RU12706U1 - VEHICLE ENGINE STARTER CONTROL DEVICE - Google Patents

Abstract

A car engine starter control device comprising a stabilized voltage divider, an input connected to an engine frequency sensor, a frequency meter connected to an output of a stabilized voltage divider, a trigger, a reset input connected to an output of a frequency meter, and a starter traction relay, characterized in that a voltage stabilizer is inserted into it power supply, differentiating element, control pulse shaper and power switch, while the input of the voltage regulator is connected through device contacts The ignition key is connected to the vehicle’s power bus, and a trigger and a differentiating link are connected to its output, connected to the installation input of the trigger, the output of which is connected to the input of the control pulse shaper, the output connected to the control input of the power key, which is connected between the starter traction relay and through the starter the ignition key contacts the vehicle power bus, which is connected through the instrument contacts of the ignition key to the control pulse shaper.

Description

VEHICLE ENGINE STARTER CONTROL DEVICE

The proposed utility model relates to the field of automotive electronics and can be used to control car starters.

A device for controlling a starter for an internal combustion engine is known, which comprises an engine speed sensor that controls a thyristor switch that switches an intermediate relay, the contacts of which control the starter traction relay 1.

The disadvantage of this device is the low reliability due to the incomplete control of the thyristor and the spread of its characteristics.

It is also known that the starter is equipped with an accelerator sensor, comprising a speed sensor, a threshold device, a trigger etched by a threshold device at one input and a signal from the engine oil pressure sensor at another input, an intermediate relay, whose control winding is connected to the output of the trigger through the contacts of the ignition key 2.

Such a device also has low reliability due to the large spread of the signals of the oil pressure sensor.

It is also known an electronic device for controlling a starter of an internal combustion engine 3 to automatically turn off and lock the starter on when the engine is running, which is a prototype of the device, which contains a stabilized voltage divider connected to an engine frequency sensor, a frequency meter connected to the output of a stabilized voltage divider, a normal device, connected to the output of the frequency meter, a trigger connected to the vehicle’s threading bus through the instrument contacts to ignition box, by the way, the trigger reset input is connected to the output of the norm device, and the intermediate relay coil connected to the power bus through the starter contacts of the ignition key is connected to the trigger output circuit, the intermediate relay contacts are connected to the starter traction relay winding circuit.

However, this device has the following disadvantages:

1. Using an intermediate relay to control the traction starter relay reduces the reliability of the entire device and increases its cost, since electromagnetic actuators have less reliability and cost more than power and low-current elements of modern integrated electronics.

MKHF 02 N11 / 08

due to the influence of pulsed noise of large amplitude periodically arising in the on-board network of the car

The objective of the utility model is to increase the reliability and cost of the device.

This object is achieved by the fact that a stabilized voltage divider connected to the engine frequency sensor, a frequency meter connected to the output of the stabilized divider, a trigger, a reset input connected to the output of the frequency meter, and a starter traction relay are introduced into the device for controlling the car engine starter, the stabilizer is introduced the supply voltage is differentiable; its link, the driver is controlled, their pulses and the power switch, while the input of the supply voltage stabilizer is connected through the instrument e contacts of the ignition key to the vehicle’s power bus, and a trigger and a differentiator are connected to its output, its link connected to the installation input of the trigger, the output of which is connected to the input of the driver shaper, their pulses, the output connected to the control input of the power key that is connected between the traction the starter relay and through the starter contacts of the ignition key by the vehicle power bus, which is connected through the instrument contacts of the ignition key to the control pulse shaper.

The drawing shows a functional diagram of the proposed device, which contains a motor frequency sensor (DFD) 1, the output of which is connected to a stabilized voltage divider (SDN) 2, connected to a frequency meter (C) 3, which, in turn, is connected to the trigger reset input ( T) 4, the installation input of which is connected to the differentiating link (DZ) 5, the voltage stabilizer (CH) 6, the input of which is connected through the instrument contacts 7 of the ignition key (KZ) 8 to the power bus 9 of the car, and the output of the stabilizer 6 is connected to the differential link 5 and the input of the trigger trigger 4, the output of which is connected to the control pulse shaper (FUI) 10, the power input of which is connected to the instrument contacts 7 of the ignition key 8, and the output of the shaper 10 is connected to the control input of the power switch (SK) 11, power input which is connected through the starter contacts 12 of the ignition key 8 to the power bus of the vehicle 9, and the output of the power key 11 is connected to the traction relay of the starter (TPC) 13.

As a sensor (TCD) 1, a chopper in an electromechanical ignition system or a non-contact Hall sensor in the case of an electronic ignition system 5 can be used.

The divider (SDN) 2 can be performed as a parametric stabilizer on the resistor and zener diode 6.

The differentiating link (DZ) 5 can be performed as a simple RC circuit.

The stabilizer (CT) 6 can be performed as a compensation voltage regulator widely known in the art.

Shaper (FUI) 10 is a voltage pulse amplifier for reliable unlocking of the power switch 9.

The power switch (CK) 11 can be implemented, for example, on a powerful field-effect transistor.

The proposed device operates as follows. To start the internal combustion engine of the car, the contacts 7 and 12 of the ignition key 8 are closed sequentially. When the contacts 7 are closed, the voltage of the on-board power supply bus of the car 9 is supplied to the voltage stabilizer circuit 6 and the shaper (FCI) 10, at the same time from the output of the stabilizer 6 using the differentiating link 5 a setting pulse to the input S of the trigger 4, so that in the absence of engine speed at the output of the trigger 4, a high voltage is set, which creates a control voltage through the driver circuit 10 voltage, unlocking power switch 11. Therefore, when the driving circuit 12, the relay contact circuit 13, the starter switch 8 is connected to the power bus 9 and the starter motor drives the rotation of the vehicle engine. As the engine speed rises, the voltage at the output of the frequency counter 3 increases and, when the trigger threshold 4 is reached, it causes it to tip over, the voltage controlling the power switch 11 disappears, and the starter traction relay 13 is turned off. It is not possible to restart the starter when the engine is running, since trigger 4 is blocked the output voltage of the frequency counter 3. If the engine stalls, restarting will be possible only after turning the ignition key 8 to the position at which the contacts 7 open Xia and circuit de-energized. Then the re-inclusion of contacts 7 leads to the installation of the trigger 4 in the initial state, unlocking the power key 11 and after closing the contacts 12 of the ignition key 8 to turn on the traction relay of the starter 13 and start the car engine.

The presence of a supply voltage stabilizer provides a constant voltage to the control pulse shaper and the trigger, which does not depend on impulse noise and instability of the vehicle power supply voltage, this ensures stability and noise immunity of the control characteristic of the device, and therefore increase its reliability.

Using a power switch and a control pulse shaper allows switching the starting current of the starter traction relay, which also increases the reliability of the device and eliminates the need for an intermediate relay.

applied in integrated design, which determines their low cost.

List of references.

1.US Patent No. 3,573,481.cl. 290-28, 1970.

2. UK Patent No. 1.323.687.CL. ShK, 1970.

3.A.S. USSR No. 672366, 1979.

4.Nikolaychuk P.K., Weinstein A.L. Causes of surge surges in the vehicle's electrical system and the protection of electronic devices from them. Automotive industry. - M .: Transport, No. 2, 1984.

5. Electrical equipment of cars: Reference. A.V. Akimov, O.A. Akimov, S.V. Akimov et al. / Ed. Yu.P. Chizhkova. - M .: Transport, 1993.

6.Sinelnikov A.Kh. Electronic devices for cars. - Energoatomizdat, 1986.

7. Measurements in Electronics: A Handbook. V.A. Kuznetsov, V.A. Dolgov, V.M. Konevskikh et al. - M.: Energoatomizdat, 1987.

8.Alekseenko A.G. Fundamentals of microchip engineering. - M .: Owls. Radio, 1977.

9.Pvanov B.C., Panfilov D.I. Motorola Power Electronics Components. Overview. Moscow Institute of Electronic Technology, 1997.

Patent holders:

vlick V.V. Prudov N.M.

Deryazhny I.E .., D ,, ..,. Rakin A.S.

Kuznetsov S.S. / YuKharitonov S.A.

 Mukhin O.B.

Claims (1)

A car engine starter control device comprising a stabilized voltage divider, an input connected to an engine frequency sensor, a frequency meter connected to an output of a stabilized voltage divider, a trigger, a reset input connected to an output of a frequency meter, and a starter traction relay, characterized in that a voltage stabilizer is inserted into it power supply, differentiating element, driver pulse generator and power switch, while the input of the voltage regulator is connected through instrument contacts The ignition key is connected to the vehicle’s power bus, and a trigger and a differentiating link are connected to its output, connected to the installation input of the trigger, the output of which is connected to the input of the control pulse shaper, the output connected to the control input of the power key, which is connected between the starter traction relay and through the starter the ignition key contacts the vehicle power bus, which is connected through the instrument contacts of the ignition key to the control pulse shaper.