) to a first engine speed value (NFS I; NiS1) c) if the engine speed (N) is lower than the first engine speed value; the air-fuel ratio is adjusted, d) repeating step a) to c) until the engine speed (N) is either larger than or equal to the first engine speed value (NFS I; N1Si).

Abstract translation: 一种用于调节内燃机（1）的空燃比的方法，在燃料供给部（8），例如化油器或燃料喷射系统中，所述燃料供给部（8）包括用于调节 发动机（1）的空燃比，发动机转速（N）和发动机节气门从零节气门到全节气门的发动机节气门，该方法包括以下步骤：a）测量发动机的发动机转速（N） 发动机（1），b）如果发动机转速（N）低于第一发动机转速值，则将发动机转速（N）与第一发动机转速值（NFS I; NiS1）c）进行比较; 调整空燃比，d）重复步骤a）至c），直到发动机转速（N）大于或等于第一发动机转速值（NFS I; N1Si）为止。

公开(公告)号：WO2007133126A1

公开(公告)日：2007-11-22

申请号：PCT/SE2006/000562

申请日：2006-05-12

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

Inventor： CARLSSON, Bo ,  LARSSON, Mikael

IPC: F02M17/14 ,  F02M69/28

CPC classification number: F02B25/14 ,  F02B33/04 ,  F02B2075/025 ,  F02M17/14 ,  F02M69/10

Abstract: Method for controlling fuel supply to a crank case scavenged internal combustion engine (1), in a fuel supply system (8) thereof, such as a carburettor (9) or a fuel- injection system, fuel being supplied to the engine (1), the fuel supply system (8) comprising means for shutting off fuel supply to the engine (1), partly or completely, during an engine revolution. A fuel control sequence Ns/PL determining a number of shut-offs Ns for which the fuel supply of the engine (1) will be partly or completely shut-off during a period of revolutions, and to the fuel control sequence Ns/PL corresponding fuel shut-off positions FCn determining which revolutions the fuel supply of the engine (1) will be partly or completely shut-off during the period of revolutions, the period having a period length PL of at least 10 revolutions.

Abstract translation: 用于控制向曲轴箱清扫的内燃机（1）的燃料供应的方法，在其燃料供应系统（8）中，例如化油器（9）或燃料喷射系统，供应给发动机（1）的燃料， 燃料供应系统（8）包括用于在发动机转速期间部分地或完全地关闭向发动机（1）供应燃料的装置。 确定在转数期间发动机（1）的燃料供给将被部分或完全关闭的关闭次数Ns的燃料控制序列Ns / PL，以及燃料控制序列Ns / PL对应 燃料切断位置FCn确定发动机（1）的燃料供应在转动期间部分或完全关闭的转速，该周期具有至少10转的周期长度PL。

公开(公告)号：WO2007133148A1

公开(公告)日：2007-11-22

申请号：PCT/SE2007/000463

申请日：2007-05-14

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

Inventor： CARLSSON, Bo ,  LARSSON, Mikael

IPC: F02M17/14 ,  F02M69/28

CPC classification number: F02B25/14 ,  F02B33/04 ,  F02B2075/025 ,  F02M17/14 ,  F02M69/10

Abstract: Method for controlling a fuel valve and/or an air valve supplying fuel or air respectively to a crank case scavenged internal combustion engine (1) comprising means for controlling said valve used for a supply system for combustible mixture to the engine, such as a carburettor (9) or a fuel injection system. The valve is controlled in consecutive periods of revolutions each having a period length (PL) of at least 10 revolutions. For each period a valve control sequence (N s /PL) is determined, providing a number (N s ) of valve shut-off positions (FCn) determining which particular revolutions in its corresponding period the valve is to be closed, where the number (N s ) of valve shut-off positions (FCn) corresponds to the amount of fuel or air respectively to be supplied to the engine (1) during the corresponding period.

Abstract translation: 用于控制向曲轴箱清扫的内燃机（1）分别供应燃料或空气的燃料阀和/或空气阀的方法，包括用于控制用于向发动机的可燃混合物供应系统的阀的装置，例如化油器 （9）或燃料喷射系统。 连续的旋转周期控制阀，其周期长度（PL）至少为10转。 对于每个周期，确定阀门控制序列（N SUB S / S / PL），提供一个阀门关闭位置（FCn）的数量（N n S），以确定哪个特定转速 在其对应的期间，阀被关闭，其中阀关闭位置（FCn）的数量（N N S S S S）分别对应于供应给发动机的燃料或空气量 1）期间。

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。

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：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：WO2005059344A1

公开(公告)日：2005-06-30

申请号：PCT/SE2003/002020

申请日：2003-12-19

Applicant: AKTIEBOLAGET ELECTROLUX ,  CARLSSON, Bo ,  MARTINSSON, Pär ,  HOLMDAHL, Mikael ,  OLANDER, Ulf

Inventor： CARLSSON, Bo ,  MARTINSSON, Pär ,  HOLMDAHL, Mikael ,  OLANDER, Ulf

IPC: F02F1/22

CPC classification number: F02B25/22 ,  F02B33/02 ,  F02B33/04 ,  F02B33/44 ,  F02F1/04 ,  F02F1/22

Abstract: A cylinder (1) for a crankcase scavenged two-stroke engine, comprising a cylinder bore (2) with centre line (12) and on opposite sides of the cylinder located closed transfer ducts (3, 3'), which cylinder (1) has an underside (4) essentially perpendicular towards the cylinder bore (2), intended to be connected to a crankcase (5) in a parting plane (A), and besides an inlet (8) for air/fuel mixture, the cylinder is provided with at least one inlet (9, 9' ) for additional air to the combustion chamber, which inlet for additional air runs through a cylinder wall (11) and via a recess in the piston and a transfer port (6, 6') leads down into the transfer ducts (3, 3'). Especially the transfer ducts (3,3') each have an upper section (3a, 3a') leading from the transfer port (6, 6') and in a tangential direction in relation to the cylinder bore (2) and is followed by an essentially right angled bend (3b, 3b') leading into a lower section (3c, 3c') leading into the parting plane (A), and at least the right-angled bend of each transfer duct is located on opposite sides of an exhaust duct (7) and during at least a part of the right-angled bend (3b, 3b') the transfer ducts approach each other.

Abstract translation: 一种用于曲轴箱清扫二冲程发动机的气缸（1），包括具有中心线（12）的气缸孔（2）和位于闭合传送管道（3,3'）的气缸的相对侧上，该气缸（1） 具有基本上垂直于气缸孔（2）的下侧（4），用于在分型平面（A）中连接到曲轴箱（5），并且除了用于空气/燃料混合物的入口（8）之外，气缸是 设置有至少一个入口（9,9'），用于向燃烧室提供额外的空气，该入口用于附加空气穿过气缸壁（11）并经由活塞中的凹部和传送口（6,6'） 引导到传送管道（3,3'）。 特别地，传送管道（3,3'）各自具有从传送口（6,6'）引出并相对于气缸孔（2）沿切线方向的上部（3a，3a'），并且其后是 通向通向分型平面（A）的下部分（3c，3c'）的基本上直角的弯曲部（3b，3b'），并且每个传送管道的至少直角弯曲部位于 排气管道（7），并且在直角弯曲部（3b，3b'）的至少一部分期间，传送管道彼此接近。