Abstract:
A coupling (10) for a vehicle-engine cooling fan comprises first and second parts (12,14). A clutch plate (30) provided on the first part is biased into engagement with the second part by a spring (34), for transferring drive. On rotation of the first part, a plurality of radial weights (40) disposed around the spring generates a centrifugal force which is transferred to the clutch plate by link members (46). When the rotation reaches a threshold speed, a component of the force is sufficient to overcome the spring force and the clutch plate (30) is actuated from the engaged position to the disengaged position and drive ceases to be transferred to the second part (14).
Abstract:
Die Erfindung betrifft eine Kupplungsanordnung (1) zum Übertragen eines Antriebsdrehmomentes von einer Antriebswelle (2) auf ein Nebenaggregat, insbesondere auf ein Lüfterrad (11), eines Kraftfahrzeugs, umfassend eine Antriebswelle (2), einen Abtrieb (10) sowie eine mittels einer Elektromagnetanordnung (13) schaltbare Reibscheibenkupplung (12). Erfindungsgemäß ist vorgesehen, dass die Kupplungsanordnung (1) zusätzlich zu der Reibscheibenkupplung (12) zur Drehmomentübertragung von der Antriebswelle (2) auf den Abtrieb (10) eine Flüssigkeitsreibungskupplung (4) umfasst, deren hydraulisches Steuerventil (5) zur Einstellung des Schlupfes mittels der Elektromagnetanordnung (13) der Reibscheibenkupplung (12) ansteuerbar ist.
Abstract:
Die Erfindung betrifft eine Vorrichtung zum Antreiben einer Strömungsmaschine, insbesondere eines Lüfters (2) eines Kraftfahrzeuges durch einen Verbrennungsmotor, wobei die Strömungsmaschine von dem Verbrennungsmotor über zwei Antriebsstränge mit je einer Regelkupplung und einer Schaltkupplung antreibbar ist. Es wird vorgeschlagen, dass beide Antriebsstränge (14, 15) parallel geschaltet sind und dass die Strömungsmaschine (2) entweder über die Schaltkupplung (12) oder über die Regelkupplung (8) antreibbar ist, wobei die beiden Antriebsstränge vorzugsweise ungleiche Übersetzungen i 1 , i 2 aufweisen (i 1 ≠ i 2 ).
Abstract:
Temperature regulated fan drive for high power engines, particularly internal combustion engines, wherein the rotation speed of the cooling fan is changed as a function of the dissipation of heat generated by the engine. To this effect, there is provided before the cooling fan a differential planetary gear to which is adjoined an adjustable operation sliding brake. The latter may be a hydraulic pump for the cooling water of the engine, an electric hysteresis brake or an electric generator. The resulting sliding power may be used at another location or may be annihilated.
Abstract:
The invention relates to a drive arrangement for an auxiliary equipment (14) of an engine, wherein the drive arrangement comprises an epicyclical gear (16) having a sun gear (18), a ring gear (20) and a planet carrier (22), and wherein: - a first component is connected to the engine, - a second component is connected to a first electric machine (32), and - a third component is connected to said auxiliary equipment (14), characterized in that said first component is guided in rotation on the engine block and comprises a rigid assembly (22R, 222R) which supports the other two components, in that the stator of the first electric machine (32) is fixed on a holder (46), said holder being guided in rotation directly or indirectly on said first component rigid assembly, and in that the first component is guided in rotation on the engine block independently from the holder.
Abstract:
A hybrid accessory drive system having two operational modes, a mechanical mode and an electric mode. The accessory is typically a cooling fan. A continuously variable mechanical belt drive mechanism drives the accessory as one mode of operation. An electric motor along with a planetary roller screw mechanism which converts rotary motion to axial motion is used to change the sheave position and thus the drive ratio. Upon disengagement of the mechanical drive mode, the electric motor can be used to drive the accessory in a second mode.
Abstract:
A variable speed fan drive (10) particularly suitable for a vehicle having an internal combustion engine is provided. The fan drive comprises an input shaft (11) driven by the output of an engine. The input drives a carrier (12) for planetary gears (13) which each orbit a sun gear (14) in an epicyclic gear arrangement. A fan (16) is coupled to the sun gear. A further gear arrangement (18,19,21), driven by the input shaft, delivers a variable output to input ratio, the output of which is coupled to a housing (17) of the epicyclic gear arrangement which is meshed with the planetary gears. The provision of the epicyclic gear arrangement in combination with the variable ratio allows the fan blade to operate in reverse. Advantageously, this can be exploited to provide a means to clean a radiator grille.
Abstract:
A cooling device with fan for vehicle, which comprising a fan (1) for cooling the parts of vehicle and a drive box (2) for achieving the angle between the axis of the power source of the fan and the axis of the fan. The input of the drive box connected either directly to the power source or to a transmitting device linked to the power source. Since using the drive box for achieving the angle between the axis of the power source of the fan and the axis of the fan, the fan can directly take the engine as the power source. The fan can has larger flabellum by the deflecting arrangement and thus can direct to the water tank radiator with relativesmall space. Therefore, a considerably improved heat emission can be reached.
Abstract:
Thermal management systems for vehicle engines which include hybrid fan drives with viscous clutches and electronic motors, particularly brushless DC motors (BLDC). One embodiment incorporates a pulley driven, electronically controlled viscous clutch mechanism and an internal rotor BLDC motor. Another embodiment includes an engine crank mounted electronically controlled viscous clutch mechanism with a tethered electric motor, particularly a BLDC motor. A further embodiment is an engine block mounted electronically controlled viscous clutch mechanism with an integrated external rotor BLDC motor.