CN2240048Y - Overspeed safety electric control device for internal combustion engine - Google Patents
Overspeed safety electric control device for internal combustion engine Download PDFInfo
- Publication number
- CN2240048Y CN2240048Y CN 94221110 CN94221110U CN2240048Y CN 2240048 Y CN2240048 Y CN 2240048Y CN 94221110 CN94221110 CN 94221110 CN 94221110 U CN94221110 U CN 94221110U CN 2240048 Y CN2240048 Y CN 2240048Y
- Authority
- CN
- China
- Prior art keywords
- combustion engine
- internal
- circuit
- control circuit
- electric controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The utility model relates to an electronic control safety insurance device which is used for fast stopping protection when the rotating speed of internal-combustion engines fast increases. The utility model is characterized in that a magnetoelectric sensor installed at the top of a flywheel start gear ring in the internal-combustion engine is used for picking rotating speed signals and is matched with an electron detection control circuit to drive an electromagnetic valve; the electromagnetic valve drives a stopping actuator to realize the oil cut-off and gas cut-off braking control of the internal-combustion engine; thus, when the internal-combustion engine overspeeds, the aims of automatic deceleration and stop and safety protection can be achieved. The utility model adopts an electronic control structure, is safe and reliable and is suitable for speed adjusting control systems of internal-combustion engines, which need safety protection.
Description
The utility model relates to a kind of internal-combustion engine hypervelocity security insurance electric controller, is applicable to that internal-combustion engine needs the speed-adjusting and control system of safety protection, belongs to the control technique field of internal-combustion engine.
The hypervelocity runaway accident of internal-combustion engine, very harmful, cause machine breakdown serious, existing internal-combustion engine hypervelocity safty device, still generally adopt machinery and hydraulic type safty device, forms by being contained in rotating speed on internal combustion (IC) engine camshaft braking conduction mechanism two-part when experiencing mechanical device and hypervelocity, because limit its structure and spatial position, inconvenience is promoted the use of.Chinese patent CN2118163U discloses the anti-overspeed governor switch of a kind of diesel engine of diesel locomotive; it is that the control that utilizes fuel and combustion air to carry prevents the diesel engine of diesel locomotive hypervelocity; also form by die protective gear and control gear of oil-break; solved manually; automatically prevent the driving phenomenon that exceeds the speed limit; it is by control valve; accessory drive; promote the fuel feeding pull bar; constitute the oil cutting-off protection device, the protective gear of dying is by control valve accessory drive, pushing drawing rod; drive small rocker; close choke plate, control the protective gear of dying respectively, compare with the utility model by hand switch and recloser; in installation and use, there is certain shortcoming, particularly automatically controlled aspect.
The purpose of this utility model provides a kind of safety locking motion of being convenient to popularize and promote the internal-combustion engine overspeed protection electronic control braking with quick response of installing and using, overcomes the deficiency of the protective gear of existing machinery.
The purpose of this utility model realizes as follows: be fixedly mounted on internal combustion engine flywheel gear ring napex or be provided with the magnetoelectricity speed probe with gear top that the internal-combustion engine main shaft links, detect tach signal, and convert thereof into the be directly proportional alternation induction electromotive force of frequency of rotating speed, in carrying out circuit, be provided with the electronic detection control circuit, through an electronic detection control wiring, the braking calutron actuator of drive installation on internal-combustion engine subtracts oil or oil-break automatically, dies, realizes that internal-combustion engine slows down or parking brake function when internal-combustion engine exceeds the speed limit.
Magnetoelectricity speed probe (1) is by the screw thread of self, tightening nut (2), through seat level (3) with the flywheel starting gear ring of internal-combustion engine or the gear (5) that links with main shaft, by screw (4) radially vertical fixing be installed on the internal-combustion engine.
Detect control circuit and partly be positioned at special cabinet, be electrically connected with magnetoelectricity speed probe, power supply and solenoid valve by the lead connector assembly, it is by voltage to frequency transmitter-f/v circuit, and rotating speed is provided with circuit, and comparator circuit, phase inverter, power magnification circuit are formed.
Bottom is described further present embodiment in conjunction with the accompanying drawings:
Fig. 1, magnetoelectric transducer scheme of installation of the present utility model.
Fig. 2, schematic block circuit diagram of the present utility model.
Fig. 3, detection control wiring schematic diagram of the present utility model.
Referring to Fig. 1, magnetoelectricity speed probe (1), by the screw thread of self, tightening nut (2) is through seat level (3), with the flywheel starting gear ring of internal-combustion engine or the gear (5) that links with main shaft, by radially vertical being fixedly mounted on the internal-combustion engine of screw (4).
Referring to Fig. 2, Fig. 3, detect control circuit and partly be positioned at special cabinet, by lead, connector assembly and magnetoelectricity speed probe, power supply and solenoid valve are electrically connected, and it is by voltage to frequency transmitter-f/v circuit, and rotating speed is provided with circuit, comparator circuit, phase inverter, power magnification circuit constitutes.
