CN104992607A - Experimental device used for electronic control gasoline engine fuel system - Google Patents
Experimental device used for electronic control gasoline engine fuel system Download PDFInfo
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- CN104992607A CN104992607A CN201510426501.0A CN201510426501A CN104992607A CN 104992607 A CN104992607 A CN 104992607A CN 201510426501 A CN201510426501 A CN 201510426501A CN 104992607 A CN104992607 A CN 104992607A
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Abstract
The invention discloses an experimental device used for an electronic control gasoline engine fuel system. The experimental device comprises an executing part and a control part. The executing part comprises a fuel tank and a fuel pump arranged in the fuel tank. The output end of the fuel pump is connected with a fuel filter, the output end of the fuel filter is connected with the input end of a fuel rail through a fuel outlet pipe, and the output end of the fuel rail is connected with a fuel pressure adjuster. The upper input end of the fuel pressure adjuster is connected with a vacuum pump through a vacuum pipe, and the lower output end of the fuel pressure adjuster is connected with the fuel tank through a fuel returning pipe. A fuel sprayer set is connected to the lower end of the fuel rail. A fuel-outlet manual control valve is arranged on the fuel outlet pipe, a fuel-returning manual control valve is arranged on the fuel returning pipe, and a Shrader valve used for adjusting the vacuum degree is further arranged on the vacuum pipe. The experimental device is simple in structure, convenient to operate, vivid in working process and suitable for theory and practice integrated teaching of courses, and the teaching effect can be remarkably improved.
Description
Technical field
The present invention relates to a kind of experimental provision for electric-controlled petrol engine fuel system.
Background technology
At present, electric-controlled petrol engine fuel system is made up of fuel tank, oil pump, fuel filter, oil pressure regulator, fuel injector, control unit of engine etc.; Oil pump provides system pressure, by fuel oil sucking-off from fuel tank, after fuel filter impurity screening, is pumped into oily rail and fuel injector; Control unit of engine determines best distributive value according to the signal of each sensor, and accurately controls the distributive value of fuel injector by the ON time controlling triode, and the fuel oil and the air that spray into inlet manifold are mixed to form combustion mixture, the work done of air feed in-cylinder combustion; Oil pressure regulator regulating system oil pressure, makes the difference of system oil pressure and air-distributor pressure keep constant, to make control unit of engine accurately can control distributive value, and sends excess fuel back to fuel tank through scavenge pipe.And the laboratory of current many schools, all neither one is convenient to the electric-controlled petrol engine fuel system of experiment, is all in most cases to adopt traditional instruction or type teaching, has lacked the meaning of practice.
Summary of the invention
The defect that the present invention seeks to exist for prior art provides a kind of experimental provision for electric-controlled petrol engine fuel system.
The present invention for achieving the above object, adopts following technical scheme: a kind of experimental provision for electric-controlled petrol engine fuel system, comprises and performs part and control section; Described enforcement division subpackage oil scraper case, is arranged on the oil pump in fuel tank; Described oily delivery side of pump is connected with fuel filter, and the output terminal of described fuel filter is connected by the input end of flowline with oily rail, and the output terminal of described oily rail is connected with oil pressure regulator; The upper input of described oil pressure regulator is connected with vacuum pump by vacuum tube, and its underpart output terminal is connected with described fuel tank by scavenge pipe; The lower end of described oily rail is connected with fuel injector group; Wherein, described flowline being provided with fuel-displaced manually operated control valve, described scavenge pipe being provided with oil return manually operated control valve, described vacuum tube being also provided with the Shi Laer valve for regulating vacuum tightness;
Described control section comprises accumulator, its first output terminal is connected with control unit of engine by ignition switch, its second output terminal is connected with the contact of often starting of main relay, and the stationary contact of often opening of described main relay is connected with the energization input of fuel injector group and oil pump respectively; The control input end of described control unit of engine is connected with adjustable signal generator; First output terminal of described control unit of engine is connected with coil one end of described main relay, and its second output terminal is connected with the control input end of described fuel injector group.
Further, the lower end correspondence of described fuel injector group is provided with oil sump; The bottom of described oil sump is connected in described fuel tank by pipeline.
Further, described fuel injector group comprises the first cylinder injector, the second cylinder injector, the 3rd cylinder injector and the 4th cylinder injector.
