Motor and tractor non-contact electric generator

FIELD: electric engineering.

SUBSTANCE: motor and tractor non-contact electric generator comprises rotor, and also stator with system of excitation and working winding. According to invention, is part of distribution mechanism and is located in upper or lower part of specified distribution mechanism block head. At the same time rotor of non-contact electric generator is arranged in the form of geared pulley of internal combustion engine valve mechanism drive. Teeth of specified geared pulley may enter in magnetic contact via air gap to magnetic conductors of non-contact electric generator stator. Working coils are arranged on them, which are connected to other magnetic conductors of stator, where excitation coils are arranged.

EFFECT: improved operational characteristics, reduction of mass, improved thermal characteristics and simplified coupling of generator to crank shaft, reduction of consumed power, improved weight and dimensional parametres and reduction of heating, increased service life.

5 dwg

 

The invention relates to electric machines, namely contactless synchronous generators, induction type, operating mainly in the rectifier load, used in generating plants automotive vehicles.

Naturally (valve) mechanisms of the internal combustion engine are well known. Among them a certain way is a common mechanism in the form of a shaft with a rotor made in the form of a toothed pulley [1, 2] and the belt. One of the pulleys is mounted on the crankshaft of the engine, the other [1], or others [2] (in the case of, for example, two camshafts) - on the camshafts. The pulleys in this case serve only to transmit mechanical power.

Known generator set, using as the rotor moving parts of an internal combustion engine, for example, the crankshaft, namely, his cheeks [3].

Its disadvantage is the presence of brush contact, in particular rings mounted on the crankshaft, which leads to an increase in its axial length.

Closest to the claimed technical essence and the achieved results is contactless synchronous generator [4], containing the stator excitation system and a working winding.

Its disadvantage is that it requires serious intervention in the design of the knees is Ala, in particular, the performance of the cheeks in the form of laminated segments.

The technical result consists in the minimal intervention in the design of the engine is ensured by the fact that automotive contactless generator containing the rotor and the stator excitation system and an operating winding, according to the invention is part of the distribution mechanism, while contactless generator placed at the top or bottom of the cylinder head of the distribution mechanism, the contactless rotor of the generator is made in the form of a gear pulley of the valve drive mechanism of an internal combustion engine, with the teeth of the toothed pulley have the opportunity of entering into magnetic contact through an air gap with a magnetic stator contactless generator, which are working coil and which is connected with other magnetic circuits of the stator, on which is placed the coil excitation.

The drawing shows the proposed device, in which figure 1 shows schematically the location of the generator on the engine with two camshafts, figure 2 - same, but for an engine with a single camshaft, and the generator is located under the pulley shaft, figure 3 in more detail showing the construction of the generator for a motor with two rasprava the AMI, figure 4 is a view from the side of one of the gaps of the generator, figure 5 is a section through the middle. As for the generator shown in figure 2, it is in fact half of the generator shown in figure 3, and is therefore not shown.

The generator is part of the distribution mechanism, which consists of the rotor, made in the form of a gear pulley of the crankshaft 1, the timing belt 2, the camshaft pulley 3, the tension roller 4. The main part of the generator stator is installed or in the upper part of the cylinder head - 1, or in the lower row of figure 2. With this arrangement, the stator of the generator the rotor is in the form of a gear pulley of the valve drive mechanism. The peculiarity of the rotor is made in the form of a gear pulley 3 is the presence of the grooves of the teeth 6 and 7, which are in magnetic contact through an air gap with a magnetic circuit 8 of the generator 5, these cores have a connection with a vertical magnetic circuit 9 with the exciting coils 10 and the magnetic circuit 8, in particular, on average, shown in figure 3, 4, wearing a working coil 11. The generator 5 is mounted on the shelf 12 by using non-magnetic tape 13, the ends of which are welded to the threaded rods 14, which screw nut 15.

The operation of the device. When the engine pulleys 1 and 3 rotate. Thus, the teeth 7 I the field, and in magnetic contact with the magnetic circuit 8, role of stator teeth. Open magnetic circuit, i.e. when opposite magnetic circuits 8 of the slots 6, the magnetic flux induced by the exciting coils 10, crosses the coils of the working coils 11, putting them in the load current. The control data generator is provided from regular voltage regulator. The only design changes to the engine design, is that to reduce eddy current losses pulleys 3 are laminated.

The use of this construction eliminates a separate generator that reduces power consumption, and to use as a rotor of the camshaft pulley, which improves weight and dimensions, and also reduces heat, increases the service life, i.e. improves the operating characteristics in the absence of contact brushes.

Sources of information

1. The he, V., Ignatov A.P. and other Front-drive cars VAZ. - M.: USAAF, 1989. - 335 S. Il., 26, p.56.

2. Vorontsov AU Distribution mechanisms for 4-stroke engines. - Moto, No. 12, 2006, p.72-78.

3. RF patent № 2027041 - Generator / Ivanov V.G. - publ. 20.01.95, bull.№ 2.

4. U.S. patent No. 5.287.518 Engine crankshaft with a generator AC magnetic resistance - publ. 15.02.1994.

Automotive contactless electrogene the torus, containing the rotor and the stator excitation system and an operating winding, characterized in that it is part of the distribution mechanism, while contactless generator placed at the top or bottom of the cylinder head of the distribution mechanism, the contactless rotor of the generator is made in the form of a gear pulley of the valve drive mechanism of an internal combustion engine, with the teeth of the toothed pulley have the opportunity of entering into magnetic contact through an air gap with a magnetic stator contactless generator, which are working coil and connected with the other magnetic circuit of the stator, on which is placed the coil excitation.



 

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