SU662739A1 - Contactless parametric sensor for electronic ignition system of internal combustion engine - Google Patents

Description

RATOR on the transistor (Fig. Y). The winding 7, located on the middle core of the core 5, is a feedback winding of the autogenerator.

The sensor works as follows. The autogenerator does not generate if the magnetically rotating rotor rods do not overlap the pole pieces of the E-shaped Core 5. This is because the voltage on the winding 7 does not induce a voltage, since the magnetic fluxes on average of the E-core core 5 contribute to excitation of oscillations in the circuit of the autogenerator are mutually compensated, which is ensured by an appropriate choice of the winding direction of 6.8 and the symmetry of the magnetic system, while the symmetry of the magnetic system is retained even if racks with additional rods, since the additional rods are located against each of the rods of the E-shaped core 5.

Due to the lack of generation, there is no voltage at the output of the sensor. When the rotor rotates, the magnetically conducting rods of the latter periodically overlap two adjacent pole pieces, increasing periodically the positive connection between the windings 6 И 7 (see Fig. 1). The equality of magnetic fluxes in the middle core of the E-shaped core is violated if positive feedback is induced in the winding 7 and high-frequency oscillations (100. kHz) occur in the oscillator.

Thus, at the output of the oscillator, synchronously with the operation of the x-wheel, high-frequency voltage pulses arise, which then form into voltage impulses that control the moment of sparking of the electronic ignition system.

When the engine load changes (the discharges in the engine intake manifold), the stand with the additional rods move under the influence of the thrust of the automatic vacuum machine distribute / g. As a result, the moment of overlapping of two adjacent cores 5 rods by rotor rods 2, and, consequently, the moment of occurrence of pulses in the sensor is displaced, than

and adjustment of the firing angle as a function of discharge. The presence of the third additional rod (lower in Fig. I) in the movable rack, which is not directly involved in the ob-.

Formation of a positive connection in the circuit of the autogenerator, ensures the symmetry of the magnetic system of the sensor in the absence of adjacent core rods bridged with 5 strings of the rotor at any possible displacement of the mobile pillar II.

The latter stabilizes the conditions for the occurrence and interruption of generation in the sensor autogenerator. In addition, the proposed sensor design provides the option of moving wires (connecting ropes) used in well-known sensors in the presence of a vacuum control of the ignition angle, which increases the reliability of the sensor and the system as a whole.

Claims (4)

Invention Formula A contactless parametric sensor for an electronic ignition system of internal combustion engines containing a transistor oscillator, whose collector and base windings are located on the rods of the E-shaped stator core, a cylindrical rotor with ferrite rods by the number of cylinders intersecting two adjacent stator rods perpendicular to axis of rotation, characterized in that, in order to increase efficiency. and reliability, additional rods are inserted into it, located against each rod of the E-shaped core and mounted on a stand that is part of a cylindrical surface. Sources of information taken into account in the examination 1. USSR author's certificate No. 280102, cl. F02 P 3/02, 1969. 2. US patent number 3711977, cl. 123-148 E, published. 1972 .. 3. The patent of Germany No. 1539172, 46 K 3/00, published 1972. 4. The patent of England No. 1239210, cl. FIB, pub. 1971.