Beneficial effect of the present invention: this experimental provision structure is simple, easy to operate, volume is little, cost is low, the course of work is vivid, direct, can show tensimeter under normal condition and abnomal condition and the numerical value of vacuum meter and the duty of fuel injector; And this device is due to not fuel consumption with produce waste gas, therefore, safety, environmental protection, economy during use.Be applicable to the theory and practice one teaching of course, can teaching efficiency be significantly improved, in same device, there is advance.
Accompanying drawing explanation
Fig. 1 is enforcement division separation structure schematic diagram of the present invention.
Fig. 2 is control section structural representation of the present invention.
Embodiment
Shown in Fig. 1, Fig. 2, be a kind of experimental provision for electric-controlled petrol engine fuel system of the present invention, comprise and perform part and control section; Described enforcement division subpackage oil scraper case 2, is arranged on the oil pump 1 in fuel tank 2; The output terminal of described oil pump 1 is connected with fuel filter 3, and the output terminal of described fuel filter 3 is connected with the input end of oily rail 6 by flowline 4, and the output terminal of described oily rail 6 is connected with oil pressure regulator 12; The upper input of described oil pressure regulator 12 is connected with vacuum pump 8 by vacuum tube 11, and its underpart output terminal is connected with described fuel tank 2 by scavenge pipe 14; The lower end of described oily rail 6 is connected with fuel injector group (i.e. the first cylinder injector 15, second cylinder injector 16, the 3rd cylinder injector 17 and the 4th cylinder injector 18) in turn; Wherein, described flowline 4 is provided with fuel-displaced manually operated control valve 5, described vacuum tube 11 is provided with Shi Laer valve 10, described scavenge pipe 14 is provided with oil return manually operated control valve 13.In addition, oil pressure gauge 7 can be set in described oily rail 6 Shanghai, described vacuum tube 11 can also arrange vacuum meter 9.
Described control section comprises accumulator 21, its first output terminal is connected with control unit of engine 24 by ignition switch 22, its second output terminal is connected with the contact of often starting of main relay 23, and the stationary contact of often opening of described main relay 23 is connected with the energization input of fuel injector group and oil pump 1 respectively; The control input end of described control unit of engine 24 is connected with adjustable signal generator 25; First output terminal of described control unit of engine 25 is connected with coil one end of described main relay 23, and its second output terminal is connected with the control input end of described fuel injector group.
Wherein, the lower end correspondence of described fuel injector group is provided with oil sump 19; The bottom of described oil sump 19 is connected in described fuel tank 2 by pipeline.
As shown in Figure 1, when mounted, oily rail, fuel injector group, oil pressure regulator, fuel filter, oil pump and each pipeline be former car own; And oily rail, fuel injector group, oil pressure regulator are all installed together by former car state; Flowline to scavenge pipe is provided with corresponding manually operated control valve, during normal work, each manually operated control valve is opening, closes the plugging fault that manually operated control valve can simulate each pipeline; Fuel injector group arranged beneath has transparent oil sump, is convenient to the oil spout state of observing fuel injector, communicates, be convenient to fuel oil and flow back to fuel tank below oil sump with scavenge pipe; The vacuum of oil pressure regulator is provided by vacuum pump, and the vacuum meter on vacuum tube can show vacuum values; Shi Laer valve on vacuum tube is similar to valve core structure, above has ejector pin, and pressing ejector pin can make extraneous air communicate with vacuum, in order to regulate vacuum tightness; Oil pressure gauge display system oil pressure.
As shown in Figure 2, adjustable signal generator exports rectangular pulse signal, can the tach signal of simulated engine, and signal frequency can adjust; Control unit of engine is the single-chip microcomputer of oneself programming development.Closed in ignition switch, when opening adjustable signal generator, control unit of engine enters duty, main relay adhesive, and accumulator powers to respectively four fuel injectors and oil pump, after operation of oil pump, provides system oil pressure to experimental provision.Meanwhile, control unit of engine with 10% the oil spout of Duty ratio control 4 fuel injectors interval, its oil spout frequency synchronously increases or reduce with engine speed, numerical value is the half of engine speed.
Table 1 is use when this device is tested and fault verification method.
Table 1
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. for an experimental provision for electric-controlled petrol engine fuel system, it is characterized in that, comprise and perform part and control section; Described enforcement division subpackage oil scraper case, is arranged on the oil pump in fuel tank; Described oily delivery side of pump is connected with fuel filter, and the output terminal of described fuel filter is connected by the input end of flowline with oily rail, and the output terminal of described oily rail is connected with oil pressure regulator; The upper input of described oil pressure regulator is connected with vacuum pump by vacuum tube, and its underpart output terminal is connected with described fuel tank by scavenge pipe; The lower end of described oily rail is connected with fuel injector group; Wherein, described flowline being provided with fuel-displaced manually operated control valve, described scavenge pipe being provided with oil return manually operated control valve, described vacuum tube being also provided with the Shi Laer valve for regulating vacuum tightness;
Described control section comprises accumulator, its first output terminal is connected with control unit of engine by ignition switch, its second output terminal is connected with the contact of often starting of main relay, and the stationary contact of often opening of described main relay is connected with the energization input of fuel injector group and oil pump respectively; The control input end of described control unit of engine is connected with adjustable signal generator; First output terminal of described control unit of engine is connected with coil one end of described main relay, and its second output terminal is connected with the control input end of described fuel injector group.
2. a kind of experimental provision for electric-controlled petrol engine fuel system as claimed in claim 1, it is characterized in that, the lower end correspondence of described fuel injector group is provided with oil sump; The bottom of described oil sump is connected in described fuel tank by pipeline.
3. a kind of experimental provision for electric-controlled petrol engine fuel system as claimed in claim 2, it is characterized in that, described fuel injector group comprises the first cylinder injector, the second cylinder injector, the 3rd cylinder injector and the 4th cylinder injector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510426501.0A CN104992607A (en) | 2015-07-15 | 2015-07-15 | Experimental device used for electronic control gasoline engine fuel system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510426501.0A CN104992607A (en) | 2015-07-15 | 2015-07-15 | Experimental device used for electronic control gasoline engine fuel system |
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| CN104992607A true CN104992607A (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510426501.0A Pending CN104992607A (en) | 2015-07-15 | 2015-07-15 | Experimental device used for electronic control gasoline engine fuel system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107038942A (en) * | 2017-06-26 | 2017-08-11 | 山东派蒙机电技术有限公司 | Multi-purpose vehicle(MPV) ignition system is developed and training set |
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| CN2879325Y (en) * | 2005-04-25 | 2007-03-14 | 广州万得福汽车电子数码检测设备有限公司 | Technology real-training teaching system for vehicle motor |
| CN201531318U (en) * | 2009-10-29 | 2010-07-21 | 朱辉 | Electronic injection engine managing system |
| CN202258099U (en) * | 2011-10-24 | 2012-05-30 | 龚文资 | Analog circuit of vehicle electronic control engine |
| CN203146188U (en) * | 2013-03-20 | 2013-08-21 | 上海理工大学 | Electronic fuel injector flow performance batch detecting system |
| CN204808741U (en) * | 2015-07-15 | 2015-11-25 | 无锡商业职业技术学院 | Experimental device for be used for automatically controlled petrol engine fuel oil system |
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2015
- 2015-07-15 CN CN201510426501.0A patent/CN104992607A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2502347Y (en) * | 2001-09-20 | 2002-07-24 | 管文礼 | Electric jetting motor system demonstration teaching board |
| CN2879325Y (en) * | 2005-04-25 | 2007-03-14 | 广州万得福汽车电子数码检测设备有限公司 | Technology real-training teaching system for vehicle motor |
| CN201531318U (en) * | 2009-10-29 | 2010-07-21 | 朱辉 | Electronic injection engine managing system |
| CN202258099U (en) * | 2011-10-24 | 2012-05-30 | 龚文资 | Analog circuit of vehicle electronic control engine |
| CN203146188U (en) * | 2013-03-20 | 2013-08-21 | 上海理工大学 | Electronic fuel injector flow performance batch detecting system |
| CN204808741U (en) * | 2015-07-15 | 2015-11-25 | 无锡商业职业技术学院 | Experimental device for be used for automatically controlled petrol engine fuel oil system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107038942A (en) * | 2017-06-26 | 2017-08-11 | 山东派蒙机电技术有限公司 | Multi-purpose vehicle(MPV) ignition system is developed and training set |
| CN107038942B (en) * | 2017-06-26 | 2019-04-02 | 山东派蒙机电技术有限公司 | The exploitation of multi-purpose vehicle(MPV) ignition system and training device |
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Application publication date: 20151021 |