In order to realize such scheme, the f/v circuit comprises by resistance R 1, reference diode V1, and the amplitude limiter loop of composition its objective is when input signal Vi amplitude is too big it is carried out clipping protective transistor V2.
The f/v circuit also comprises by resistance R 2-R5, interchange amplifying return circuit and resistance R 6-R16 that capacitor C 1, C2 transistor V2 form, the emitter-coupled trigger loop that transistor V3, V4 form, between above-mentioned two loops by capacitor C 2 electric coupling, input voltage Vi amplifies through exchanging, after the shaping of emitter-coupled trigger loop, making the output voltage waveforms on the joint (4) of the collector electrode of transistor V4 and resistance R 11 is a square wave.
The f/v circuit also comprises capacitor C 3, diode V5, V6, the differentiator that resistance R 13 connects, it becomes the square-wave voltage on the emitter-coupled trigger output terminal (4) into the positive pulse waveform, capacitor C 3 one terminates on transistor V4 and resistance R 11 joints (4), the other end and diode V5, V6 join, and diode V7 negative pole and resistance R 13 tie points and monostable flipflop loop input end (5) join.
Monostable triggers the loop by transistor V7-V10, diode V11-V14, and resistance R 15-R19, capacitor C 4 is formed.The anodal joint of the emitter-base bandgap grading of resistance R 16 and transistor V9 and diode V13 is monostable flipflop output terminal (6), the effect of monostable trigger loop is the positive pulse trigger voltage signal of accepting to be come by the differential loop on transistor V7 ground level, produce the square wave voltage signal of a constant width and amplitude, transfer to the base stage of transistor V15 from (6) point.
The f/v loop comprises also that by transistor V15 resistance R 20 connects emitter-base bandgap grading with the loop, as impedance conversion and resistance R 21, and the RC wave filter loop that capacitor C 5 is formed.Above-mentioned two loops are with the square-wave voltage on the output terminal (6) in monostable flipflop loop, after following filtering in resistance R 21, on the control point, joint (7) of R21 potentiometer Rp2 and capacitor C 5, the VDC that acquisition is directly proportional with the input voltage frequency reaches the purpose that voltage to frequency is changed.
Two fixed contacts of potentiometer Rp2 are connected across on the control point (7) and between the ground wire, cross-over connection capacitor C 6 and voltmeter P are to show f/v circuit output voltage value between its self-cleaning contact and the ground wire.
Detect control wiring and also comprise a comparator circuit, it has inverting input (8) and in-phase input end (9), and an output terminal (12) comparator N, and this comparator can be the product of integrated voltage comparator or integrated operational amplifier and so on.
Comparator circuit comprises the control loop of being made up of potentiometer Rp1 and resistance R 22 series connection circuit network even, be connected on and form a branch road between power Vcc and the ground, the self-cleaning contact of potentiometer Rp1 is connected on the in-phase input end (9) of comparator through resistance R 24, the self-cleaning contact of adjusting Rp1 can change the reference voltage on the comparator in-phase input end (9), the spacing speed setting value of the corresponding internal-combustion engine of this reference voltage.
Comparator circuit also comprises by resistance R 26 and R27 series connection and is connected on the potential-divider network of forming between comparator N output terminal (12) and the ground, tie point between resistance R 26 and the R27 (13) joins through resistance R 25 and comparator in-phase input end, make comparator have hysteretic characteristic, change the resistance of resistance R 24-R27, can change comparator loop output characteristics line hysteresis width.
Detect control wiring and also comprise the phase inverter of forming by transistor V16 and resistance R 28, R29, the level signal that comparator loop output terminal (13) is located gives anti-phase, the composite pipe power amplifier loop of forming by voltage-stabiliser tube V19 and transistor V17, V18, with inversion signal in to amplify, by relay K or directly drive solenoid valve and drive internal-combustion engine parking actuator, realize oil-break, the braking control of dying.
The utility model working procedure is as follows: when power Vcc is connected, potentiometer Rp1 and resistance R 22 are set up a reference voltage through resistance R 24 on comparator in-phase input end (9), make comparator output terminal be in high-impedance off-state, it is high level first state, is low level with level signal after anti-phase, the power amplifier loop is owing to the threshold effect of voltage-stabiliser tube ends, above-mentioned electric controller no signal output, solenoid valve parking actuator is failure to actuate, and the internal-combustion engine speed-adjusting and control system is not made a difference.
When internal combustion engine operation, from the alternation induction electromotive force frequency signal on the magnetoelectricity speed probe, after the conversion of f/v loop, (7) are gone up and are produced a control voltage that is directly proportional with internal-combustion engine rotational speed at the control point, rising along with rotating speed, voltage on the control point (7) rises gradually, when this voltage greater than going into giving on the end (9) at homophase relatively when establishing reference voltage, the output terminal of comparator (12) just immediately from its first state high level cut-off state change to second state both this level signal of low level on state after phase inverter is anti-phase, make the power amplifier loop become conducting by ending, directly or through relay K drive solenoid valve parking actuator realization internal-combustion engine oil-break by the power amplifier loop, the braking of dying is controlled, slow down or parking, and can send light and sound alarm.
