CN205172792U - Safety arrangement of internal -combustion engine - Google Patents
Safety arrangement of internal -combustion engine Download PDFInfo
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- CN205172792U CN205172792U CN201520973467.4U CN201520973467U CN205172792U CN 205172792 U CN205172792 U CN 205172792U CN 201520973467 U CN201520973467 U CN 201520973467U CN 205172792 U CN205172792 U CN 205172792U
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- combustion engine
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 55
- 230000004044 response Effects 0.000 claims abstract description 7
- 230000002159 abnormal effect Effects 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 230000002459 sustained effect Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The utility model discloses a safety arrangement of internal -combustion engine has solved the internal -combustion engine and to need when unusual to have appeared artificial nurse in order stopping working to the internal -combustion engine, and its technical scheme main points detect the speed abnormal state of internal -combustion engine and export control signal the control unit including being used for, and the control unit is coupled the automatically controlled execution unit who is used for controlling combustion engine automatic flameout, and automatically controlled execution unit includes drive division and execution portion, the drive division is coupled in the control unit in order to receive control signal to outlet driving signal, execution portion is coupled in the drive division with receipt drive signal and in response to drive signal to to internal -combustion engine automatic flameout, the utility model discloses a safety arrangement of internal -combustion engine realizes internal -combustion engine automatic flameout function through automatically controlled execution unit, and it provides probably with the intellectuality to have improved the operational reliability that adopts the internal -combustion engine product and derived automatically controlledization of equipment for the internal -combustion engine.
Description
Technical field
The utility model relates to internal-combustion engine control field, and more particularly, it relates to a kind of safety protection device of internal-combustion engine.
Background technique
The function of the electronic speed regulator of internal-combustion engine makes internal-combustion engine automatically regulate fuel delivery with the change of load, steady running in the speed range remaining on regulation, and prevent hypervelocity or idling flameout phenomenon, general-purpose engine electronic speed regulator adjusts by electric actuator (as decelerating step motor) adjustment that the large I of throttle opening realizes combustion motor rotating speed and output power, electronic speed regulator comprises control unit, engine temperature detection unit, engine output shaft motion detection unit, chock plate aperture regulon, throttle opening regulon, by engine temperature detection unit, engine output shaft motion detection unit, chock plate aperture regulon, throttle opening regulon detects with combustion motor state, if go wrong, then feed back to control unit, and shown by display screen or report to the police, as controller lost efficacy, (controller tested the speed inefficacy, throttle control motor failure, the uncontrollable throttle motor of controller abnormal electrical power supply), cannot continue to adjust throttle opening, closure otherwise keep aperture constant, internal-combustion engine enters runaway condition.
In order to solve the problem, at electronic throttle, place increases back the return mechanical structures such as spring, motor is allowed to enter idling or closed condition by the effect of return structure, but the method increasing return knot position bullet structure can increase the power consumption of electronic throttle controller (when electronic throttle normally works, stepper motor will overcome the reaction force of return spring), not energy-conservation, and also there is gap after chock plate closure complete shut-down, motor enters idling or closed condition, cannot determine; Increase fuel regulator valve, electronic speed regulator abnormal or out of control time, fuel regulator valve fuel cut-off, will increase structural complexity and the cost of system like this.
Although adopt such scheme all can solve the problem that internal-combustion engine can enter runaway condition, the use of combustion motor all needs manual operation, needs manually to nurse, so current used internal-combustion engine has certain room for improvement.
Model utility content
For the deficiency that prior art exists, the purpose of this utility model is the safety protection device providing a kind of internal-combustion engine, realizes auto extinguishing function by the turn-on and turn-off of control point live wire, realizes without the need to artificial nurse.
For achieving the above object, the utility model provides following technological scheme: a kind of safety protection device of internal-combustion engine, comprise the velocity anomaly state for detecting internal-combustion engine and export control signal control unit, described control unit is coupled with the automatically controlled performance element for controlling combustion engine auto extinguishing, and described automatically controlled performance element comprises drive portion and enforcement division;
Described drive portion is coupled to control unit with reception control signal, and output drive signal;
Described enforcement division is coupled to drive portion to receive drive singal and in response to drive singal, with combustion motor auto extinguishing.
Adopt such scheme, combustion motor auto extinguishing function is realized by automatically controlled performance element, improve and adopt the functional reliability of internal-combustion engine product and derive automatically controlledization of equipment for internal-combustion engine and intellectuality provides possibility, integrated circuit structure is simple simultaneously, easy realization, by auto extinguishing to reach energy-conservation effect, cause reduce its working life under the state simultaneously also effectively avoiding internal-combustion engine to be in abnormal work for a long time, situation about even damaging.
