CN102047093B

CN102047093B - Engine electric pulse and voltage probe

Info

Publication number: CN102047093B
Application number: CN2009801203617A
Authority: CN
Inventors: 埃里克·戴维·卡克森
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-02
Filing date: 2009-04-01
Publication date: 2012-04-04
Anticipated expiration: 2029-04-01
Also published as: AU2009230878B2; CN102047093A; NZ588944A; AU2009230878A1; WO2009121134A1

Abstract

A diagnostic apparatus for simultaneously analyzing positive and negative voltages and electrical pulses within an engine management system, the diagnostic apparatus comprising: a main housing case in which an encapsulated electronic circuit is provided, which is connected with two or more individual indicator lights and can be externally seen from the main housing case by a user; the circuit is connected with the positive terminal and the negative terminal of the power supply; the electronic circuit is also connected with the first probe and the second probe; whereby when the rubber boot is removed from the back of the injector plug of the engine being analyzed, the boot is removed from the back of the injector such that at least two wires exposed from the back are exposed to the injector plug, whereby when the engine is started, said first probe is disposed on one of the exposed wires of the injector plug, thereby illuminating one of the indicator lights from the electrical circuit of the main housing box; and the second probe is disposed on the other exposed wire at the back of the injector plug thereby illuminating another indicator light, the circuitry of the main housing being arranged such that once the first and second probes have been disposed on each of the respective exposed wires of the injector plug, one indicator light is intermittently illuminated to represent a pulsating pulse and the continuous illumination of the other light represents a constant voltage from the engine being analyzed.

Description

Engine electric pulse and voltage probe

Technical field

The present invention relates to be used for to analyze simultaneously in the engine of automobile and relevant engine management system just/diagnostic device of negative voltage and/or just/negative.

More particularly, the present invention relates to a kind of portable and diagnostic device easily, it can be used at the voltage and the electric pulse that at length detect under the situation that can not hinder the engine operation during the diagnostic analysis around automobile or the engine.

Background technology

It will be appreciated by those skilled in the art that voltage level and electric pulse continuity through engine management system turnover engine are influential for definite engine optimum operation situation.

If voltage level and/or the electric pulse of turnover engine become and interrupt or depart from the setting level, then as desired, engine will can not move best.

Engine go wrong or even optional be on engine, to safeguard when confirming its operation conditions, then need have the method for the electrical problems of the preferred service condition that can diagnosis can influence engine.

At present; If those skilled in the art to confirm relevant with engine current, non-existent or interrupt just/negative voltage and/or electric pulse; Adopt the technician of common diagnostic instrments or equipment will interrupt the service condition of engine; Because instrument self must be connected and accomplish immediately this work with engine for the test of being carried out, so some things must be thrown off to be provided for the electric connecting point of this instrument with engine.

For example, the Traditional engine diagnostic device has adopted " noid lamp ".

Conventional noid lamp detection system comprises for example bulb etc. of voltage-level detector, and it is connected with electric fuel injection control unit.

In order to connect, one of them fuel injector must break off with engine, thereby its voltage source of supply and/or electric pulse are connected with the noid lamp.

But; As what it will be understood by those skilled in the art that,, mean that then people must break off the thrower connector if people adopt the noid lamp to locate or be isolated in the electric pulse in the engine management system as diagnostic device; Thereby its electric contact can provide signal to bulb; Analyze thus, in case engine brings into operation, in fact the engine of then testing will can not move under drive condition.

Be effectively, adopt the noid lamp system, in fact we throw off the part power operation with isolated fault.People's inquiry, when in fact engine did not desirably move under the driven condition like people, if we are just at the breaking part engine, whether we can fully diagnose or analyze easily and be isolated in in-engine problem cause.

As introduce; Noid lamp detection system comprises for example bulb etc. of voltage-level detector; It is through breaking off at least one thrower connector with self being connected on the electric fuel injection control unit; When voltage being provided for the noid lamp, the intermittently flicker or luminous of noid lamp, thus make the user can infer that this system's operation is normal.

Adopt common noid lamp,, be illustrated in then that some thing is out of order in the electronic control unit system, and will need then further to isolate or the cause of definite this fault if this lamp is not luminous or flicker.

However, it will be appreciated by those skilled in the art that if that is the best mode that it can be done, then there is real perceptible problem in this existing noid lamp system.

At first, you must extract thrower so that be electrically connected this noid lamp from electric wiring.Therefore, engine then must move under the situation of a few cylinder at least, therefore the analysis of engine is not carried out under the suitable service condition of engine.

Can be contemplated that this automobile will move roughly, rather than under desired fine setting level, move under the situation of a few cylinder, this makes that fault diagnosis is particularly difficult and bothers.

Also have importantly, conventional noid lamp himself designs not enough, because it just just glimmers when having positive voltage and negative voltage.Therefore, it is merely able to carry out a function, and will be not can not distinguish between not the existing of the continuity of continuous electric pulse and positive signal.

In order to attempt to solve and some relevant problems of this simple noid lamp diagnostic tool; Wherein said diagnostic tool helps to confirm that fuel injector has electric energy and engine management system suitably they lights through the very rough photovoltaic meter of sharpness; This provides positive electric energy to background; It connects self then, and optional is existing more ripe method, for example in the method described in the British Patent Application GB2328714.

In patented claim GB2328714, Mark Howarth describes and provides a kind of automotive diagnostic installation, and it allows manually control electronically controlled fuel injector.

As describing in detail in the document; How Mark Howarth will comprise main control unit if having described this equipment, this unit connect through electric wiring will substitute when being connected with the thrower of engine have now and the direct-connected control unit of engine connector of thrower connector in one or more.

Especially, the present invention not only provides the diagnostic device that is used for fault detect, and the device of the ratio that wherein is used for overcoming or controls the fuel that is used to light a fire and potpourri in fact also is provided.

This automotive diagnostic installation has not only been accomplished the analysis in the engine control of management system, and in fact becomes the part of engine arrangement.

This unit is physically becoming the part of engine operational conditions; And when operating in its access and with engine; It provides a kind of device; This device manually control fuel injector is opened number of times so that improve and/or reduce fuel level, perhaps through letting vehicle diagnosis fuel control machine regulate according to the particular sensor reading that in the circuit of the main control unit of equipment, provides to fuel and air mixture and carry out according to automatic mode.

The automotive diagnostic installation of these kinds is professional instrument; Their costlinesses; And need the technical ability knowledge of wherein application etc.; And the same with this basic noid lamp system, for diagnostic device self can be moved, self interrupts the operation of engine so also need this equipment to pass through the breaking part fuel injection system.

As top introduction several times; Other part of breaking part fuel injection system or engine management system of ability must move through to(for) diagnostic device; Its disadvantageous one side is; In case you break off the part engine, then this engine will equally not worked under the driven condition for another example or driven.

Therefore; BrP GB2328714 is the improvement parts of vehicle diagnosis instrument to a great extent; This diagnostic instrments designs the fuel quantity that is used for changing injector pulse number of times or increase or reduces to offer engine as said, and has just avoided the needs to lambda sensor in test engine operation or during attempting to be isolated in in-engine fault etc. as people.

But; As what those skilled in the art will recognize that; Need send signal for control unit of engine or management system with lambda sensor; Remain on the setting at the ratio of guaranteeing air and fuel, thereby between the relevant stroke of engine, remain on the correct mixing of air inlet and combustion phases air and fuel.

Though the advanced form of this automotive diagnostic installation the manual control of injector pulse number of times and/or the fuel quantity that increases or reduce to enter into engine with improve the air mixture fuel ratio manually/have benefit aspect the motor-driven automatic and adjustable joint property; But it still can not provide a kind of simple portable diagnostic equipment; It can be used for simply detecting simultaneously in engine management system just/negative voltage and/or electric pulse; In this system, analyze, thereby this equipment can not interrupt the whole driving service condition of engine.

Therefore; In this correlative technology field, still need a kind of convenience, portable, easy-to-use diagnostic device; It not only can accomplish analysis under the situation of not interrupting power operation, and can analyze simultaneously positive and negative voltage and electric pulse in engine and/or complementary engine management system simultaneously.

Therefore, one object of the present invention is to provide a kind of portable diagnostic equipment, and it can analyze positive and negative voltage and/or electric pulse in engine management system simultaneously, and himself is the part of management system.

To understand other purpose of the present invention and advantage through this instructions of comprehensive reading.

Summary of the invention

Therefore, in a form of the present invention, a kind of generating positive and negative voltage and diagnostic device of electric pulse that is used for analyzing simultaneously in engine management system is provided, said diagnostic device comprises:

The main casing case is provided with the packaging electronic circuit therein, and it is connected with two or more independent pilot lamp and can from said main casing case, be seen outside by the user;

Said circuit is connected with the positive and negative terminal of power supply;

Said electronic circuit also is connected with second probe with first probe;

Thereby when when rubber sleeve is removed at the back side of the thrower connector of the engine analyzed, from the back side of thrower cover is taken off and to be made at least two wiring of exposing be exposed to the thrower connector from the back side,

Thereby when engine start, said first probe is arranged in one of them exposure wiring of thrower connector, lights one of them pilot lamp from the circuit of main casing case thus;

And second probe is arranged on another at the place, the back side of thrower connector and exposes in the wiring, lights another pilot lamp thus,

In case first probe and second probe have been arranged on each of corresponding exposure wiring of thrower connector; Then the circuit of main casing so is provided with; I.e. luminous off and on expression heartbeat of pilot lamp, and the continuous luminous expression of another lamp is from the constant voltage in the engine of analyzing.

Preferably, the positive probe that first probe is and wants continuously luminous pilot lamp to be connected, and second probe is and the negative probe that will luminous off and on pilot lamp be connected.

Preferably, the existence of luminous pilot lamp provides and has demonstrated the analysis that has positive voltage continuously.

Preferably, luminous pilot lamp is a red light continuously.

Preferably, the existence of the pilot lamp of intermittence or pulsation representes to exist negative.

In optional form of the present invention, the positive probe that first probe is and wants luminous pilot lamp intermittently to be connected, and second probe be and the negative probe that will continuous luminous pilot lamp be connected.

Preferably, intermittently the existence of alight provides expression to have the analysis of positive pulse.

Preferably, the existence of luminous indicating lamp representes to exist negative voltage continuously.

The advantage of this layout is, the simple portable diagnostic equipment of the operation driving condition that needn't interrupt engine is provided first.The situation of the diagnostic device that described in the present invention portable diagnostic equipment does not need to be provided like noid lamp and British Patent Application GB2328714 is the same to be used with engine management system " inline or connect ".

Portable diagnostic equipment of the present invention is not engine management system itself, and it is a kind of instrument simple and easy to use, and it can analyze generating positive and negative voltage and electric pulse well simultaneously.

Different with noid lamp with the ability of only when the generating positive and negative voltage both exists, just glimmering; The advantage of portable diagnostic equipment of the present invention is; Pulsating lamp can not exist, exist or interrupt corresponding to electric pulse, and another lamp of this equipment can provide the information that whether has required continuous positive voltage about engine management system in position.

Therefore; Through both are arranged in the exposure wiring of from the thrower connector, exposing with positive and negative probe simply; Thereby the portable diagnostic equipment and instrument can not interrupt engine, but the most important thing is that it can form multinomial function now easily; But not as in the situation of noid lamp, only when having all voltages, just glimmering, and be to use the continuous luminous of a lamp and another pulsed illumination that multi-functional characteristic is provided.

This portable diagnostic equipment can spray in the test at motor vehicle fuel now provides improved troubleshooting analysis.This equipment is owing to have better efficient, function, availability and characteristic as introducing at least; So can substitute existing noid lamp system now; Thereby it in fact not only self breaks away from the part of engine, and it can also just tested simultaneously and discern/existence of negative pulse and electric pulse simultaneously.

As top the introduction, this equipment will not need the user to extract anything any part of perhaps breaking off engine just can to analyze.Preferably, what all need be done just removes rubber sleeve from the back of thrower connector simply, so that two wiring are exposed, thus the contact above that easily of positive and negative probe.

The road is the same as is known to the person skilled in the art, and the present invention will be contained such embodiment, wherein in just pulsation situation, possibly adopt a probe, and what then car industry should change from the negative pulse system is the design of electronic fuel injection system.

In another form of the present invention, housing unit comprises two independent shells, and the circuit of himself each all have wiring at the place, end that is connected with probe, and the independent lead-in wire of wiring is used for engaging respectively the negative pole or the positive pole of power supply.

The same with other form of the present invention of top introduction, in case diagnostic device has been accomplished its analysis, if there is negative pulse, lamp will glimmer, and the lamp on the adjacent housings unit will be connected and operation or luminous continuously, thereby represent the existence of permanent positive voltage.

Preferably, the user of this equipment can see negative pole and constant positive voltage easily.

If negative voltage is not pulsed, then the user will recognize and exist disconnection or part engine management system to have the fault of some type in the specific wiring in engine.If have no constant positive voltage, then will be expected at the interruption that has some type in the wiring electric wiring.

Preferably, diagnostic device has two probes, promptly be arranged in associated shell unit and the red positive probe that will luminous red light be connected with the black negative probe that will luminous green light be connected.

Preferably, the existence of luminous red light provides and has demonstrated the analysis that has positive voltage continuously.

Preferably, the green light of existence intermittence or pulsation is represented the existence of negative voltage and/or electric pulse.

Preferably, when in engine or engine management system, having fault, the user will notice to have only a lamp with luminous, not have alight to represent that this desired operating conditions is a fault.

Preferably, the power supply that is used for positive and negative electrode is provided by 12 volts vehicle battery.

Preferably, each housing unit comprises electric control circuit, and this circuit also comprises the power supply of himself, accumulator preferably, thus this unit can be used as voltage probe and/or continuity test device.

Preferably, housing unit comprises an extra lamp and circuit, so that luminous to confirm for part engine, engine management system or the vehicle tested, in particular range, to exist or do not exist reference voltage when test.

Preferably, in fact the positive and negative lead-in wire that leads to power supply is attached in 12 volts the housing of cigarette light adapter, can it be used in current just in the vehicle of test engine then.

Preferably, circuit has the positive and negative web member of the power supply that leads to power supply, and it is respectively and is used for the clamp that is connected with positive and negative electrode in automobile storage battery.

Description of drawings

Fig. 1 is the skeleton view of a preferred embodiment of the invention, demonstrates single housing, the positive and negative clamp that wherein is provided with corresponding positive and negative probe and is connected with power supply.

Fig. 2 is an another preferred embodiment of the present invention; Wherein in fact the main casing of Fig. 1 is divided into two unitary part simply; The negative clamp that part comprises positive probe and is connected with power supply, wherein another separate housing is arranged and is comprised negative probe and the positive clamp that is connected with the plus end of power supply.

Fig. 3 is a system schematic, on engine and complementary engine management system, uses portable diagnostic equipment to come to analyze simultaneously generating positive and negative voltage and the existence of any electric pulse in engine and relevant engine management system.

Fig. 4 shows the applying examples of portable diagnostic equipment simply, and this figure can demonstrate: when engine under situation about moving under the driven condition, the user also can detect fault when in its vehicle, driving.

Fig. 5 shows another preferred embodiment of the present invention; Wherein be provided with other circuit, will make portable diagnostic equipment also can and join other preferred feature on the top portable diagnostic equipment of describing in detail thus as continuity and voltage probe.

Fig. 6 schematically shows the circuit in main casing in a preferred implementation.

Embodiment

To specify these accompanying drawings now; Wherein with reference to Fig. 1 and Fig. 3; Provide substantially by the portable diagnostic equipment shown in 10; It comprises main casing case 12, and this main casing case comprises the electronic circuit that positive probe 16 is connected with LED (light emitting diode) 22 and is used for engaging the negative clamp 20 that comes the negative terminal 43 of the clearest vehicle battery that demonstrates 45 among comfortable Fig. 3.

The negative probe 14 that is electrically connected with emitting led 24 also is provided, and this LED24 is electrically connected with positive clamp 18, and this positive clamp 18 is used for being electrically connected with plus end 47 at the vehicle battery shown in Fig. 3 45.

When in analysis, using this portable diagnostic equipment, positive clamp 20 is connected with negative terminal 43 with the corresponding plus end 47 of vehicle battery 45 with negative clamp 18.

Though in these views, do not demonstrate, can find out that the rubber sleeve at the thrower connector back side of engine will expose two wiring at 44 places substantially, can corresponding

probe

14 and 16 be inserted into wherein easily as shown in fig. 3 then.

The test environment of the circuit in main casing 10 is like this; When thereby an indication LED 24 is glimmered off and on therein; The situation that promptly negative probe 14 is connected with one of them wiring that exposes from the thrower connector; This will represent to exist negative pulse, the continuous luminous continuous positive voltage of then representing on LED22.

Except main casing 38 being divided into two independent boxes 23 and 25, the embodiment shown in Fig. 2 will according to carry out in the identical mode of the embodiment shown in Fig. 1.

But; Use with test and keep identical; Wherein box 25 will have circuit, and this circuit will be connected with negative probe 30 positive clamp 34 with LED26, thereby when this probe 30 is connected with the exposure wiring that is positioned at place, the thrower connector back side; If there is negative pulse, then on LED26, will carry out luminous off and on.

Also identical in the situation of box 23, wherein circuit will be born clamp 36 and LED28 and be connected with positive probe 32, thereby engage with the exposure wiring of thrower connector and engine when moving when probe 32, and there is positive voltage in continuous luminous will the reflecting of LED28.

Fig. 4 demonstrates simply; This portable diagnostic equipment can not interrupt the ruuning situation of engine; And in fact through 48 power supplies of 12 volts battery cigar lighters, thus when engine 51 operations the user can adopt this equipment 10 on engine simultaneously to the existence of definite various generating positive and negative voltages and electric pulse or do not exist and carry out diagnostic test.

Fig. 5 demonstrates another preferred embodiment of the present invention simply; Wherein connect to the corresponding positive and negative clamp of

power supply

52 and 54 and the connector, the positive and

negative probe

58 and 60 that connect to the cigarette light adapter 56 of power supply or 12 volts and can in a single adapter 62, link together, this adapter 62 can be received in the associated socket 64 of main casing unit 50 then.

In the embodiment shown in Fig. 5, housing unit 50 also comprises himself independent power-supply battery 66, this means generating positive and negative voltage and/or electric pulse that LED68 and 70 can analyze simultaneously in engine and engine management system.

The reference that can use additional LEDs 72 to detect as individual voltage.Also include the continuity detector of hummer (not shown) as engine and vehicle self.

Fig. 6 schematically demonstrate in main casing 90 substantially by 80 circuit that demonstrate.Positive probe (not shown) can be connected on the LED86 that is connected with resistor 87 at 82 places, can connect diode 92 at 96 places then, can be connected with the negative clamp (not shown) that leads to power supply above that.

84 places are connected with LED88 negative probe (not shown) in the position, and LED88 is connected with diode 94 by resistor 89.Diode 94 is connected with the positive clamp (not shown) of the power supply that can be connected 98 places.

Claims

1. diagnostic device is used to indicate generating positive and negative voltage and electric pulse to exist when it is connected to the wiring of thrower connector or does not exist, and said diagnostic device comprises:

A main casing case comprises the electronic circuit that is connected with the visual LED of first and second users;

Said electronic circuit comprises the positron input point that can be connected to positive probe; Said positron input point is connected to the anode tap of a LED; The cathode terminal of a said LED is electrically connected to the anode tap of first diode through a resistor, and the negative clamp of the cathode terminal of said first diode and power supply electrically contacts;

Said electronic circuit also comprises the negatron input point that can be connected to negative probe; Said negatron input point is connected to the cathode terminal of the 2nd LED; The anode tap of said the 2nd LED is electrically connected to the cathode terminal of second diode through a resistor, and the positive clamp of the anode tap of said second diode and power supply electrically contacts;

Thereby when engine start, said positive probe is arranged in one of them exposure wiring of thrower connector, lights a LED thus;

And negative probe is arranged on another at the place, the back side of thrower connector and exposes in the wiring, lights the 2nd LED thus,

In case positive probe and negative probe have been arranged on each of corresponding exposure wiring of thrower connector, then the circuit of this unit so is provided with, and promptly a LED is luminous continuously, and the 2nd LED is intermittently luminous.

2. diagnostic device as claimed in claim 1, wherein continuous luminous the providing of a LED demonstrates the analysis that has positive voltage.

3. diagnostic device as claimed in claim 2, wherein a LED glows continuously.

4. diagnostic device as claimed in claim 1, the wherein intermittently existence of luminous expression negative of the 2nd LED.

5. like each described diagnostic device of claim 1-4, the power supply that is used for both positive and negative polarity is provided by 12 volts vehicle battery.

6. diagnostic device as claimed in claim 5, wherein said power supply are accumulator.

7. like each described diagnostic device in claim 1-4 and 6, in fact the positive and negative lead-in wire that wherein leads to power supply is attached in 12 volts the housing of cigarette light adapter, and it can use in the vehicle in analysis subsequently.