The article analyses the modern lubrication systems for internal combustion engines. Systems with mechanical drive components that contain mechanical and electronic components have been found to have a number of disadvantages. In particular, when the internal combustion engine is started cold, when the viscosity of the oil is high, the hydrodynamic resistance characteristic rises sharply, which leads to high pressure at low speeds and the drive requires low pump speeds.
switched reluctance motor
The article substantiates the expediency of using a capacitive storage in the circle of an electronic switch to improve the technical and economic performance of the switched reluctance motor. Such electromechanical converter is maximally simplest by design and construction, chip in technology side. It has good performance compared to simplest motor — induction, and, electric drive on the base of switched reluctance motor according to the regulating properties to drives with DC motors, that have unlimited distribution as know.
Constructions of an electromechanical transducer for a switched reluctance motor (SRM) and the circuit of a transistor switch with a serial energy storage are considered. The electromechanical transducer with pseudo U-shaped stator core elements has rational (efficient) magnetic system, and applied circuit design for the electronic commutator of the switched reluctance motor (SRM) allows improving power characteristics.
The basic equations of the method of the calculation of a switched reluctance motor (SRM) with a passive rotor and capacity energy storage (CES), which in the future is supposed to be used in a surface lift drive, are shown in the paper. The emphasis is placed on the peculiarities of the calculation of basic values, which then form the basis of the mathematical model of the design, which is implemented programmatically and using which the SRM for a surface lift drive was developed.
One of the most simple in terms of construction, the most practically feasible and reliable motors is a switched motor with salient-pole stator, concentrated coils and its winding and toothed passive rotor. Such motor is simpler, cheaper and more practically technical than asynchronous motor and by control characteristics does not concede to DC motors. The basic electrical scheme of a commutator with capacity buffers of energy of switched reluctance motor and circumscribed, the new phase-width mode by regulating frequency of reversion of such drives is offered.
The electric drive on basis of the Switched Reluctance Motor with the parallel accumulator of energy is offered for the wheels drive to the trolleybus. Main characteristic allow an engine successfully to complete with traction collector engines. They have higher reliability and less volume of active part. Recommendations are grounded in relation to designing taking into account the features of construction and on the basis of theory of electromagnetic transformation of energy. These recommendations are taken as a basis of project calculation.