RU1802200C - Device for out-board starting of internal combustion engine - Google Patents

Abstract

(Usage: starting internal combustion engines and charging batteries from an external AC power network. Summary of the invention: the device is equipped with a two-pole contactor 4, through which two additional windings 3 of a three-phase transformer 2 are connected to the network. A bridge rectifier 5 is connected via a resistor 8 the primary winding of the saturable transformer 7, the secondary winding of which is connected through an amplifier9 and rectifier 10 to the first relay 11. The disconnecting .contacts 12 of the relay 11 are connected to the winding circuit an intermediate relay 6 controlling the contactor 4. A second relay 13 connected to the output of the current sensor 14 controls a three-pole contactor 1. 1 or.

Description

The invention relates to starting devices for internal combustion engines, in particular to devices for starting internal combustion engines of vehicles from an external AC power grid.

The purpose of the invention is to increase reliability, economy and increase the battery life.

The drawing shows a diagram of the device ..

The device contains a three-pole contactor 1 connected to the primary winding of a step-down three-phase transformer 2, and its two additional primary windings 3 connected to the mains through a two-pole contactor 4, the secondary winding of a step-down transformer 2 is connected to a bridge rectifier 5, the intermediate relay of which is connected in parallel 6 and the primary winding of the saturable transformer 7 through the resistor 8, the secondary winding of the transformer 7 is connected to the amplifier 9, the output of which is through the rectifier 10 p It is connected to the coil of the first relay 11, and its NC contacts 12 are connected to the coil circuit of the intermediate relay 6, which in turn controls the two-way contactor 4. The three-pole contactor 1 is controlled by the second relay 13, which is connected to the output of the current sensor 14.

The device operates as follows.

When the device output is connected to the vehicle’s battery, an intermediate relay 6 is activated, which leads to the inclusion of a two-pole contactor 4, through which a single-phase mains power is supplied to a step-down three-phase transformer 2, and the transformer 2 is supplied with power through two additional windings 3, which are connected in series with two main windings. At the same time, a voltage appears at the output of the bridge rectifier 5, which provides the battery charging current, which is close to the nominal value. At the moment the stator of the internal combustion engine is turned on, the load current of the rectifier 6 increases sharply and the voltage at the output of the current sensor 14 increases proportionally to it, and when its voltage reaches the level of operation of the second relay 13, the contactor 1 is turned on and the contactor 4 is simultaneously turned off (blocking unit in description not provided). In this case, the voltage at the output of rectifier 5 rises by a pre-calculated level to compensate for the voltage drop in the supply conductors when a large inrush current passes. After starting the engine

the starter is turned off, the load current of the rectifier 5 drops, the second relay 13 is switched, the three-pole contactor 1 is turned off and the two-pole contactor 2 is turned on, the rated current passes through the current sensor 4

battery charge current. When the connecting conductors are removed from the battery terminals, the constant component of the current curve passing through the resistor 8 and the primary winding of the saturable transformer 7, the output of which is driven by a periodic sequence of pulses at the moments when the magnetic core of the transformer 7 is saturated, disappears. This information is input

0 of amplifier 9, a positive signal is emitted from rectifier 10 and fed to the coil of the first relay 11, the contacts 12 of relay 11 open, the coil of intermediate relay 6 is de-energized, which leads to 5 disconnection of the two-pole contactor 4. Thus, the entire device is de-energized.

The proposed device allows to increase the reliability of starting the internal combustion engine, due to the increase in the supply voltage of the car starter at the time of starting, compensating for the voltage drop in the underwater wires, to reduce energy consumption during

5 preparing the device for operation and preventing premature failure of the battery, protecting it from an excessively high level of charging current,

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Claims (1)

SUMMARY OF THE INVENTION An external triggering device for internal combustion engines of vehicles, comprising mains leads, a three-pole contactor, a step-down three-phase transformer, the primary windings of which are connected to the main leads through a three-pole contactor, a bridge rectifier connected to 0 terminals of the secondary winding of a three-phase transformer, an intermediate relay and a current sensor, characterized in that, in order to increase reliability in operation, it is equipped with a two-pole contactor, 5 saturable transformer, resistor, amplifier, additional rectifier and two relays, and the three-phase transformer is made with two additional windings connected to the network terminals via a two-pole contactor, and to the rectifier through re-connected between the intermediate winding the resistor is connected to the primary winding of the on-relay and by a bridge rectifier, a permeable transformer, the secondary exact relay is connected to a bipolar the winding of which is connected through an amplifier-contactor, and the current sensor is connected to the boiler and an additional rectifier with a first-5th relay connected to a three-pole relay, opening contacts which contactor.