DE2700762A1 - KEY ACTUATED DEVICE FOR STARTING AND STOPPING DIESEL ENGINES - Google Patents

Description

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• January 10, 1977

Dr. Horst pupil

Patent Attorney F / 1671

6 Frankfurt / Main 1]
Kaiserstrasse 41.

Claimed priority ;

January 16, 1976, Italy, No. 67O96-A-76

Applicant :

Carlo FERRARI

NICHELINO (Turin, Italy). · ■

Switch-operated device for starting and • stopping diesel engines

The invention relates to a key-operated device, • their key on the dashboard of a motor vehicle or Another work equipment with a diesel engine drive is provided and which is used to start and stop the engine, and to automatically restore the conditions required for a new starting process when the vehicle is switched off.

As is known, the starting and stopping process of a diesel engine depends from the pressure of the injected into the cylinder chamber of the ilotors Fuel and thus the delivery rate of the

, "Injection pump off. In detail, the starting process requires a higher delivery rate of the injection pump than idling, while the fuel injection is completely during the shutdown process 'must be interrupted.

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Starting and stopping the soldering machine have the eleventh oil control, which is customary today, which is brought into the appropriate position by the pah rer by means of an operating handle for requesting the occasion or for I ¹ oil conveying and is automatically held in the position suitable for idling. if the control handle remains unactuated.

The operation of this controller by means of the operating handle is completely independent of the operation of the drive pedals and the position of any key switch on the dashboard to start the glow plugs, the starter and any other equipment connected to the vehicle's electrical circuit.

With this arrangement, however, it is possible for the engine to be started or otherwise operated even when the key is switched off or in an inoperative position.

The method according to the invention is used to remedy this and other deficiencies Device through which the switching key is assigned to the mentioned volume controller in such a way that a starter Sen and turning the engine is only possible if the key is in a certain position while the engine is switched off by pulling out the key. Inserting the key turns the pump regulator into a Bred position, which in turn allows the engine to be started.

This is achieved in that the device according to the invention has an angled lever from which the

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a lever arm is connected to the pump regulator via a pulling element and the other hobolarw imt-aj? the action of awel opposing electromagnets stands, whereby by the excitation of the first electromagnet the angled lever is pivoted in such a way _v; . rd that the pump regulator is brought into a position corresponding to the cold start, while the aforementioned lever is pivoted in the opposite direction by the excitation of the second electromagnet and brings the regulator into a zero delivery position, and in addition the excitation of one or the other electromagnet a first pair or a second pair of time-switched relays controlled y ^ rd and the latter can be activated depending on the position of a key-operated four-position rotary switch.

Each of the aforementioned electromagnets is advantageously fed by an operational contact of a first relay of the relevant Pair whose winding has a normally closed contact of the second Relay of this pair is connected to a capacitor, this capacitor being called a normally open contact th second relay is connected to a fixed contact provided in one of the positions of the rotary switch.

The subject of the invention is now based on the enclosed Drawing explained in more detail. Show it:

pig. 1 in a schematic representation an injection pump for a diesel engine, with the inventive Device according to a first embodiment;

Pig. 2 shows a modification of the angled lever of this device.

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Fig. 1 partially shows an injection pump 1 of known type, in which the delivery rate is determined, for example, by the angular position of pistons with a correspondingly designed side surface. This is Y / angle position
by means of a rack 2, which rotates with these
Piston connected pinion meshes, mutable borrowed. Only one such piston, designated 100, and the associated pinion, designated 3, are shown in the figure.

The rack 2 is between · two end positions that the
Zero delivery position or the Kaltstartstöllung of the Einsprita pump, arranged axially adjustable against the action of springs, not shown, these springs strive to keep the rack in a central rest position, which causes the idle delivery in the injection pump 1.

At one end 5, the rack 2 is connected to the end 7a of the arm 7 via a tie rod 6 at the pivot point 8
pivotally mounted angle lever 101 connected. Of the
other longer arm 9 of the angle lever 101 penetrates with its free end 9a between the. zv / ei opposing surfaces 10, 11 of the armature 12, 13 of two electromagnets 102, 103 a. IiLt 20, 21 are the connections of the field coil of the electromagnet 102 and 22, 23 are the connections of the field coil of the electromagnet 103. the
Armature 12, 13 and coils 20-21 and 22-23 of the two
Electromagnets form a common vertical axis 25,

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the in the plane dec Y / inke blows Is 101 perpendicular to its. Arm 9 is arranged. The electrical verb include «Iqx · FoIdspulen is carried out in such a way that the over one pressures connected armature 12, 15 opposite to the lever arm 9 work. For this purpose, the connection 20 of the field coil of the electromagnet 102 and the connection 22 of the field coil of the .Electromagnet 105 with the plus pole 45 of a battery 44 - this can be the normal battery of the vehicle or work equipment - via the working contact 27 of a first Relay 29 or via the normally open contact 26 of a second relay 28 connected; the connections 21 and 25, however, are connected to the linear pole 45 of the battery 44.

The connection 54 of the movable contact 52 is also connected to the positive pole 45 of the battery 44 Four-position rotary switch 50, which is arranged on the dashboard of the vehicle and can be operated by means of a key 51 is.

The first, designated 14 position of the rotary switch 50 is independent of the electrical circuit of the vehicle and only allows the key to be inserted and removed. However, these two operations are not possible in the other positions of the rotary switch 50, which are determined by the contacts 15, 19 and 17 and each of the Position for idling pumping of the pump, commissioning the glow plugs and activation of the starter. Rtickhohlfedem, not shown, cause the automatic Return of the movable contact 52 in die.zweite

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g, v / onn der Schlüssol 31 rait dom Drohochulfcor in third or fourth position left v / ird.

The contact 15 of the second switching era te llung leads to the circuit board of a capacitor 37 u ¹¹ ^ ^zxx an inclusion of the field coil 35 of a third relay 36 , the other connection of which is connected to the line pole 45 of the battery 44.

The switch is via the normally open contact J8 of the relay 36; contact 15 is also connected to the circuit board of a second capacitor 39, which leads via a break contact 40 of the relay $ 6 to connection 41 of the field coil 29a of a heater 29, the other connection 42 of which is connected to the other circuit board of the capacitor 37 and to the input of a diode 47 is connected. The output of which is connected to the Lanus pole 45 of the battery 44. The capacitor 37 and a resistor 46 form a timing circuit for the relays 29 »36, while the diode 47 determines the paths for the passage of current. A feed circuit 60-61 for the glow plugs leads to contact 19 of the third position of switch 30. This contact is also placed on one connection of the field coil 48 of a fourth relay 49, the other connection of which is connected to the line pole 45 of the battery 44 and to a printed circuit board of a third capacitor 50. The same circuit board goes over one. Normally open contact y \ dos relay 49 to a circuit board of a fourth capacitor 52, which via a normally closed contact 53 of the relay 49 also with a connection 54 · the field coil 28a of the relay; 28 is in connection. The other connection ^ this field ■? coil leads to the other circuit board of the 3 capacitor 52

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and über oinon V / iderctand 57 wr others. Loitorplatto doe capacitor 50 as well as to the input of a second diode 57 »whose output is connected to the Linus pole of the battery. The capacitor 50, the resistor 56 and the diode 57 exert the same punctures on the relays 28, 49 as the capacitors 37, the resistor 46 and the diode 57 exert on the relays 29, 36. Finally, the fixed contact 17 of the fourth position of the rotary switch 30 is connected to the electric starter 63.

The device described operates y / ie follows: zuia starting the engine, the key 31i, the first position of the switch 30 ⁿ is inserted and then rotated to the drit te switch position, in which co-operates the movable contact 32 with the fixed contact 19th In this state, current flows through the supply circuit 60-61 of the glow plugs, which are heated as a result, and also through the coil 48 of the relay 4-9. The excitation of the coil 48 causes the contact 51 to close, which is why the capacitors 50 and 52 are charged.

As soon as the starting temperature is reached, the rotary switch 30 is brought into the fourth position by means of the key 31, in which the cooperation of the contacts 32 and 17 'causes the starter 63 to be switched on. This process prevents the flow of current through the coil 48 and consequently the contact 51 is opened. The discharge of the Kon capacitor 52 through the coil 28a of the relay 28 causes the closure of the contact 26 and consequently the excitation of the

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Coil of the iSlektromaüneten 103, whose beekeeper 13 is following adjusted down and the arm 9 of the Ho "bo Is 101 in the downward movement lait takes. The pivoting of the lever causes the axial adjustment of the tie rod 6 and the toothed rack 2 to the left, whereby the latter that of the ■ lassförderung assumes a corresponding position. As soon the charge of the capacitor 52 is exhausted, de-energized the electromagnet 105 and now only through their Toothed rack 2 ″, which is acted upon by springs, returns to its idle position corresponding to the idle conveyance.

About the pull rod 6 is the. Movement of the rack 2 transferred to the lever 101, which is why this also swivels back into its rest position with the horizontal arm 9.

