CN1048788C

CN1048788C - Electromechanic integrated (full) contactless ignitor for automobile

Info

Publication number: CN1048788C
Application number: CN94108808A
Authority: CN
Inventors: 唐行伦
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-02
Filing date: 1994-08-02
Publication date: 2000-01-26
Anticipated expiration: 2014-08-02
Also published as: CN1124819A

Abstract

The present invention discloses an electromechanical integral automobile (whole) contactless igniter which is mainly composed of an igniter midbody 7 and a sensor coil 1, a timing rotor 2, an electronic amplifier component 3 with a magnetoelectric pulse, a high-voltage ignition coil 4 with a closed magnetic circuit, a high voltage joint 8, a vacuum spark advancer 5 and a linking rod 6 thereof, and a movable floor 9 which are arranged in the igniter midbody 7. The present invention has the advantages of small size, compact structure, light weight, good performance, reliability, exempt maintenance, and easy installation and adjustment.

Description

The dynamoelectric integrated vehicle contactless ignitor

The present invention relates to automobile electrical appliances, more specifically to a kind of automobile of electromechanical integration completely without the contact ignition mechanism.

The widely used automobile igniter of prior art has platinum point firearm and ignition, the former comes the primary current of control ignition coil as the contact with platinum, make the secondary induction of spark coil go out high pressure, realize igniting, but have ablated, often maintenance or the replacing in platinum contact, the wearing and tearing of used bakelite and camshaft can influence the timing of igniting; The latter replaces former platinum contact with electronic component and circuit thereof, but has the shortcoming that discrete component is more, aerial lug is complicated.These two kinds of conventional point firearms will connect by the high and low pressure lead respectively, could form complete igniter.And deficiencies such as the distributed capacity of high-voltage conducting wires is big, and loss is big, volume is big, reliability is low.

Dynamoelectric integrated vehicle ignition (patent No. is 93222438.5) though can overcome above-mentioned shortcoming, is not broken away from the pattern (i.e. the high pressure branch system of disposition of being made up of split fire head, center carbon brush, distributor cap) that high pressure is assigned the contact yet

The object of the present invention is to provide and to overcome the prior art deficiency, the dynamoelectric integrated vehicle contactless ignitor.

The object of the present invention is achieved like this (is example with four cylinder four stroke engine), promptly construct the automobile contactless ignitor of an electromechanical integration, comprise body 7 in the igniter of cast aluminium, the vacuum ignition advancer 5 at body 7 middle parts in being located at, the closed magnetic circuit high-voltage ignition coil 4 of the both sides of body 7 in being located at, the magnetoelectricity pulsed electron amplifier block 3 of both sides in addition of body 7 in being located at, also be provided with the movable floor 9 that shifts to an earlier date the small angle the done rotation of linkage rod 6 and 5 couplings of described vacuum ignition advancer by vacuum firing in the middle body 7, described movable floor 9 is provided with the sensor coil assembly 1 that is mutually 90 ° of angles, and the timing rotor 2 that is installed in described igniter rotatingshaft middle part, described sensor coil assembly 1 is by magnet 11, the clamping plate 14 of described magnet 11 1 sides, the iron core 12 of described magnet 11 opposite sides, and place the sensor coil 13 on the described iron core 12 to form; The clearance distance of the end face of the iron core 12 of the boss of described timing rotor 2 and described sensor coil assembly 1 is about 0.5 millimeter.Described magnetoelectricity pulsed electron amplifier block 3 comprises transistor BG1, be connected across BG1 penetrate the collection interpolar capacitor C 1, the described sensor coil 13 of cross-over connection by dorsad the serial connection two reference diode D ₂, D ₃Slicing circuit, an end of this slicing circuit and emitter-base bandgap grading and the power cathode of BG1 join, the described slicing circuit the other end and diode D ₁Positive pole joins, and diode D ₁One end of negative pole and BG1 base stage, resistance R 1 joins, and described resistance R 1 the other end and 4 elementary joining of described spark coil, the other end that described spark coil 4 is elementary and the collector electrode of BG1 join.

