CN204984697U

CN204984697U - Portable gasoline engine ignition coil detector

Info

Publication number: CN204984697U
Application number: CN201520636333.3U
Authority: CN
Inventors: 王跃兴; 李阳
Original assignee: SUN ELECTRONIC CO Ltd
Current assignee: SUN ELECTRONIC CO Ltd
Priority date: 2015-08-20
Filing date: 2015-08-20
Publication date: 2016-01-20
Anticipated expiration: 2025-08-20

Abstract

The utility model relates to a portable gasoline engine ignition coil detector, it is by 14V switching power supply that the characteristic is detection circuitry, it transfers the production frequency 50Hz that band switch's duty cycle regulator constitutes for the pulse width to be had by 50Hz impulse generator and company, the pulse width is adjustable, the range is many pulse width control signal unit of 5V, ignition module and discharge cell are constituteed, 14V switching power supply and 50Hz impulse generator connect 220V alternating current power supply, the signal input part of duty cycle regulator is connected to impulse generator's pulse signal output, the signal output part of duty cycle regulator links the signal input part of the module of igniteing, the positive terminal and negative pole end of being surveyed ignition coil primary is connected respectively with the output of ignition module to the 14V switching power supply DC voltage output end, the discharge cell input is ignition coil high voltage output end, output ground connection even, switching power supply, 50Hz impulse generator, duty cycle regulator, ignition module setting earthing terminal.

Description

A kind of Portable gasoline engine spark coil detector

Technical field

The utility model relates to a kind of automobile industry spark coil detection device, particularly relates to a kind of Portable gasoline engine spark coil detector.

Background technique

Along with science and technology and expanding economy, automobile industry rapid rising, nowadays automobile has become the traffic tool of every household indispensability, and automobile brand is numerous, and to result also in the kind of spark coil varied.Spark coil is as the core component in Auto Electronic Controlled System, and its performance quality is run car load and played an important role.Nowadays Ignition Coils of Gasoline Engines is of a great variety, and test condition is also different, so become the urgent problems such as motor vehicle repair business, maintenance station, spark coil manufacturing enterprise and automobile manufacturing enterprise to the performance judgment of spark coil.In spark coil manufacturing enterprise, the test of spark coil is completed by the expensive professional test platform of complex structure, needs the personnel through professional training to carry out operating instrument.And motor vehicle repair business, these maintenance service departments of maintenance station are bought to the ignition coil equipment of a set of specialty is unrealistic need not yet, if but can erroneous judgement be brought again by artificial judgment, therefore develop a kind of easy to carry, simple to operate, cheap, low and a problem demanding prompt solution can be become by the detection device tested of the spark coil different to multiple test condition to the requirement of test wrapper mirror.

Model utility content

Main purpose of the present utility model is for the problems referred to above, a kind of Portable gasoline engine spark coil detector is provided, can test by regulating the spark coil selecting multiple pulsewidth different to test condition, reach and differentiate product performance quality in time, avoid artificial erroneous judgement, improve detection efficiency and effect easy to carry, simple to operate.

The utility model solves the technological scheme that its technical problem adopts:

A kind of Portable gasoline engine spark coil detector, it is characterized in that its testing circuit is by 14V switch power, by 50Hz pulse oscillator and be connected with the generation frequency 50Hz adjusting the duty cycle adjustment device of pulsewidth selector to form, adjustable pulse width, amplitude is many pulse-width control signals unit of 5V, ignition module and discharge cell composition, described 14V switch power and 50Hz pulse oscillator connect 220V ac power supply respectively, the pulse signal output end of 50Hz pulse oscillator connects the pulse signal input terminal of described duty cycle adjustment device, the control signal output terminal of described duty cycle adjustment device connects the control signal input end of described ignition module, the low pressure that the DC voltage output end of described 14V switch power and the fire signal output terminal of ignition module are connected measured point fire coil primary air respectively inputs positive terminal and low pressure inputs negative pole end, described discharge cell input end connects the secondary winding high-voltage output end of measured point fire coil, and discharge cell output head grounding, described switch power, 50Hz pulse oscillator, duty cycle adjustment device, ignition module all arrange grounding end.

Described many pulse-width control signals unit is that output pulse width can adjust the pulse-width control signal unit selected in the gear of 1.25ms, 1.5ms, 2ms, 2.5ms, 3ms, 3.25ms, 3.5ms, 4ms, 4.5ms, 5ms or 10ms.

The beneficial effects of the utility model are: provide a kind of Portable gasoline engine spark coil detecting instrument can being selected multiple pulsewidth by adjustment, its pulsewidth comprises 11 gears of 1.25ms-10ms scope, can measure multiple Ignition Coils of Gasoline Engines.The utility model can be applicable to multiple occasion such as manufacturing enterprise, automobile manufacturing enterprise, Auto repair shop, maintenance station of spark coil, the instant quality detecting rapid judging point fire coil can be provided to multiple automobile, thus improve the detection efficiency of spark coil, reduce the artificial False Rate to spark coil.Whole apparatus structure is simple, and cost is low, and easy to carry, operation facility, is suitable for and promotes in automobile industry.

Accompanying drawing explanation

Fig. 1 is structured flowchart of the present utility model;

Fig. 2 is the circuit theory diagrams of many pulse-width control signals unit in Fig. 1;

Fig. 3 is control box structural representation of the present utility model.

In figure: 114V switch power, the unit of pulse-width control signal more than 2,3 ignition modules, 4 discharge cells, 4a, 4b spray point, 4c epoxy resin board, 5 measured point fire coils, 61-62 output terminal seat, 63-64 high voltage terminal seat, 7 cabinets.

Below in conjunction with drawings and Examples, the utility model is described in detail.

Embodiment

Fig. 1 illustrates a kind of Portable gasoline engine spark coil detector, as shown in Figure 1, it is characterized in that its testing circuit is by 14V switch power 1, by 50Hz pulse control signal generator and be connected with the generation frequency 50Hz adjusting the duty cycle adjustment device of pulsewidth selector to form, adjustable pulse width, amplitude is many pulse-width control signals unit 2 of 5V, ignition module 3 and discharge cell 4 form, described 14V switch power is by power input 11, 12 and 50Hz pulse oscillator by power input 21, 22 connect 220V ac power supply respectively, the pulse signal output end of 50Hz pulse oscillator connects the pulse signal input terminal of described duty cycle adjustment device, the control signal output terminal 23 of described duty cycle adjustment device connects the control signal input end 31 of described ignition module, the low pressure that the DC voltage output end of described 14V switch power and the fire signal output terminal 32 of ignition module are connected the primary air Lp of measured point fire coil 5 respectively inputs positive terminal 51 and inputs negative pole end 52 with low pressure, the input end 41 of described discharge cell 4 connects high-voltage output end 53, discharge cell output terminal 42 ground connection of the secondary winding Ls of measured point fire coil 5, and described switch power, 50Hz pulse oscillator, duty cycle adjustment device, ignition module all arrange grounding end.As shown in Figure 1, grounding end is respectively 0 end of switch power, 50Hz pulse oscillator and the grounding end 24 of duty cycle adjustment device, the grounding end 33 of ignition module.

Above-mentioned switch power is the commercially available prod exchanging 15W220V/14V.Above-mentioned many pulse-width control signals unit is that output pulse width can adjust the pulse-width control signal unit selected in the gear of 1.25ms, 1.5ms, 2ms, 2.5ms, 3ms, 3.25ms, 3.5ms, 4ms, 4.5ms, 5ms or 10ms.Above-mentioned ignition module is the JK-M009 type ignition module that In Guangdong Province company of Rehabilitation produces.

Discharge circuit on above-mentioned discharge cell comprises and connects the spray point 4a of the high-voltage output end 53 of measured point fire coil 5 by input end 41 and be connected the spray point 4b of grounding end 42, and is connected to the load capacitor C0 between spray point 4a, 4b.Load capacitor C0 value 25PF.

Many pulse-width control signals unit 2 comprises 50Hz pulse oscillator and is connected with the duty cycle adjustment device two-part adjusting pulsewidth selector, is made up of custom circuit.The working principle of many pulse-width control signals unit is as shown in Figure 2: in 50Hz pulse-generator circuit, 220V alternating voltage is depressured to 9V alternating voltage through transformer T1, through commutation diode D1, D2 and filter capacitor C, carry out one way rectifier and be converted to VDC, through three terminal regulator IC1 voltage stabilizing and filter capacitor C1, C3 filtering becomes stable 5V VDC, half-wave voltage after rectification is through resistance R1, R2, R3, R4, filter capacitor C2 and triode Q1, Q2 carries out shaping, the half-wave voltage of 50Hz is changed into square-wave voltage, generate 50Hz pulse signal, and input to the duty cycle adjustment device of described selector.Above-mentioned three terminal regulator IC1 have employed the three terminal regulator that commercially available model is 7805.

Be connected with and adjust the resistance R7-R33 and capacitor C5 that pulsewidth comprises two/monostable flipflop IC2 with the duty cycle adjustment device circuit of selector, peripheral cell potentiometer W1, selector S1, selector S1 connect; and the inverter circuit to be made up of resistance R5, R6, triode Q3, output terminal is also provided with a protective circuit be made up of reference diode D3 and capacitor C4.Two in this example/monostable flipflop IC2 have employed commercially available model be 74LS221 two/monostable flipflop, 50Hz pulse signal inputs to monostable IC 2, selector S1 is 11 gears, resistance R7-R33 correspondence is divided into 10 groups of accesses, like this, can obtain by regulator potentiometer W1 and selector S1 the pulse signal that frequency is 50Hz, amplitude is 5V, pulsewidth is 1.25ms, 1.5ms, 2ms, 2.5ms, 3ms, 3.25ms, 3.5ms, 4ms, 4.5ms, 5ms and 10ms11 gear.This pulse signal is connected to control signal output terminal 23 through the output terminal pin 4 of monostable IC 2 and triode Q3.Ignition module 3 is the circuit based on pliotron Q, input end 31 connecting triode Q base stage, output terminal 32 connecting triode Q collector electrode, this pulse signal, from the input of triode Q base stage, obtains from the control signal output terminal 32 of collector electrode and ignition module the fire signal being supplied to spark coil 5.

Working procedure and the principle of the Portable gasoline engine spark coil detector that the utility model provides are: 220V ac power supply is powered to switch power 1 and many pulse-width control signals unit 2,220V alternating voltage is converted to 14V VDC respectively to ignition module 3 and being powered by test coil 5 by switch power 1, this 14V VDC, when Check point fire coil, connects the low pressure input positive terminal 51 of the primary air Lp of measured point fire coil 5.The 50Hz pulse oscillator connecting many pulse-width control signals unit of 220V ac power supply carries out shaping to the 5V VDC obtained through depressurization and rectification and obtains 50Hz pulsed voltage, be frequency 50Hz through duty cycle adjustment device by 1:1 duty cycle adjustment further, amplitude be 5V, pulse signal that pulsewidth is 11 gears of 1.25ms, 1.5ms, 2ms, 2.5ms, 3ms, 3.25ms, 3.5ms, 4ms, 4.5ms, 5ms and 10ms, this pulse signal is supplied to the low pressure input negative pole end 52 of measured point fire coil 5 primary air Lp as fire signal via ignition module.During detection, the high-voltage output end 53 of measured point fire coil 5 is connected with the input end 41 of discharge cell, and pass through the quality of the discharge scenario judging point fire coil observing spray point 4a, 4b, if spray point is normally struck sparks continuously, without cutoff, illustrate that spark coil normally, if discontinuous sparking or cutoff, illustrates that spark coil damages.

This Portable gasoline engine igniting testing instrument is easy to carry, simple and quick, its pulse control signal pulsewidth has 1.25ms, 1.5ms, 2ms, 2.5ms, 3ms, 3.25ms, 3.5ms, 4ms, 4.5ms, 5ms, 10ms11 gear, therefore under the environment having common 220V ac power supply, just can complete the Ignition Coils of Gasoline Engines test of multiple pulsewidth, judge spark coil performance quality fast.

As shown in Figure 1, Figure 3, in the present invention, discharge cell 4 mainly comprises 1 piece of epoxy resin board 4c, 2 spray points 4a, 4b, high voltage terminal seat 63,64 and the load capacitor C0 of connection measured point fire coil input end 41, output terminal 42 are respectively set, two spray points are fixed on epoxy resin board respectively by high voltage terminal seat 63,64, high voltage terminal seat 64 ground connection, high voltage terminal seat 63 is connected with measured point fire coil output terminal 53 by high voltage wire, load capacitor C0 is also fixed on epoxy resin board, two spray point tips align, and air gap is 9-12mm.In this example, air gap is 11mm, load capacitor C0 value 25PF, is in series by the high-voltage capacitance of 4 100PF.

See Fig. 1-Fig. 3, in practical application, the output terminal seat 61,62 being also provided with Test Switchboard S3 and inputting negative pole end 52 for connecting measured point fire coil low pressure input positive terminal 51 and low pressure is set in voltmeter M1, ammeter M2, main switch S2, circuit in 14V power circuit, during assembling, above-mentioned 14V switch power, many pulse-width control signals element circuit plate, ignition module are loaded in cabinet 7, case front panel arranges needle dc voltmeter M1, indicator type current meter M2, selector S1, main switch S2, Test Switchboard S3 and output terminal seat 61,62.Whole apparatus structure is simple, is convenient to realize, and cost is low, easy to use, if desired vehicle-mounted use, configures the inverter that a 12V VDC is converted to 220V alternating voltage.

The above is only preferred embodiment of the present utility model, not does any pro forma restriction to the structure of model utility.Every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.

Claims

1. a Portable gasoline engine spark coil detector, it is characterized in that its testing circuit is by 14V switch power, by 50Hz pulse oscillator and be connected with the generation frequency 50Hz adjusting the duty cycle adjustment device of pulsewidth selector to form, adjustable pulse width, amplitude is many pulse-width control signals unit of 5V, ignition module and discharge cell composition, described 14V switch power and 50Hz pulse oscillator connect 220V ac power supply respectively, the pulse signal output end of 50Hz pulse oscillator connects the pulse signal input terminal of described duty cycle adjustment device, the control signal output terminal of described duty cycle adjustment device connects the control signal input end of described ignition module, the low pressure that the DC voltage output end of described 14V switch power and the fire signal output terminal of ignition module are connected measured point fire coil primary air respectively inputs positive terminal and low pressure inputs negative pole end, described discharge cell input end connects the secondary winding high-voltage output end of measured point fire coil, and discharge cell output head grounding, described switch power, 50Hz pulse oscillator, duty cycle adjustment device, ignition module all arrange grounding end.

2. a kind of Portable gasoline engine spark coil detector according to claim 1, is characterized in that described many pulse-width control signals unit is that output pulse width can adjust the pulse-width control signal unit selected in the gear of 1.25ms, 1.5ms, 2ms, 2.5ms, 3ms, 3.25ms, 3.5ms, 4ms, 4.5ms, 5ms or 10ms.