After the start has taken place, the key 31 is released so that the rotary switch 30, as already mentioned, automatically turns back into the second position. In this condition Current flows through the coil 35 of the relay 36, the Contact 38 closes, contact 40 opens and capacitors 37 »39 are charged. As a result of the opening of the contact 40 de-energizes the relay 29 and the elec Tromagnet 102 remains in the idle state, as does the lever 101 and the rack 2.

This state lasts as long as the Hotor is in operation. To turn off the motor, the rotary switch 30 is set to brought the first position, whereby the flow of current through the coil 35 is interrupted, the contact 38 is opened and the Lontakt 40 is closed. As a result, the capacitor 39 discharges through the coil 29a of the relay 29, the Contact 2? closes and the electromagnet 102 is excited, whereby its armature moves upwards and the arm 9

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IJL-

des I-lebcls 101 takes what τ / iederun the shift dei · 2iulnii3l3aii £ b 2 naeli 3? eelit53 In die der Irullfrage the pump 1 has the corresponding end position.

The rack 2 remains in this position until the capacitor 59j is fully discharged, after which the armature 12 of the electromagnet 102 returns to the rest position and also that which is no longer acted upon by the lever 101 Rack 2 in turn assumes its rest position. So the engine is ready for a new start gear ready.

The lever geiaäss 5 ¹ Ig. 2 v / eist a bend that determines the working position.

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Claims (5)

Il Claims li.jKey-operated device for starting and stopping diesel engines, in which an axially adjustable conveyor control of the injection pump can assume a rest position that causes the pump to deliver corresponding to the idle, and two working positions, which are determined by the end positions of the regulator movement on the opposite side The opposite sides of the rest position are located and correspond in each case to the cold start conveyance or the ITull conveyance of the pump, characterized in that it has a lever (101) of which one of the lovelarms (7) is connected to the mentioned controller (6) via a pull rod (6). 2) is connected and the other lever arm (9) is under the action of two opposing electromagnets (10.3, 102), v / obei by the excitation of the first electromagnet (103) the lever (101) is pivoted in such a way that the Controller (2) assumes a position corresponding to the cold start, while the excitation of the second electromagnet (102) d he mentioned lever (101) is swiveled in the opposite direction and brings the controller (2) into a coolant delivery position of the pump (1), and v / obei also the excitation of one or the other electromagnet (IO3, 102) by a first pair (28 , 49) or by a second pair -11- 709829/0330 ORIGINAL INSPECTED (29 »36) is controlled by timed relays and the latter depending on the position of a Vior that can be switched by the aforementioned key (31) Position switch (30) can be activated. 2. Device according to claim 1, characterized in that each of the mentioned slektromassnets (103, 102) is fed by a normally open contact (26, 27) of a first relay (28, 29) of the relevant pair, v / obei the field coil ( 28a, 29a) this relay is connected via a normally closed contact (53, 40) of the second relay (49, 36) of this pair to the terminals of a capacitor (52, 39) and this capacitor is connected to a "normally open" contact (51, 38) of the mentioned two th relay (49, 36) is placed on a fixed contact of the rotary switch (19, 15). 3. Apparatus according to claim 1 and 2, characterized in that the rotary switch (30) in its first position / aas allows insertion and withdrawal of the key (31), in its second position (15) the coil (35) of the zv / eiten Relay (36) of the mentioned second pair with a power source (battery 44) connects, in its third position (19) the field coil (48) of the second relay (49) of the mentioned first pair and the circuit (60-61) the glow plug connects to the power source (44), and in its fourth position (17) applies the starter (63) to this power source (44), and that the rotary switch (30) automatically switches to the second position (15) 709829/0330 -12- returns when he is no longer from the key (51) in dar · drAtitan (19) or similar 03? fourth (17) otoliunt * Held is. 4. The device according to claim 1 to 5, characterized p nzeichnet, -eken, the ^Kondensatoi> that s (52, 39) through the field coil of each pair discharged once (28a;; 29a) of said first relay (29 28) the rotary switch (30) position is or adjusted by the second (15) into the first (14 x) position of the third (19) fourth in <Ü ^e (17) wherein the exhaustion of the charge of these capacitors (52; 39 ) causes the return of the liebeis (101) and thus also of the controller (2) of the pump (1) to the rest position. 5. Device according to one of the preceding claims, characterized in that the slektromagnets (IO3, 102) are de-energized as long as the rotary switch (30) is in its second position (19). 709829 / C3 30