As preferably, described drive portion is triode, and described enforcement division is relay;
The base stage of described triode is coupled to control unit, and the coil of described relay is coupled to the collector electrode of triode, the grounded-emitter connection of described triode;
The normally-closed contact of described relay is coupled to ignition wire interface.
Adopt such scheme, with low cost, and circuit layout is simpler, be more prone to realize, by triode base stage reception control signal, and be controlled by control signal, namely when electronic speed regulator normally works, triode ON is to make obtaining of the coil of relay electric, thus the normally opened contact realizing relay closes, normally-closed contact is opened, namely the light a fire two ends of connection jaws are no longer communicated with, then realizing internal-combustion engine can normal ignition, when electronic speed regulator abnormal work, triode not conducting with make the coil of relay must not electricity, thus the normally opened contact realizing relay is opened, normally-closed contact closes, namely the light a fire two ends of connection jaws are interconnected, then internal-combustion engine cannot be lighted a fire, also can realize the function of auto extinguishing simultaneously.
As preferably, described enforcement division is also coupled with the afterflow protection element for the protection of enforcement division.
Adopt such scheme, the coil of relay can be made to disconnect and be that remained electric current is consumed by afterflow protection element, improve the working life of enforcement division.
As preferably, described automatically controlled performance element also comprises and is used to indicate the instruction unit that internal-combustion engine is in flameout state, and described instruction unit is coupled to drive portion to receive drive singal and in response to drive singal.
Adopt such scheme, by the setting of instruction unit, make operator can state more clearly residing for clear and definite internal-combustion engine, whether be in abnormal state, convenient operation personnel carry out safeguarding and keeping in repair.
The utility model is in terms of existing technologies:
1, realize the function that automatic controlling combustion engine is flame-out, improve and adopt the functional reliability of internal-combustion engine product and derive automatically controlledization of equipment for internal-combustion engine and intellectuality provides possibility;
2, circuit structure is simple, with low cost, is convenient to produce.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit theory diagrams of the automatically controlled performance element of the present embodiment;
Fig. 2 is the schematic diagram of the control unit of the present embodiment.
In figure: 1, control unit; 2, automatically controlled performance element; 21, drive portion; 22, enforcement division; 221, afterflow protection element; 23, instruction unit.
Embodiment
Shown in Fig. 2, embodiment is described further.
A kind of safety protection device of internal-combustion engine disclosed in the present embodiment; as shown in Fig. 1 to 2; comprise the velocity anomaly state for detecting internal-combustion engine and export control signal control unit 1; control unit 1 is coupled with the automatically controlled performance element 2 for controlling combustion engine auto extinguishing; automatically controlled performance element 2 comprises drive portion 21 and enforcement division 22; drive portion 21 is coupled to control unit 1 with reception control signal; and output drive signal; enforcement division 22 is coupled to drive portion 21 to receive drive singal and in response to drive singal, with combustion motor auto extinguishing.
Control unit 1 is preferably single-chip microcomputer, as shown in Figure 2, model can be adopted to be the single-chip microcomputer of STM8S103F3P6, also can adopt other single-chip microcomputer.
As shown in Figure 1, drive portion 21 is triode Q3, the model of triode Q3 is preferably NPN type, enforcement division 22 is relay K 1, the base stage of triode Q3 is coupled to control unit 1, and the coil of relay K 1 is coupled to the collector electrode of triode Q3, the grounded-emitter connection of triode Q3, the normally-closed contact of relay K 1 is coupled to ignition wire XHX1 interface, ignition wire XHX1 interface comprises two terminal, terminal are ignition wire XHX1, another terminal are engine housing XHX2, when ignition wire XHX1 is connected with engine housing XHX2, then internal-combustion engine cannot be lighted a fire, when ignition wire XHX1 is connected with engine housing XHX2, then internal-combustion engine cannot be lighted a fire, and above-mentioned two terminal connect respectively with on two of the normally-closed contact of relay K 1 terminals.
As shown in Figure 1; enforcement division 22 is also coupled with the afterflow protection element 221 for the protection of enforcement division 22; afterflow protection element 221 is preferably sustained diode 3; adopt 1N4407 model; the positive pole of sustained diode 3 is connected to power supply, and its negative pole is connected on the collector electrode of triode Q3, and namely sustained diode 3 inverse parallel is on the coil of relay K 1; it is that remained electric current is consumed by sustained diode 3 that the coil of relay K 1 is disconnected, and improves the working life of relay K 1.
As shown in Figure 1; automatically controlled performance element 2 also comprises and is used to indicate the instruction unit 23 that internal-combustion engine is in flameout state; instruction unit 23 is coupled to drive portion 21 to receive drive singal and in response to drive singal; instruction unit 23 comprises tutorial light D4 and protective circuit, is parallel on the coil of relay K 1 after tutorial light D4 connects mutually with protective resistance R46.
When electronic speed regulator normally works, control unit 1 exports the control signal of high level, the control signal of the high level of the base stage reception of triode Q3, make triode Q3 conducting, so the coil of relay K 1 electric, thus realize relay K 1 normally opened contact close, normally-closed contact is opened, namely the light a fire two ends of connection jaws are no longer communicated with, then realizing internal-combustion engine can normal ignition, and tutorial light D4 is also on state and is in normal working to indicate electronic speed regulator simultaneously; When electronic speed regulator abnormal work, the control signal of control unit 1 output low level, the low level control signal of the base stage reception of triode Q3, make triode Q3 no longer conducting, the dead electricity of the coil of relay K 1, thus the normally opened contact realizing relay K 1 is opened, normally-closed contact closes, namely the light a fire two ends of connection jaws are interconnected, then realizing internal-combustion engine can normal ignition, also can realize the function of auto extinguishing, tutorial light D4 is also in off state and is in abnormal operation to indicate electronic speed regulator simultaneously simultaneously.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technological schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. the safety protection device of an internal-combustion engine, comprise the velocity anomaly state for detecting internal-combustion engine and export control signal control unit (1), it is characterized in that: described control unit (1) is coupled with the automatically controlled performance element (2) for controlling combustion engine auto extinguishing, described automatically controlled performance element (2) comprises driving plate (21) and enforcement division (22);
Described driving plate (21) is coupled to control unit (1) with reception control signal, and output drive signal;
Described enforcement division (22) is coupled to driving plate (21) to receive drive singal and in response to drive singal, with combustion motor auto extinguishing.
2. the safety protection device of internal-combustion engine according to claim 1, is characterized in that: described driving plate (21) is triode, and described enforcement division (22) is relay;
The base stage of described triode is coupled to control unit (1), and the coil of described relay is coupled to the collector electrode of triode, the grounded-emitter connection of described triode;
The normally-closed contact of described relay is coupled to ignition wire interface.
3. the safety protection device of internal-combustion engine according to claim 1, is characterized in that: described enforcement division (22) is also coupled with afterflow protection element (221) for the protection of enforcement division (22).
4. the safety protection device of internal-combustion engine according to claim 1; it is characterized in that: described automatically controlled performance element (2) also comprises and is used to indicate the instruction unit (23) that internal-combustion engine is in flameout state, described instruction unit (23) is coupled to driving plate (21) to receive drive singal and in response to drive singal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520973467.4U CN205172792U (en) | 2015-11-28 | 2015-11-28 | Safety arrangement of internal -combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520973467.4U CN205172792U (en) | 2015-11-28 | 2015-11-28 | Safety arrangement of internal -combustion engine |
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| Publication Number | Publication Date |
|---|---|
| CN205172792U true CN205172792U (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520973467.4U Active CN205172792U (en) | 2015-11-28 | 2015-11-28 | Safety arrangement of internal -combustion engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332845A (en) * | 2015-11-28 | 2016-02-17 | 宁波市德霖机械有限公司 | Safety protection device for internal combustion engine |
-
2015
- 2015-11-28 CN CN201520973467.4U patent/CN205172792U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332845A (en) * | 2015-11-28 | 2016-02-17 | 宁波市德霖机械有限公司 | Safety protection device for internal combustion engine |
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| C14 | Grant of patent or utility model | ||
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| CP02 | Change in the address of a patent holder |
Address after: Room 405, 4th Floor, Building 2, No. 168 Zhenlong San Road, Cixi Binhai Economic Development Zone, Ningbo City, Zhejiang Province, 315338 Patentee after: NINGBO NGP INDUSTRY Co.,Ltd. Address before: 315020 No. 88, Lane 666, Jinshan Road, Jiangbei Industrial Park, Ningbo, Zhejiang Patentee before: NINGBO NGP INDUSTRY Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |