公开(公告)号：US20190085779A1

公开(公告)日：2019-03-21

申请号：US16129637

申请日：2018-09-12

Applicant: Andreas Stihl AG & Co. KG

Inventor： Clemens Klatt

IPC: F02D41/06 ,  F02B63/02 ,  F02N3/02 ,  F02D41/20

CPC classification number: F02D41/067 ,  F02B63/02 ,  F02D41/20 ,  F02D2200/101 ,  F02D2400/04 ,  F02D2400/06 ,  F02N3/02 ,  F02P5/045 ,  F02P5/1506 ,  F02P11/025

Abstract: A handheld work apparatus has a combustion engine, a pull-rope starter, and a stop button for switching off the combustion engine. A throttle element is arranged in an intake channel of the combustion engine. The work apparatus has a control device for activating a spark plug and a fuel valve. The control device has a starting mode wherein the combustion engine can be started via the pull-rope starter, and an operating mode wherein the operator can adjust the throttle to vary the rotational speed (n) of the combustion engine. The operating and starting mode differ in terms of the control of ignition time and fuel quantity to be supplied. When the combustion engine is started from the switched-off state, the control device is automatically in starting mode, such that after the combustion engine is switched off, the work apparatus is immediately ready for restarting via the pull-rope starter.

公开(公告)号：US20180313284A1

公开(公告)日：2018-11-01

申请号：US16028231

申请日：2018-07-05

Applicant: Andreas Stihl AG & Co. KG

Inventor： Klaus Geyer ,  Martin Kiesner ,  Joerg Praeger ,  Steffen Bantle ,  David Fallscheer ,  Erik Ames

IPC: F02D41/06 ,  F02N3/02 ,  F02D41/30

CPC classification number: F02D41/062 ,  F02D41/067 ,  F02D41/3005 ,  F02D41/34 ,  F02D2200/101 ,  F02D2400/06 ,  F02N3/02 ,  F02P1/00 ,  F02P5/045 ,  F02P5/1506

Abstract: A method is for starting a combustion engine having a pull-rope starter. A fuel/air mixture is fed to the engine via an intake channel. The mixture is ignited by a spark plug. The combustion drives the piston downward and drives a crankshaft rotationally. The fuel system has a fuel channel opening into the intake channel. An electric fuel valve is open in its currentless state and closes a fuel channel only when an operating voltage is applied. An electronic control unit actuates the fuel valve and triggers an ignition spark and is utilized by a generator to supply energy to the control unit, the fuel valve and the ignition device. To prevent excessive enriching of the fuel/air mixture during starting, the energy, which is generated at the beginning of the rotation of the crankshaft, is used to first close the fuel valve before the control unit triggers an ignition spark.

公开(公告)号：US20170292436A1

公开(公告)日：2017-10-12

申请号：US15513899

申请日：2015-06-05

Applicant: MAZDA MOTOR CORPORATION

Inventor： Yoshie Kakuda ,  Daisuke Shimo ,  Sangkyu Kim ,  Hiroshi Minamoto ,  Kazuya Niida

IPC: F02B3/06 ,  F02G5/04 ,  F02D41/06 ,  F01K23/14

CPC classification number: F02B3/06 ,  F01K23/14 ,  F02B23/0669 ,  F02B23/0672 ,  F02B37/24 ,  F02D13/02 ,  F02D15/00 ,  F02D23/00 ,  F02D41/0007 ,  F02D41/067 ,  F02D41/068 ,  F02D41/40 ,  F02D41/402 ,  F02D41/403 ,  F02G5/04 ,  Y02T10/125 ,  Y02T10/144 ,  Y02T10/44

Abstract: A diesel engine of the present invention includes a turbocharger including: a turbine provided on an exhaust passage; a compressor provided on an intake passage; and a plurality of nozzle vanes provided around the turbine to control a flow velocity of an exhaust gas colliding with the turbine, angles of the nozzle vanes being changeable. In a case where a ratio of a volume of a combustion chamber when the intake valve is closed to a volume of the combustion chamber when a piston is located at a top dead center is denoted by an effective compression ratio εe, and a total displacement of the engine is denoted by V (L), the effective compression ratio εe is set to satisfy Formula (1) “−0.67×V+15.2≦εe≦14.8.”

公开(公告)号：US08061322B2

公开(公告)日：2011-11-22

申请号：US12026620

申请日：2008-02-06

Applicant: Eric L. King ,  George M. Pattullo ,  David L. Speirs

Inventor： Eric L. King ,  George M. Pattullo ,  David L. Speirs

IPC: F02M1/00

CPC classification number: F02N3/02 ,  F02B63/02 ,  F02D9/1065 ,  F02D11/02 ,  F02D11/04 ,  F02D41/067 ,  F02D2011/103 ,  F02D2400/06 ,  F02M1/08 ,  F02N15/10 ,  F02N19/001

Abstract: A starting system for a combustion engine including a carburetor with a throttle valve moveable between idle and wide open positions, a throttle control to control movement of the throttle valve during normal operation of the engine, and a linkage between the throttle control and the throttle valve. The starting system includes a recoil pulley, a pull-cord to rotate the recoil pulley, an actuator moveable in response to rotation of the recoil pulley, and a throttle override device. The throttle override device has a first control member moveable from a first position to a second position in response to movement of the actuator, and a second control member moveable in response to movement of the first control member from a first to a second position. The second control member is operably associated with the linkage to prevent the throttle valve from being in its wide open position when the second control member is in its second position.

Abstract translation: 一种用于内燃机的起动系统，包括具有在空转和大开位置之间运动的节气门的化油器，用于控制在发动机的正常运行期间节流阀的运动的节气门控制，以及节气门控制和节气门之间的联动 。 启动系统包括反冲滑轮，用于旋转反冲滑轮的拉绳，响应于反冲滑轮的旋转而可移动的致动器以及节气门超驰装置。 节气门超控装置具有响应于致动器的运动而从第一位置移动到第二位置的第一控制构件，以及可响应于第一控制构件从第一位置移动到第二位置的第二控制构件。 第二控制构件可操作地与联动装置相关联，以防止当第二控制构件处于其第二位置时节气门处于其大的打开位置。

公开(公告)号：US07886716B1

公开(公告)日：2011-02-15

申请号：US12556218

申请日：2009-09-09

Applicant: Tetsuya Arai ,  Takanori Sato

Inventor： Tetsuya Arai ,  Takanori Sato

IPC: F02D31/00 ,  F02M3/00

CPC classification number: F02M1/02 ,  F02D31/003 ,  F02D41/067

Abstract: A carburetor control system includes: a governor device that is coupled to a throttle lever, opens a throttle valve when an operation of an engine is stopped, and opens or closes the throttle valve in accordance with a rotational number of the engine when the engine is in operation; a choke return spring urging a choke lever in a direction to close a choke valve; and an automatic choke device opening the choke valve in accordance with an increase in temperature of the engine. In the carburetor control system, the throttle lever is provided with a drive arm pivoting the choke lever, during a cold operation of the engine, to a position where the choke valve is at an intermediate degree of opening in operative connection with the throttle lever being pivoted by the governor device to a position where the throttle valve is at a degree of opening for idling or a position in a vicinity thereof. Accordingly, it is possible to mechanically open the choke valve to a predetermined intermediate degree of opening, when the engine is in a cold idling state, in operative connection with the throttle valve, so as to be capable of ensuring a fuel-efficient and stable idling state.

Abstract translation: 化油器控制系统包括：调节器装置，其联接到节流杆，当发动机的操作停止时打开节气门，并且当发动机为发动机时根据发动机的转数打开或关闭节气门 在运作中 扼流圈复位弹簧，迫使扼流杆沿方向闭合阻流阀; 以及自动扼流装置，其根据发动机的温度升高而打开阻流阀。 在化油器控制系统中，节流杆设置有驱动臂，该驱动臂在发动机的冷运行期间将阻风杆枢转到止回阀处于与节流杆操作连接的中间开度的位置 由调速器装置枢转到节气门处于打开空闲位置或其附近位置的位置。 因此，当发动机处于冷怠速状态时与节流阀有效连接可以将阻流阀机械地打开至预定的中间开度，从而能够确保节能和稳定 空转状态

公开(公告)号：US20100058737A1

公开(公告)日：2010-03-11

申请号：US12552035

申请日：2009-09-01

Applicant: Takeshi Harada ,  Ikuo Ando ,  Daigo Ando

Inventor： Takeshi Harada ,  Ikuo Ando ,  Daigo Ando

IPC: F02D41/04

CPC classification number: B60W10/06 ,  B60K6/445 ,  B60L2240/445 ,  B60W20/00 ,  B60W20/15 ,  B60W2510/068 ,  B60W2710/0616 ,  F02D41/0255 ,  F02D41/067 ,  F02D41/1441 ,  F02D2200/023 ,  F02D2200/0414 ,  Y02T10/26 ,  Y02T10/6239

Abstract: In a hybrid vehicle using an engine as one of power sources, an ECU obtains catalyst temperature. The ECU performs a catalyst warm-up operation if the catalyst temperature is lower than first catalyst temperature necessary for exhaust gas purification during a continuous operation of the engine. The ECU performs intermittency prohibition operation for prohibiting an intermittent operation of the engine if the catalyst temperature is between the first catalyst temperature and second catalyst temperature necessary for the exhaust gas purification at starting of the engine. The ECU performs a normal operation for allowing the intermittent operation of the engine if the catalyst temperature is higher than the second catalyst temperature. Thus, deterioration of fuel consumption due to catalyst warm-up is inhibited while inhibiting deterioration of emission in the hybrid vehicle.

Abstract translation: 在使用发动机作为动力源的混合动力车辆中，ECU获得催化剂温度。 如果催化剂温度低于在发动机的连续运行期间废气净化所需的第一催化剂温度，则ECU执行催化剂预热操作。 如果催化剂温度在发动机起动时排气净化所需的第一催化剂温度和第二催化剂温度之间，ECU执行间歇禁止操作，以禁止发动机的间歇运行。 如果催化剂温度高于第二催化剂温度，则ECU执行用于允许发动机的间歇操作的正常操作。 因此，抑制了由于催化剂预热引起的燃料消耗的恶化，同时抑制了混合动力车辆的排放物的劣化。

公开(公告)号：US20090293828A1

公开(公告)日：2009-12-03

申请号：US12466583

申请日：2009-05-15

Applicant: Hisaya Iwata ,  Robert Koenen ,  Andrew Perez

Inventor： Hisaya Iwata ,  Robert Koenen ,  Andrew Perez

IPC: F02M1/00 ,  F02M1/10

CPC classification number: F02M1/02 ,  F02D41/065 ,  F02D41/067 ,  F02D2200/021 ,  F02M1/10

Abstract: A method of controlling a choke valve of an engine with a controller is disclosed. Also disclosed is an automatic choke performing the method, an engine having the automatic choke, and an apparatus having the engine. The controller includes an electronic circuit, such as a programmable device, and is coupled to a temperature sensor and a motor. The method includes determining a temperature value using the temperature sensor, determining a time period to hold the choke valve in a first position, keeping the choke valve at the first position for the time period, moving the choke valve from the first position toward a second position using the motor, determining a count to hold the choke valve, keeping the choke valve at the second position for the count, and moving the choke valve from the second position toward a fully open position.

Abstract translation: 公开了一种用控制器控制发动机的节流阀的方法。 还公开了执行该方法的自动扼流圈，具有自动扼流圈的发动机和具有发动机的装置。 控制器包括诸如可编程设备的电子电路，并且耦合到温度传感器和电动机。 该方法包括使用温度传感器确定温度值，确定将阻塞阀保持在第一位置的时间段，将阻塞阀保持在第一位置一段时间，将阻塞阀从第一位置向第二位置移动 使用电动机的位置，确定阻塞阀的计数，将阻塞阀保持在第二位置用于计数，并且将阻塞阀从第二位置移动到完全打开位置。

公开(公告)号：US07334551B2

公开(公告)日：2008-02-26

申请号：US11414423

申请日：2006-04-28

Applicant: George M. Pattullo

Inventor： George M. Pattullo

IPC: F02M1/02 ,  F02N3/02

CPC classification number: F02N3/02 ,  F02B63/02 ,  F02D9/1065 ,  F02D11/02 ,  F02D11/04 ,  F02D41/067 ,  F02D2011/103 ,  F02D2400/06 ,  F02M1/08 ,  F02N15/10 ,  F02N19/001

Abstract: A pull-cord start system has a recoil pulley coupled to a crankshaft of a combustion engine and a pull-cord wound about the recoil pulley which is pulled by an end user to rotate the recoil pulley and thereby start the engine. A throttle override device of the pull-cord start system has a shuttle coupled to the pull-cord for movement from a biased rest position to an active position when the pull-cord is being pulled by an end user. A linkage of the throttle override device which is preferably a Bowden cable extends between a throttle control and a throttle valve of a carburetor and is associated with the shuttle so that actuation of the throttle control when the shuttle is in the active position will not open the throttle valve which preferably is biased to an idle position because movement of the shuttle to the active position produces slack in the linkage.

Abstract translation: 拉绳启动系统具有联接到内燃机的曲轴的反冲滑轮和缠绕在反冲滑轮上的拉绳，该拉索被终端用户拉动以旋转反冲滑轮并从而起动发动机。 拉绳启动系统的节流覆盖装置具有联接到拉绳的梭子，用于当拉绳被最终用户拉动时从偏置的休止位置移动到活动位置。 优选为鲍登缆绳的节气门超控装置的连接件在节气门控制器和化油器的节流阀之间延伸并且与梭子相关联，使得当梭子处于主动位置时节气门控制的致动将不会打开 节气门优选地被偏压到怠速位置，因为梭子到主动位置的移动导致连杆松动。

公开(公告)号：US20040123831A1

公开(公告)日：2004-07-01

申请号：US10693304

申请日：2003-10-24

Inventor： Klemens Grieser ,  Ulrich Kramer ,  Klaus Badke

IPC: F02D045/00

CPC classification number: F02D41/042 ,  F02B2075/125 ,  F02D9/02 ,  F02D41/0002 ,  F02D41/0005 ,  F02D41/067 ,  F02D2009/0247 ,  F02N19/005 ,  F02N99/002 ,  F02N2019/008 ,  Y02T10/42

Abstract: The invention relates to a method for switching off an internal combustion engine and to an internal combustion engine suitable for carrying out said method. Here, after a switching off command for an internal combustion engine, the throttle valve in the air intake system is again opened to enable a relatively large amount of fresh air to be sucked into the combustion chambers of the internal combustion engine. This considerably increases the gas forces in the combustion chambers while the engine slows to a standstill, so that the internal combustion engine can be switched off in a controlled manner. At the same time, products of combustion, which may possibly still be present, are removed from the combustion chambers of the internal combustion engine. As a result, the preconditions for directly starting the internal combustion engine without a starter are created.

Abstract translation: 本发明涉及一种关闭内燃机和适于实施所述方法的内燃机的方法。 这里，在内燃机的切断指令之后，再次打开进气系统中的节流阀，能够将较大量的新鲜空气吸入内燃机的燃烧室。 这显着地增加了燃烧室中的气体力，同时发动机缓慢地停止，使得可以以受控的方式关闭内燃机。 同时，可能仍然存在的燃烧产物从内燃机的燃烧室中移出。 因此，无需起动器即可直接起动内燃机的前提条件。

公开(公告)号：US06718941B2

公开(公告)日：2004-04-13

申请号：US10328050

申请日：2002-12-26

Applicant: Seiji Asano ,  Bunji Igarashi ,  Satoshi Yamaji

Inventor： Seiji Asano ,  Bunji Igarashi ,  Satoshi Yamaji

IPC: F02M300

CPC classification number: F02D31/005 ,  F02D37/02 ,  F02D41/064 ,  F02D41/067 ,  F02D41/1454 ,  F02D2200/0406 ,  F02N11/0848

Abstract: An engine fuel control device includes an idle speed control valve that is disposed in a bypass passage that bypasses a throttle valve, a starting phase determination means that determines whether the engine is in a pre-start phase or a post-start phase, a first opening setting means that sets the opening of the idle speed control valve before starting, a second opening setting means that sets the opening of the idle speed control valve after starting, and a target opening setting means that sets at least one target opening for the idle speed control valve opening when the engine shifts from the pre-start phase to the post-start phase. While the engine is being started, the fuel control device shifts the ISC valve opening from the opening before the complete explosion is determined to the target opening after the complete explosion and eventually to the opening after the complete explosion.

Abstract translation: 发动机燃料控制装置包括：怠速控制阀，其设置在旁路节气门的旁通通路中;起动相位确定装置，其判定发动机是处于起动前阶段还是起动后阶段，第一 开启设定装置，其在启动之前设定怠速控制阀的开度，设定启动后的怠速控制阀的开度的第二开度设定单元，以及设定至少一个目标开度为空闲的目标开度设定单元 当发动机从预启动阶段转移到后启动阶段时，速度控制阀打开。 当发动机起动时，燃油控制装置在完全爆炸完成爆炸之前将开关的ISC阀开度从完全爆炸开始转移到目标开度，并在完全爆炸之后最终到达开启状态。