CN106526386A - Automobile fuel injection test system - Google Patents
Automobile fuel injection test system Download PDFInfo
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- CN106526386A CN106526386A CN201611107865.3A CN201611107865A CN106526386A CN 106526386 A CN106526386 A CN 106526386A CN 201611107865 A CN201611107865 A CN 201611107865A CN 106526386 A CN106526386 A CN 106526386A
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- solid
- intervalometer
- state relay
- source
- test system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Engines (AREA)
Abstract
The invention provides an automobile fuel injection test system, which comprises a variable resistor, a DC power supply, a fuel pump, fuel injection nozzles, timers with the same number as the fuel injection nozzles, solid-state relays and normally-open switches, wherein the positive electrode of the DC power supply is connected with the fixed end of the variable resistor; the variable end of the variable resistor is connected with the fuel pump; the fuel pump is also connected with the negative electrode of the DC power supply; the positive electrode and the negative electrode of the DC power supply are respectively connected with the input end of each timer; the output end of each timer is connected with the input end of one solid-state relay; one output end of each solid-state relay is connected with one end of one normally-open switch; the other output end of each solid-state relay is connected with the positive electrode of the DC power supply; the other end of each normally-open switch is connected with the positive electrode of a coil of one fuel injection nozzle; and the negative electrode of the coil of one fuel injection nozzle is connected with the negative electrode of the DC power supply. Thus, rely on an ECU by the test system can be removed, unnecessary wiring harnesses are saved, and the occupied space is small.
Description
Technical field
The present invention relates to auto electric electronic control technology field, more specifically, is related to a kind of automobile oil spout test system.
Background technology
At present, the electronic control unit (Electronic Control Unit, referred to as ECU) of automobile engine is directed to
Though the control logic of injection system has nuance, overall plan is similar, control logic such as Fig. 1 institutes of the ECU to injection system
Show, specific workflow is as follows：
Step 1：When key pushes " ON " shelves, ECU control main relay adhesives, the coil electrode of 1-4 cylinder atomizers are equal
Electric 12V+ is obtained, while 86 foot of FP Fuel Pump Relay obtains electric 12V+；
Step 2：When key pushes " ST " shelves, the output of 06 foot is controlled after ECU detects CRANK SENSOR
Low level, then the coil of FP Fuel Pump Relay obtain electric 12V adhesives, because 87 feet of FP Fuel Pump Relay often connect accumulator 12V+, oil pump
The normal earth lead in one end, oil pump obtain electric 12V and start working and set up oil pressure to atomizer conveying fuel oil；
Step 3：After the 06 foot output low level of ECU, ECU controls atomizer coil pin 01-04 exports gap respectively
Property low level, realizes the logic control of 1-4 cylinder oil injection times, injection duration, not injection duration.
The producer of the test system of domestic existing automobile injection system has a lot, and product type is not quite similar, but in fact
Existing scheme has obvious common feature, i.e., with the ECU of the automobile engine shown in Fig. 1 to the control principle of injection system be still
Major scheme, test system using the Engine ECU consistent with real vehicle, igniting with Injection Control logic, injection system parts,
Uniquely difference is to cancel engine assembly with real vehicle, by adopt simulation CRANK SENSOR (signal is adjustable, you can
Simulated engine rotating speed speed) the way of output substitute true crankshaft position sensor.
Therefore, it can draw the ECU that the test system of existing automobile injection system is necessarily dependent upon automobile engine, it is no
Test function cannot then be realized.
The content of the invention
In view of the above problems, it is an object of the invention to provide a kind of automobile oil spout test system, to solve existing automobile
The test system of injection system has to rely on the problem tested by ECU.
The automobile oil spout test system that the present invention is provided, it is adaptable to electromotors more than two cylinders, specifically includes：One straight
Stream power supply, oil pump, at least two atomizers and an oil spout unrounded number identical intervalometer and oil spout unrounded number identical are solid
State relay and oil spout unrounded number identical normal open switch and rheostat；Wherein,
The positive pole of DC source is connected with the fixing end of rheostat, and the convertible tip of rheostat is connected with oil pump,
Oil pump is also connected with the negative pole of DC source；And,
The positive pole of DC source is also connected with the input of each intervalometer respectively with negative pole, the outfan of each intervalometer
It is connected with the input of a solid-state relay, an outfan of each solid-state relay with a normal open switch
End connection, another outfan of each solid-state relay is connected with the positive pole of DC source, each normal open switch it is another
End is connected with the coil electrode of an atomizer, and the coil negative pole of each atomizer is connected with the negative pole of DC source.
In addition, some preferred schemes are, automobile oil spout test system also includes and oil spout unrounded number identical enumerator,
Each enumerator is connected with the outfan of an intervalometer, and each enumerator positive pole also respectively with DC source, negative pole connect
Connect.
The automobile oil spout test system that the present invention is provided need not consider that speed probe is believed compared with existing test system
Number simulation input ECU, without needing to consider Ignition Logic, need not consider real vehicle other electrical parts relevant with ECU, therefore, it can
Dependence of the test system to ECU is broken away from, unnecessary wire harness is saved, is taken up room little.
Description of the drawings
By reference to the explanation below in conjunction with accompanying drawing, and with being more fully understood to the present invention, the present invention other
Purpose and result will be more apparent and should be readily appreciated that.In the accompanying drawings：
Fig. 1 is the electric control theory figure of automobile injection system of the prior art；
Fig. 2 is the circuit logic structure chart of the automobile oil spout test system according to the embodiment of the present invention；
Fig. 3 is the control principle drawing of the oil spout link of the first cylinder according to the embodiment of the present invention；
Output signal characteristics figures of the Fig. 4 for intervalometer.
Reference therein is：DC source DC, enumerator C1-C4, intervalometer TM1-TM4, solid-state relay KM1-
KM4, normal open switch S1-S4, atomizer 1-4, oil pump 5, rheostat R.
Specific embodiment
The specific embodiment of the present invention is described in detail below with reference to accompanying drawing.
The present invention provides a kind of automobile oil spout test system, it is adaptable to electromotors more than two cylinders, and the present invention is with four cylinders
The structure and principle of automobile oil spout test system are illustrated as a example by electromotor, the electromotor of other cylinder numbers is suitable in the same manner.
Fig. 2 shows the circuit logic structure of automobile oil spout test system according to embodiments of the present invention.
As shown in Fig. 2 automobile oil spout test system, including：DC source DC, enumerator C1-C4, intervalometer TM1-TM4,
Solid-state relay KM1-KM4, normal open switch S1-S4, atomizer 1-4, rheostat R and oil pump 5；Wherein, DC source DC
Positive pole be connected with the fixing end of rheostat R, the convertible tip of rheostat R is connected with oil pump 5, and oil pump 5 is also and direct current
The negative pole connection of power supply DC, constitutes a series circuit equivalent to DC source DC, rheostat R and oil pump 5, by adjusting
The resistance of rheostat R realizing the change of 5 supply voltage of oil pump, so as to realize the change of 5 outlet oil pressure of oil pump.
The respective input of intervalometer TM1-TM4 is connected with the positive pole of DC source DC respectively, intervalometer TM1-TM4
Respective another input is connected with the negative pole of DC source DC respectively, two outfans of intervalometer TM1 respectively with solid-state
Two input connections of relay KM1, two outfans of intervalometer TM2 are input into two of solid-state relay KM2 respectively
End connection, two outfans of intervalometer TM3 are connected with two inputs of solid-state relay KM3 respectively, and the two of intervalometer TM4
Individual outfan is connected with two inputs of solid-state relay KM4 respectively.
One outfan of solid-state relay KM1 is connected with one end of normal open switch S1, and of solid-state relay KM2 is defeated
Go out end to be connected with one end of normal open switch S2, an outfan of solid-state relay KM3 is connected with one end of normal open switch S3, Gu
One outfan of state relay KM4 is connected with one end of normal open switch S4；Solid-state relay KM1-KM4 is respective, and another is defeated
Go out end to be connected with the positive pole of DC source DC respectively.
The other end of normal open switch S1 is connected with the coil electrode of atomizer 1, the other end and the atomizer 2 of normal open switch S2
Coil electrode connection, the other end of normal open switch S3 is connected with the coil electrode of atomizer 3, the other end of normal open switch S4 and
The coil electrode connection of atomizer 4；The respective coil negative poles of atomizer 1-4 are connected with the negative pole of DC source DC respectively.
From the above, it is seen that intervalometer TM1, solid-state relay KM1, normal open switch S1 and atomizer 1 form the
The oil spout link of one cylinder, intervalometer TM1, solid-state relay KM1, normal open switch S1 and atomizer 1 form the spray of the first cylinder
Oily link, intervalometer TM2, solid-state relay KM2, normal open switch S2 and atomizer 2 form the oil spout link of the second cylinder, timing
Device TM3, solid-state relay KM3, normal open switch S3 and atomizer 3 form the oil spout link of the 3rd cylinder, intervalometer TM4, solid-state
Relay KM4, normal open switch S4 and atomizer 4 form the oil spout link of the 4th cylinder.
Therefore, the present invention provide automobile oil spout test system, be controlled by four intervalometers respectively it is each self-corresponding
Solid-state relay is opened or closed, so as to controlling the persistent period and oil spout off time of four atomizer oil spouts.
The above is described in detail the logical structure of automobile oil spout test system, below according to automobile oil spout test system
Logical structure the control principle of automobile oil spout test system is made an explanation, said by taking the oil spout link of the first cylinder as an example
Bright, the oil spout link capacity of other cylinders understands.
Fig. 3 shows the control principle of the oil spout link of the first cylinder according to embodiments of the present invention.
As shown in figure 3, first, the normal open switch S1 being connected with atomizer 1 is closed, when automobile oil spout test system is powered
Afterwards, the input of intervalometer TM1 obtains 12V voltages, and the 12V voltages that intervalometer TM1 can be obtained are by internal energization, power-off
Time set-up function is converted into the rising edge t1 and trailing edge t2 (as shown in Figure 4) of 12V square-wave signals and is exported, and controls solid-state
Relay KM1's is opened or closed, so as to realize injection duration, any setting of off time of atomizer 1.
As intervalometer TM1 is output as 12V square-wave signals, it is impossible to band dynamic load, therefore, triggered using intervalometer TM1
Solid-state relay KM1 actions, when the 12V square-wave signals of intervalometer TM1 outputs are in trailing edge t2, the 2 of solid-state relay KM1
Pin and 5 pins are connected without 12V voltages, 1 pin and 4 pins, and 1 pin is closed without output, atomizer 1；When intervalometer TM1 is exported
12V square-wave signals when being in rising edge t1,2 pins of solid-state relay KM1 and 5 pins obtain 12V voltages, and 1 pin and 3 draws
Foot is connected, and after being powered because of automobile oil spout test system, 3 pins of solid-state relay KM1 obtain 12V voltages, and atomizer 1 often connects low
Level, then open after the acquisition of atomizer 1 12V voltages.Thus by the signal output of intervalometer TM1 realize atomizer 1 open or
Close, that is, when realizing without Engine ECU, still can be by electrical arrangement precise control atomizer according to any oil spout operation.Together
Reason, the atomizer of the second cylinder to the 4th cylinder also can arbitrarily set energization, the power-off time of intervalometer, and four gas as needed
The test of cylinder is independently mutually incoherent, is also capable of achieving the different test analysis of the oil spout state of difference cylinder.
In a preferred embodiment of the present invention, automobile oil spout test system includes four enumerators, with reference to Fig. 1,
Four enumerators are respectively C1-C4, and enumerator C1 is connected with the outfan of intervalometer TM1, and enumerator C2 is defeated with intervalometer TM2's
Go out end connection, enumerator C3 is connected with the outfan of intervalometer TM3, and enumerator C4 is connected with the outfan of intervalometer TM4, is counted
Device C1-C4 positive poles also respectively with DC source DC, negative pole are connected.Once oily enumerator remembers a number for atomizer spray, in oil spout
During mouth oil spout, what intervalometer was necessarily exported is rising edge signal, therefore, enumerator is connected with intervalometer, by counting timing
The number of times of the rising edge of device output can just know the number of times of atomizer oil spout.
When electromotor is two cylinder, with two atomizers, two intervalometers, two enumerators, two it is normally opened
Switch, two solid-state relays, that is to say, that the quantity of atomizer, intervalometer, enumerator, normal open switch and solid-state relay
It is identical with the number of cylinders of electromotor.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (2)
1. a kind of automobile oil spout test system, it is adaptable to electromotors more than two cylinders, specifically includes：One DC source, one
Individual oil pump, at least two atomizers, it is characterised in that also include and the oil spout unrounded number identical intervalometer and the spray
Oil nozzle quantity identical solid-state relay and the oil spout unrounded number identical normal open switch and rheostat；Wherein,
The positive pole of the DC source is connected with the fixing end of the rheostat, the convertible tip of the rheostat and institute
Oil pump connection is stated, the oil pump is also connected with the negative pole of the DC source；And,
The positive pole of the DC source is also connected with the input of each intervalometer respectively with negative pole, the outfan of each intervalometer
It is connected with the input of a solid-state relay, an outfan of each solid-state relay with a normal open switch
End connection, another outfan of each solid-state relay are connected with the positive pole of the DC source, each normal open switch
The other end is connected with the coil electrode of an atomizer, the negative pole of the coil negative pole of each atomizer with the DC source
Connection.
2. automobile oil spout test system as claimed in claim 1, it is characterised in that also include identical with the oil spout unrounded number
Enumerator, each enumerator is connected with the outfan of an intervalometer, each enumerator also respectively with the DC source
Positive pole, negative pole connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611107865.3A CN106526386A (en) | 2016-12-06 | 2016-12-06 | Automobile fuel injection test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611107865.3A CN106526386A (en) | 2016-12-06 | 2016-12-06 | Automobile fuel injection test system |
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| Publication Number | Publication Date |
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| CN106526386A true CN106526386A (en) | 2017-03-22 |
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ID=58341486
Family Applications (1)
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| CN201611107865.3A Pending CN106526386A (en) | 2016-12-06 | 2016-12-06 | Automobile fuel injection test system |
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|---|---|---|---|---|
| CA1277745C (en) * | 1988-06-20 | 1990-12-11 | Adel F.T. Dimitri | Vehicle engine remote start/stop control and protective system |
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| US20160146876A1 (en) * | 2014-11-26 | 2016-05-26 | Hyundai Motor Company | System and method for diagnosing insulation-breakdown of vehicle component |
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Patent Citations (13)
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|---|---|---|---|---|
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| CN101042097A (en) * | 2007-04-13 | 2007-09-26 | 徐焕恩 | Electric control multi-point sequent injection system for gasoline and gas used in electrometallizing vehicle |
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| US20090241884A1 (en) * | 2008-04-01 | 2009-10-01 | Denso Corporation | Diagnosis device for vehicle |
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| CN102916685A (en) * | 2011-08-05 | 2013-02-06 | 李刚 | Energy saving apparatus capable of automatically powering off |
| CN203858003U (en) * | 2014-05-09 | 2014-10-01 | 奇瑞汽车股份有限公司 | Sampling circuit of vehicular fuel gauge |
| US20160146876A1 (en) * | 2014-11-26 | 2016-05-26 | Hyundai Motor Company | System and method for diagnosing insulation-breakdown of vehicle component |
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| CN106150795A (en) * | 2015-04-03 | 2016-11-23 | 上汽通用五菱汽车股份有限公司 | A kind of pressure regulator and vehicle fuel feed system |
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