Its feature of dynamoelectric integrated vehicle contactless ignitor of the present invention also is, utilize the work characteristics of four stroke engine, and be designed to shared one group of described sensor coil assembly 1 of two corresponding cylinders and described magnetoelectricity pulsed electron amplifier module 3, and described closed magnetic circuit spark coil 4, the igniting high pressure of each cylinder is directly introduced by the high pressure joint 8 (each spark coil has two high joints) that is located on the described spark coil 4, realize that the igniting high-voltage contact-less distributes, for four, a whole set of igniter is by two groups of described sensor coil assemblies 1 and described magnetoelectricity pulsed electron amplifier module 3, and described spark coil 4 is formed.(six is then formed by three groups).

Dynamoelectric integrated vehicle contactless ignitor of the present invention has compact structure, in light weight.Non-maintaining, be easy to install, adjust, and because spark coil adopts the igniting high pressure of closed magnetic circuit design and each cylinder directly by the secondary mode of drawing of spark coil, the distributed capacity that has reduced high-voltage conducting wires has further improved ignition performance and reliability.

With reference to accompanying drawing, embodiments of the invention are described further, in the accompanying drawing:

Fig. 1 is the schematic diagram of dynamoelectric integrated vehicle contactless ignitor of the present invention;

Fig. 2 is the structural representation of dynamoelectric integrated vehicle contactless ignitor of the present invention;

Fig. 3 is the structural representation of the sensor coil assembly 1 in the dynamoelectric integrated vehicle contactless ignitor of the present invention;

Fig. 4 is the electrical schematic diagram of dynamoelectric integrated vehicle contactless ignitor of the present invention.

Table 1 is four kinds of journey engine operational cycle of four-cylinder table:

Fig. 1 has provided the schematic diagram of magnetoelectricity pulsating electronic igniter of the present invention, according to electromagnetic induction principle, when rotating, timing rotor 2 can in sensor coil 1, produce corresponding alternating signal in magnetic field, utilize the conducting of this SC sigmal control transistor BG1 and end, thereby make the primary current of spark coil 4 disconnected, continuous and light a fire.

When timing rotor 2 does not rotate, any variation can not take place in magnetic flux, thereby can not produce induction electromotive force on the sensor coil 1, when timing rotor 2 begins to rotate, variation has taken place in the air gap between its boss and the sensor coil 1, variation has also taken place in the magnetic flux by sensor coil 1, thereby goes out electromotive force on sensor coil 1.

For the increase and decrease of such magnetic flux, make the electromotive force that just can induce alternation on the sensor coil.When the rotor boss near and when leaving away the sensor coil center, induction electromotive force is the highest.

In conjunction with Fig. 4, the operating voltage E of BG1 _pBe to be connected on the electric resistance partial pressure of R1 on the automobile power source E and sensor coil 1 and to decide, when engine running, on sensor coil 1, can respond to the induction electromotive force of alternation, when signal voltage when direction changes, the voltage that P is ordered is greater than E _PThe time, the BG1 conducting, then the primary air of spark coil 4 has electric current to pass through.The voltage that induces when sensor coil 1 is when negative direction changes, and the voltage that P is ordered is less than E _PThe time, BG1 ends, and then the primary current of spark coil 4 is cut off, and produces high pressure on secondary winding, and motor turns round continuously, and sensor coil 1 can induce corresponding fire signal according to the timing of motor.

D ₂And D ₃Constitute the slicing circuit of reference diode, because the size of signal voltage is directly proportional with the variance ratio of magnetic flux in the unit time, thereby also increase with the increase of engine speed, engine speed is high more, signal voltage on the sensor coil 1 is also just big more, this excessive signal voltage, work to BG1 is disadvantageous, must manage the restricting signal output voltage for this reason, the mutually voltage-stabiliser tube of reversal connection of di-is also opened at the two ends of sensor coil, makes the positive and negative side of its alternating signal voltage that can induce at sensor coil 1 can both amplitude limit.

According to the requirement of engine ignition timing, (with four cylinder four stroke engine is example, and promptly engine rotation is 720 °, 360 ° of igniter timing rotor rotation; Ignition order is made as 1-2-4-3; Then corresponding cylinder is respectively first cylinder and the 4th cylinder, second cylinder and the 3rd cylinder; Two groups of sensor coils are marked with 1A and 1B respectively: magnetic pulse electronics amplifier module is marked with 3A and 3B respectively: spark coil is marked with 4A and 4B respectively; To show the differentiation group.Two groups of sensor coil 1A and 1B arrange with 90 ° of angles; Two boss of timing rotor 2 are 180 ° mutually, and are made as 2C and 2D respectively).When first cylinder needs ignition operation, adjustment makes that the boss 2C of timing rotor is corresponding with sensor coil 1A, can produce fire signal this moment on sensor coil 1A, by magnetic pulse electronics amplifier module 3A and spark coil 4A, produce the igniting high pressure, and cause first cylinder and the 4th cylinder spark plug respectively by high pressure joint 8 and high voltage wire, because the structure of spark coil and the mode of connection of high pressure, two respective cylinder spark plugs be connected to serial connection, this two cylinder spark plug is lighted a fire simultaneously neither can influence the normal operation of motor, also can not do sorrow mutually.(associative list 1, when first cylinder igniting outburst, corresponding the 4th cylinder is in exhaust and stops).When motor is rotated further 180 ° (90 ° of timing rotor rotation), promptly second cylinder is lighted a fire on the occasion of timing rotor boss 2C corresponding to sensor coil 1B, fire signal is put assembly 3B and spark coil 4B, is produced the igniting high pressure through the magnetic pulse electronics, and causes second cylinder and the 3rd cylinder spark plug respectively by high pressure joint 8 and high voltage wire.(associative list 1, when second cylinder when outburst igniting, the 3rd cylinder is in exhaust and stops) motor is rotated further 180 °, and (90 ° of timing rotor rotation) timing rotor boss 2D answers the 3rd cylinder igniting outburst just corresponding to sensor coil 1B.Go round and begin again, start continuous running.

Fig. 2, Fig. 3 have provided the structure of electromechanical integration igniter and the structure of sensor coil wherein.

Table 1:

Claims

1, a kind of automobile contactless ignitor of electromechanical integration, it is characterized in that comprising body (7) in the igniter of cast aluminium, be located at the vacuum ignition advancer (5) at middle body (7) middle part, be located at the closed magnetic circuit high pressure spot coil (4) of the both sides of middle body (7), be located at the high-voltage output connector (8) on the spark coil (4), be located at middle body (7) the magnetoelectricity pulsed electron amplifier block (3) of both sides in addition, also be provided with the movable floor (9) that shifts to an earlier date the small angle the done rotation of linkage rod (6) and described vacuum ignition advancer (5) coupling by vacuum firing in the middle body (7), described movable floor (9) is provided with the sensor coil assembly (1) that is mutually 90 ° of angles, and the timing rotor (2) that is installed in described igniter rotatingshaft middle part, described sensor coil assembly (1) is by magnet (11), the clamping plate (14) of described magnet (11) one sides, the iron core (12) of described magnet (11) opposite side, and place the sensor coil (13) on the described iron core (12) to form.

2, dynamoelectric integrated vehicle contactless ignitor as claimed in claim 1, its feature are that also the clearance distance of the end face of the iron core (12) of the end of described timing rotor (2) and described sensor coil assembly (1) is 0.5 millimeter.

3, contactless some device of dynamoelectric integrated vehicle as claimed in claim 1, its feature also is, described magnetoelectricity pulsed electron amplifier block (3) comprises transistor BG1, be connected across the capacitor C1 of BG1 emitter, inter-collector, the described sensor coil of cross-over connection (13) by dorsad the serial connection two reference diode D ₂, D ₃Slicing circuit, an end of this slicing circuit and emitter-base bandgap grading and the power cathode of BG1 join, the described slicing circuit the other end and diode D ₁Positive pole joins, and diode D ₁One end of negative pole and BG1 base stage, resistance R 1 joins, and described resistance R 1 the other end and elementary joining of described spark coil (4), the other end that described spark coil (4) is elementary and the collector electrode of BG1 join.