Because the present embodiment that said structure is formed can be applied to realize on the various internal-combustion engines machine run maximum speed is limited requirement with safety protection easily, the utlity model has tangible advantage.
Claims (4)
1, a kind of internal-combustion engine hypervelocity security insurance electric controller, magnetoelectric transducer by internal combustion engine flywheel starting gear ring top, and cooperate the electronic detection control circuit and drive solenoid valve, solenoid valve drives parking actuator and forms, it is characterized in that, the magnetoelectricity speed probe that is fixedly mounted on internal combustion engine flywheel gear ring top or is provided with gear top that the internal-combustion engine main shaft links and in carrying out circuit is provided with the electronic detection control circuit, and forms actuator with the calutron that is installed on the internal-combustion engine.
2, insurance electric controller according to claim 1, it is characterized in that, magnetoelectricity speed probe (1) is by the screw thread of self, tightening nut (2), through seat level (3) with the flywheel starting gear ring of internal-combustion engine or the gear (5) that links with main shaft, by screw (4) radially vertical fixing be installed on the internal-combustion engine.
3, insurance electric controller according to claim 1 is characterized in that, detects control circuit by voltage to frequency transmitter-f/v circuit, and rotating speed is provided with circuit, comparator circuit, and phase inverter, power magnification circuit is formed.
4, insurance electric controller according to claim 1 is characterized in that, detects control circuit and partly is positioned at special cabinet, and by lead, connector assembly is electrically connected with magnetoelectricity speed probe, power supply and solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94221110 CN2240048Y (en) | 1994-09-10 | 1994-09-10 | Overspeed safety electric control device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94221110 CN2240048Y (en) | 1994-09-10 | 1994-09-10 | Overspeed safety electric control device for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2240048Y true CN2240048Y (en) | 1996-11-13 |
Family
ID=33835503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94221110 Expired - Fee Related CN2240048Y (en) | 1994-09-10 | 1994-09-10 | Overspeed safety electric control device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2240048Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085392A (en) * | 2014-06-06 | 2014-10-08 | 潍柴动力股份有限公司 | Over-speeding protection method, device and system |
| CN113791348A (en) * | 2021-09-28 | 2021-12-14 | 中国科学院半导体研究所 | Phase signal detection device of alternating current generator |
-
1994
- 1994-09-10 CN CN 94221110 patent/CN2240048Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085392A (en) * | 2014-06-06 | 2014-10-08 | 潍柴动力股份有限公司 | Over-speeding protection method, device and system |
| CN113791348A (en) * | 2021-09-28 | 2021-12-14 | 中国科学院半导体研究所 | Phase signal detection device of alternating current generator |
| CN113791348B (en) * | 2021-09-28 | 2023-02-24 | 中国科学院半导体研究所 | Phase signal detection device of alternating current generator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204506581U (en) | A kind of controller of current vortex retarder | |
| CN2240048Y (en) | Overspeed safety electric control device for internal combustion engine | |
| CN201096016Y (en) | Engines monitoring instrument | |
| CN2152078Y (en) | Lubrication system safety monitor | |
| CN2329774Y (en) | Over-speed prevention protection controller for diesel engine of diesel locomotive | |
| CN2893166Y (en) | Engine trouble protector | |
| CN2244622Y (en) | Unloading regulating electro-controlled apparatus for diesel engine | |
| CN102114772A (en) | Electric piston-driven electric vehicle suitable for downhill braking | |
| CN206678788U (en) | New energy electric vehicle electric electronic throttle master control borad assembly | |
| CN200978763Y (en) | Digital lighter realizing accurate speed limiting | |
| CN2403643Y (en) | Automatic alarming anticollision brake for vehicle | |
| CN2857332Y (en) | Smart control circuit of electrical eddy current speed reducer | |
| CN2575307Y (en) | Flameout device of automobile engine | |
| CN2325528Y (en) | Electric controlled flame-out and lubricant being short of pressure protector | |
| CN2169700Y (en) | Electromechanic integrate automobile electronic igniter | |
| CN2189647Y (en) | Internal-combustion machinery and circuit protector for vehicle | |
| CN207934547U (en) | The detection device that stall is fallen is prevented in a kind of Garage lifting system | |
| CN2306903Y (en) | Electronic speed-limiting device for power-assisted vehicle | |
| CN2578148Y (en) | Rainproof device of vehicle | |
| CN201907408U (en) | Electric power piston driving type electric motor car | |
| CN201162576Y (en) | High-efficiency diesel oil economizer for automobile | |
| CN2439968Y (en) | Oil-electric alternatively-operated automobile controller | |
| CN1009294B (en) | Regulate the electric control device of the permanent merit of diesel engine | |
| CN2032959U (en) | Low-speed high-efficiency lighting unit for tractor | |
| CN2463241Y (en) | Theft and hijack preventing alarm controller for vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |