COOLING DEVICE FOR A MOTOR SAWHand-held chain saw with an internal combustion engine, wherein the internal combustion engine has a crankcase, a cylinder, a muffler and a cooling fan wheel arranged on one side of the crankcase, whe…DRIVE·Jun 10·2 min readFollowB27B17/00STIHL AG & CO KG ANDREAS [DE]
ELECTROMAGNETIC VALVE FOR A FUEL SYSTEMThe invention relates to an electromagnetic valve (1) for a fuel system, consisting of a housing (2) in which an electrical coil (7) and a magnetic armature (9) are arranged. The magnetic armature (9)…DRIVE·Dec 21·2 min readFollowF02M51/02STIHL AG & CO KG ANDREAS [DE]
GASIFIER AND METHOD FOR OPERATING A COMBUSTION ENGINE WITH A GASIFIERA carburetor has a housing (18) in which a control roller (22) is rotatably mounted. In the carburetor, a section (25) of an intake channel (21) is formed. In the control roller (22), a partial sectio…DRIVE·Aug 10·2 min readFollowF02B25/14STIHL AG & CO KG ANDREAS [DE]
METHOD FOR CONTROLLING THE SPEED LIMIT OF A COMBUSTION ENGINEThe invention relates to a method for controlling the speed limitation of an internal combustion engine (8) in a hand-held work device (1), such as a motor chainsaw. A cylinder (9) of the internal com…DRIVE·Dec 16·2 min readFollowF02B63/02STIHL AG & CO KG ANDREAS [DE]
Manually operated working device having a pump, pump and pump bellowsA handheld work tool has a fuel supply system and a pump for delivering fuel from the fuel supply system. The pump (40) has an elastic pump bellows (13) to be actuated by the operator. The pump bellow…DRIVE·May 20·2 min readFollowF02B63/02STIHL AG & CO KG ANDREAS [DE]
Method for starting an internal combustion engine with a starting deviceThe invention relates to a method for starting an internal combustion engine (14) with a pull-cord starter, wherein a fuel/air mixture is supplied to the internal combustion engine (14) via an intake …DRIVE·Mar 18·2 min readFollowF02B63/02STIHL AG & CO KG ANDREAS [DE]
Aerating valve for a fluid containerThe invention relates to a ventilation valve for a liquid container (2), in particular for a fuel tank in a handheld work apparatus such as a chain saw, a cut-off saw, a brush cutter, a blower or the …DRIVE·Feb 25·2 min readFollowF02M37/20STIHL AG & CO KG ANDREAS [DE]
Working machine with a combustion engineA work apparatus has an internal combustion engine (11) that drives at least one tool of the work apparatus via a clutch (13). The clutch (13) has at least one drive element (63) in operative connecti…DRIVE·Dec 17·2 min readFollowB27B17/00STIHL AG & CO KG ANDREAS [DE]
Hand-guided appliance with a combustion engineA hand-held working tool comprises an internal combustion engine (12), a throttle lever (10), and an operating mode selector (8). The throttle lever (10) is adjustable between an idle position (62) an…DRIVE·Dec 3·2 min readFollowF02D11/04STIHL AG & CO KG ANDREAS [DE]
Method for operating a combustion engineAn internal combustion engine has a cylinder in which a piston is mounted for reciprocating motion, which drives a crankshaft rotatably mounted in a crankcase. The piston delimits a combustion chamber…DRIVE·Oct 8·2 min readFollowF02N19/004STIHL AG & CO KG ANDREAS [DE]
Carburetor for a hand-held work device and hand-held work deviceThe carburetor (36) has a carburetor housing (40), in which a carburetor roller (37) is pivot-mounted around a rotational axis (76). A needle (48) is fixed on the carburetor roller, where the needle i…DRIVE·Jun 25·1 min readFollowF02B63/02STIHL AG & CO KG ANDREAS [DE]
Method for operation of a combustion engine in a hand-held work deviceThe method involves specifying a first ignition timing for each engine speed of a first engine speed range in an internal combustion engine (15). A second ignition timing is specified for each engine …DRIVE·Jun 25·1 min readFollowF02P5/045STIHL AG & CO KG ANDREAS [DE]
Work deviceThe tool i.e. brush cutter, has an intermediate stopper acting between a zero position and a maximum position, where a position of the stopper is adjustable over an adjustment element (17). A control …DRIVE·Jun 18·1 min readFollowF02B63/02STIHL AG & CO KG ANDREAS [DE]
Adjustment securing means for an adjustment screw to a carburetorThe securing element screws a head portion (13) of adjustment screws (10,11) into a gasifier housing (2). A retained cap (20) made of plastic is fixed to a wall case (30) of gasifier housing. The adju…DRIVE·Apr 2·1 min readFollowF02M19/04STIHL AG & CO KG ANDREAS [DE]
Circuit for starting an electric motor within a hand held deviceThe circuit (7) has a ring main system (11) provided with an electromotor (2), and parallel branches comprising an electronic switch (15) lying in series to a capacitor (14) i.e. electrolytic capacito…DRIVE·Feb 19·1 min readFollowB60L1/003STIHL AG & CO KG ANDREAS [DE]
Method for switching off a speed limiting device in a combustion engineThe method involves driving a work tool by a crankshaft engine through a clutch configured to engage in dependence upon the rotational speed of the combustion engine. The clutch is configured to gener…DRIVE·Feb 5·1 min readFollowF02B63/02STIHL AG & CO KG ANDREAS [DE]
Work deviceThe apparatus i.e. brush cutter (1), has a combustion engine (9) arranged in a motor housing (2) and driving a work tool e.g. blade. A starting enrichment unit is configured for the combustion engine …DRIVE·Jan 1·1 min readFollowF02M1/02STIHL AG & CO KG ANDREAS [DE]
Power tool having a brake systemThe brushcutter (1) has a combustion engine that drives a work tool (5). A start enrichment unit is provided for a combustion engine and a brake arrangement is configured for the work tool. An operati…DRIVE·Jan 1·1 min readFollowA01G3/067STIHL AG & CO KG ANDREAS [DE]
Starting safety circuit in a work device with an internal combustion engineThe circuit (40) has an operation sensor assigned to a safety brake device for emitting a first status signal as to an operating state of the brake device. A start position sensor (43) is arranged on …DRIVE·Jan 1·1 min readFollowF02D29/00STIHL AG & CO KG ANDREAS [DE]
Power tool having a braking systemThe apparatus (1) has a braking arrangement (55) for braking a work tool when the tool is in the actuated position of the arrangement and releasing the tool in the unactuated position of the arrangeme…DRIVE·Jan 1·1 min readFollowB27B17/083STIHL AG & CO KG ANDREAS [DE]
Hand-guided appliance with an internal combustion engine and an air filterThe implement has an air filter (38) including a cylindrical filter element (39) fixedly connected to end plates (51). One of the end plates serves as an air filter bottom (40). An intermediate flange…DRIVE·Nov 27·1 min readFollowF02M35/0207STIHL AG & CO KG ANDREAS [DE]
Tool comprising a fuel pumpThe work apparatus has a combustion engine (18) that drives work tool. A fuel pump is designed to convey the fuel from a fuel tank (12) to the combustion engine. The fuel pump is driven by the combust…DRIVE·Oct 23·1 min readFollowF02B63/02STIHL AG & CO KG ANDREAS [DE]
Manually operated work device with internal combustion engine with adjustable engine speed limitThe hand-operated working equipment has an internal combustion engine (4) for driving a tool, where the internal combustion engine has an ignition device, a fuel supplying device and a control device.…DRIVE·Aug 7·1 min readFollowA01D46/26STIHL AG & CO KG ANDREAS [DE]
Protective circuit for a battery packThe protective circuit has predetermined number of single cells, which are successively switched in two cell rows (A,B,C,D), which lie parallel to each other. A phase current (Ia,Ib,Ic,Id) flowing whi…DRIVE·Jul 24·1 min readFollowG01R31/385STIHL AG & CO KG ANDREAS [DE]
Protective circuit for a battery packThe circuit has lithium ion cells (4) that are connected in series (A-D) through cell connectors (Z0a-Z10a,Z0b-Z10b,Z0c-Z10c,Z0d-Z10d). The compensation lines (L1a-L10a,L1b-L10b,L1c-L10c,L1d-Ld10) are…DRIVE·Jul 24·1 min readFollowG01R31/3835STIHL AG & CO KG ANDREAS [DE]
Work deviceThe tool has a fuel pump (23) conveying fuel from a fuel tank (32) to an injection valve, which supplies the fuel to an internal combustion engine e.g. two-stroke engine. An impeller (28) is driven by…DRIVE·Jul 3·1 min readFollowF01P1/06STIHL AG & CO KG ANDREAS [DE]
METHOD FOR OPERATING A COMBUSTION ENGINEThe method involves measuring the crankcase pressure using a crankcase pressure sensor (21) of the combustion chamber (3), and evaluating the measured values of the crankcase pressure sensor using an …DRIVE·Jun 26·1 min readFollowF02B63/02STIHL AG & CO KG ANDREAS [DE]
Debalancing protection circuit for a battery packThe protective circuit has a monitoring circuit (9) for detecting voltages (U1a-U5a, U1b-U5b, U1c-U5c) applied across individual cells (2) of a cell composite (5) and outputting a signal when the comp…DRIVE·Jun 26·1 min readFollowH01M10/441STIHL AG & CO KG ANDREAS [DE]
Electric tool with an electric consumer and a battery packThe tool (1) has a housing accommodating a battery pack (10) and a housing wall and an edge. An electrical load (3) is fed by the battery pack. An electrical connecting cable (12) connects the electri…DRIVE·Jun 26·1 min readFollowB25F5/00STIHL AG & CO KG ANDREAS [DE]
Battery pack which can be worn on the backThe rechargeable battery pack (10) has a housing portion (14) that is provided with an inner receiving space for several lithium ion single cells which are electrically connected with each other. The …DRIVE·Jun 26·1 min readFollowH01M10/0481STIHL AG & CO KG ANDREAS [DE]
Combustion engine and hand-held work device with a combustion engineThe engine has crankcase (4), a crankshaft and a cylinder that is rotated around rotational axis. The crankcase has circumferential wall that is arranged extending in circumferential direction, and is…DRIVE·Jun 12·1 min readFollowF02B63/02STIHL AG & CO KG ANDREAS [DE]
Ignition circuitThe ignition circuit has ignition coil (34) that generates ignition spark at spark plug (20) arranged in combustion chamber. A control unit (32) controls the ignition coil. A sensor circuit (37) is co…DRIVE·Jun 12·1 min readFollowF02P1/08STIHL AG & CO KG ANDREAS [DE]
Internal combustion engine with a fuel supply systemThe engine (12) has a fuel supply device with fuel pump (34), fuel pressure damper (36) and injection valve (26). The pressure damper has damper membrane (54) that separates the damper chamber (53) an…DRIVE·Jun 12·1 min readFollowF02M1/16STIHL AG & CO KG ANDREAS [DE]
Hand-operated implement and suction head for connecting with a fuel line in a hand-held work deviceThe tools has a suction head (12) that is arranged at free end (45) of fuel line (9) and is provided in fuel tank. The suction head is connected with a fuel feed device (10) of a combustion engine (5)…DRIVE·May 29·1 min readFollowB01D35/02STIHL AG & CO KG ANDREAS [DE]
Method for controlling the speed limit of a combustion engineA combustion chamber mounted with spark plug is controlled by an ignition device. A speed control unit is provided to control speed of combustion engine. A speed trap circuit is provided to limit spee…DRIVE·Aug 1·1 min readFollowF02B63/02STIHL AG & CO KG ANDREAS [DE]
CarburettorThe carburetor has a rotary mounted throttle element with a throttle shaft (20) and a rotary mounted choke element with a choke shaft (18), where coupling elements define a start position of throttle …DRIVE·Apr 18·1 min readFollowF02D9/1065STIHL AG & CO KG ANDREAS [DE]
Method and device for producing electrical energy for a motor control deviceThe method involves providing a voltage source for the electric energy of the engine control unit (17). The electro-dynamic or photovoltaic electric energy is generated from the voltage source before …DRIVE·Jun 22·1 min readFollowF02N3/02STIHL AG & CO KG ANDREAS [DE]
Manually operated tool deviceThe device i.e. motor chain saw (1), has a starter device provided for starting a combustion motor and comprising an electro-motor. A rechargeable battery package is connected with the electro-motor v…DRIVE·Jun 22·1 min readFollowF02N11/0803STIHL AG & CO KG ANDREAS [DE]
