SU1753007A1 - Electric equipment of internal combustion engine - Google Patents

Abstract

Usage: electric starter start engines. SUMMARY OF THE INVENTION: The electrical equipment comprises a relay 12 with contacts 13 and 14, a delay element 15 and capacitors 16 and 17. The capacitor 16 is connected to the battery 1 through the starter switch 3 and the resistor 11, and the capacitor 17 via the ignition switch 2 and diode 10. For switching on the starter 6 closes the switch 3. After charging the capacitor 16, the relay 12 is activated and the contact 14 excludes the pull relay 4 to the capacitor 16, and the contact 13 opens the power supply circuit of the generator excitation winding 7. The capacitor 17 prevents the voltage drop across the ignition apparatus 9 when the starter is turned on 6. 1 sludge.

Description

The invention relates to electrical equipment of internal combustion engines, and in particular to the starting devices of internal combustion engines, and can be used on mobile and stationary installations where internal combustion engines are used.

There is a known scheme for starting the internal combustion engine, containing a battery, a starter switch, a comparator, driver, AND element, OR element. starter, traction relay. ''

A disadvantage of the known device is the complexity and low starting efficiency.

A known scheme for starting the internal combustion engine, comprising a battery, a comparator, a starter switch, a threshold device, a time relay, a shaper for the duration of the starter, the first and second AND elements, an OR element, a traction relay, a starter.

The disadvantages of the known device are the complexity and low starting efficiency.

The closest in technical essence and the achieved result is the electrical circuit of the engine. an internal combustion engine comprising a battery, an ignition switch, a starter switch, a traction relay with a normally open contact, a starter, a voltage regulator, ignition equipment, an excitation coil generator, a capacitor, and a diode, wherein the starter is connected to the battery through a traction relay contact, which is connected to the battery through the starter switch, the ignition equipment is connected to the battery through the ignition switch and. a diode, a capacitor is connected in parallel with the ignition equipment, and the generator field winding is connected between the voltage regulator and one of the battery terminals.

A disadvantage of the known electrical circuit is the low reliability.

The purpose of the invention is to increase the reliability.

This goal is achieved by the fact that the electrical equipment is equipped with an additional capacitor, an additional relay with normally closed and normally open contacts, a delay element and a resistor, with the additional relay connected to the battery through the starter switch, the delay element, an additional capacitor connected to the battery through the starter switch and resistor, traction relay is connected to the additional capacitor through the make contact of the additional relay, open the contact of which is included in the excitation winding circuit of the generator.

The drawing shows a diagram of the system.

The system contains a battery 1, an ignition switch 2, a starter switch 3, a traction relay 4 with normally open contacts 5, a starter 6, an excitation winding 7, a voltage regulator 8, an ignition system 9, a diode 10, a resistor 11, an additional relay 12 s is normal, closed contacts 13 and normally open contacts 14, delay element 15, capacitors 16 and 17.

Elements of the system are connected as follows.

The negative pole of the battery 1 is connected to the negative terminal of the generator excitation winding 7, the second terminal of the starter 6, the first terminals of the traction relay 4 and the auxiliary relay 12, with the negative poles of the capacitors 16 and 17. The positive terminal of the generator excitation winding 7 through the normally closed contacts 13 of the additional relay connected to the input of the voltage regulator 8. The positive pole of the battery 1 is connected to the first contact of the ignition switch 2, the first contact of the starter switch 3 and through the normally open contacts 5 to the first output of the starter 6. The second contact of the ignition switch 2 is connected to the anode of the diode 10, the cathode of which is connected to the input of the ignition system 9 and the positive pole of the capacitor 17. The second contact of the starter switch 3 is connected through the delay element 15 to the second terminal of the auxiliary relay 12 and through the resistor 11 to the positive pole of the capacitor 16 and through normally open contacts 14 with the second output of the traction relay 4.,

The system operates as follows.

For electric start-up of the internal combustion engine, switches 2 (ignition) and 3 (starter) are closed. During the time T determined by the delay element 15, the capacitor ^ (through the resistor 11) and the capacitor 17 (through the diode 10) are charged to the voltage E of the battery 1. The delay value T is determined by the values of the corresponding time constants 5 of the charge circuits of the capacitors 16 and 17 in this way so that during this time, the capacitors are fully charged. After time T, an additional relay 12 is activated and by contacts 13 it turns off the excitation winding of the generator, and by contacts 14 it connects the traction relay 4, which closes contacts 5, the starter 6 is connected to the battery 1 and scrolls the internal combustion engine. In start mode 10, the excitation winding 7 is turned off, while the energy consumption is reduced and the inhibitory effect of the generator is reduced. After closing the contacts 14, the energy stored in the capacitor 16 is fed to the winding of the traction relay 4, which is triggered. Through the resistor 11, the holding current of the traction relay 4, which is less than the trip current, flows. Thus, the current consumed by the traction relay is less than in the known device. To reduce the effect of the voltage drop on the battery 1 at the time of starting the starter 6 on the operation of the ignition system 9, the target formed by the diode 10 and the capacitor 17 serves. If the voltage at the anode of the diode 10 becomes less than at the cathode, it closes and the ignition system 9 uses as an energy source, a capacitor 17.

A comparative analysis of the proposed system and the known one shows that the proposed system has a lower current consumption at the time of startup, i.e. greater start-up efficiency and greater reliability than known, and its application will have a positive effect.

Claims (1)

Claim Electrical equipment of an internal combustion engine containing a storage battery, an ignition switch, a starter switch, a traction relay with a normally open contact, a starter, a voltage regulator, ignition equipment, an excitation coil generator, a capacitor and a diode, the starter being connected to the battery through a traction relay contact which is connected to the battery through the starter switch, the ignition equipment is connected to the battery through the ignition switch and the diode, which The capacitor is connected in parallel with the ignition equipment, and the generator field winding is connected between the voltage regulator 20 and one of the battery terminals, characterized in that. in order to increase the reliability of operation, it is equipped with an additional capacitor, an additional relay with normally closed and normally open contacts, a delay element and a resistor, the additional relay being connected to the battery through the starter switch and the delay element, the additional capacitor is connected to the battery through the switch starter and resistor, the traction relay is connected to the additional capacitor through the make contact of the additional relay, the break contact of which th is included in the excitation winding circuit of the generator.