CN108119252A - A kind of diesel engine stops in emergency circuit and its implementation - Google Patents

A kind of diesel engine stops in emergency circuit and its implementation Download PDF

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Publication number
CN108119252A
CN108119252A CN201810000879.8A CN201810000879A CN108119252A CN 108119252 A CN108119252 A CN 108119252A CN 201810000879 A CN201810000879 A CN 201810000879A CN 108119252 A CN108119252 A CN 108119252A
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China
Prior art keywords
emergency
circuit
switch
power supply
type relay
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CN201810000879.8A
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CN108119252B (en
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不公告发明人
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Nantong Yuxiang Optical Component Co Ltd
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Nantong Yuxiang Optical Component Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

It stops in emergency circuit and its implementation the invention discloses a kind of diesel engine, circuit is：There is the parking major loop of detection electric current relay including string, stop back-up circuit, the switch failure fault control circuit of major loop overcurrent and its switch module, major loop undercurrent switching control circuit, switch failure short-circuit detecting circuit in major loop, spare coil is powered and open circuit and controls the measure loop that whether fails of its switch enabled and accordingly alarm circuit in advance.Method is that major loop undercurrent, overcurrent are switched to back-up circuit and stop；Whether the spare coil switch that open circuit whether non-to spare coil and control enable before enabling is intact during the non-emergent parking of diesel engine and during stopping in emergency is detected identification, it is powered in advance to for use spare coil during stopping in emergency, facilitates a handoff to back-up circuit and quickly stop；Major loop overcurrent cancels protecting for its circuit when removing power supply, and switch short cancels protecting for its circuit when stopping in emergency in major loop.

Description

A kind of diesel engine stops in emergency circuit and its implementation
Technical field
The invention belongs to diesel engine safety protection technique fields, and in particular to diesel engine stop in emergency Electromagnetic Valve Circuit failure Switching, warning circuit and its implementation.
Background technology
At present：The emergency stopping system of diesel engine dies and oil-break two ways to stopping in emergency for diesel engine, dies Mode is the installation Electromagnetic Control valve at inlet and outlet mouth, can in case of emergency control valve be died；Oil-break mode be Install oil-break Electromagnetic Control valving on oil circuit additional, it can urgent oil-break when failure occurs.These Electromagnetic Control valves are i.e. logical The often signified solenoid valve that stops in emergency.It is designed when the solenoid valve that the solenoid valve that stops in emergency uses is normal-closed electromagnetic valve The Electromagnetic Valve Circuit that stops in emergency stops for degaussing (dead electricity)；When the solenoid valve that the solenoid valve that stops in emergency uses is normal-open electromagnetic valve When it is designed stop in emergency Electromagnetic Valve Circuit for magnetic (energization) stops.Magnetic (energization) parking is stopped and obtains in degaussing (dead electricity) In two methods, what prior art Literature was recorded：Diesel engine died with degaussing or the solenoid valve of oil-break set it is urgent There are many Electromagnetic Valve Circuit monitoring alarm method in vehicle-parking circuit, just do not sketch herein, only to the main problem of degaussing parking method It reiterates：It misses the bus and stops！When parking power loss and/or the Electromagnetic Valve Circuit that stops in emergency disconnect, diesel engine mistakenly stop vehicle influences bavin Oil machine normal operation.And diesel engine with magnetic died or the solenoid valve of oil-break set the circuit that stops in emergency in solenoid valve Monitor loop alarm method is seldom.Diesel engine with magnetic died or the solenoid valve of oil-break set stop in emergency circuit work Process is：The solenoid valve that stops in emergency when diesel engine works normally is in dead electricity (loss of excitation) state, that is, the solenoid valve that stops in emergency loses During electricity condition its control die, oil-break valve is logical；When in urgent and significant trouble to the solenoid valve that stops in emergency Be powered (magnetic), closes the dying of its control, oil-break valve, realizes that diesel engine stops in emergency.However, for diesel engine with magnetic Died or the solenoid valve of oil-break set the circuit that stops in emergency in, when need to stop in emergency, the positive normal open of the solenoid valve that stops in emergency Electric diesel engine ability emergency stop, when line fracture, coil open circuit, coil short and power supply occurs in the electromagnetic valve coil that stops in emergency Electrical contact is bad when failures, need to stop in emergency, can not just be closed by the solenoid valve that stops in emergency its control die, oil-break Valve causes failure of stopping in emergency, so that the safety of diesel engine cannot ensure.Therefore for magnetic is died or oil-break The diesel engine that sets of solenoid valve stop in emergency circuit, to ensure the execution of diesel engine (diesel-driven generator) safe shutdown, be badly in need of It is detected and alarms to whether the corresponding Electromagnetic Valve Circuit that stops in emergency fails.Although being documented, such as number of patent application For：201510846141.X a kind of diesel engine stop in emergency Electromagnetic Valve Circuit failure alarm circuit and its alarm method, be equipped with The redundant configuration of stand-by power supply and solenoid valve (being similarly normal-open electromagnetic valve) solves：It is switched to during parking power loss spare Power supply is powered；Control recognizes Electromagnetic Valve Circuit disconnection of stopping in emergency when stopping in emergency, be switched to spare solenoid valves work, Pass through the dying of spare solenoid valve closing control, oil-break access.Perfect set is seemed actually to can not be achieved at all：Parking Stand-by power supply power supply is switched to during power loss；The Electromagnetic Valve Circuit that stops in emergency when control is stopped in emergency disconnects, and is switched to standby It is worked with solenoid valves, passes through the dying of spare solenoid valve closing control, oil-break access.On when stop power loss when not The reasons why stand-by power supply is powered, which may be switched to, is：Because specific control parking power supply and the current mode relay of stand-by power supply switching The rated current of device coil (the second current relay coil) be greater than or equal to parking power supply rated current, and with the electric current The specified electricity that can not possibly be greater than or equal to parking power supply using LED as the electric current that the first alarm lamp flows through of type relay coil concatenation Stream, otherwise will not with LED as alarm lamp；When stop power loss when, it is assumed that flow through and the current relay coil string What is connect is greater than or equal to the rated current of parking power supply using LED as the electric current that the first alarm lamp flows through, and the current relay is complete Into parking power supply and stand-by power supply switch operating, so the rated current of requirement alarm power supply is greater than or equal to parking again Otherwise the rated current of power supply cannot normally complete switching parking power supply and switch with stand-by power supply；Again because with using LED as second The rated current of the current relay coil (the 3rd current relay coil) of alarm lamp concatenation, which also requires that, to be more than or waits In the rated current of parking power supply, so in order to ensure alarm power supply works normally, the volume of alarm power supply is just necessarily required Constant current is greater than or equal to two times of rated current or more of parking power supply, and the specified of power supply of alarming actually in engineering design Current requirements can not possibly be relevant with the rated current for the power supply that stops, the electric current individually flowed through with the alarm lamp for power supply power supply of alarming It is required that it is also impossible to relevant with the rated current for the power supply that stops and is wanted with the current relay coil for power supply power supply of alarming The rated current asked be also impossible to stop power supply rated current it is relevant, equally unlikely require each alarm lamp stream The electric current crossed is greater than or equal to the rated current of the power supply for its power supply.On the solenoid valve that stops in emergency when control is stopped in emergency Circuit disconnects, it is impossible to which being switched to the reasons why spare solenoid valves work is：It is serially connected in the electricity for the Electromagnetic Valve Circuit that stops in emergency Identification is less than the situation that the Electromagnetic Valve Circuit that stops in emergency disconnects at all for flow pattern relay (the first current relay), because concatenation Current relay coil (the first current relay coil) of the Electromagnetic Valve Circuit that the stops in emergency invention setting requirements its Rated current is greater than or equal to the rated current of parking power supply, and feelings are disconnected less than emergency stop vehicle Electromagnetic Valve Circuit so as to identify at all Condition, concrete reason are：1. the situation of the short circuit for the Electromagnetic Valve Circuit that stops in emergency can only be recognized, because the solenoid valve that stops in emergency returns During the normal power-up work of road, the normal current of set generation can not possibly be greater than or equal to the rated current of parking power supply, such as Electric current caused by fruit is greater than or equal to the rated current of parking power supply, short circuit occurs in that Electromagnetic Valve Circuit that stops in emergency certainly Phenomenon；2. when the current relay for being serially connected in the Electromagnetic Valve Circuit that stops in emergency is not recognized more than or equal to parking power supply Rated current, the Electromagnetic Valve Circuit institute galvanization that can only illustrate to stop in emergency are in normal range (NR) or because loose contact resistance become larger electricity Stream is equal to zero less than normal value or direct breaking current；3. because it is serially connected in the current relay for the Electromagnetic Valve Circuit that stops in emergency The situation of the short circuit for the Electromagnetic Valve Circuit that stops in emergency can only be recognized, so as to occur stopping in emergency Electromagnetic Valve Circuit institute galvanization not Pipe is in when normally, being also less than normal (such as open circuit)：Assuming that the 3rd current relay line being serially connected on the second alarm lamp The rated current that institute's galvanization is greater than or equal to parking power supply is enclosed, then spare solenoid valve is similarly in obtain electric working condition；It is actual On be serially connected in the 3rd current relay coil institute galvanization on the second alarm lamp and can not possibly be greater than or equal to parking power supply Rated current, so when the Electromagnetic Valve Circuit institute's galvanization that stops in emergency is regardless of being in normally, is also less than normally (as breaking) Spare solenoid valve must not electricity；4. because when the current relay for being serially connected in the Electromagnetic Valve Circuit that stops in emergency can only recognize promptly The situation of the short circuit in electromagnetic valve for braking circuit, when the electric current for the Electromagnetic Valve Circuit that stops in emergency is greater than or equal to the specified of parking power supply During electric current, to stopping in emergency, Electromagnetic Valve Circuit is not cut off, and in the same old way in "on" position, and has been turned off the standby electricity that has no problem Magnet valve, therefore the Electromagnetic Valve Circuit short-circuit protection work that stops in emergency is not had, spare solenoid valve can not be switched to and stopped in emergency, Certainly overload protective function can not be played to parking power supply.Further reaffirm：Because of two current modes being serially connected on alarm lamp The rated current of relay coil is required to the rated current for being greater than or equal to parking power supply, hardly possible to the rated current of alarm power supply Two times of rated current more than or equal to parking power supply or more！And each with LED as alarm lamp light when the electric current that flows through More than or equal to the rated current of parking power supply！Otherwise, the current relay being serially connected on alarm lamp is had no idea work.When So also number of patent application is：201510845456.2 a kind of diesel-driven generator stop in emergency Electromagnetic Valve Circuit Failure Alarm electricity Road and its alarm method, the redundant configuration equipped with stand-by power supply and solenoid valve (being similarly normal-open electromagnetic valve) solve：Parking electricity Stand-by power supply power supply is switched to during the dead electricity of source；Control recognizes Electromagnetic Valve Circuit disconnection of stopping in emergency when stopping in emergency, be switched to The work of spare solenoid valves passes through the dying of spare solenoid valve closing control, oil-break access.Emitting seemingly realizes above-mentioned function, But to be except there are number of patent application：201510846141.X a kind of diesel engine stop in emergency Electromagnetic Valve Circuit Failure Alarm electricity Road and its alarm method it is all there are the problem of and defect, be electricity caused by diesel-driven generator also there are power supply used in alarm lamp It directly powers, alarm lamp indicates to can't see at all after diesel-driven generator emergency stop vehicle, because when controlling diesel-driven generator emergency stop, uses Family can not possibly stare at alarm lamp and see, it may be noted that once alarm lamp instruction state only after emergency stop, however diesel-driven generator emergency stop is not How power generation, what is said or talked about have power supply output.And from number of patent application 201510846141.X and number of patent application 201510845456.2 Advantageous effect content described in specification is seen：Diesel engine (diesel generator) stop in emergency Electromagnetic Valve Circuit Failure Alarm electricity Road can carry out self-shield in time in device fails, to ensure its Electromagnetic Valve Circuit normal work of stopping in emergency, so as to Realize the automatic emergency stop-working protection of diesel engine (diesel generator) in abnormal cases.Further illustrate number of patent application The attached drawing of 201510846141.X and number of patent application 201510845456.2 is diesel engine main control module to diesel engine (diesel engine Generator) the Electromagnetic Valve Circuit failure alarm circuit that stops in emergency send emergency shutdown instruction, control switch module switch connection after Diesel engine (diesel generator) stop in emergency Electromagnetic Valve Circuit failure alarm circuit structure diagram, that is to say, that patent Shen Please the attached drawing of number 201510846141.X and number of patent application 201510845456.2 be diesel engine (bavin when stopping in emergency Diesel engine) stop in emergency Electromagnetic Valve Circuit failure alarm circuit structure diagram, so as to furtherly understand patent Shen Please number 201510846141.X and the diesel engine (diesel generator) described in number of patent application 201510845456.2 use Stop in emergency solenoid valve for magnetic electromagnetic valve for braking.
It is well-known：In working process of diesel engine, as long as the Electromagnetic Valve Circuit that stops in emergency is normal, spare solenoid valve is just constantly in Idle state, the whether breaking user of coil of spare solenoid valve can not know.When stopping in emergency, if the solenoid valve that stops in emergency returns Road is abnormal (such as undercurrent), the spare Electromagnetic Valve Circuit being just switched to stops in emergency, but at this time if spare solenoid valve Coil is in open circuit, then the spare Electromagnetic Valve Circuit being switched to will be unable to stop in emergency by spare solenoid valve.
It is well-known simultaneously：Redundancy is carried out using two electromagnetic valve for braking, realization is reliably stopped in emergency, but installs inconvenience, and It is of high cost.
The content of the invention
The purpose of the present invention in order to solve defect existing in the prior art, for magnetic is died or the electromagnetism of oil-break The diesel engine that valve is set stops in emergency, and provides a kind of diesel engine and stops in emergency circuit and its implementation, stop in emergency electromagnetism Valve uses Double coil electromagnetic valve, and the function of realization has：Parking power-fail is switched to stand-by power supply power supply, works as when stopping in emergency Solenoid valve main coil circuit undercurrent, the overcurrent of stopping in emergency are switched to spare coil circuit and stop in emergency, and stop in emergency electromagnetism Tripping protection is carried out to it when valve main coil circuit overcurrent or the control switch failure short circuit of main coil circuit, ensures the electricity that stops in emergency Road works normally and prevents mistakenly stop；To standby before being enabled during the non-emergent parking of diesel engine with spare coil during stopping in emergency Be detected identification with whether the whether non-open circuit of coil and the switch that enables of control intact, and before spare coil enables to its into Row is pre- to be powered, to be cut when changing to spare coil work, and spare coil rapidly enters normal through-flow magnetic, that is, stop in emergency solenoid valve The valve of control is closed in action, is stopped in emergency；And indicator light is carried out to failure and is prompted respectively.
In order to realize above-mentioned purpose, the technical solution of realization of the invention is：
A kind of diesel engine stops in emergency circuit, including parking power supply DC1, stand-by power supply DC2, alarm power supply DC3, first voltage type Relay, second voltage type relay, tertiary voltage type relay, the 4th voltage-type relay, the 5th voltage-type relay, One current relay, the second current relay, the solenoid valve that stops in emergency, Fisrt fault indicator light MIL1, the second failure refer to Show that lamp MIL2, the 3rd malfunction indicator lamp MIL3, the 4th malfunction indicator lamp MIL4, the 5th malfunction indicator lamp MIL5, the 6th failure refer to Show lamp MIL6, first switch module K1, second switch module K2, the 3rd switch module K3, first switch pipe 100, second switch Pipe 200, diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, diode D7, diode D8, diode D9, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, One photoelectrical coupler U1, the second photoelectrical coupler U2, controllable silicon SCR；The solenoid valve that stops in emergency stops in emergency for twin coil Solenoid valve, that is, the coil for the solenoid valve that stops in emergency is by solenoid valve main coil VC1 and the solenoid valve siding that stops in emergency of stopping in emergency Enclose VC2 compositions；The first voltage type relay coil KV11 directly power supply DC1 and connects with parking, the anode of parking power supply DC1 Be connected with the normally open end of first voltage type relay two-way contact KV12, the anode of stand-by power supply DC2 and first voltage type after The normal-closed end of electric appliance two-way contact KV12 is connected, and the cathode of stand-by power supply DC2 is connected with the cathode for the power supply DC1 that stops；Institute The anode concatenation tertiary voltage type relay normally closed contact KV33 of the solenoid valve main coil VC1 that stops in emergency stated, the second current mode It is public with first voltage type relay two-way contact KV12 after relay coil KI21, the first current relay coil KI11 End is connected, after the switch of the cathode of the solenoid valve main coil VC1 that stops in emergency concatenation first switch module K1 with the power supply DC1 that stops Cathode be connected, with parking power supply DC1 or stand-by power supply DC2 form first parking circuit, it is described first parking circuit For the major loop that stops in emergency, that is, solenoid valve main coil circuit of stopping in emergency；Described stops in emergency solenoid valve spare coil VC2's Anode is connected with the common port of first voltage type relay two-way contact KV12, stops in emergency solenoid valve spare coil VC2's It is connected after cathode concatenation second voltage type relay normally open contact KV22 with the cathode for the power supply DC1 that stops, with the power supply DC1 that stops Or stand-by power supply DC2 forms Article 2 parking circuit, the Article 2 parking circuit is the back-up circuit that stops in emergency, i.e., promptly stops Vehicle solenoid valve spare coil circuit；One end of second current relay normally opened contact KI22 is connected with one end of resistance R8, One end phase of the other end of resistance R8 and tertiary voltage type relay coil KV31 and to access first voltage type relay after connecing double To the common port of contact KV12, the other end of tertiary voltage type relay coil KV31 be connected with the anode of controllable silicon SCR and The anode of diode D8 is connected with each other, and the cathode of diode D8 is connected with the anode of diode D9, the cathode string of diode D9 Connect the cathode of access parking power supply DC1 after the 5th voltage-type relay normally open contact KV52, the control pole of controllable silicon SCR and second The other end of current relay normally opened contact KI22 and one end phase of resistance R9 simultaneously connect, cathode and the resistance R9 of controllable silicon SCR Other end phase and after connecing access parking power supply DC1 cathode, form Article 3 with parking power supply DC1 or stand-by power supply DC2 and stop Vehicle circuit, Article 3 parking circuit are the switch failure fault control of major loop overcurrent and first switch module of stopping in emergency Circuit；One end of first current relay normally-closed contact KI12 and the common port of first voltage type relay two-way contact KV12 It is connected, the other end accesses parking after being sequentially connected in series the switch of second voltage type relay coil KV21, second switch module K2 The cathode of power supply DC1 forms Article 4 parking circuit, the Article 4 parking circuit with parking power supply DC1 or stand-by power supply DC2 For the undercurrent switching control circuit for the major loop that stops in emergency；One end of 4th voltage-type relay coil KV41 and first voltage type The common port of relay two-way contact KV12 is connected, and other end access is stopped in emergency the cathode and the of solenoid valve main coil VC1 On the connecting line of one switch module K1 switches, Article 5 parking circuit is formed with parking power supply DC1 or stand-by power supply DC2, it is described Article 5 parking circuit is the switch on/off measure loop of first switch module in major loop of stopping in emergency；The resistance R3's One end of one end and resistance R7 and after connecing access stop in emergency the cathode of solenoid valve spare coil VC2 and second voltage type relay On the connecting line of normally opened contact KV22, the other end of resistance R3 and the anode of the anode of diode D4 and diode D5 are mutually simultaneously It connects, on the connecting line of the cathode access second voltage type relay coil KV21 and second switch module K2 switches of diode D4, The cathode of diode D5 is connected with the anode of diode D6, and the cathode of diode D6 is connected with one end of resistance R4, resistance The other end of R4 and the control terminal of second switch pipe 200 and one end of resistance R5 are connected with each other, the other end of resistance R5 and second The cold end of switching tube 200 is connected with the cathode for the power supply DC1 that stops, the hot end of second switch pipe 200 and the first light The cathode of light emitting diode is connected in electric coupler U1, the anode series resistance of light emitting diode in the first photoelectrical coupler U1 Common port after R6 with first voltage type relay two-way contact KV12 is connected, the other end of resistance R7 and the second photoelectric coupling The anode of light emitting diode is connected in device U2, the cathode access second voltage type of light emitting diode in the second photoelectrical coupler U2 On the connecting line of relay coil KV21 and second switch module K2 switch, the is formed with parking power supply DC1 or stand-by power supply DC2 Six parking circuits, Article 6 parking circuit are to stop in emergency back-up circuit failure detection and what spare coil was powered in advance returns Road；First voltage type relay normally closed contact KV13 power supply DC3 and connects after concatenating the 3rd malfunction indicator lamp MIL3 with alarm, with report Alert power supply DC3 forms parking power-fail alarm circuit；Tertiary voltage type relay normally open contact KV32 concatenates the second failure and refers to Show after lamp MIL2 with alarm power supply DC3 and connecing, formed with alarm power supply DC3 and physical break protection is carried out to the major loop that stops in emergency When alarm circuit, that is, the alarm circuit during switch failure short circuit of major loop overcurrent of stopping in emergency or/and first switch module； First current relay normally-closed contact KI13 is concatenated with Fisrt fault indicator light MIL1, one end after concatenation and alarm power supply The anode of DC3 is connected, the other end after concatenation and the anode of diode D7 and second voltage type relay normally open contact KV23 One end it is connected with each other, the cathode of diode D7 concatenates the cathode phase with the power supply DC3 that alarms after the switch of the 3rd switch module K3 Connection, the other end of second voltage type relay normally open contact KV23 are connected with the cathode for the power supply DC3 that alarms, with power supply of alarming DC3 forms the alarm of second switch module K2 switch failure short circuits in stop in emergency major loop undercurrent and undercurrent switching control circuit Circuit；The collector of illuminated triode is connected with the anode for the power supply DC3 that alarms in second photoelectrical coupler U2, the second photoelectricity coupling The cathode that diode D7 is accessed after the 4th malfunction indicator lamp MIL4 of emitter concatenation of illuminated triode in clutch U2 is opened with the 3rd On the connecting line for closing module K3 switches, stop in emergency spare time in for use during stopping in emergency with alarm power supply DC3 compositions The alarm circuit whether road fails；The cold end of first switch pipe 100 is connected with the cathode for the power supply DC3 that alarms, and first opens The hot end for closing pipe 100 is sequentially connected in series the 5th voltage-type relay coil KV51, the 4th voltage-type relay normally open contact The anode of access alarm power supply DC3, one end of resistance R1 are connected with the anode for the power supply DC3 that alarms after KV42, and resistance R1's is another One end and the anode of diode D1 and the anode of diode D2 are connected with each other, the cathode of the cathode access diode D7 of diode D1 On the connecting line switched with the 3rd switch module K3, the cathode of diode D2 is connected with the anode of diode D3, diode D3 Cathode and one end of resistance R2 and the control terminal of first switch pipe 100 it is connected with each other, the other end of resistance R2 and alarm power supply The cathode of DC3 is connected, and the switch failure short circuit that first switch module in the major loop that stops in emergency is formed with alarm power supply DC3 is examined Survey control loop；The 4th voltage-type relay normally open contact KV42 and the 5th voltage-type are accessed in 5th malfunction indicator lamp MIL5 one end On the connecting line of relay coil KV51, form first switch module switch in the major loop that stops in emergency with alarm power supply DC3 and lose The alarm circuit of effect；The hot end of one end access first switch pipe 100 of 6th malfunction indicator lamp MIL6, the 6th indicating fault The other end of lamp MIL6 is connected with the emitter of illuminated triode in the first photoelectrical coupler U1, in the first photoelectrical coupler U1 The collector of illuminated triode is connected with the anode for the power supply DC3 that alarms, tight during forming non-emergent parking with alarm power supply DC3 The alarm circuit whether emergency stop vehicle back-up circuit fails；The control terminal of the first switch module K1, second switch module K2 It is connected after control terminal and the control terminal of the 3rd switch module K3 are connected with each other with the output of diesel engine main control module；Described first Switching tube 100 is N-type metal-oxide-semiconductor or the first switch pipe 100 is NPN type triode；The second switch pipe 200 is N-type Metal-oxide-semiconductor or the second switch pipe 200 are NPN type triode.
The above-described solenoid valve that stops in emergency stops in emergency solenoid valve for twin coil, that is, the coil for the solenoid valve that stops in emergency By advocating peace, spare two groups of coils form, and any of which group coil is powered in two groups of coils or two groups of coils are powered simultaneously, promptly stops Vehicle solenoid valve obtain magnetic action close its control die or the valve of oil-break, realize diesel engine stop in emergency；Two groups of coils are During power failure state, the solenoid valve that stops in emergency is in loss of excitation state, solenoid valve control of stopping in emergency die or the valve of oil-break at In unlatching；It stops in emergency and is set as the solenoid valve main coil VC1 that stops in emergency, another group of setting for one group in two groups of coils of solenoid valve For the solenoid valve spare coil VC2 that stops in emergency.
The rated current of above-described first current relay coil KI11 is set equal to solenoid valve master of stopping in emergency The extinction current of coil VC1；The rated current of the second current relay coil KI21 is set equal to stop in emergency The maximum allowed current of solenoid valve main coil VC1.
Above-described first voltage type relay two-way contact KV12, second voltage type relay normally open contact KV22, And the maximum currents that allow to flow through of tertiary voltage type relay normally closed contact KV33 are equal to or the volume more than parking power supply DC1 Constant current.
The above-described extinction current for stopping in emergency solenoid valve main coil VC1 refers to：Ensure the electromagnetism that stops in emergency Valve works normally and flows through the minimum current for the solenoid valve main coil VC1 that stops in emergency.
The above-described maximum allowed current for stopping in emergency solenoid valve main coil VC1 refers to：Ensure the electromagnetism that stops in emergency Valve works normally, and will not burn out the maximum operating currenbt for the solenoid valve main coil VC1 that stops in emergency.
When above-described first switch pipe 100 and second switch pipe 200 are N-type metal-oxide-semiconductor, the grid of N-type metal-oxide-semiconductor is the The control terminal of one switching tube 100 and second switch pipe 200, the drain electrode of N-type metal-oxide-semiconductor is first switch pipe 100 and second switch pipe 200 hot end, the source electrode of N-type metal-oxide-semiconductor is first switch pipe 100 and the cold end of second switch pipe 200；Described When one switching tube 100 and second switch pipe 200 are NPN type triode, the base stage of NPN type triode is 100 He of first switch pipe The control terminal of second switch pipe 200, the height electricity of current collection extremely the first switch pipe 100 and second switch pipe 200 of NPN type triode Position end, the transmitting extremely cold end of first switch pipe 100 and second switch pipe 200 of NPN type triode.
Above-described diode D1, D2, D3, D4, D5, D6, D7, D8 and D9 are switching diode；The N-type Metal-oxide-semiconductor is the enhanced metal-oxide-semiconductor of N-channel；The NPN type triode is NPN type switching transistor；The controllable silicon SCR is The pressure drop of itself is the single-phase silicon-controlled of 1V or so after conducting.
In order to realize above-mentioned purpose, another technical solution of the invention is：
A kind of diesel engine stops in emergency the implementation method of circuit, comprises the following steps:
First, stop power supply DC1 and stand-by power supply DC2 handoff procedures
1) when power supply DC1 outputs of stopping are normal, first voltage type relay coil KV11 obtains electric, first voltage type relay Contact action：
(1) the common port of first voltage type relay two-way contact KV12 and normally open end are connected, and parking power supply DC1 is to parking circuit Power supply,
(2) first voltage type relay normally closed contact KV13 is disconnected, and the 3rd malfunction indicator lamp MIL3 extinguishes；
2) when the power supply DC1 that stops fails, first voltage type relay coil KV11 dead electricity, the contact of first voltage type relay Revert to static state：
(1) the common port of first voltage type relay two-way contact KV12 and normal-closed end are connected, and are switched to stand-by power supply DC2 to stopping Vehicle loop power supply,
(2) first voltage type relay normally closed contact KV13 is connected, and the 3rd malfunction indicator lamp MIL3 is lighted, and user is prompted to stop electric Source DC1 fails；
3) when in stand-by power supply DC2, to during parking loop power supply, when power supply DC1 outputs of stopping revert to normal, first is electric Die mould relay coil KV11 obtains electric, the contact action of first voltage type relay：
(1) the common port of first voltage type relay two-way contact KV12 is connected with normally open end, recovers parking power supply DC1 to parking Loop power supply,
(2) first voltage type relay normally closed contact KV13 is disconnected, and the 3rd malfunction indicator lamp MIL3 lighted extinguishes；
2nd, the process in control parking circuit
1) the 3rd switch module K3 is assert to be intact, and second switch module K2 and first switch module K1 quality are set to unknown：
When diesel engine main control module is sent tightly to first switch module K1, second switch module K2 and the 3rd switch module K3 During emergency stop vehicle control signal, that is, during stopping in emergency, the switch connection of the 3rd switch module K3, first switch module K1's opens Whether pass is connected with the switch of second switch module K2 to be unknown,
When diesel engine main control module is not sent to first switch module K1, second switch module K2 and the 3rd switch module K3 During emergency shut-down control device signal, i.e., during non-emergent parking, the switch of the 3rd switch module K3 disconnects, first switch module K1 Switch and second switch module K2 switch whether be broken as it is unknown；
If 2) switch connection of first switch module K1, the 4th voltage-type relay coil KV41 be powered, the 4th voltage-type after Electric appliance normally opened contact KV42 is connected, otherwise, the 4th voltage-type relay coil KV41 no powers, the 4th voltage-type relay normally open Contact KV42 is disconnected；
3) treat tertiary voltage type relay power, that is, treat that the contact of tertiary voltage type relay enters dynamic：
(1) tertiary voltage type relay normally closed contact KV33 is disconnected, and to stopping in emergency, major loop carries out physical break protection,
(2) tertiary voltage type relay normally open contact KV32 is connected, and lights the second malfunction indicator lamp MIL2, and user is prompted promptly to stop The short circuit of the switch failure of car owner circuit overcurrent or/and first switch module；
4) treat that the detection of the second current relay recognizes and the solenoid valve that stops in emergency is more than by the electric current for the major loop that stops in emergency During main coil VC1 maximum allowed currents, the contact of the second current relay enters dynamic：
(1) illustrate that tertiary voltage type relay coil KV31 is in unpowered state, that is, major loop overcurrent of stopping in emergency and first open Close module switch failure fault control circuit in energization latching member controllable silicon SCR be in cut-off and the 5th voltage-type after Electric appliance normally opened contact KV52, which is in, to be disconnected,
(2) the second current relay normally opened contact KI22 is connected, to stopping in emergency major loop overcurrent and first switch module is opened It closes failure fault control circuit and generates control signal, i.e., trigger circuit is formed to major loop overcurrent of stopping in emergency by resistance R8 and R9 And energization latching member controllable silicon SCR generates trigger signal, triggering in the switch failure fault control circuit of first switch module Controllable silicon SCR turns on, and tertiary voltage type relay coil KV31 is powered through controllable silicon SCR；
5) during the circuit that stops in emergency is in non-emergent parking：
(1) first switch pipe 100 turns on saturation：
If 1. the 6th malfunction indicator lamp MIL6 is lighted, the switch of user's second switch module K2 is prompted to be in and disconnects and stops in emergency Solenoid valve spare coil VC2 is in non-open circuit, if the 6th malfunction indicator lamp MIL6 extinguishes, prompts user's second switch module K2's Switch failure short circuit or/and solenoid valve spare coil VC2 open circuits of stopping in emergency,
2. treating that the 4th voltage-type relay normally open contact KV42 is connected, the 5th voltage-type relay coil KV51 is powered, the 5th electricity Die mould relay normally open contact KV52 is connected, the switch failure short circuit control to stop in emergency major loop overcurrent and first switch module Circuit processed generates control signal：
If latching member is powered in the switch failure fault control circuit of major loop overcurrent of a. stopping in emergency and first switch module Controllable silicon SCR is in triggering and conducting self-locking state, then controllable silicon SCR is kept to turn on self-locking, that is, keeps tertiary voltage type relay Coil KV31 continues to be powered through controllable silicon SCR, and the contact of tertiary voltage type relay is kept in dynamic,
If latching member is powered in the switch failure fault control circuit of major loop overcurrent of b. stopping in emergency and first switch module Controllable silicon SCR is in cut-off state, then controllable silicon SCR is kept to end, and tertiary voltage type relay coil KV31 is made to pass through by two Pole pipe D8, D9 branch is powered, and the contact of tertiary voltage type relay enters dynamic, tertiary voltage type relay coil by static state KV31 is passed through to be always maintained to the 5th voltage-type relay normally open contact KV52 disconnecting by the energization of diode D8, D9 branch, i.e., Recover when being always maintained at into the contact of dynamic tertiary voltage type relay to the 5th voltage-type relay normally open contact KV52 For static state,
(2) treat that the 4th voltage-type relay normally open contact KV42 is connected, light the 5th malfunction indicator lamp MIL5, prompt user first The switch failure short circuit of switch module K1,
(3) treat that second voltage type relay normally open contact KV23 is connected, light Fisrt fault indicator light MIL1, prompt user second The switch failure short circuit of switch module K2,
(4) the 4th malfunction indicator lamp MIL4 extinguishes；
6) during the circuit that stops in emergency is in and stops in emergency：
(1) first switch pipe 100 ends：
1. the 5th voltage-type relay coil KV51 no powers, the contact of the 5th voltage-type relay is in static state, the 5th voltage Type relay normally open contact KV52 is disconnected, not to the switch failure short circuit control of stop in emergency major loop overcurrent and first switch module Circuit processed generates control signal,
2. the 6th malfunction indicator lamp MIL6 extinguishes,
If (2) Fisrt fault indicator light MIL1 extinguishes, the back-up circuit that illustrates to stop in emergency is in for use period, if Fisrt fault refers to Show that lamp MIL1 is lighted, user prompted to stop in emergency major loop undercurrent, and enable back-up circuit control of stopping in emergency and stop in emergency,
(3) during the back-up circuit that stops in emergency is in for use：
If the 4th malfunction indicator lamp MIL4 is lighted, the switch connection of user's second switch module K2 and the solenoid valve that stops in emergency are prompted Spare coil VC2 is in non-open circuit, if the 4th malfunction indicator lamp MIL4 extinguishes, the switch of user's second switch module K2 is prompted to lose Effect open circuit or/and solenoid valve spare coil VC2 open circuits of stopping in emergency,
(4) during the back-up circuit that stops in emergency is enabled, the 4th malfunction indicator lamp MIL4 extinguishes,
(5) non-breaking shape is in when the switch of second switch module K2 is in the solenoid valve spare coil VC2 that connects and stop in emergency State：
1. during the back-up circuit that stops in emergency is in for use, the branch and resistance R7 that are formed through resistance R3 and diode D4 The access formed with the switch of the branch circuit parallel connection that light emitting diode in the second photoelectrical coupler U2 is formed to second switch module K2 To stopping in emergency, solenoid valve spare coil VC2 is powered in advance, and pre- electrical current, which is set in, stops in emergency solenoid valve spare coil VC2's Between 1st/3rd to three/5ths of extinction current,
2. wait enable the back-up circuit that stops in emergency carry out control stop in emergency when, second voltage type relay normally open contact KV22 connects It is logical, light emitting diode in the resistance R3 and diode D4 branches formed and resistance R7 and the second photoelectrical coupler U2 is formed Branch circuit parallel connection to second switch module K2 the access short circuit that is formed of switch, the solenoid valve spare coil (VC2) that stops in emergency is logical It crosses the second voltage type relay normally open contact KV22 connected and rapidly enters normal through-flow magnetic, the solenoid valve that makes to stop in emergency is quick The valve of control is closed in action, is stopped in emergency,
(6) treat that the 4th voltage-type relay normally open contact KV42 is disconnected, the 5th malfunction indicator lamp MIL5 extinguishes, and prompts user first The switch failure open circuit of switch module K1；
7) when the tertiary voltage type relay in energization through controllable silicon SCR by turning on what is formed, wait to remove parking power supply DC1 and Terminated during stand-by power supply DC2 to tertiary voltage type relay power, i.e., be to the physical break protection for the major loop that stops in emergency because Carried out under its circuit overcurrent condition, wait remove parking power supply DC1 and stand-by power supply DC2 when cancel physical break protection；
8) when the tertiary voltage type relay in energization through diode D8, D9 branch by what is formed, the 5th voltage-type relay is treated It is terminated when device normally opened contact KV52 is disconnected to tertiary voltage type relay power, i.e., the physical break for the major loop that stops in emergency is protected Shield be because being carried out in its circuit under the switch failure short-circuit conditions of first switch module, it is pending to cancel physics when stopping in emergency Tripping protection.
The above-described extinction current for stopping in emergency solenoid valve spare coil VC2 refers to：Ensure the electricity that stops in emergency Magnet valve works normally and flows through the minimum current for the solenoid valve spare coil VC2 that stops in emergency.
Because string has tertiary voltage type relay normally closed contact KV33 to be used in the above-described major loop that stops in emergency：It is if tight If the switch failure short circuit of first switch module during emergency stop car owner circuit overcurrent and non-emergent parking, to master of stopping in emergency Circuit carries out physical break protection, that is, tertiary voltage type relay normally closed contact KV33 is controlled to disconnect, to the major loop that stops in emergency It is protected.So during stopping in emergency and during non-emergent parking, the major loop that stops in emergency once has been protected by physical break Shield, then the electric current for the major loop that stops in emergency is zero, i.e. the first current relay normally-closed contact KI12 connection, the first current mode after Electric appliance normally-closed contact KI13 is connected.
Advantageous effect：
A kind of diesel engine of the present invention stops in emergency circuit and its implementation, main feature：
Diesel engine stop in emergency during and non-emergent parking during during the entire process of, once parking power-fail, switching It works to stand-by power supply, and lights the 3rd malfunction indicator lamp MIL3, prompt user's parking power-fail；Power up to be stopped is just Often, parking power supply power supply is automatically returned to.
(2) during non-emergent parking, it is found that the 5th malfunction indicator lamp MIL5 is lighted, illustrate opening for first switch module K1 Close failure short circuit；During stopping in emergency, it is found that the 5th malfunction indicator lamp MIL5 extinguishes, illustrate the switch of first switch module K1 Failure open circuit.
(3) the second malfunction indicator lamp MIL2 is lighted, and illustrating to stop in emergency, there are overcurrent or/and first switch modules for major loop Switch failure short circuit, and physical break protection has been carried out to the major loop that stops in emergency；During non-emergent parking, open because of first The switch failure short circuit for closing module carries out physical break protection to the major loop that stops in emergency, it is therefore prevented that mistakenly stop vehicle；By first switch The switch failure of module is short-circuit and the physical break for major loop progress of stopping in emergency is protected, until removed when being stopped in emergency Disappear, be conducive to the main use major loop that stops in emergency and stop in emergency；And by stop in emergency major loop overcurrent to its circuit into Capable physical break protection, always until being cancelled when removing parking power supply DC1 and stand-by power supply DC2.
(4) during diesel engine stops in emergency：If Fisrt fault indicator light MIL1 is lighted, user is prompted to stop in emergency and is led back Road undercurrent, and enable the back-up circuit that stops in emergency carry out control stop in emergency；If Fisrt fault indicator light MIL1 is lighted, and second Malfunction indicator lamp MIL2 is lighted, and is illustrated because of major loop overcurrent reason of stopping in emergency, and to stopping in emergency, major loop carries out physical break Stop in emergency major loop undercurrent after protection, and what the back-up circuit that stops in emergency enabled was controlled stops in emergency；If the first event Barrier indicator light MIL1 is lighted, and the second malfunction indicator lamp MIL2 extinguishes, and illustrates not carry out physical break to the major loop that stops in emergency The major loop undercurrent that stops in emergency of protection, what the back-up circuit that stops in emergency enabled was controlled stops in emergency, and such as stops in emergency Solenoid valve main coil VC1 open circuits.
(5) during the non-emergent parking of diesel engine, if Fisrt fault indicator light MIL1 is lighted, second switch module K2 is illustrated Switch failure short circuit.
(6) during the non-emergent parking of diesel engine：6th malfunction indicator lamp MIL6 is lighted, and illustrates second switch module K2's Switch disconnects and the non-open circuits of solenoid valve spare coil VC2 of stopping in emergency；When the 6th malfunction indicator lamp MIL6 extinguishings, illustrate that second opens Switch failure short circuit or/and the solenoid valve spare coil VC2 that stops in emergency for closing module K2 are breaking；As the 6th malfunction indicator lamp MIL6 Extinguish, and Fisrt fault indicator light MIL1 is lighted, and illustrates the switch failure short circuit of second switch module K2, stop in emergency solenoid valve Spare coil VC2 is possible to not breaking；When the 6th malfunction indicator lamp MIL6 extinguishings, and Fisrt fault indicator light MIL1 also extinguishes, Illustrate solenoid valve spare coil VC2 open circuits of stopping in emergency.
(7) the back-up circuit that stops in emergency during diesel engine stops in emergency, which is in, treats the used time, if the 4th malfunction indicator lamp MIL4 It lights, illustrates the switch connection of second switch module K2 and the solenoid valve spare coil VC2 that stops in emergency is in non-open circuit, if the 4th Malfunction indicator lamp MIL4 extinguishes, and illustrates the switch failure open circuit of second switch module K2 or/and the solenoid valve siding that stops in emergency Enclose VC2 open circuits.
(8) during non-emergent parking, the 6th malfunction indicator lamp MIL6 is lighted, and during stopping in emergency, the 4th failure refers to Show that lamp MIL4 is lighted, illustrate the switch of second switch module K2 and the solenoid valve spare coil VC2 that stops in emergency enable before it is intact.
(9) during stopping in emergency in diesel engine, before the back-up circuit that stops in emergency enables to its circuit in stop in emergency electromagnetism Valve spare coil VC2 is powered in advance, wait the major loop that stops in emergency break down be switched to stop in emergency back-up circuit work when, So that the solenoid valve spare coil VC2 that stops in emergency rapidly enters normal through-flow magnetic, making to stop in emergency solenoid valve quick acting will The valve of control is closed, and is stopped in emergency.
(10), by the prompting of various trouble lights, be conducive to user and early find that easily worn part damages, carry out maintenance, improve in time The reliability stopped in emergency.
After urgency electromagnetic valve for braking spare coil VC2 one end concatenation second voltage type relay normally open contact KV22 directly with The cathode of parking power supply DC1 is connected, and reduces the switching damage rate of second switch module K2.
(12) the solenoid valve that stops in emergency is stopped in emergency solenoid valve using twin coil, than using two independent solenoid valves, more favorably In installation.
Description of the drawings
A kind of diesel engine that Fig. 1 is the present invention stops in emergency schematic block circuit diagram；
In figure：KV11. first voltage type relay coil, KV12. first voltage type relay two-way contacts, the first electricity of KV13. Die mould relay normally closed contact, KV21. second voltage type relay coils, KV22, KV23. second voltage type relay normally open touch Point, KV31. tertiary voltage type relay coils, KV32. tertiary voltage type relay normally open contacts, KV33. tertiary voltages type after Electric appliance normally-closed contact, the 4th voltage-type relay coils of KV41., the 4th voltage-type relay normally open contacts of KV42., KV51. Five voltage-type relay coils, the 5th voltage-type relay normally open contacts of KV52., KI11. the first current relay coils, The first current relay normally-closed contact of KI12, KI13., KI21. the second current relay coils, the second current modes of KI22. Relay normally open contact, 100. first switch pipes, 200. second switch pipes, bis- pole of D1, D2, D3, D4, D5, D6, D7, D8, D9. Pipe, R1, R2, R3, R4, R5, R6, R7, R8, R9. resistance, the first photoelectrical couplers of U1., the second photoelectrical couplers of U2., SCR. can Control silicon, DC1. parking power supplys, DC2. stand-by power supplies, DC3. alarm power supplys, VC1. stops in emergency solenoid valve main coil, and VC2. is urgent Electromagnetic valve for braking spare coil, MIL1. Fisrt fault indicator lights, the second malfunction indicator lamp of MIL2., the 3rd indicating fault of MIL3. Lamp, the 4th malfunction indicator lamp of MIL4., the 5th malfunction indicator lamp of MIL5., the 6th malfunction indicator lamp of MIL6., K1. first switch moulds Block, K2. second switch modules, the 3rd switch modules of K3..
Specific embodiment
The circuit as shown in Figure 1, a kind of diesel engine stops in emergency, including parking power supply DC1, stand-by power supply DC2, alarm power supply DC3, first voltage type relay, second voltage type relay, tertiary voltage type relay, the 4th voltage-type relay, the 5th Voltage-type relay, the first current relay, the second current relay, the solenoid valve that stops in emergency, Fisrt fault indicator light MIL1, the second malfunction indicator lamp MIL2, the 3rd malfunction indicator lamp MIL3, the 4th malfunction indicator lamp MIL4, the 5th malfunction indicator lamp MIL5, the 6th malfunction indicator lamp MIL6, first switch module K1, second switch module K2, the 3rd switch module K3, first switch Pipe 100, second switch pipe 200, diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, two Pole pipe D7, diode D8, diode D9, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, electricity Hinder R8, resistance R9, the first photoelectrical coupler U1, the second photoelectrical coupler U2, controllable silicon SCR；The solenoid valve that stops in emergency is Twin coil stops in emergency solenoid valve, that is, the coil of the solenoid valve that stops in emergency solenoid valve main coil VC1 and is promptly stopped by stopping in emergency Vehicle solenoid valve spare coil VC2 is formed；The first voltage type relay coil KV11 directly power supply DC1 and connects with parking, stops The anode of vehicle power supply DC1 is connected with the normally open end of first voltage type relay two-way contact KV12, the anode of stand-by power supply DC2 It is connected with the normal-closed end of first voltage type relay two-way contact KV12, the cathode of stand-by power supply DC2 is with parking power supply DC1's Cathode is connected；The anode concatenation tertiary voltage type relay normally closed contact of the solenoid valve main coil VC1 that stops in emergency It is double with first voltage type relay after KV33, the second current relay coil KI21, the first current relay coil KI11 It is connected to the common port of contact KV12, the cathode concatenation first switch module K1's for the solenoid valve main coil VC1 that stops in emergency opens The cathode of Guan Houyu parking power supplys DC1 is connected, and first parking circuit, institute are formed with parking power supply DC1 or stand-by power supply DC2 First parking circuit is stated as the major loop that stops in emergency, that is, solenoid valve main coil circuit of stopping in emergency；The electricity that stops in emergency The anode of magnet valve spare coil VC2 is connected with the common port of first voltage type relay two-way contact KV12, and stop in emergency electricity Cathode phase after the cathode concatenation second voltage type relay normally open contact KV22 of magnet valve spare coil VC2 with the power supply DC1 that stops Connection forms Article 2 parking circuit with parking power supply DC1 or stand-by power supply DC2, and the Article 2 stops circuit promptly to stop Vehicle back-up circuit, that is, solenoid valve spare coil circuit of stopping in emergency；One end of second current relay normally opened contact KI22 with One end of resistance R8 is connected, and the other end of resistance R8 and one end phase of tertiary voltage type relay coil KV31 are simultaneously accessed after connecing The common port of first voltage type relay two-way contact KV12, the other end of tertiary voltage type relay coil KV31 with it is silicon-controlled The anode of SCR is connected and the anode of diode D8 is connected with each other, and the cathode of diode D8 is connected with the anode of diode D9, The cathode of diode D9 concatenates the cathode of access parking power supply DC1 after the 5th voltage-type relay normally open contact KV52, silicon-controlled The control pole of SCR and the other end of the second current relay normally opened contact KI22 and one end phase of resistance R9 simultaneously connect, silicon-controlled The other end phase of the cathode of SCR and resistance R9 and after connecing access parking power supply DC1 cathode, with parking power supply DC1 or standby electricity Source DC2 forms Article 3 parking circuit, and the Article 3 parking circuit is stop in emergency major loop overcurrent and first switch module Switch failure fault control circuit；One end of first current relay normally-closed contact KI12 is double with first voltage type relay It is connected to the common port of contact KV12, the other end is sequentially connected in series second voltage type relay coil KV21, second switch module The cathode of access parking power supply DC1 after the switch of K2 forms Article 4 parking circuit with parking power supply DC1 or stand-by power supply DC2, Article 4 parking circuit is the undercurrent switching control circuit of major loop of stopping in emergency；4th voltage-type relay coil KV41 One end be connected with the common port of first voltage type relay two-way contact KV12, other end access is stopped in emergency solenoid valve master The cathode of coil VC1 is on the connecting line of first switch module K1 switches, the is formed with parking power supply DC1 or stand-by power supply DC2 Five parking circuits, Article 5 parking circuit are the switch on/off detection of first switch module in major loop of stopping in emergency Circuit；One end of the resistance R3 and one end of resistance R7 and after connecing access stop in emergency the cathode of solenoid valve spare coil VC2 With on the connecting line of second voltage type relay normally open contact KV22, the other end of resistance R3 and the anode of diode D4 and two poles The anode of pipe D5 is connected with each other, the cathode access second voltage type relay coil KV21 and second switch module K2 of diode D4 On the connecting line of switch, the cathode of diode D5 is connected with the anode of diode D6, and the cathode of diode D6 is with resistance R4's One end is connected, and the other end of resistance R4 and one end of the control terminal of second switch pipe 200 and resistance R5 are connected with each other, resistance R5 The other end and second switch pipe 200 cold end with stop power supply DC1 cathode be connected, the height of second switch pipe 200 Potential end is connected with the cathode of light emitting diode in the first photoelectrical coupler U1, light emitting diode in the first photoelectrical coupler U1 Anode series resistance R6 after be connected with the common port of first voltage type relay two-way contact KV12, the other end of resistance R7 It is connected with the anode of light emitting diode in the second photoelectrical coupler U2, the cathode of light emitting diode in the second photoelectrical coupler U2 It accesses on the connecting line of second voltage type relay coil KV21 and second switch module K2 switches, with the power supply DC1 or standby that stops Article 6 parking circuit is formed with power supply DC2, and Article 6 parking circuit is the back-up circuit failure detection and standby of stopping in emergency The circuit being powered in advance with coil；First voltage type relay normally closed contact KV13 concatenate the 3rd malfunction indicator lamp MIL3 after with alarm Power supply DC3 simultaneously connects, and parking power-fail alarm circuit is formed with alarm power supply DC3；Tertiary voltage type relay normally open contact KV32 power supply DC3 and connects after concatenating the second malfunction indicator lamp MIL2 with alarm, is led back with alarm power supply DC3 compositions to stopping in emergency Road carries out alarm circuit during physical break protection, that is, the switch mistake of major loop overcurrent of stopping in emergency or/and first switch module Alarm circuit during effect short circuit；First current relay normally-closed contact KI13 is concatenated with Fisrt fault indicator light MIL1, concatenation One end afterwards is connected with the anode for the power supply DC3 that alarms, the other end after concatenation and the anode of diode D7 and second voltage type One end of relay normally open contact KV23 is connected with each other, the cathode of diode D7 concatenate after the switch of the 3rd switch module K3 with report The cathode of alert power supply DC3 is connected, the cathode of the other end and alarm power supply DC3 of second voltage type relay normally open contact KV23 It is connected, second switch module K2 in stop in emergency major loop undercurrent and undercurrent switching control circuit is formed with alarm power supply DC3 The alarm circuit of switch failure short circuit；The collector of illuminated triode is with alarming power supply DC3 just in second photoelectrical coupler U2 Pole is connected, and the emitter of illuminated triode accesses two poles after concatenating the 4th malfunction indicator lamp MIL4 in the second photoelectrical coupler U2 On the connecting line of the cathode of pipe D7 and the 3rd switch module K3 switches, it is in and treats during stopping in emergency with alarm power supply DC3 compositions The alarm circuit whether back-up circuit that stops in emergency fails；The cold end of first switch pipe 100 is with alarm power supply DC3's Cathode is connected, and the hot end of first switch pipe 100 is sequentially connected in series the 5th voltage-type relay coil KV51, the 4th voltage-type The anode of access alarm power supply DC3, one end of resistance R1 are connected with the anode for the power supply DC3 that alarms after relay normally open contact KV42 It connects, the other end of resistance R1 and the anode of the anode of diode D1 and diode D2 are connected with each other, the cathode access of diode D1 On the connecting line of the cathode of diode D7 and the 3rd switch module K3 switches, the cathode of diode D2 and the anode phase of diode D3 Connection, the cathode of diode D3 and the control terminal of one end of resistance R2 and first switch pipe 100 are connected with each other, and resistance R2's is another End is connected with the cathode of alarm power supply DC3, and opening for the first switch module in major loop of stopping in emergency is formed with alarm power supply DC3 Close failure short-circuit detecting control loop；The 4th voltage-type relay normally open contact KV42 is accessed in 5th malfunction indicator lamp MIL5 one end With on the connecting line of the 5th voltage-type relay coil KV51, stopping in emergency in major loop and first opening with alarm power supply DC3 compositions Close the alarm circuit of module switch failure；The hot end of one end access first switch pipe 100 of 6th malfunction indicator lamp MIL6, The other end of 6th malfunction indicator lamp MIL6 is connected with the emitter of illuminated triode in the first photoelectrical coupler U1, the first light The collector of illuminated triode is connected with the anode for the power supply DC3 that alarms in electric coupler U1, is formed with alarm power supply DC3 non-tight Stop in emergency the alarm circuit whether back-up circuit fails during emergency stop vehicle；The control terminal of the first switch module K1, second The control terminal of switch module K2 and the control terminal of the 3rd switch module K3 rear and diesel engine main control module the output phase connected with each other Connection.
The above-described solenoid valve that stops in emergency stops in emergency solenoid valve for twin coil, that is, the coil for the solenoid valve that stops in emergency By advocating peace, spare two groups of coils form, as long as any group of coil is powered in two groups of coils or two groups of coils are powered simultaneously, promptly stop Vehicle solenoid valve obtain magnetic action close its control die or the valve of oil-break, realize diesel engine stop in emergency；Two groups of coils are During power failure state, the solenoid valve that stops in emergency is in loss of excitation state, solenoid valve control of stopping in emergency die or the valve of oil-break at In unlatching.The present invention sets in two groups of coils of the solenoid valve that stops in emergency one group as the solenoid valve main coil VC1 of stopping in emergency, another Group is then the solenoid valve spare coil VC2 that stops in emergency.Coil in the present invention below for the solenoid valve that stops in emergency flows through electric current The discussion of size is：One group of coil is powered, and is carried out in the case of another group of coil no power.
Controllable silicon SCR described above for stop in emergency major loop overcurrent when be powered self-locking.When the second current relay Normally opened contact KI22 is connected, and parking power supply DC1 or stand-by power supply DC2 is provided to controllable silicon SCR control pole by resistance R8, R9 and touched Send out Continuity signal, triggering controllable silicon SCR conducting；When the second current relay normally opened contact KI22 disconnect, parking power supply DC1 and Stand-by power supply DC2 cannot provide triggering and conducting signal by resistance R8, R9 to controllable silicon SCR control pole, you can control silicon SCR control Pole is without triggering Continuity signal；The present invention selects controllable silicon SCR to be single-phase silicon-controlled, and selected controllable silicon SCR after switch itself Pressure drop be about 1V or so, ensure that controllable silicon SCR turn on self-locking during, when the 5th voltage-type relay normally open contact KV52 is connected, and is made to be attempted by the forward direction between controllable silicon SCR anode and cathode and is not turned on along diode D8, D9 of string, has both made the In three voltage-type relay coil KV31 by electric current fall a part from positive diode D8, D9 shunting along string, and flow through The electric current of controllable silicon SCR anode, which is more than, maintains electric current, in order to during more reliably ensuring controllable silicon SCR conducting self-locking, be attempted by Forward direction between controllable silicon SCR anode and cathode does not influence the conducting state that controllable silicon SCR is in along the diode of string, can will just It is attempted by after the suitable string of three diode forwards is changed to along two diodes gone here and there between controllable silicon SCR anode and cathode.Due to stopping Vehicle power supply DC1 and stand-by power supply DC2 rated voltages are generally 24V, during controllable silicon SCR is ended, when the 5th voltage-type relay Device normally opened contact KV52 is connected, and tertiary voltage type relay coil KV31 is powered, and the electric current flowed through is through positive two poles along string Pipe D8, D9 are to the cathode of parking power supply DC1, and the decompression turned on diode D8, D9 does not interfere with tertiary voltage type relay Device, which is powered, to be worked normally, because pressure drop generally can between positive and negative the 10% of coil rated voltage on voltage-type relay coil Normal work.
Above-described first switch module K1, second switch module K2 and the 3rd switch module K3 work as serviceable condition When：In (machine) control signal of stopping in emergency for receiving diesel engine main control module and sending, the switch connection accordingly controlled, i.e., first The switch connection of switch module K1, the switch connection of second switch module K2, the switch connection of the 3rd switch module K3；It is not connecing (machine) control signal of stopping in emergency that diesel engine main control module is sent is received, the switch accordingly controlled is off, i.e., and The switch of one switch module K1 is off, the switch of second switch module K2 is off, the 3rd switch module The switch of K3 is off.
The above is in (machine) control signal of stopping in emergency for receiving diesel engine main control module and sending, that is to say, that this hair The bright circuit that stops in emergency is stopped in emergency at this time in (machine) control signal of stopping in emergency for receiving diesel engine main control module and sending Circuit is operated in control diesel engine and stops in emergency.
The above is in (machine) control signal of stopping in emergency for not receiving diesel engine main control module and sending, that is to say, that this The circuit that stops in emergency of invention is in (machine) control signal of stopping in emergency for not receiving diesel engine main control module and sending, at this time promptly Vehicle-parking circuit is operated in non-controlling diesel engine and stops in emergency.
But in real work：It is just cut because major loop to be stopped in emergency breaks down by the undercurrent for the major loop that stops in emergency It changes control loop energization and is switched to back-up circuit work of stopping in emergency, so the switch of second switch module K2 is with respect to first switch For the switch of module K1：It is less likely to be damaged.And the major loop that stops in emergency is the circuit of the major control parking of the present invention, therefore this In invention for the switch of the opposite second switch module K2 of first switch module K1 switches：It is easiest to damage, such as works as and stop in emergency Solenoid valve main coil VC1 causes its coil short to be just easy to first switch module K1 switching burning short circuit or open after being used for multiple times Road；If not during stopping in emergency, when the short circuit of first switch module K1 switch failures, and urgency electromagnetic valve for braking main coil VC1 is in It is intact, it can cause and stop in emergency by mistake；If during stopping in emergency, first switch module K1 switch failures open circuit directly contributes urgent Stop major loop undercurrent.For the switch of the 3rd switch module K3, due to obstructed inductive load, and due to passing through during work Electric current will not be very big, therefore for the switch of opposite first switch module K1 and the switch of second switch module K2：3rd switch The switch of module K3 is least easily damaged.Therefore assert that the 3rd switch module K3 switches are serviceable condition in the present invention, the One switch module K1 is switched and second switch module K2 switches are unknown state.
In working process of diesel engine, as long as since the major loop that stops in emergency is normal, back-up circuit is stopped in emergency just always In idle state, that is, the solenoid valve spare coil VC2 that stops in emergency just is constantly in idle state, and tight in this idle state The whether breaking users of anxious electromagnetic valve for braking spare coil VC2 can not know.During stopping in emergency, detection, which recognizes, stops in emergency Major loop overcurrent or undercurrent are switched to the back-up circuit that stops in emergency and stop in emergency, if the solenoid valve that stops in emergency at this time is spare Coil VC2 is in open circuit, then the diesel engine circuit that stops in emergency will be unable to make the electromagnetism that stops in emergency by the back-up circuit that stops in emergency Valve spare coil VC2 be powered magnetic stops in emergency.
Above-described first current relay coil KI11：When the electric current flowed through is more than or equal to its rated current the The contact action of one current relay, i.e. normally opened contact are connected, and normally-closed contact disconnects；When the electric current flowed through is less than its specified electricity The contact of the first current relay is in static state during stream, i.e. normally opened contact disconnects, and normally-closed contact is connected.
Above-described second current relay coil KI21：When the electric current flowed through be more than its rated current when second electricity The contact action of flow pattern relay, i.e. normally opened contact are connected, and normally-closed contact disconnects；When the electric current flowed through is less than or equal to its specified electricity The contact of the second current relay is in static state during stream, i.e. normally opened contact disconnects, and normally-closed contact is connected.
The rated current of the first current relay coil KI11 of the above is set equal to anxious electromagnetic valve for braking main coil The extinction current of VC1；The rated current of the second current relay coil KI21 is set equal to anxious electromagnetic valve for braking The maximum allowed current of main coil VC1.
The above-described extinction current for stopping in emergency solenoid valve main coil VC1 is to refer to ensure the electricity that stops in emergency Magnet valve flows through the minimum current for the solenoid valve main coil VC1 that stops in emergency when working normally.
The above-described maximum allowed current for stopping in emergency solenoid valve main coil VC1 is to refer to ensure the electricity that stops in emergency When magnet valve works normally, the maximum operating currenbt that will not burn out the solenoid valve main coil VC1 that stops in emergency is flowed through.
When the electric current that solenoid valve main coil VC1 flows through of stopping in emergency is in its extinction current to maximum during stopping in emergency When between permission electric current, the present invention assert that the solenoid valve main coil VC1 that stops in emergency is in normal operating conditions, otherwise, assert tight It breaks down in emergency stop car owner circuit.
When being stopped in emergency with the back-up circuit that stops in emergency, if the solenoid valve spare coil VC2 that stops in emergency flows through Electric current in its extinction current between maximum allowed current, the identification solenoid valve spare coil VC2 that stops in emergency is in just Otherwise normal working condition, assert that the solenoid valve spare coil VC2 that stops in emergency is in abnormal operating state.
The above-described extinction current for stopping in emergency solenoid valve spare coil VC2 is to refer to ensure to stop in emergency Solenoid valve flows through the minimum current for the solenoid valve spare coil VC2 that stops in emergency when working normally.
The above-described maximum allowed current for stopping in emergency solenoid valve spare coil VC2 is to refer to ensure to stop in emergency When solenoid valve works normally, the maximum operating currenbt that will not burn out the solenoid valve spare coil VC2 that stops in emergency is flowed through.
The above-described extinction current for stopping in emergency solenoid valve spare coil VC2 is to refer to ensure to stop in emergency Solenoid valve works normally the minimum current for flowing through the solenoid valve spare coil VC2 that stops in emergency.
Above-described diode D1, D2, D3, D4, D5, D6, D7, D8 and D9 are switching diode, and diode D2, D3, D5, D6, D8 and D9 select transwitch diode, and diode D1, D4 and D7 select transwitch diode or germanium switch two Pole pipe.
Above-described first switch pipe 100 is N-type metal-oxide-semiconductor or NPN type triode, and N-type metal-oxide-semiconductor enhances for N-channel Type metal-oxide-semiconductor, NPN type triode are NPN type switching transistor.When first switch pipe 100 is N-type metal-oxide-semiconductor, the grid of N-type metal-oxide-semiconductor Pole (G) is the control terminal of first switch pipe 100, and the drain electrode (D) of N-type metal-oxide-semiconductor is the hot end of first switch pipe 100, N-type The source electrode (S) of metal-oxide-semiconductor is the cold end of first switch pipe 100；When first switch pipe 100 is NPN type triode, NPN type The base stage of triode is the control terminal of first switch pipe 100, and the height of the current collection extremely first switch pipe 100 of NPN type triode is electric Position end, the cold end of the transmitting extremely first switch pipe 100 of NPN type triode.
Above-described second switch pipe 200 is N-type metal-oxide-semiconductor or NPN type triode, and N-type metal-oxide-semiconductor enhances for N-channel Type metal-oxide-semiconductor, NPN type triode are NPN type switching transistor；When second switch pipe 200 is N-type metal-oxide-semiconductor, the grid of N-type metal-oxide-semiconductor Pole (G) is the control terminal of second switch pipe 200, and the drain electrode (D) of N-type metal-oxide-semiconductor is the hot end of second switch pipe 200, N-type The source electrode (S) of metal-oxide-semiconductor is the cold end of second switch pipe 200；When second switch pipe 200 is NPN type triode, NPN type The base stage of triode is the control terminal of second switch pipe 200, and the height of the current collection extremely second switch pipe 200 of NPN type triode is electric Position end, the cold end of the transmitting extremely second switch pipe 200 of NPN type triode.Preferably second switch pipe 200 of the invention is N Type metal-oxide-semiconductor.
When first switch pipe 100 is N-type metal-oxide-semiconductor, during the switch of the 3rd switch module K3 is in disconnection, use simultaneously Shorting stub is by the 4th voltage-type relay normally open contact KV42 short circuits and the collection by illuminated triode in the first photoelectrical coupler U1 Electrode and emitter short circuit adjust gate-source voltage by resistance R1 and resistance R2, first switch pipe 100 are made to turn on saturation, adjust The resistance value of fixed resistance R1 and resistance R2 after good, and remove the shorting stub and first of the 4th voltage-type relay normally open contact KV43 The shorting stub of the collector of illuminated triode and transmitting interpolar in photoelectrical coupler U1；When first switch pipe 100 is three pole of NPN type Guan Shi, during the switch of the 3rd switch module K3 is in disconnection, similarly：The 4th voltage-type relay normally open is touched with shorting stub Point KV42 short circuits and by the collector of illuminated triode in the first photoelectrical coupler U1 and emitter short circuit, and pass through resistance R1 and Resistance R2 adjusts base current, and switching tube 100 is made to turn on saturation, mixes up the resistance value of rear fixed resistance R1 and resistance R2, removes the The collector and hair of illuminated triode in the shorting stub of four voltage-type relay normally open contact KV43 and the first photoelectrical coupler U1 Shorting stub between emitter-base bandgap grading.
It is connected when the switch of the 3rd switch module K3 is in, that is, during stopping in emergency：Diode D1 anodes to alarm power supply The cathode current potential of DC3 is clamped at below 0.7V or so, so as to the diode D2 that anode connects with diode D1 anodes, anode Current potential to alarm power supply DC3 cathode is equal to diode D1 anodes to the current potential that is clamped of power supply DC3 cathode, i.e. diode of alarming The current potential of D2 anodes to alarm power supply DC3 cathode is clamped at below 0.7V or so, therefore the positive diode D2 along string and two poles Pipe D3 is obstructed, and no conductivity control signal is sent to the control terminal of first switch pipe 100, and first switch pipe 100 ends, at this time：Without Whether connection by the 4th voltage-type relay normally open contact KV42, the 5th equal no powers of voltage-type relay coil KV51, the 5th The contact of voltage-type relay is in static state；(2) no matter whether illuminated triode turns in the first photoelectrical coupler U1, the 6th therefore Barrier indicator light MIL6 is to extinguish.
Connected when the switch of the 3rd switch module K3 is in, i.e., during stop in emergency, no matter the 4th voltage-type relay Whether normally opened contact KV42 is connected, the 5th equal no powers of voltage-type relay coil KV51, the contact of the 5th voltage-type relay In static state.
Connected when the switch of the 3rd switch module K3 is in, i.e., during stop in emergency, no matter the first photoelectrical coupler U1 Whether middle illuminated triode turns on, and the 6th malfunction indicator lamp MIL6 is to extinguish.
It is disconnected when the switch of the 3rd switch module K3 is in, i.e., during non-emergent parking, if the 4th voltage-type relay Normally opened contact KV42, which is in, to be connected, then the 5th voltage-type relay coil KV51 is powered, at the contact of the 5th voltage-type relay In dynamic.
It is disconnected when the switch of the 3rd switch module K3 is in, i.e., during non-emergent parking, if the 4th voltage-type relay Normally opened contact KV42, which is in, to be disconnected, then the 5th voltage-type relay coil KV51 no powers, the contact of the 5th voltage-type relay In static state.
It is disconnected when the switch of the 3rd switch module K3 is in, i.e., during non-emergent parking, if the first photoelectrical coupler U1 Middle illuminated triode conducting, then the 6th malfunction indicator lamp MIL6 is lighted.
It is disconnected when the switch of the 3rd switch module K3 is in, i.e., during non-emergent parking, if the first photoelectrical coupler U1 Middle illuminated triode cut-off, then the 6th malfunction indicator lamp MIL6 extinguishings.
It is connected when the 4th voltage-type relay normally open contact KV42 is in, then the 5th malfunction indicator lamp MIL5 is lighted.
It is disconnected when the 4th voltage-type relay normally open contact KV42 is in, then the 5th malfunction indicator lamp MIL5 extinguishes.
When first switch module K1 switch be in disconnect, then the 4th voltage-type relay coil KV41 no currents by, 4th voltage-type relay does not work, and the contact of the 4th voltage-type relay is in static state.
When first switch module K1 switch be in connect, then the 4th voltage-type relay coil KV41 have electric current by, 4th voltage-type relay works, and the contact of the 4th voltage-type relay is in dynamic.
When the 3rd switch module K3 switch be in disconnect, i.e., during non-emergent parking, no matter the second photoelectrical coupler Whether illuminated triode turns in U2, the 4th malfunction indicator lamp MIL4 is to extinguish.
It is connected when the switch of the 3rd switch module K3 is in, i.e., during stopping in emergency, if in the second photoelectrical coupler U2 Illuminated triode turns on, then the 4th malfunction indicator lamp MIL4 is lighted.
It is connected when the switch of the 3rd switch module K3 is in, i.e., during stopping in emergency, if in the second photoelectrical coupler U2 Illuminated triode ends, then the 4th malfunction indicator lamp MIL4 extinguishes.
During tertiary voltage type relay coil KV31 is in and is powered, i.e., the contact of tertiary voltage type relay is in dynamic State：Tertiary voltage type relay normally closed contact KV33 is disconnected, and physical break stops in emergency major loop, makes the major loop electricity that stops in emergency Stream is zero, and to stopping in emergency, major loop is protected；Tertiary voltage type relay normally open contact KV32 is connected, and lights the second failure Indicator light MIL2 prompts user's major loop that stops in emergency to be protected by physical break, and illustrate to stop in emergency major loop overcurrent or/and the The switch failure short circuit of one switch module.
When tertiary voltage type relay coil KV31 is in non-power status, i.e. the contact of tertiary voltage type relay is in It is static：Tertiary voltage type relay normally closed contact KV33 is connected, and connects the major loop that stops in emergency；Tertiary voltage type relay normally open Contact KV32 is disconnected, and the second malfunction indicator lamp MIL2 extinguishes.
During the switch of the 3rd switch module K3 disconnects, i.e., during non-emergent parking：If first switch module K1's opens Failure short circuit, the work of the 4th voltage-type relay are closed, the 4th voltage-type relay normally open contact KV42 is connected：(1) the 5th voltage-type Relay coil KV51 is powered, and the contact of the 5th voltage-type relay enters dynamic, the 5th voltage-type relay normally open contact KV52 is connected, and control letter is generated to the switch failure fault control circuit of stop in emergency major loop overcurrent and first switch module Number：1. if energization latching member can in the switch failure fault control circuit of stop in emergency major loop overcurrent and first switch module Control silicon SCR is in triggering and conducting self-locking state, then controllable silicon SCR is kept to turn on self-locking, that is, keeps tertiary voltage type relay line Circle KV31 continues to be powered through controllable silicon SCR, and the contact of tertiary voltage type relay is kept in dynamic；If it is led back 2. stopping in emergency It passes by energization latching member controllable silicon SCR in the switch failure fault control circuit of stream and first switch module and is in cut-off shape State then keeps controllable silicon SCR to end, and passes through tertiary voltage type relay coil KV31 and is powered by diode D8, D9 branch, the It, into dynamic, is treated that the contact of the 5th voltage-type relay reverts to static state by static state, that is, treats the in the contact of three voltage-type relays When five voltage-type relay normally open contact KV52 are disconnected, diode D8, D9 branch stop to tertiary voltage type relay coil KV31 is powered, and the contact of tertiary voltage type relay reverts to static state；(2) the 5th malfunction indicator lamp MIL5 is lighted, and prompts user the The switch failure short circuit of one switch module K1.
During the switch of the 3rd switch module K3 disconnects, i.e., during non-emergent parking：If first switch module K1's opens Shut-off is opened, and the 4th voltage-type relay does not work, and the 4th voltage-type relay normally open contact KV42 is disconnected：5th voltage-type after Electric apparatus coil KV51 no powers, the contact of the 5th voltage-type relay are in static state, the 5th voltage-type relay normally open contact KV52 is disconnected, and does not generate control letter to the switch failure fault control circuit of stop in emergency major loop overcurrent and first switch module Number；(2) the 5th malfunction indicator lamp MIL5 extinguishes, and illustrates that the switch of first switch module K1 during non-emergent parking is in and disconnects.
During the switch connection of the 3rd switch module K3, that is, during stopping in emergency：If the switch of first switch module K1 Failure open circuit, the 4th voltage-type relay do not work, and the 4th voltage-type relay normally open contact KV42 is disconnected：5th indicating fault Lamp MIL5 extinguishes, and prompts the switch failure open circuit of user's first switch module K1.
During the switch connection of the 3rd switch module K3, that is, during stopping in emergency：If the switch of first switch module K1 It connects, the 4th voltage-type relay work, the 4th voltage-type relay normally open contact KV42 is connected：5th malfunction indicator lamp MIL5 It lights, the switch of first switch module K1, which is in, during illustrating to stop in emergency connects.
During the switch connection of the 3rd switch module K3, that is, during stopping in emergency：5th voltage-type relay is not responding to The switch connection signal of first switch module K1, i.e. the 5th voltage-type relay coil KV51 no powers, the 5th voltage-type relay The contact of device is in static state, and the 5th voltage-type relay normally open contact KV52 is disconnected, not to major loop overcurrent and the of stopping in emergency The switch failure fault control circuit of one switch module generates control signal.
When the second current relay coil KI21 detects that the electric current flowed through is more than its rated current, the second current mode Relay normally open contact KI22 is connected, and the switch failure fault control of stop in emergency major loop overcurrent and first switch module is returned Road generates control signal, i.e., forms trigger circuit to stop in emergency major loop overcurrent and first switch module by resistance R8 and R9 Energization latching member controllable silicon SCR generates trigger signal in switch failure fault control circuit：(1) if controllable silicon SCR is on State then keeps controllable silicon SCR to turn on, and tertiary voltage type relay coil KV31 holdings are powered through controllable silicon SCR, but the present invention The fact that middle, is not present, because when controllable silicon SCR is in the conduction state, tertiary voltage type relay coil KV31 is powered, the Three voltage-type relay normally closed contact KV33 are disconnected, and to stopping in emergency, major loop has carried out physical break protection, master of stopping in emergency Loop current is zero；(2) if controllable silicon SCR is in cut-off state, and the 5th voltage-type relay normally open contact KV52 is in and disconnects When, triggering controllable silicon SCR conducting, tertiary voltage type relay coil KV31 is powered through controllable silicon SCR；(3) if at controllable silicon SCR In cut-off state, and the 5th voltage-type relay normally open contact KV52 is in and connects, but such case is also not present in the present invention, Because the present invention the 5th voltage-type relay normally open contact KV52 be in connect when, no matter controllable silicon SCR whether admittance, the 3rd Voltage-type relay coil KV31 is powered, and tertiary voltage type relay coil KV31 is powered, and tertiary voltage type relay is normal Closed contact KV33 is disconnected, and to stopping in emergency, major loop has carried out physical break protection, and the main circuit current that stops in emergency is zero；Certainly In the present invention：During non-emergent parking, the 5th voltage-type relay normally open contact KV52 is possible to connect.
For second switch pipe 200, when the switch of second switch module K2, which is in, to be connected, no matter second voltage type relay Whether device normally opened contact KV22 is disconnected and whether the solenoid valve spare coil VC2 that no matter stops in emergency is breaking, without conducting Control signal is sent to the control terminal of second switch pipe 200, and second switch pipe 200 ends.
For second switch pipe 200, disconnected when the switch of second switch module K2 is in, i.e., diode D4 branches are obstructed： (1) disconnected if second voltage type relay normally open contact KV22 is in, the solenoid valve spare coil VC2 that stops in emergency is in non-open circuit During state, the control terminal of second switch pipe 200 is from parking power supply DC1 or stand-by power supply DC2 through the solenoid valve siding that stops in emergency The access for enclosing VC2, resistance R3, diode D5, diode D6 and resistance R4 obtains its conductivity control signal, second switch pipe 200 Turn on saturation；(2) disconnected if second voltage type relay normally open contact KV22 is in, at the solenoid valve spare coil VC2 that stops in emergency When off state, parking power supply DC1 and stand-by power supply DC2 can not through the solenoid valve spare coil VC2 that stops in emergency, resistance R3, The composition access of diode D5, diode D6 and resistance R4, the control terminal of second switch pipe 200 do not obtain its conducting control letter Number, second switch pipe 200 ends；(3) if second voltage type relay normally open contact KV22 is in connection, no matter stop in emergency Whether in open circuit, the control terminal of second switch pipe 200 does not obtain its conductivity control signal to solenoid valve spare coil VC2, Second switch pipe 200 ends.In fact in the present invention, when the switch of second switch module K2, which is in, to be disconnected, second voltage type Relay normally open contact KV22 is in situation about connecting and is not present, because whether second voltage type relay is powered by second switch The switch on and off control of module K2, disconnects, second voltage type relay certainly will not if the switch of second switch module K2 is in It being powered, i.e. second voltage type relay coil KV21 will not be powered certainly, then the contact of second voltage type relay is in static state, Second voltage type relay normally open contact KV22, which is in, to be disconnected, and second voltage type relay normally open contact KV23, which is in, to be disconnected.
For the first photoelectrical coupler U1：When second switch pipe 200 ends, then light-emitting diodes in the first photoelectrical coupler U1 Pipe does not shine, the phototriode cut-off of light in the first photoelectrical coupler U1；When second switch pipe 200 turns on saturation, then the Lumination of light emitting diode in one photoelectrical coupler U1, the phototriode conducting saturation of light in the first photoelectrical coupler U1.
During the switch of the 3rd switch module K3 disconnects, i.e., during non-emergent parking：(1) as the first photoelectrical coupler U1 The phototriode of middle light turns on saturation, then the 6th malfunction indicator lamp MIL6 is lighted；When light in the first photoelectrical coupler U1 Phototriode cut-off, then the 6th malfunction indicator lamp MIL6 extinguish.
During the switch connection of the 3rd switch module K3, that is, during stopping in emergency：First switch pipe 100 ends no matter In first photoelectrical coupler U1 whether the phototriode conducting of light, the 6th malfunction indicator lamp MIL6 is to extinguish.
6th malfunction indicator lamp MIL6 carries for the alarm whether back-up circuit fails of stopping in emergency during non-emergent parking Show, i.e., opened for whether the solenoid valve spare coil VC2 that stops in emergency during non-emergent parking to be breaking and second switch module K2 The alarm whether to fail is closed, during non-emergent parking：If the 6th malfunction indicator lamp MIL6 is lighted, user is prompted promptly to stop The non-open circuits of vehicle solenoid valve spare coil VC2, and the switch of second switch module K2 disconnects, at this time at Fisrt fault indicator light MIL1 In extinguishing；If the 6th malfunction indicator lamp MIL6 extinguishes, user is prompted to stop in emergency solenoid valve spare coil VC2 open circuits or/and the The switch failure short circuit of two switch module K2：(1) extinguish if Fisrt fault indicator light MIL1 is in, illustrate the solenoid valve that stops in emergency Spare coil VC2 open circuits；(2), if Fisrt fault indicator light MIL1 is in and lights, illustrate that the switch failure of second switch module K2 is short Road, it is also possible to there is solenoid valve spare coil VC2 open circuits of stopping in emergency.During stopping in emergency, the 6th malfunction indicator lamp MIL6 In extinguishing.
Fisrt fault indicator light MIL1 described above is in stop in emergency major loop undercurrent and undercurrent switching control circuit Second switch module K2 switch failure short circuits alarm is prompted.During stopping in emergency, i.e. the 3rd switch module K3 switch connections Period：(1) whether no matter second voltage type relay normally open contact KV23 is connected, treat that the first current relay coil KI11 is examined When measuring extinction current of the electric current less than anxious electromagnetic valve for braking main coil VC1, the first current relay normally-closed contact KI13 is connected, and Fisrt fault indicator light MIL1 is lighted, if the second malfunction indicator lamp MIL2 is in extinguishing at this time, lights Fisrt fault The indicator light MIL1 major loops that stop in emergency during illustrating to stop in emergency do not carry out undercurrent prompting in the case of physical break protection, Otherwise undercurrent prompting i.e. under the non-disconnections of tertiary voltage type relay normally closed contact KV33, lights Fisrt fault instruction The lamp MIL1 major loops that stop in emergency during illustrating to stop in emergency carry out undercurrent prompting in the case of physical break protection, i.e., the Undercurrent prompting under three voltage-type relay normally closed contact KV33 disconnections；(2) Fisrt fault indicator light MIL1 extinguishes, explanation The electric current of major loop of stopping in emergency during stopping in emergency is more than or equal to the extinction current of anxious electromagnetic valve for braking main coil VC1. During non-emergent parking, i.e. during the 3rd switch module K3 switches disconnect：Due to the major loop that stops in emergency during stopping in emergency There is physical break protection, whether no matter first switch module K1 switches disconnect, the electric current for flowing through the major loop that stops in emergency is zero, First current relay normally-closed contact KI12 is connected, and the first current relay normally-closed contact KI13 is connected：(1) when the first electricity Flow pattern relay normally closed contact KI12 is connected, and second switch module K2 switch connections, then second voltage type relay coil KV21 is powered, and the contact of second voltage type relay enters dynamic, and second voltage type relay normally open contact KV22 is connected, and second Voltage-type relay normally open contact KV23 is connected：Second voltage type relay normally open contact KV22 is connected, standby by stopping in emergency Mistakenly stop vehicle is carried out with circuit；(2) the first current relay normally-closed contact KI13 connections and second voltage type relay normally open Contact KV23 lights Fisrt fault indicator light MIL1, prompts the short circuit of user second switch module K2 switch failures.
When the first current relay normally-closed contact KI12 be in disconnect, no matter second switch module K2 switch disconnect with No, the equal no powers of second voltage type relay coil KV21, the contact of second voltage type relay is in static state, i.e. second voltage Type relay normally open contact KV22 is disconnected, and second voltage type relay normally open contact KV23 is disconnected.
When the first current relay normally-closed contact KI12 connects the switch connection with second switch module K2, the second electricity Die mould relay coil KV21 is powered, and the contact of second voltage type relay is in dynamic, i.e. second voltage type relay normally open Contact KV22 is connected, and second voltage type relay normally open contact KV23 is connected.
The back-up circuit that the stops in emergency for use phase during stopping in emergency, i.e., in period the first current mode relay of stopping in emergency Device normally-closed contact KI12, which is in, to be disconnected, if the switch of second switch module K2 is in connection and the solenoid valve spare coil that stops in emergency VC2 is in non-off state (regarding as intact)：Diode D4 is turned on, and second switch pipe 200 ends, and stop power supply DC1 or standby With power supply DC2 by the solenoid valve spare coil VC2 that the stops in emergency branches formed through resistance R3 and diode D4 and resistance R7 and The switch of branch to second switch module K2 that light emitting diode is formed form power circuit, this hair in second photoelectrical coupler U2 It is bright the selection of the resistance value of resistance R3 and resistance R7 is met at this time it is claimed below：The sum of electric current of resistance R3 and resistance R7 is flowed through tight / 3rd to three/5ths of the extinction current of the solenoid valve spare coil VC2 that stops in emergency of anxious electromagnetic valve for braking requirement Between, and including 3/5ths and 1/3rd, and the electric current for flowing through resistance R7 meets luminous two in the second photoelectrical coupler U2 Pole tube light-emitting makes the phototriode of its light turn on the requirement of saturation.So as to fulfill：It stops in emergency during stopping in emergency standby It is in circuit and treats the used time, solenoid valve spare coil VC2 is powered in advance to stopping in emergency in the back-up circuit that stops in emergency, and flows through the The electric current of light emitting diode meets its luminous phototriode conducting saturation for making light in two photoelectrical coupler U2；It is to be cut to change to The back-up circuit that stops in emergency stops in emergency, that is, treats that the first current relay normally-closed contact KI12 is connected：Second voltage type Relay coil KV21 is powered, and second voltage type relay normally open contact KV22 is connected, and makes the solenoid valve spare coil that stops in emergency VC2 rapidly enters normal through-flow that the valve of control is closed, stopped in emergency by magnetic, solenoid valve quick acting of stopping in emergency； Because second voltage type relay normally open contact KV22 is connected, by the resistance R3 and diode D4 branches formed and resistance R7 and second The switch of the branch that light emitting diode is formed in photoelectrical coupler U2 to second switch module K2 form energization access short circuit, resistance The branch no current that light emitting diode is formed in R7 and the second photoelectrical coupler U2 passes through light in the second photoelectrical coupler U2 Phototriode ends.
It is disconnected when the switch of second switch module K2 is in connect to be in second voltage type relay normally open contact KV22 When, if the solenoid valve spare coil VC2 that stops in emergency is in open circuit, light emitting diode in resistance R7 and the second photoelectrical coupler U2 The branch no current of composition by, in the second photoelectrical coupler U2 light phototriode cut-off, otherwise, resistance R7 and second The branch that light emitting diode is formed in photoelectrical coupler U2 has electric current to pass through lumination of light emitting diode in the second photoelectrical coupler U2 The phototriode of its light is made to turn on saturation.
It is disconnected when the switch of second switch module K2 is in, whether the solenoid valve spare coil VC2 that no matter stops in emergency is in Whether non-off state and second voltage type relay normally open contact KV22 disconnect, resistance R7 and the second photoelectrical coupler U2 The equal no current of branch that middle light emitting diode is formed is by the way that the phototriode of light is in i.e. the second photoelectrical coupler U2 Cut-off.
It is disconnected when the switch of second switch module K2 is in, i.e., diode D4 branches are obstructed, and the solenoid valve that stops in emergency is standby When being in non-off state (regarding as intact) with coil VC2, by selecting the resistance value of resistance R4 and R5, make parking power supply DC1 Or stand-by power supply DC2 by the solenoid valve spare coil VC2 that stops in emergency through resistance R3, diode D5, diode D6 and resistance R4 It send to the conductivity control signal of 200 control terminal of second switch pipe and meets the conducting saturation requirement of switching tube 200.
The switch failure fault control circuit of above-described stop in emergency major loop overcurrent and first switch module：For During major loop overcurrent of stopping in emergency and non-emergent parking during the switch failure short circuit of first switch module, led back to stopping in emergency Road carries out physical break protection, and passes through major loop overcurrent and the first switch Module Fail alarm circuit progress second of stopping in emergency Malfunction indicator lamp MIL2 alarms, and the physical break for major loop overcurrent of stopping in emergency is remained to and waits to remove parking electricity (releasing) is terminated during source DC1 and stand-by power supply DC2, otherwise, the physical break protection for major loop overcurrent of stopping in emergency is protected always It holds during stop in emergency period and the non-emergent parking after diesel engine, that is, is always held at the later entire execution of diesel engine In the process；And terminate (solution when stopping in emergency to the physical break protection of the switch failure short circuit of first switch module is pending Except).When the switch failure fault control signal of first switch module is received between non-emergent dwelling period, led back to stopping in emergency Road carries out physical break protection, solves the problems, such as to miss emergency stop vehicle caused by the switch failure short circuit of first switch module.For It is pending to stop in emergency because the switch failure short circuit of first switch module carries out the major loop that stops in emergency the protection of physical break When terminate (releasing), be conducive to mainly stop in emergency using the major loop that stops in emergency；And for because of the major loop that stops in emergency The physical break protection that overcurrent carries out it terminates (releasing) when removing parking power supply DC1 and stand-by power supply DC2, otherwise, It is always held in the later entire implementation procedure of diesel engine.
The switch failure fault control circuit of major loop overcurrent of stopping in emergency and first switch module receives overcurrent or The switch failure fault control signal of one switch module, tertiary voltage type relay, which enters, to be powered/remains powered on, tertiary voltage type The contact of relay enters operating state/holding operating state.
When above-described second malfunction indicator lamp MIL2 is for carrying out the major loop that stops in emergency physical break protection Alarm, the i.e. contact of tertiary voltage type relay are in alarm during operating state, the second indicating fault lighted Lamp MIL2, the switch failure short circuit of illustrate to stop in emergency major loop overcurrent or/and first switch module：
1. when the second malfunction indicator lamp MIL2 diesel engine stop in emergency during light, illustrate major loop overcurrent of stopping in emergency；
2. when the 5th malfunction indicator lamp MIL5 is OFF state, then, the second failure lighted during the non-emergent parking of diesel engine Indicator light MIL2 illustrates major loop overcurrent of stopping in emergency；
3. when the second malfunction indicator lamp MIL2 is lit during the non-emergent parking of diesel engine by extinguishing, illustrate first switch module The switch failure short circuit of K1, and the major loop that stops in emergency is it is possible that go back overcurrent；
4. when the second malfunction indicator lamp MIL2 is remain on during the non-emergent parking of diesel engine, and the 5th malfunction indicator lamp MIL5 It is lit by extinguishing, then in the second malfunction indicator lamp MIL2 lighted, illustrates stop in emergency major loop overcurrent and first switch The switch failure short circuit of module.
Above-described 5th malfunction indicator lamp MIL5 fails for first switch module switch in the major loop that stops in emergency Alarm.During the non-emergent parking of diesel engine：If the 5th malfunction indicator lamp MIL5 is lighted, illustrate that first switch module is opened Close failure short circuit；If the 5th malfunction indicator lamp MIL5 extinguishes, illustrate that first switch module switch disconnects.It stops in emergency in diesel engine Period：If the 5th malfunction indicator lamp MIL5 is lighted, illustrate that first switch module switch is connected；If the 5th malfunction indicator lamp MIL5 is put out It goes out, illustrates first switch module switch failure open circuit.When the 5th malfunction indicator lamp MIL5 is during the non-emergent parking of diesel engine Extinguish, and be lit during diesel engine stops in emergency, illustrate that the switch of first switch module is normal, i.e. fault-free.
Above-described 3rd malfunction indicator lamp MIL3 is prompted when failing for the power supply DC1 that stops, when parking power supply the 3rd When malfunction indicator lamp MIL3 is lighted, the power supply DC1 output voltages that illustrate to stop are less than first voltage type relay coil KV11 maintenances Voltage or equal to zero, here when parking power supply DC1 output voltages less than first voltage type relay coil KV11 maintenance voltages or Parking power supply DC1 failures (or halting vehicle power supply DC1 dead electricity or decompression) are regarded as during equal to zero.
Above-described 4th malfunction indicator lamp MIL4 is used to stop in emergency spare time in for use during stopping in emergency The alarm whether road fails is in for the back-up circuit that stops in emergency during stopping in emergency and treats that the used time stops in emergency electromagnetism The alarm whether breaking and second switch module K2 the switches of valve spare coil VC2 fail.During stopping in emergency The back-up circuit that stops in emergency is in and treats the used time：If the 4th malfunction indicator lamp MIL4 is lighted, prompt user's solenoid valve that stops in emergency standby With the non-open circuits of coil VC2, and the switch connection of second switch module K2；If the 4th malfunction indicator lamp MIL4 extinguishes, user is prompted Stop in emergency solenoid valve spare coil VC2 open circuits or/and the switch failure open circuit of second switch module K2.In non-emergent dwelling period Between, the 4th malfunction indicator lamp MIL4 is extinguishing.When enabling the back-up circuit that stops in emergency during stop in emergency and being stopped in emergency, 4th malfunction indicator lamp MIL4 is extinguishing.
The rated voltage of first voltage type relay coil KV11 described above is more than the rated voltage of parking power supply DC1, Be conducive to the rated voltage for making first voltage type relay coil KV11 maintenance voltages close to parking power supply DC1, but ensure again The contact of first voltage type relay normally becomes dynamic from static, and the present invention selects first voltage type relay coil KV11's Rated voltage is equal to the 106% of the rated voltage of parking power supply DC1.
Above-described first voltage type relay two-way contact KV12, second voltage type relay normally open contact KV22, And the maximum current that tertiary voltage type relay normally closed contact KV33 is allowed to flow through is all higher than or equal to the volume for stopping power supply DC1 Constant current.
The present invention assert that the output for the power supply DC1 that stops during the contact actuation (action) that can guarantee first voltage type relay is Normal output.
Above-described diesel engine stop in emergency circuit parking power supply DC1 and stand-by power supply DC2 handoff procedures it is as follows：
1) when power supply DC1 outputs of stopping are normal, first voltage type relay coil KV11 obtains electric, first voltage type relay Contact action：
(1) the common port of first voltage type relay two-way contact KV12 and normally open end are connected, and parking power supply DC1 is to parking circuit Power supply；
(2) first voltage type relay normally closed contact KV13 is disconnected, and the 3rd malfunction indicator lamp MIL3 extinguishes；
2) when the power supply DC1 that stops fails, first voltage type relay coil KV11 dead electricity, the contact of first voltage type relay Revert to static state：
(1) the common port of first voltage type relay two-way contact KV12 and normal-closed end are connected, be switched to stand-by power supply (DC2) to Stop loop power supply；
(2) first voltage type relay normally closed contact KV13 is connected, and the 3rd malfunction indicator lamp MIL3 is lighted, and user is prompted to stop electric Source DC1 fails；
3) stand-by power supply DC2 to parking loop power supply during, wait stop power supply DC1 output revert to normal when, first voltage Type relay coil KV11 obtains electric, the contact action of first voltage type relay：
(1) the common port of first voltage type relay two-way contact KV12 is connected with normally open end, recovers parking power supply DC1 to parking Loop power supply；
(2) first voltage type relay normally closed contact KV13 is disconnected, and the 3rd malfunction indicator lamp MIL3 lighted extinguishes.

Claims (10)

  1. The circuit 1. a kind of diesel engine stops in emergency, including parking power supply (DC1), stand-by power supply (DC2), alarm power supply (DC3), the One voltage-type relay, second voltage type relay, tertiary voltage type relay, the 4th voltage-type relay, the 5th voltage-type Relay, the first current relay, the second current relay, the solenoid valve that stops in emergency, Fisrt fault indicator light (MIL1), Second malfunction indicator lamp (MIL2), the 3rd malfunction indicator lamp (MIL3), the 4th malfunction indicator lamp (MIL4), the 5th malfunction indicator lamp (MIL5), the 6th malfunction indicator lamp (MIL6), first switch module (K1), second switch module (K2), the 3rd switch module (K3), first switch pipe (100), second switch pipe (200), diode D1, diode D2, diode D3, diode D4, two poles Pipe D5, diode D6, diode D7, diode D8, diode D9, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, It is resistance R6, resistance R7, resistance R8, resistance R9, the first photoelectrical coupler (U1), the second photoelectrical coupler (U2), silicon-controlled (SCR)；It is characterized in that, the solenoid valve that stops in emergency stops in emergency solenoid valve for twin coil, that is, stop in emergency solenoid valve Coil is by stopping in emergency solenoid valve main coil (VC1) and the solenoid valve spare coil (VC2) that stops in emergency forms；The first voltage Type relay coil (KV11) directly (DC1) and connects with parking power supply, anode and the first voltage type relay of parking power supply (DC1) The normally open end of device two-way contact (KV12) is connected, anode and the first voltage type relay two-way contact of stand-by power supply (DC2) (KV12) normal-closed end is connected, and the cathode of stand-by power supply (DC2) is connected with the cathode of parking power supply (DC1)；Described is tight Anxious electromagnetic valve for braking main coil (VC1) anode concatenation tertiary voltage type relay normally closed contact (KV33), the second current mode after Electric apparatus coil (KI21), the first current relay coil (KI11) afterwards with first voltage type relay two-way contact (KV12) Common port is connected, with stopping after the switch of the cathode concatenation first switch module (K1) for the solenoid valve main coil (VC1) that stops in emergency The cathode of vehicle power supply (DC1) is connected, and first parking circuit is formed with parking power supply (DC1) or stand-by power supply (DC2), described The major loop that stops in emergency is in first parking circuit, that is, solenoid valve main coil circuit of stopping in emergency；The electromagnetism that stops in emergency The anode of valve spare coil (VC2) is connected with the common port of first voltage type relay two-way contact (KV12), stops in emergency Solenoid valve spare coil (VC2) cathode concatenation second voltage type relay normally open contact (KV22) afterwards with parking power supply (DC1) Cathode be connected, form Article 2 parking circuit, Article 2 parking with parking power supply (DC1) or stand-by power supply (DC2) The back-up circuit that stops in emergency is in circuit, that is, solenoid valve spare coil circuit of stopping in emergency；Second current relay normally opened contact (KI22) one end is connected with one end of resistance R8, the other end and the tertiary voltage type relay coil (KV31) of resistance R8 One end phase and the common port that first voltage type relay two-way contact (KV12) is accessed after connecing, tertiary voltage type relay coil (KV31) the other end is connected with the anode of silicon-controlled (SCR) and the anode of diode D8 is connected with each other, the moon of diode D8 Pole is connected with the anode of diode D9, and the cathode of diode D9 concatenates the 5th voltage-type relay normally open contact (KV52) and is followed by Enter the cathode of the power supply that stops (DC1), the control pole of silicon-controlled (SCR) is another with the second current relay normally opened contact (KI22) One end phase of one end and resistance R9 simultaneously connect, the cathode of silicon-controlled (SCR) and the other end phase of resistance R9 and access parking electricity after connecing The cathode in source (DC1) forms Article 3 parking circuit, the Article 3 parking with parking power supply (DC1) or stand-by power supply (DC2) Circuit is the switch failure fault control circuit of major loop overcurrent and first switch module of stopping in emergency；First current relay One end of normally-closed contact (KI12) is connected with the common port of first voltage type relay two-way contact (KV12), and the other end is successively Concatenate second voltage type relay coil (KV21), second switch module (K2) switch after access parking power supply (DC1) it is negative Pole forms Article 4 parking circuit with parking power supply (DC1) or stand-by power supply (DC2), and the Article 4 parking circuit is urgent The undercurrent switching control circuit of parking major loop；One end of 4th voltage-type relay coil (KV41) and first voltage type relay The common port of device two-way contact (KV12) is connected, and other end access is stopped in emergency the cathode and the of solenoid valve main coil (VC1) On the connecting line of one switch module (K1) switch, form Article 5 with parking power supply (DC1) or stand-by power supply (DC2) and stop back Road, Article 5 parking circuit are the switch on/off measure loop of first switch module in major loop of stopping in emergency；The electricity It hinders one end of R3 and one end of resistance R7 and the cathode and second voltage for the solenoid valve spare coil (VC2) that stops in emergency is accessed after connecing On the connecting line of type relay normally open contact (KV22), the other end of resistance R3 and the anode of diode D4 and the sun of diode D5 Extremely connected with each other, cathode access second voltage type relay coil (KV21) and the second switch module (K2) of diode D4 switch Connecting line on, the cathode of diode D5 is connected with the anode of diode D6, the cathode of diode D6 and one end of resistance R4 It is connected, the other end and the control terminal of second switch pipe (200) and one end of resistance R5 of resistance R4 is connected with each other, resistance R5's The cold end of the other end and second switch pipe (200) is connected with the cathode of parking power supply (DC1), second switch pipe (200) Hot end be connected with the cathode of light emitting diode in the first photoelectrical coupler (U1), hair in the first photoelectrical coupler (U1) It is connected after the anode series resistance R6 of optical diode with the common port of first voltage type relay two-way contact (KV12), resistance The other end of R7 is connected with the anode of light emitting diode in the second photoelectrical coupler (U2), hair in the second photoelectrical coupler (U2) On the connecting line that the cathode access second voltage type relay coil (KV21) of optical diode is switched with second switch module (K2), Article 6 parking circuit is formed with parking power supply (DC1) or stand-by power supply (DC2), the Article 6 parking circuit is to stop in emergency The circuit that back-up circuit failure detection and spare coil are powered in advance；First voltage type relay normally closed contact (KV13) concatenation the 3rd Malfunction indicator lamp (MIL3) (DC3) and connects afterwards with alarm power supply, and forming parking power-fail with alarm power supply (DC3) alarms back Road；Tertiary voltage type relay normally open contact (KV32) concatenates the second malfunction indicator lamp (MIL2) afterwards with alarming power supply (DC3) simultaneously It connects, forms alarm circuit when physical break protection is carried out to the major loop that stops in emergency with alarm power supply (DC3), that is, stop in emergency Alarm circuit during the switch failure short circuit of major loop overcurrent or/and first switch module；First current relay is normally closed to be touched Point (KI13) is concatenated with Fisrt fault indicator light (MIL1), and one end after concatenation is connected with the anode of alarm power supply (DC3), is gone here and there The other end and the anode of diode D7 and one end of second voltage type relay normally open contact (KV23) after connecing is connected with each other, and two The cathode of pole pipe D7 is connected after concatenating the switch of the 3rd switch module (K3) with the cathode of alarm power supply (DC3), second voltage The other end of type relay normally open contact (KV23) is connected with the cathode of alarm power supply (DC3), is formed with alarm power supply (DC3) Stop in emergency the alarm circuit of second switch module (K2) switch failure short circuit in major loop undercurrent and undercurrent switching control circuit； The collector of illuminated triode is connected with the anode of alarm power supply (DC3) in second photoelectrical coupler (U2), the second photoelectricity coupling The emitter of illuminated triode concatenates the cathode and that the 4th malfunction indicator lamp (MIL4) accesses diode D7 afterwards in clutch (U2) On the connecting line of three switch modules (K3) switch, promptly stop in for use during stopping in emergency with power supply (DC3) composition of alarming The alarm circuit whether vehicle back-up circuit fails；The cathode phase of the cold end of first switch pipe (100) and alarm power supply (DC3) Connection, the hot end of first switch pipe (100) be sequentially connected in series the 5th voltage-type relay coil (KV51), the 4th voltage-type after Electric appliance normally opened contact (KV42) accesses the anode of alarm power supply (DC3), one end of resistance R1 and the anode of alarm power supply (DC3) afterwards It is connected, the other end of resistance R1 and the anode of the anode of diode D1 and diode D2 are connected with each other, the cathode of diode D1 It accesses on the cathode of diode D7 and the connecting line of the 3rd switch module (K3) switch, the cathode of diode D2 is with diode D3's Anode is connected, and the cathode of diode D3 and the control terminal of one end of resistance R2 and first switch pipe (100) are connected with each other, resistance The other end of R2 is connected with the cathode of alarm power supply (DC3), is formed with alarm power supply (DC3) first in the major loop that stops in emergency The switch failure short-circuit detecting control loop of switch module；The 4th voltage-type relay is accessed in 5th malfunction indicator lamp (MIL5) one end Device normally opened contact (KV42) with alarm power supply (DC3) on the connecting line of the 5th voltage-type relay coil (KV51), forming tight The alarm circuit that first switch module switch fails in emergency stop car owner circuit；One end access the of 6th malfunction indicator lamp (MIL6) The hot end of one switching tube (100), in the other end of the 6th malfunction indicator lamp (MIL6) and the first photoelectrical coupler (U1) by The emitter of optical transistor is connected, the collector of illuminated triode and alarm power supply (DC3) in the first photoelectrical coupler (U1) Anode be connected, the alarm whether back-up circuit fails of stopping in emergency during forming non-emergent parking with alarm power supply (DC3) Circuit；The control terminal of the first switch module (K1), the control terminal of second switch module (K2) and the 3rd switch module (K3) Control terminal it is connected with each other after be connected with the output of diesel engine main control module；The first switch pipe (100) is N-type metal-oxide-semiconductor, Or the first switch pipe (100) is NPN type triode；The second switch pipe (200) is opened for N-type metal-oxide-semiconductor or described second It is NPN type triode to close pipe (200).
  2. The circuit 2. a kind of diesel engine according to claim 1 stops in emergency, which is characterized in that the electromagnetism that stops in emergency Valve stops in emergency solenoid valve for twin coil, that is, the coil for the solenoid valve that stops in emergency is made of spare two groups of coils of advocating peace, two groups of lines Any of which group coil is powered in circle or two groups of coils are powered simultaneously, and the solenoid valve that stops in emergency obtains magnetic action and closes the disconnected of its control The valve of gas or oil-break realizes that diesel engine stops in emergency；When two groups of coils are power failure state, the solenoid valve that stops in emergency, which is in, to be lost Magnetic state, solenoid valve control of stopping in emergency die or the valve of oil-break be in open；Stop in emergency two groups of coils of solenoid valve In one group be set as the solenoid valve main coil (VC1) that stops in emergency, another group is set as the solenoid valve spare coil that stops in emergency (VC2)。
  3. The circuit 3. a kind of diesel engine according to claim 1 stops in emergency, which is characterized in that the first current mode relay The rated current of device coil (KI11) is set equal to stop in emergency the extinction current of solenoid valve main coil (VC1)；Described The rated current of two current relay coils (KI21) is set equal to the maximum allowable of solenoid valve main coil (VC1) of stopping in emergency Electric current.
  4. The circuit 4. a kind of diesel engine according to claim 1 stops in emergency, which is characterized in that the first voltage type after Electric appliance two-way contact (KV12), second voltage type relay normally open contact (KV22) and tertiary voltage type relay are normally closed tactile The maximum current that point (KV33) allows to flow through is equal to or the rated current more than parking power supply (DC1).
  5. The circuit 5. a kind of diesel engine according to claim 3 stops in emergency, which is characterized in that the electromagnetism that stops in emergency The extinction current of valve main coil (VC1) refers to：Ensure to stop in emergency solenoid valve normal work and flow through the electromagnetism that stops in emergency The minimum current of valve main coil (VC1).
  6. The circuit 6. a kind of diesel engine according to claim 3 stops in emergency, which is characterized in that the electromagnetism that stops in emergency The maximum allowed current of valve main coil (VC1) refers to：Ensure solenoid valve normal work of stopping in emergency, and will not burn out and stop in emergency The maximum operating currenbt of solenoid valve main coil (VC1).
  7. The circuit 7. a kind of diesel engine according to claim 1 stops in emergency, which is characterized in that the first switch pipe (100) when and second switch pipe (200) is N-type metal-oxide-semiconductor, the grid of N-type metal-oxide-semiconductor is first switch pipe (100) and second switch Manage the control terminal of (200), the drain electrode of N-type metal-oxide-semiconductor is first switch pipe (100) and the hot end of second switch pipe (200), N The source electrode of type metal-oxide-semiconductor is first switch pipe (100) and the cold end of second switch pipe (200)；The first switch pipe (100) when and second switch pipe (200) is NPN type triode, the base stage of NPN type triode is first switch pipe (100) and the The control terminal of two switching tubes (200), current collection extremely the first switch pipe (100) and second switch pipe (200) of NPN type triode Hot end, the transmitting extremely cold end of first switch pipe (100) and second switch pipe (200) of NPN type triode.
  8. The circuit 8. a kind of diesel engine according to claim 1 stops in emergency, which is characterized in that the diode D1, D2, D3, D4, D5, D6, D7, D8 and D9 are switching diode；The N-type metal-oxide-semiconductor is the enhanced metal-oxide-semiconductor of N-channel；Described NPN type triode is NPN type switching transistor；Silicon-controlled (SCR) is the list that the pressure drop of itself is 1V or so after turning on It is mutually silicon-controlled.
  9. The implementation method of circuit 9. a kind of diesel engine according to claims 1 to 3 any bar stops in emergency, feature exist In comprising the following steps:
    First, stop power supply (DC1) and stand-by power supply (DC2) handoff procedure
    1) when stop power supply (DC1) export for it is normal when, first voltage type relay coil (KV11) it is electric, first voltage type after The contact action of electric appliance：
    (1) the common port of first voltage type relay two-way contact (KV12) and normally open end are connected, and parking power supply (DC1) is to parking Loop power supply,
    (2) first voltage type relay normally closed contact (KV13) disconnects, and the 3rd malfunction indicator lamp (MIL3) is extinguished；
    2) when the power supply (DC1) that stops fails, first voltage type relay coil (KV11) dead electricity, first voltage type relay Contact reverts to static state：
    (1) the common port of first voltage type relay two-way contact (KV12) is connected with normal-closed end, is switched to stand-by power supply (DC2) To parking loop power supply,
    (2) first voltage type relay normally closed contact (KV13) is connected, and the 3rd malfunction indicator lamp (MIL3) is lighted, and user is prompted to stop Vehicle power supply (DC1) fails；
    3) when in stand-by power supply (DC2) to during parking loop power supply, when power supply (DC1) output of stopping reverts to normal, the One voltage-type relay coil (KV11) obtains electric, the contact action of first voltage type relay：
    (1) the common port of first voltage type relay two-way contact (KV12) and normally open end are connected, recover parking power supply (DC1) to Stop loop power supply,
    (2) first voltage type relay normally closed contact (KV13) disconnects, and the 3rd malfunction indicator lamp (MIL3) lighted is extinguished；
    2nd, the process in control parking circuit
    1) the 3rd switch module (K3) is assert to be intact, and second switch module (K2) and first switch module (K1) quality are set to not Know：
    When diesel engine main control module is to first switch module (K1), second switch module (K2) and the 3rd switch module (K3) During sending emergency shut-down control device signal, that is, during stopping in emergency, the switch connection of the 3rd switch module (K3), first switch mould Whether the switch of block (K1) is connected with the switch of second switch module (K2) to be unknown,
    When diesel engine main control module is not to first switch module (K1), second switch module (K2) and the 3rd switch module (K3) during sending emergency shut-down control device signal, i.e., during non-emergent parking, the switch of the 3rd switch module (K3) disconnects, and first It is unknown whether the switch of switch module (K1) and the switch of second switch module (K2) are broken as；
    If 2) switch connection of first switch module (K1), the 4th voltage-type relay coil (KV41) is powered, the 4th voltage Type relay normally open contact (KV42) connect, otherwise, the 4th voltage-type relay coil (KV41) no power, the 4th voltage-type after Electric appliance normally opened contact (KV42) disconnects；
    3) treat tertiary voltage type relay power, that is, treat that the contact of tertiary voltage type relay enters dynamic：
    (1) tertiary voltage type relay normally closed contact (KV33) disconnects, and to stopping in emergency, major loop carries out physical break protection,
    (2) tertiary voltage type relay normally open contact (KV32) is connected, and lights the second malfunction indicator lamp (MIL2), prompts user tight The short circuit of the switch failure of emergency stop car owner circuit overcurrent or/and first switch module；
    4) treat that the detection of the second current relay recognizes and the solenoid valve that stops in emergency is more than by the electric current for the major loop that stops in emergency During main coil (VC1) maximum allowed current, the contact of the second current relay enters dynamic：
    (1) illustrate that tertiary voltage type relay coil (KV31) is in unpowered state, that is, stop in emergency major loop overcurrent and first Energization latching member silicon-controlled (SCR) is in cut-off and the 5th voltage in the switch failure fault control circuit of switch module Type relay normally open contact (KV52), which is in, to be disconnected,
    (2) the second current relay normally opened contact (KI22) is connected, to stop in emergency major loop overcurrent and first switch module Switch failure fault control circuit generates control signal, i.e., forms trigger circuit to major loop mistake of stopping in emergency by resistance R8 and R9 Energization latching member silicon-controlled (SCR) generates trigger signal in the switch failure fault control circuit of stream and first switch module, Silicon-controlled (SCR) conducting is triggered, tertiary voltage type relay coil KV31 is powered through silicon-controlled (SCR)；
    5) during the circuit that stops in emergency is in non-emergent parking：
    (1) first switch pipe (100) conducting saturation：
    If 1. the 6th malfunction indicator lamp (MIL6) is lighted, the switch of user's second switch module (K2) is prompted to be in and is disconnected and urgent Electromagnetic valve for braking spare coil (VC2) is in non-open circuit, if the 6th malfunction indicator lamp (MIL6) is extinguished, prompts user's second switch The switch failure short circuit of module (K2) or/and solenoid valve spare coil (VC2) open circuit of stopping in emergency,
    2. treating that the 4th voltage-type relay normally open contact (KV42) is connected, the 5th voltage-type relay coil (KV51) is powered, the Five voltage-type relay normally open contacts (KV52) are connected, to the switch failure of stop in emergency major loop overcurrent and first switch module Fault control circuit generates control signal：
    If latching member is powered in the switch failure fault control circuit of major loop overcurrent of a. stopping in emergency and first switch module Silicon-controlled (SCR) is in triggering and conducting self-locking state, then keep silicon-controlled (SCR) turn on self-locking, that is, keep tertiary voltage type after Electric apparatus coil (KV31) continues to be powered through silicon-controlled (SCR), and the contact of tertiary voltage type relay is kept in dynamic,
    If latching member is powered in the switch failure fault control circuit of major loop overcurrent of b. stopping in emergency and first switch module Silicon-controlled (SCR) is in cut-off state, then silicon-controlled (SCR) is kept to end, and passes through tertiary voltage type relay coil (KV31) It is powered by diode D8, D9 branch, the contact of tertiary voltage type relay enters dynamic, tertiary voltage type relay by static state Coil (KV31) by the energization of diode D8, D9 branch through being always maintained to the 5th voltage-type relay normally open contact (KV52) It disconnects, i.e., is always maintained at into the contact of dynamic tertiary voltage type relay to the 5th voltage-type relay normally open contact (KV52) static state is reverted to when,
    (2) treat that the 4th voltage-type relay normally open contact (KV42) is connected, light the 5th malfunction indicator lamp (MIL5), prompt user The switch failure short circuit of first switch module (K1),
    (3) treat that second voltage type relay normally open contact (KV23) is connected, light Fisrt fault indicator light (MIL1), prompt user The switch failure short circuit of second switch module (K2),
    (4) the 4th malfunction indicator lamp (MIL4) is extinguished；
    6) during the circuit that stops in emergency is in and stops in emergency：
    (1) first switch pipe (100) ends：
    1. the 5th voltage-type relay coil (KV51) no power, the contact of the 5th voltage-type relay is in static state, the 5th electricity Die mould relay normally open contact (KV52) disconnects, not short to the switch failure of stop in emergency major loop overcurrent and first switch module Road control loop generates control signal,
    2. the 6th malfunction indicator lamp (MIL6) is extinguished,
    If (2) Fisrt fault indicator light (MIL1) extinguishes, the back-up circuit that illustrates to stop in emergency is in for use period, if Fisrt fault Indicator light (MIL1) is lighted, and user is prompted to stop in emergency major loop undercurrent, and is enabled back-up circuit control of stopping in emergency and promptly stopped Vehicle,
    (3) during the back-up circuit that stops in emergency is in for use：
    If the 4th malfunction indicator lamp (MIL4) is lighted, the switch connection of user's second switch module (K2) and the electricity that stops in emergency are prompted Magnet valve spare coil (VC2) is in non-open circuit, if the 4th malfunction indicator lamp (MIL4) is extinguished, prompts user's second switch module (K2) switch failure open circuit or/and solenoid valve spare coil (VC2) open circuit of stopping in emergency,
    (4) during the back-up circuit that stops in emergency is enabled, the 4th malfunction indicator lamp (MIL4) is extinguished,
    (5) when the switch of second switch module (K2) is in connection and the solenoid valve spare coil (VC2) that stops in emergency is in non-open circuit State：
    1. during the back-up circuit that stops in emergency is in for use, the branch and resistance R7 that are formed through resistance R3 and diode D4 It is formed with the switch of the branch circuit parallel connection that light emitting diode in the second photoelectrical coupler (U2) is formed to second switch module (K2) Access is powered in advance to the solenoid valve spare coil (VC2) that stops in emergency, and pre- electrical current is set in the solenoid valve siding that stops in emergency It encloses between 1st/3rd to three/5ths of the extinction current of (VC2),
    2. wait enable the back-up circuit that stops in emergency carry out control stop in emergency when, second voltage type relay normally open contact (KV22) It connects, to light emitting diode in the resistance R3 and diode D4 branches formed and resistance R7 and the second photoelectrical coupler (U2) The access short circuit that the switch of the branch circuit parallel connection of composition to second switch module (K2) is formed, stop in emergency solenoid valve spare coil (VC2) normal through-flow magnetic is rapidly entered by the second voltage type relay normally open contact (KV22) of connection, makes to stop in emergency The valve of control is closed in solenoid valve quick acting, is stopped in emergency,
    (6) treat that the 4th voltage-type relay normally open contact (KV42) disconnects, the 5th malfunction indicator lamp (MIL5) is extinguished, and prompts user The switch failure open circuit of first switch module (K1)；
    7) when the tertiary voltage type relay in energization through silicon-controlled (SCR) conducting by forming, parking power supply to be removed (DC1) and during stand-by power supply (DC2) terminate to tertiary voltage type relay power, the i.e. physical break to the major loop that stops in emergency Protection under its circuit overcurrent condition because carrying out, wait removing parking power supply (DC1) and when stand-by power supply (DC2) cancels physics and cuts Disconnected protection；
    8) when the tertiary voltage type relay in energization through diode D8, D9 branch by what is formed, the 5th voltage-type relay is treated It is terminated when device normally opened contact (KV52) disconnects to tertiary voltage type relay power, the i.e. physical break to the major loop that stops in emergency Protection be because being carried out in its circuit under the switch failure short-circuit conditions of first switch module, it is pending to cancel object when stopping in emergency Manage tripping protection.
  10. The implementation method of circuit 10. diesel engine according to claim 9 stops in emergency, which is characterized in that described is urgent The extinction current of electromagnetic valve for braking spare coil (VC2) refers to：Guarantee is stopped in emergency solenoid valve normal work and is flowed through tight The minimum current of anxious electromagnetic valve for braking spare coil (VC2).
CN201810000879.8A 2018-01-02 2018-01-02 Emergency shutdown circuit of diesel engine and implementation method thereof Active CN108119252B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108868959A (en) * 2018-06-20 2018-11-23 潍柴动力股份有限公司 A kind of fault detection means of solenoid valve and oil sump for engine
CN109031107A (en) * 2018-07-13 2018-12-18 浙江英洛华新能源科技有限公司 Detect the electron assistant contact circuit of high-voltage relay contact on-off

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105545479A (en) * 2015-11-27 2016-05-04 江苏科技大学 Failure alarm circuit for emergency stop solenoid valve loop of diesel engine and alarm method for failure alarm circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105545479A (en) * 2015-11-27 2016-05-04 江苏科技大学 Failure alarm circuit for emergency stop solenoid valve loop of diesel engine and alarm method for failure alarm circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108868959A (en) * 2018-06-20 2018-11-23 潍柴动力股份有限公司 A kind of fault detection means of solenoid valve and oil sump for engine
CN109031107A (en) * 2018-07-13 2018-12-18 浙江英洛华新能源科技有限公司 Detect the electron assistant contact circuit of high-voltage relay contact on-off
CN109031107B (en) * 2018-07-13 2023-10-03 浙江英洛华新能源科技有限公司 Electronic auxiliary contact circuit for detecting on-off of high-voltage relay contact

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