CN108060986A - 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
CN108060986A
CN108060986A CN201810000878.3A CN201810000878A CN108060986A CN 108060986 A CN108060986 A CN 108060986A CN 201810000878 A CN201810000878 A CN 201810000878A CN 108060986 A CN108060986 A CN 108060986A
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China
Prior art keywords
emergency
switch
circuit
stops
power supply
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CN201810000878.3A
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Chinese (zh)
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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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Priority to CN201810000878.3A priority Critical patent/CN108060986A/en
Publication of CN108060986A publication Critical patent/CN108060986A/en
Pending legal-status Critical Current

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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
    • 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
    • F02D2041/228—Warning displays
    • 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)
  • 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；During non-emergent parking, the 6th malfunction indicator lamp is extinguished, and illustrates the non-open circuit of spare coil and its switch enabled is controlled to disconnect；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；It is powered to for use spare coil during stopping in emergency and quickly stops convenient for back-up circuit in advance.

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；Open circuit whether non-to spare coil and control enable standby during the non-emergent parking of diesel engine With the switch of coil, whether short circuit is detected identification, and is to the switch for enabling spare coil during diesel engine stops in emergency No open circuit identification, and is powered in advance to it before spare coil enables, to be cut when changing to spare coil work, and spare coil is fast Speed obtains magnetic into normally through-flow, that is, the electromagnetism valve events that stop in emergency close the valve of control, stop in emergency；And to failure Indicator light is carried out to prompt 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, the 3rd switching tube 300, 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, resistance R10, photoelectrical coupler U, 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 R9, One end phase of the other end of resistance R9 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 R10 simultaneously connect, the cathode and resistance of controllable silicon SCR The other end phase of R10 and after connecing access parking power supply DC1 cathode, form Article 3 with parking power supply DC1 or stand-by power supply DC2 It stops circuit, Article 3 parking circuit is the switch failure short circuit control of major loop overcurrent and first switch module of stopping in emergency Circuit processed；One end of first current relay normally-closed contact KI12 is public with first voltage type relay two-way contact KV12's End is connected, and the other end, which is sequentially connected in series after the switch of second voltage type relay coil KV21, second switch module K2 to access, to stop The cathode of vehicle power supply DC1 forms Article 4 parking circuit with parking power supply DC1 or stand-by power supply DC2, and the Article 4 is stopped back Road is the undercurrent switching control circuit of major loop of stopping in emergency；One end of 4th voltage-type relay coil KV41 and first voltage The common port of type relay two-way contact KV12 is connected, the other end access stop in emergency solenoid valve main coil VC1 cathode with On the connecting line of first switch module K1 switches, Article 5 parking circuit, institute are formed with parking power supply DC1 or stand-by power supply DC2 It is the switch on/off measure loop of first switch module in major loop of stopping in emergency to state Article 5 parking circuit；The resistance R3 One end access stop in emergency solenoid valve spare coil VC2 cathode and second voltage type relay normally open contact KV22 connection On line, the other end and the anode of diode D4 and the anode of diode D5 are connected with each other, the second electricity of cathode access of diode D4 On the connecting line of die mould relay coil KV21 and second switch module K2 switches, the cathode of diode D5 and the sun of diode D6 Pole is connected, and the cathode of diode D6 is connected with one end of resistance R4, the other end of resistance R4 and the control of second switch pipe 200 End processed and one end of resistance R5 are connected with each other, the other end of resistance R5 and the cold end of second switch pipe 200 and the power supply that stops The cathode of DC1 is connected, and the hot end of second switch pipe 200 and one end of one end of resistance R6 and resistance R7 are connected with each other, The common port of the other end access first voltage type relay two-way contact KV12 of resistance R6, the other end of resistance R7 are opened with the 3rd The control terminal for closing pipe 300 is connected, and the cold end of the 3rd switching tube 300 is connected with the cathode for the power supply DC1 that stops, and the 3rd opens The hot end for closing pipe 300 is connected with the cathode of light emitting diode in photoelectrical coupler U, light-emitting diodes in photoelectrical coupler U Common port after the anode series resistance R8 of pipe with first voltage type relay two-way contact KV12 is connected, with the power supply that stops DC1 or stand-by power supply DC2 forms Article 6 parking circuit, and the Article 6 parking circuit is back-up circuit failure inspection of stopping in emergency The circuit that survey and spare coil are powered in advance；After first voltage type relay normally closed contact KV13 concatenates the 3rd malfunction indicator lamp MIL3 It power supply DC3 and is connect with alarm, 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 formed with alarm power supply DC3 to stopping in emergency Alarm circuit during major loop progress physical break protection, that is, major loop overcurrent of stopping in emergency or/and first switch module are opened Close alarm circuit during failure short circuit；First current relay normally-closed contact KI13 is concatenated with Fisrt fault indicator light MIL1, One end after concatenation is connected with the anode for the power supply DC3 that alarms, the other end after concatenation and the anode of diode D7 and the second electricity One end of die mould relay normally open contact KV23 is connected with each other, after the switch of the 3rd switch module K3 of cathode concatenation of diode D7 It is connected with the cathode for the power supply DC3 that alarms, the other end of second voltage type relay normally open contact KV23 is with alarm power supply DC3's Cathode is connected, and second switch mould in stop in emergency major loop undercurrent and undercurrent switching control circuit is formed with alarm power supply DC3 The alarm circuit of block K2 switch failure short circuits；4th voltage-type relay normally closed contact KV42 concatenates the 4th malfunction indicator lamp MIL4 Afterwards, one end is connected with the anode for the power supply DC3 that alarms, and the cathode and the 3rd switch module K3 of other end access diode D7 switch Connecting line on, returned with the alarm of first switch module switch failure open circuit in major loop of stopping in emergency of alarm power supply DC3 compositions Road；5th voltage-type relay normally open contact KV53 power supply DC3 and connects after concatenating the 5th malfunction indicator lamp MIL5 with alarm, with report Alert power supply DC3 forms the alarm circuit of first switch module switch failure short circuit in the major loop that stops in emergency；First switch pipe 100 Cold end be connected with the cathode for the power supply DC3 that alarms, the hot end of first switch pipe 100 concatenates the 5th voltage-type relay The anode of access alarm power supply DC3 after device coil KV51, the 4th voltage-type relay normally open contact KV43, one end of resistance R1 with The anode of alarm power supply DC3 is connected, and the other end of resistance R1 and the anode of the anode of diode D1 and diode D2 are mutually simultaneously It connects, on the cathode of cathode access diode D7 and the connecting line of the 3rd switch module K3 switches of diode D1, diode D2's Cathode is connected with the anode of diode D3, the control of the cathode of diode D3 and one end of resistance R2 and first switch pipe 100 Hold connected with each other, the other end of resistance R2 is connected with the cathode for the power supply DC3 that alarms, and stops in emergency with alarm power supply DC3 compositions The switch failure short-circuit detecting control loop of first switch module in major loop；6th malfunction indicator lamp MIL6 one end and alarm electricity The cathode of source DC3 is connected, and the other end is connected with the emitter of illuminated triode in photoelectrical coupler U, in photoelectrical coupler U The collector of illuminated triode is connected with the anode for the power supply DC3 that alarms, and it is standby to form the solenoid valve that stops in emergency with alarm power supply DC3 The alarm circuit whether to be failed with whether breaking and second switch module K2 the switches of coil VC2；The first switch module The control terminal rear and diesel oil owner connected with each other of the control terminal of K1, the control terminal of second switch module K2 and the 3rd switch module K3 The output of control module is connected；The first switch pipe 100 is N-type metal-oxide-semiconductor or the first switch pipe 100 is three pole of NPN type Pipe；The second switch pipe 200 is N-type metal-oxide-semiconductor or the second switch pipe 200 is NPN type triode；3rd switch Pipe 300 is N-type metal-oxide-semiconductor or the 3rd switching tube 300 is 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.
Above-described first switch pipe 100, when 200 and the 3rd switching tube 300 of second switch pipe is N-type metal-oxide-semiconductor, N The grid of type metal-oxide-semiconductor be first switch pipe 100, the control terminal of 200 and the 3rd switching tube 300 of second switch pipe, N-type metal-oxide-semiconductor Drain electrode for first switch pipe 100, the hot end of 200 and the 3rd switching tube 300 of second switch pipe, the source of N-type metal-oxide-semiconductor Extremely first switch pipe 100, the cold end of 200 and the 3rd switching tube 300 of second switch pipe；The first switch pipe 100, when 200 and the 3rd switching tube 300 of second switch pipe is NPN type triode, the base stage of NPN type triode is first Switching tube 100, the control terminal of 200 and the 3rd switching tube 300 of second switch pipe, the current collection extremely first of NPN type triode are opened Pipe 100, the hot end of 200 and the 3rd switching tube 300 of second switch pipe are closed, the transmitting extremely first of NPN type triode is opened Close pipe 100, the cold end of 200 and the 3rd switching tube 300 of second switch pipe.
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；
2) during the circuit that stops in emergency is in non-emergent parking：
(1) first switch pipe 100 turns on saturation, treats the switch connection of first switch module K1, the 4th voltage-type relay coil KV41 is powered, and the 4th voltage-type relay normally open contact KV43 is connected, and the 5th voltage-type relay coil KV51 is powered：
1. the 5th voltage-type relay normally open contact KV52 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：
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. the 5th voltage-type relay normally open contact KV53 is connected, the 5th malfunction indicator lamp MIL5 is lighted, user first is prompted to open The switch failure short circuit of module K1 is closed,
No matter the 4th voltage-type relay normally closed contact KV42 connect whether, i.e., no matter the switch connection of first switch module K1 Whether, the 4th malfunction indicator lamp MIL4 is to extinguish,
(3) if the switch of second switch module K2 is in the solenoid valve spare coil VC2 that disconnects and stop in emergency in non-open circuit, Then the 6th malfunction indicator lamp MIL6 extinguishes, and otherwise, the 6th malfunction indicator lamp MIL6 is lighted, and 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,
If (4) second voltage type relay normally open contact KV23 is connected, Fisrt fault indicator light MIL1 is lighted, and prompts user second The switch failure short circuit of switch module K2, otherwise, Fisrt fault indicator light MIL1 extinguishes；
3) during the circuit that stops in emergency is in and stops in emergency：
(1) first switch pipe 100 ends, no matter first switch module K1 switch connection whether, the 5th voltage-type relay coil The equal no powers of KV51, the contact of the 5th voltage-type relay are in static state：
1. the 5th voltage-type relay normally open contact KV52 is disconnected, not to stop in emergency major loop overcurrent and first switch module Switch failure fault control circuit generates control signal,
2. the 5th voltage-type relay normally open contact KV53 is disconnected, the 5th malfunction indicator lamp MIL5 extinguishes,
If (2) the switch of first switch module K1 is in and disconnects, the 4th voltage-type relay normally closed contact KV42 is connected, and lights the Four malfunction indicator lamp MIL4 prompt the switch failure open circuit of user's first switch module K1, otherwise, the 4th malfunction indicator lamp MIL4 To extinguish,
(3) if the switch of second switch module K2 is in the solenoid valve spare coil VC2 that disconnects and stop in emergency in non-open circuit, Then the 6th malfunction indicator lamp MIL6 extinguishes, and prompts the switch failure open circuit of user's second switch module K2, otherwise, the 6th failure refers to Show that lamp MIL6 is lighted,
(4) if the detection of the first current relay is recognized is more than or equal to the electricity that stops in emergency by the electric current for the major loop that stops in emergency During magnet valve main coil VC1 extinction currents, the first current relay normally-closed contact KI12 is disconnected, the first current relay Normally-closed contact KI13 is disconnected：
1. the first current relay normally-closed contact KI12 is disconnected, during the back-up circuit that stops in emergency is in for use,
2. the first current relay normally-closed contact KI13 is disconnected, Fisrt fault indicator light MIL1 extinguishes,
(5) treat that the detection of the first current relay recognizes and the solenoid valve that stops in emergency is less than by the electric current for the major loop that stops in emergency During main coil VC1 extinction currents, the first current relay normally-closed contact KI12 is connected, and the first current relay is normally closed Contact (KI13) is connected：
1. the first current relay normally-closed contact KI12 connect, enable the back-up circuit that stops in emergency carry out control stop in emergency,
2. the first current relay normally-closed contact KI13 is connected, Fisrt fault indicator light MIL1 is lighted, and user is prompted promptly to stop Car owner circuit undercurrent,
(6) 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, i.e. the first current relay normally-closed contact KI12, which is in, to be disconnected, The branch that switch through resistance R3, diode D4 and second switch module K2 is formed is to the solenoid valve spare coil VC2 that stops in emergency Pre- to be powered, pre- electrical current is set in 3rd to three/5ths of the extinction current for the solenoid valve spare coil VC2 that stops in emergency Between/mono-,
2. wait to enable stop in emergency back-up circuit carry out control stop in emergency, that is, treat the first current relay normally-closed contact KI12 During connection, second voltage type relay coil KV21 is powered, and second voltage type relay normally open contact KV22 is connected, to resistance The branch short circuit that the switch of R3, diode D4 and second switch module K2 are formed stops in emergency and solenoid valve spare coil VC2 and leads to 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；
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 mistake of stopping in emergency by resistance R9 and R10 Energization latching member controllable silicon SCR generates trigger signal in the switch failure fault control circuit of stream and first switch module, touches Controllable silicon SCR conducting is sent out, tertiary voltage type relay coil KV31 is powered through controllable silicon SCR；
5) it is powered when tertiary voltage type relay is in, i.e., the contact of tertiary voltage type relay is in 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；
6) 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；
7) when the tertiary voltage type relay in energization through diode D8, D9 branch by what is formed, the 5th voltage-type relay is treated Device normally opened contact KV52 is disconnected when terminating 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.
The 6th malfunction indicator lamp MIL6 of the above：When during non-emergent parking：If the 6th malfunction indicator lamp MIL6 is put out It goes out, then Fisrt fault indicator light MIL1 is also extinguishing；If the 6th malfunction indicator lamp MIL6 is lighted, user is prompted to stop in emergency electromagnetism Valve spare coil VC2 open circuits or/and the switch failure short circuit of second switch module K2：(1) if Fisrt fault indicator light MIL1 is in Extinguish, illustrate solenoid valve spare coil VC2 open circuits of stopping in emergency；If (2) Fisrt fault indicator light MIL1 is in and lights, illustrate the The switch failure short circuit of two switch module K2, it is also possible to there is solenoid valve spare coil VC2 open circuits of stopping in emergency.When non-emergent During parking, the 6th malfunction indicator lamp MIL6 extinguishes, and during stopping in emergency, the 6th malfunction indicator lamp MIL6 is lighted, explanation The switch of second switch module K2 is intact, and the solenoid valve spare coil VC2 that stops in emergency is substantially intact.During stopping in emergency, 6th malfunction indicator lamp MIL6 extinguishes, and illustrates the switch failure open circuit of second switch module K2, and the solenoid valve that stops in emergency is spare The non-open circuits of coil VC2.
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 4th malfunction indicator lamp MIL4 is lighted, 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 physical break for major loop progress of stopping in emergency is protected in the switch failure short circuit for closing module, it is therefore prevented that mistakenly stop vehicle；It is opened by first It closes the switch failure short circuit of module 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, illustrate because stop in emergency major loop overcurrent the reason for, to stop in emergency major loop carry out physics cut Stop in emergency major loop undercurrent after disconnected protection, and what the back-up circuit that stops in emergency enabled was controlled stops in emergency；If first Malfunction indicator lamp MIL1 is lighted, and the second malfunction indicator lamp MIL2 extinguishes, and illustrates that not carrying out physics to the major loop that stops in emergency cuts The major loop undercurrent that stops in emergency of disconnected protection, what the back-up circuit that stops in emergency enabled was controlled stops in emergency, and such as promptly stops Vehicle 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 extinguishes, 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 is lighted, 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 It lights, 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 is lighted, and Fisrt fault indicator light MIL1 extinguishes, and says Bright solenoid valve spare coil VC2 open circuits of stopping in emergency；
(7) during diesel engine stops in emergency：6th malfunction indicator lamp MIL6 extinguishes, and illustrates that the switch of second switch module K2 loses Effect open circuit, and the non-open circuits of solenoid valve spare coil VC2 of stopping in emergency.
(8) during non-emergent parking, the 6th malfunction indicator lamp MIL6 extinguishes, and during stopping in emergency, the 6th failure refers to Show that lamp MIL6 is lighted, it is believed that the switch of second switch module K2 and the solenoid valve spare coil VC2 that stops in emergency are substantially 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 closed contacts of KV42., KV43. Four voltage-type relay normally open contacts, the 5th voltage-type relay coils of KV51., the 5th voltage-type relay of KV52, KV53. are normal Open contact, KI11. the first current relay coils, the first current relay normally-closed contact of KI12, KI13., KI21. second Current relay coil, KI22. the second current relay normally opened contacts, 100. first switch pipes, 200. second switch pipes, 300. the 3rd switching tubes, D1, D2, D3, D4, D5, D6, D7, D8, D9. diode, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10. resistance, U. photoelectrical couplers, SCR. is silicon-controlled, DC1. parking power supplys, DC2. stand-by power supplies, DC3. alarm power supplys, VC1. Stop in emergency solenoid valve main coil, and VC2. stops in emergency solenoid valve spare coil, MIL1. Fisrt fault indicator lights, MIL2. second Malfunction indicator lamp, the 3rd malfunction indicator lamp of MIL3., the 4th malfunction indicator lamp of MIL4., the 5th malfunction indicator lamp of MIL5., MIL6. 6th malfunction indicator lamp, K1. first switch modules, 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, the 3rd switching tube 300, 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, electricity Hinder R6, resistance R7, resistance R8, resistance R9, resistance R10, photoelectrical coupler U, 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 R9 is connected, and the other end of resistance R9 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 R10 simultaneously connect, silicon-controlled The other end phase of the cathode of SCR and resistance R10 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；The resistance R3 one end access stop in emergency solenoid valve spare coil VC2 cathode and second voltage type relay it is normal On the connecting line for opening contact KV22, the other end and the anode of diode D4 and the anode of diode D5 are connected with each other, diode D4 Cathode access second voltage type relay coil KV21 and second switch module K2 switch connecting line on, the moon of diode D5 Pole is connected with the anode of diode D6, and the cathode of diode D6 is connected with one end of resistance R4, the other end of resistance R4 with 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 switch pipe 200 it is low Potential end is connected with the cathode for the power supply DC1 that stops, the hot end of second switch pipe 200 and one end of resistance R6 and resistance R7 One end it is connected with each other, the common port of the other end of resistance R6 access first voltage type relay two-way contact KV12, resistance R7 The other end be connected with the control terminal of the 3rd switching tube 300, the cold end of the 3rd switching tube 300 is with parking power supply DC1's Cathode is connected, and the hot end of the 3rd switching tube 300 is connected with the cathode of light emitting diode in photoelectrical coupler U, photoelectricity Common port phase in coupler U after the anode series resistance R8 of light emitting diode with first voltage type relay two-way contact KV12 Connection forms Article 6 parking circuit with parking power supply DC1 or stand-by power supply DC2, and the Article 6 stops circuit promptly to stop The circuit that vehicle back-up circuit failure detection and spare coil are powered in advance；First voltage type relay normally closed contact KV13 concatenations the 3rd It power supply DC3 and is connect with alarm after malfunction indicator lamp MIL3, parking power-fail alarm circuit is formed with alarm power supply DC3；3rd Voltage-type relay normally open contact KV32 power supply DC3 and connects after concatenating the second malfunction indicator lamp MIL2 with alarm, with power supply of alarming DC3 form to stop in emergency major loop carry out physical break protection when alarm circuit, that is, major loop overcurrent of stopping in emergency or/and Alarm circuit during the switch failure short circuit of first switch module；First current relay normally-closed contact KI13 and Fisrt fault Indicator light MIL1 is concatenated, and one end after concatenation is connected with the anode for the power supply DC3 that alarms, the other end after concatenation and diode D7 Anode and second voltage type relay normally open contact KV23 one end it is connected with each other, the 3rd switch of the cathode of diode D7 concatenation Cathode after the switch of module K3 with the power supply DC3 that alarms is connected, the other end of second voltage type relay normally open contact KV23 It is connected with the cathode for the power supply DC3 that alarms, stop in emergency major loop undercurrent and undercurrent switching control time is formed with alarm power supply DC3 The alarm circuit of second switch module K2 switch failures short circuit in road；4th voltage-type relay normally closed contact KV42 concatenations the 4th After malfunction indicator lamp MIL4, one end is connected with the anode for the power supply DC3 that alarms, the cathode and the 3rd of other end access diode D7 On the connecting line of switch module K3 switches, form first switch module switch in the major loop that stops in emergency with alarm power supply DC3 and lose Imitate the alarm circuit of open circuit；It is electric with alarm after the 5th malfunction indicator lamp MIL5 of 5th voltage-type relay normally open contact KV53 concatenations Source DC3 simultaneously connects, and the alarm that first switch module switch failure short circuit in the major loop that stops in emergency is formed with alarm power supply DC3 is returned Road；The cold end of first switch pipe 100 is connected with the cathode for the power supply DC3 that alarms, the hot end string of first switch pipe 100 Access is alarming power supply DC3 just after meeting the 5th voltage-type relay coil KV51, the 4th voltage-type relay normally open contact KV43 Pole, one end of resistance R1 are connected with the anode for the power supply DC3 that alarms, the other end of resistance R1 and the anode of diode D1 and two poles The anode of pipe D2 is connected with each other, the connection of the cathode and the 3rd switch module K3 switches of the cathode access diode D7 of diode D1 On line, the cathode of diode D2 is connected with the anode of diode D3, the cathode of diode D3 and one end and first of resistance R2 The control terminal of switching tube 100 is connected with each other, and the other end of resistance R2 is connected with the cathode for the power supply DC3 that alarms, with power supply of alarming DC3 forms the switch failure short-circuit detecting control loop of first switch module in the major loop that stops in emergency；6th malfunction indicator lamp MIL6 one end is connected with the cathode for the power supply DC3 that alarms, and the other end is connected with the emitter of illuminated triode in photoelectrical coupler U It connects, the collector of illuminated triode is connected with the anode for the power supply DC3 that alarms in photoelectrical coupler U, is formed with alarm power supply DC3 The alarm circuit whether breaking and second switch module K2 the switches of the solenoid valve spare coil VC2 that stops in emergency fail； The control terminal of the control terminal of the first switch module K1, the control terminal of second switch module K2 and the 3rd switch module K3 is mutual And the output connect afterwards with diesel engine main control module is connected.
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 by resistance R9, R10 to controllable silicon SCR control pole Triggering and conducting signal, triggering controllable silicon SCR conducting；When the second current relay normally opened contact KI22 is disconnected, stop power supply DC1 Triggering and conducting signal cannot be provided to controllable silicon SCR control pole, you can control silicon SCR with stand-by power supply DC2 by resistance R9, R10 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 is after switch The pressure drop of itself is about 1V or so, is ensured that during controllable silicon SCR turns on self-locking, 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, both Make in tertiary voltage type relay coil KV31 by electric current fall a part from positive diode D8, D9 shunting along string, and Flow through controllable silicon SCR anode electric current be more than maintain electric current, in order to more reliably ensure controllable silicon SCR conducting self-locking during, and The forward direction being connected 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 be with It is attempted by after positive two diodes along string are changed to the suitable string of three diode forwards between controllable silicon SCR anode and cathode.By 24V is generally in parking power supply DC1 and stand-by power supply DC2 rated voltages, during controllable silicon SCR is ended, when the 5th voltage-type Relay normally open contact KV52 is connected, and tertiary voltage type relay coil KV31 is powered, and the electric current flowed through is through positive suitable string Diode 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 power works normally, because pressure drop is generally between positive and negative the 10% of coil rated voltage on voltage-type relay coil It can work normally.
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.
Above-described 3rd switching tube 300 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 the 3rd switching tube 300 is N-type metal-oxide-semiconductor, the grid of N-type metal-oxide-semiconductor Pole (G) is the control terminal of the 3rd switching tube 300, and the drain electrode (D) of N-type metal-oxide-semiconductor is the hot end of the 3rd switching tube 300, N-type The source electrode (S) of metal-oxide-semiconductor is the cold end of the 3rd switching tube 300；When the 3rd switching tube 300 is NPN type triode, NPN type The base stage of triode is the control terminal of the 3rd switching tube 300, and the height of current collection extremely the 3rd switching tube 300 of NPN type triode is electric Position end, the cold end of transmitting extremely the 3rd switching tube 300 of NPN type triode.
When first switch pipe 100 is N-type metal-oxide-semiconductor, during the switch of the 3rd switch module K3 is in disconnection, short circuit is used Line adjusts gate-source voltage by the 4th voltage-type relay normally open contact KV43 short circuits, by resistance R1 and resistance R2, makes first Switching tube 100 turns on saturation, mixes up the resistance value of rear fixed resistance R1 and resistance R2, and removes the 4th voltage-type relay normally open and touch Point KV43 shorting stubs；When first switch pipe 100 is NPN type triode, the disconnection phase is in the switch of the 3rd switch module K3 Between, with shorting stub by the 4th voltage-type relay normally open contact KV43 short circuits, base current is adjusted by resistance R1 and resistance R2, Switching tube 100 is made to turn on saturation, the resistance value of rear fixed resistance R1 and resistance R2 is mixed up, and removes the 4th voltage-type relay normally open Contact KV43 shorting stubs.
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 ends, and no conductivity control signal sent to the control terminal of first switch pipe 100, and first switch pipe 100 ends, at this time no matter the Whether four voltage-type relay normally open contact KV43 are connected, the 5th equal no powers of voltage-type relay coil KV51, the 5th voltage The contact of type relay is in static state.
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 KV43 is connected, the 5th equal no powers of voltage-type relay coil KV51, 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 4th voltage-type relay Normally opened contact KV43, 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 KV43, 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.
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.
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：Treat the 4th voltage-type relay work Make, the 4th voltage-type relay normally open contact KV43 connect, the 5th voltage-type relay coil KV51 be powered, the 5th voltage-type after The contact of electric appliance enters dynamic, assert the switch failure short circuit of first switch module K1, at this time：5th voltage-type relay normally open Contact KV53 is connected, and lights the 5th malfunction indicator lamp MIL5, prompts the switch failure short circuit of user's first switch module K1；5th Voltage-type relay normally open contact KV52 is connected, the switch failure short circuit to stop in emergency major loop overcurrent and first switch module Control loop generates control signal：(1) if the switch failure fault control of major loop overcurrent of stopping in emergency and first switch module returns Energization latching member controllable silicon SCR is in triggering and conducting self-locking state in road, then controllable silicon SCR is kept to turn on self-locking, that is, is kept 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 State；(2) if energization latching member can in the switch failure fault control circuit of major loop overcurrent of stopping in emergency and first switch module Control 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 through two poles Pipe D8, D9 branch are powered, and the contact of the 5th voltage-type relay, into dynamically, is treated in the contact of tertiary voltage type relay by static state Static state is reverted to, i.e., when the 5th voltage-type relay normally open contact KV52 is disconnected, diode D8, D9 branch stop to the 3rd electricity Die mould relay coil KV31 is powered, and the contact of tertiary voltage type relay reverts to static state.
During the switch of the 3rd switch module K3 disconnects, i.e., during non-emergent parking：No matter the 4th voltage-type relay Whether work, i.e., whether no matter the 4th voltage-type relay normally closed contact KV42 is disconnected, the 4th malfunction indicator lamp MIL4 is to put out It goes out.
During the switch connection of the 3rd switch module K3, that is, during stopping in emergency：No matter the 4th voltage-type relay work Whether work,
Whether i.e. no matter the 4th voltage-type relay normally open contact KV43 is disconnected, the 5th voltage-type relay coil KV51 is obstructed Electricity, the contact of the 5th voltage-type relay is static state, i.e. the 5th voltage-type relay normally open contact KV52, which is in, to be disconnected, the 5th electricity Die mould relay normally open contact KV53, which is in, to be disconnected.
During the switch connection of the 3rd switch module K3, that is, during stopping in emergency：If the 4th voltage-type relay not work Make, i.e. the 4th voltage-type relay normally closed contact KV42 is connected, and lights the 4th malfunction indicator lamp MIL4, prompts user's first switch The switch failure open circuit of module K1.
During the switch connection of the 3rd switch module K3, that is, during stopping in emergency：If the 4th voltage-type relay works, That is the 4th voltage-type relay normally closed contact KV42 is disconnected, and the 4th malfunction indicator lamp MIL4 extinguishes.
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 major loop overcurrent and the first switch module of stopping in emergency by resistance R9 and R10 Switch failure fault control circuit in energization latching member controllable silicon SCR generate trigger signal：(1) if controllable silicon SCR is in and leads Logical state, then keep controllable silicon SCR to turn on, and tertiary voltage type relay coil KV31 holdings are powered through controllable silicon SCR, but this hair The fact that bright middle, is not present, because when controllable silicon SCR is in the conduction state, tertiary voltage type relay coil KV31 is powered, Tertiary voltage type relay normally closed contact KV33 is disconnected, and to stopping in emergency, major loop has carried out physical break protection, stops in emergency Main circuit 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 disconnected When opening, triggering controllable silicon SCR conducting, tertiary voltage type relay coil KV31 is powered through controllable silicon SCR；(3) if 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 not also deposited 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, Tertiary voltage type relay coil KV31 is powered, and tertiary voltage type relay coil KV31 is powered, tertiary voltage type relay Device normally-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 3rd switching tube 300：When second switch pipe 200 is in cut-off, the 3rd switching tube 300 conducting saturation；When When second switch pipe 200 is on saturation, the 3rd switching tube 300 ends.
For photoelectrical coupler U：When the 3rd switching tube 300 ends, then light emitting diode does not shine in photoelectrical coupler U, The phototriode cut-off of light in photoelectrical coupler U；When the 3rd switching tube 300 conducting saturation, then shine in photoelectrical coupler U LED lighting, the phototriode conducting saturation of light in photoelectrical coupler U.
When the phototriode of light in photoelectrical coupler U turns on saturation, then the 6th malfunction indicator lamp MIL6 is lighted.
When the phototriode cut-off of light in photoelectrical coupler U, then the 6th malfunction indicator lamp MIL6 extinguishings.
6th malfunction indicator lamp MIL6 for stop in emergency solenoid valve spare coil VC2 whether open circuit and second switch module The alarm whether switch of K2 fails, during non-emergent parking：If the 6th malfunction indicator lamp MIL6 extinguishes, prompt to use Family is stopped in emergency the non-open circuits of solenoid valve spare coil VC2, and the switch of second switch module K2 disconnects, and Fisrt fault indicates at this time Lamp MIL1, which is in, to be extinguished；If the 6th malfunction indicator lamp MIL6 is lighted, prompt user stop in emergency solenoid valve spare coil VC2 open circuit Or/and the switch failure short circuit of second switch module K2：(1) extinguish if Fisrt fault indicator light MIL1 is in, explanation is stopped in emergency Solenoid valve spare coil VC2 open circuits；(2), if Fisrt fault indicator light MIL1 is in and lights, the switch of second switch module K2 is illustrated Failure short circuit, it is also possible to there is solenoid valve spare coil VC2 open circuits of stopping in emergency.During non-emergent parking, the 6th failure refers to Show that lamp MIL6 extinguishes, and during stopping in emergency, the 6th malfunction indicator lamp MIL6 is lighted, and illustrates the switch of second switch module K2 Intact, the solenoid valve spare coil VC2 that stops in emergency is substantially intact.During stopping in emergency, the 6th malfunction indicator lamp MIL6 extinguishes, Illustrate the switch failure open circuit of second switch module K2, and the non-open circuits of solenoid valve spare coil VC2 of stopping in emergency.
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 When VC2 is in non-off state (regarding as intact)：Diode D4 is turned on, and second switch pipe 200 ends, stop power supply DC1 or Stand-by power supply DC2 passes through solenoid valve spare coil VC2 opening through resistance R3, diode D4 and second switch module K2 of stopping in emergency Pass forms power circuit, and the present invention at this time meets the resistance value selection of resistance R3 claimed below：The electric current of resistance R3 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, so as to fulfill：The back-up circuit that stops in emergency during stopping in emergency is in for use When, to stopping in emergency in the back-up circuit that stops in emergency, solenoid valve spare coil VC2 is powered in advance；To be cut change to is stopped in emergency spare time Road is stopped in emergency, that is, treats that the first current relay normally-closed contact KI12 is connected, second voltage type relay coil KV21 It is powered, second voltage type relay normally open contact KV22 is connected, and the solenoid valve spare coil VC2 that makes to stop in emergency is rapidly entered normally It is through-flow that the valve of control is closed, stopped in emergency by magnetic, solenoid valve quick acting of stopping in emergency.
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 switching tube and meets the conducting saturation requirement of switching tube 200.
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.
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.
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 always maintained at OFF state, then, the second malfunction indicator lamp MIL2 lighted illustrates tight Emergency stop car owner circuit overcurrent；
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 The alarm of short circuit, the i.e. switch of first switch module K1 fail during the non-emergent parking of diesel engine it is short-circuit prompt, if bavin For oil machine during non-emergent parking, the 5th malfunction indicator lamp MIL5 is then lighted in the switch failure short circuit of first switch module K1, no It then keeps extinguishing.The present invention is stopped in emergency period due to assert that the 3rd switch module K3 is serviceable condition in diesel engine, and the 5th Malfunction indicator lamp MIL5 is in OFF state.
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 fails for first switch module switch in the major loop that stops in emergency The alarm of open circuit, if diesel engine during stop in emergency, i.e., during the switch of the 3rd switch module K3 is in connection, if point Bright 4th malfunction indicator lamp MIL4 prompts user's first switch module switch failure open circuit, otherwise, at first switch module switch In on-state.The present invention is due to assert that the 3rd switch module K3 is serviceable condition, therefore during the non-emergent parking of diesel engine, the Four malfunction indicator lamp MIL4 are in OFF state.
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), the 3rd switching tube (300), diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, diode D7, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, electricity Hinder R6, resistance R7, resistance R8, photoelectrical coupler (U)；It is characterized in that, the solenoid valve that stops in emergency promptly stops for twin coil Vehicle solenoid valve, that is, the coil of the solenoid valve that stops in emergency by stop in emergency solenoid valve main coil (VC1) and the solenoid valve that stops in emergency it is standby It is formed with coil (VC2)；The first voltage type relay coil (KV11) directly (DC1) and connects with parking power supply, parking electricity The anode in source (DC1) is connected with the normally open end of first voltage type relay two-way contact (KV12), and stand-by power supply (DC2) is just Pole is connected with the normal-closed end of first voltage type relay two-way contact (KV12), cathode and the parking electricity of stand-by power supply (DC2) The cathode in source (DC1) is connected；The anode concatenation tertiary voltage type relay of the solenoid valve main coil (VC1) that stops in emergency Normally-closed contact (KV33), the second current relay coil (KI21), the first current relay coil (KI11) are afterwards with first The common port of voltage-type relay two-way contact (KV12) is connected, the cathode concatenation for the solenoid valve main coil (VC1) that stops in emergency Cathode after the switch of first switch module (K1) with parking power supply (DC1) is connected, with parking power supply (DC1) or stand-by power supply (DC2) first parking circuit is formed, the major loop that stops in emergency is in first parking circuit, that is, solenoid valve master of stopping in emergency Wire loop；The anode of the solenoid valve spare coil (VC2) that stops in emergency and first voltage type relay two-way contact (KV12) common port is connected, and the cathode concatenation second voltage type relay for the solenoid valve spare coil (VC2) that stops in emergency is normal It opens cathode of the contact (KV22) afterwards with parking power supply (DC1) to be connected, be formed with parking power supply (DC1) or stand-by power supply (DC2) Article 2 parking circuit, the Article 2 parking circuit is the back-up circuit that stops in emergency, that is, stop in emergency solenoid valve spare coil Circuit；One end of second current relay normally opened contact (KI22) is connected with one end of resistance R9, the other end of resistance R9 First voltage type relay two-way contact (KV12) is accessed with one end phase of tertiary voltage type relay coil (KV31) and after connecing Common port, the other end of tertiary voltage type relay coil (KV31) is connected with the anode of silicon-controlled (SCR) and diode The anode of D8 is connected with each other, and the cathode of diode D8 is connected with the anode of diode D9, the cathode concatenation the 5th of diode D9 Voltage-type relay normally open contact (KV52) accesses the cathode of parking power supply (DC1), the control pole and second of silicon-controlled (SCR) afterwards The other end of current relay normally opened contact (KI22) and one end phase of resistance R10 simultaneously connect, cathode and the electricity of silicon-controlled (SCR) The cathode of access parking power supply (DC1) after hindering the other end phase of R10 and connecing, with power supply (DC1) or stand-by power supply (DC2) structure that stops It stops circuit into Article 3, Article 3 parking circuit is that the stop in emergency switch of major loop overcurrent and first switch module loses Imitate fault control circuit；One end of first current relay normally-closed contact (KI12) and first voltage type relay two-way contact (KV12) common port is connected, and the other end is sequentially connected in series second voltage type relay coil (KV21), second switch module (K2) cathode of access parking power supply (DC1) after switch forms Article 4 with parking power supply (DC1) or stand-by power supply (DC2) It stops circuit, Article 4 parking circuit is the undercurrent switching control circuit of major loop of stopping in emergency；4th voltage-type relay One end of device coil (KV41) is connected with the common port of first voltage type relay two-way contact (KV12), and other end access is tight On the connecting line that the cathode of anxious electromagnetic valve for braking main coil (VC1) is switched with first switch module (K1), with parking power supply (DC1) Or stand-by power supply (DC2) forms Article 5 parking circuit, the Article 5 parking circuit is opened in the major loop that stops in emergency first Close the switch on/off measure loop of module；The negative of the solenoid valve spare coil (VC2) that stops in emergency is accessed in one end of the resistance R3 On the connecting line of pole and second voltage type relay normally open contact (KV22), the other end and the anode of diode D4 and diode D5 Anode it is connected with each other, the cathode of diode D4 access second voltage type relay coil (KV21) and second switch module (K2) 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 and the control terminal of second switch pipe (200) and one end of resistance R5 of resistance R4 is connected with each other, resistance The other end of R5 and the cold end of second switch pipe (200) are connected with the cathode of parking power supply (DC1), second switch pipe (200) hot end and one end of resistance R6 and one end of resistance R7 are connected with each other, the first electricity of other end access of resistance R6 The common port of die mould relay two-way contact (KV12), the other end of resistance R7 are connected with the control terminal of the 3rd switching tube (300) It connects, the cold end of the 3rd switching tube (300) is connected with the cathode of parking power supply (DC1), the height electricity of the 3rd switching tube (300) Position end is connected with the cathode of light emitting diode in photoelectrical coupler (U), the anode series of light emitting diode in photoelectrical coupler (U) Common port after connecting resistance R8 with first voltage type relay two-way contact (KV12) is connected, with parking power supply (DC1) or standby Form Article 6 parking circuit with power supply (DC2), Article 6 parking circuit for stop in emergency back-up circuit failure detection and The circuit that spare coil is powered in advance；After first voltage type relay normally closed contact (KV13) concatenates the 3rd malfunction indicator lamp (MIL3) It (DC3) and is connect with alarm power supply, parking power-fail alarm circuit is formed with alarm power supply (DC3)；Tertiary voltage type relay Normally opened contact (KV32) concatenates the second malfunction indicator lamp (MIL2) and (DC3) and is connect with alarm power supply afterwards, with power supply (DC3) structure of alarming The major loop that stops in emergency in pairs carries out alarm circuit during physical break protection, that is, stop in emergency major loop overcurrent or/and first Alarm circuit during the switch failure short circuit of switch module；First current relay normally-closed contact (KI13) refers to Fisrt fault Show that lamp (MIL1) concatenates, one end after concatenation is connected with the anode of alarm power supply (DC3), the other end and diode after concatenation The anode of D7 and one end of second voltage type relay normally open contact (KV23) are connected with each other, the cathode concatenation the 3rd of diode D7 Cathode after the switch of switch module (K3) with alarm power supply (DC3) is connected, second voltage type relay normally open contact (KV23) the other end is connected with the cathode of alarm power supply (DC3), and forming the major loop that stops in emergency with alarm power supply (DC3) owes The alarm circuit of second switch module (K2) switch failure short circuit in stream and undercurrent switching control circuit；4th voltage-type relay After normally-closed contact (KV42) concatenates the 4th malfunction indicator lamp (MIL4), one end is connected with the anode of alarm power supply (DC3), another It terminates on the cathode of diode D7 and the connecting line of the 3rd switch module (K3) switch, is formed with alarm power supply (DC3) urgent The alarm circuit of first switch module switch failure open circuit in parking major loop；5th voltage-type relay normally open contact (KV53) It concatenates the 5th malfunction indicator lamp (MIL5) (DC3) and to connect with alarm power supply afterwards, stops in emergency and lead back with alarm power supply (DC3) composition The alarm circuit of first switch module switch failure short circuit in road；The cold end of first switch pipe (100) and alarm power supply (DC3) cathode is connected, and the hot end of first switch pipe (100) concatenates the 5th voltage-type relay coil (KV51), the Four voltage-type relay normally open contacts (KV43) access the anode of alarm power supply (DC3), one end and the alarm power supply of resistance R1 afterwards (DC3) anode is connected, and the other end of resistance R1 and the anode of the anode of diode D1 and diode D2 are connected with each other, two poles The cathode of cathode access diode D7 of pipe D1 on the connecting line of the 3rd switch module (K3) switch, the cathode of diode D2 and The anode of diode D3 is connected, the cathode of diode D3 and one end of resistance R2 and the control terminal phase of first switch pipe (100) It mutually and connects, the other end of resistance R2 is connected with the cathode of alarm power supply (DC3), stops in emergency with alarm power supply (DC3) composition The switch failure short-circuit detecting control loop of first switch module in major loop；6th malfunction indicator lamp (MIL6) one end and alarm The cathode of power supply (DC3) is connected, and the other end is connected with the emitter of illuminated triode in photoelectrical coupler (U), photoelectricity coupling The collector of illuminated triode is connected with the anode of alarm power supply (DC3) in clutch (U), is formed with alarm power supply (DC3) tight The alarm whether breaking and second switch module (K2) the switch of anxious electromagnetic valve for braking spare coil (VC2) fails is returned Road；The control terminal of the first switch module (K1), the control terminal of second switch module (K2) and the 3rd switch module (K3) It is connected after control terminal is connected with each other with the output of diesel engine main control module；The first switch pipe (100) for 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 It is NPN type triode to manage (200)；3rd switching tube (300) is N-type metal-oxide-semiconductor or the 3rd switching tube (300) is NPN Type triode.
  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 second switch pipe (200) and the 3rd switching tube (300) are N-type metal-oxide-semiconductor, the grid of N-type metal-oxide-semiconductor is opened for first The control terminal of pipe (100), second switch pipe (200) and the 3rd switching tube (300) is closed, the drain electrode of N-type metal-oxide-semiconductor is opened for first The hot end of pipe (100), second switch pipe (200) and the 3rd switching tube (300) is closed, the source electrode of N-type metal-oxide-semiconductor is first The cold end of switching tube (100), second switch pipe (200) and the 3rd switching tube (300)；The first switch pipe (100), when second switch pipe (200) and the 3rd switching tube (300) they are NPN type triode, the base stage of NPN type triode For first switch pipe (100), the control terminal of second switch pipe (200) and the 3rd switching tube (300), the collection of NPN type triode Electrode is first switch pipe (100), the hot end of second switch pipe (200) and the 3rd switching tube (300), three pole of NPN type The cold end of the transmitting of pipe extremely first switch pipe (100), second switch pipe (200) and the 3rd switching tube (300).
  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；
    2) during the circuit that stops in emergency is in non-emergent parking：
    (1) first switch pipe (100) conducting saturation treats the switch connection of first switch module (K1), the 4th voltage-type relay line It encloses (KV41) to be powered, the 4th voltage-type relay normally open contact (KV43) is connected, and the 5th voltage-type relay coil (KV51) is logical Electricity：
    1. the 5th voltage-type relay normally open contact (KV52) is connected, to stop in emergency major loop overcurrent and first switch module Switch failure 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. the 5th voltage-type relay normally open contact (KV53) is connected, the 5th malfunction indicator lamp (MIL5) is lighted, prompt user the The switch failure short circuit of one switch module (K1),
    No matter the 4th voltage-type relay normally closed contact (KV42) connect whether, i.e., no matter the switch of first switch module (K1) Whether connection, the 4th malfunction indicator lamp (MIL4) is to extinguish,
    (3) if the switch of second switch module (K2) is in disconnection and the solenoid valve spare coil (VC2) that stops in emergency is in non-open circuit When, then the 6th malfunction indicator lamp (MIL6) is extinguished, and otherwise, the 6th malfunction indicator lamp (MIL6) is lighted, and 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,
    If (4) second voltage type relay normally open contact (KV23) is connected, Fisrt fault indicator light (MIL1) is lighted, and prompts user The switch failure short circuit of second switch module (K2), otherwise, Fisrt fault indicator light (MIL1) extinguishes；
    3) during the circuit that stops in emergency is in and stops in emergency：
    First switch pipe (100) end, no matter first switch module (K1) switch connection whether, the 5th voltage-type relay Coil (KV51) equal no power, the contact of the 5th voltage-type relay are in static state：
    1. the 5th voltage-type relay normally open contact (KV52) disconnects, not to major loop overcurrent and the first switch module of stopping in emergency Switch failure fault control circuit generate control signal,
    2. the 5th voltage-type relay normally open contact (KV53) disconnects, the 5th malfunction indicator lamp (MIL5) is extinguished,
    (2) disconnected if the switch of first switch module (K1) is in, the 4th voltage-type relay normally closed contact (KV42) is connected, point Bright 4th malfunction indicator lamp (MIL4) prompts the switch failure open circuit of user's first switch module (K1), and otherwise, the 4th failure refers to Show lamp (MIL4) to extinguish,
    (3) if the switch of second switch module (K2) is in disconnection and the solenoid valve spare coil (VC2) that stops in emergency is in non-open circuit When, then the 6th malfunction indicator lamp (MIL6) is extinguished, and prompts the switch failure open circuit of user's second switch module (K2), otherwise, the Six malfunction indicator lamp (MIL6) are lighted,
    (4) if the detection of the first current relay is recognized is more than or equal to the electricity that stops in emergency by the electric current for the major loop that stops in emergency During magnet valve main coil (VC1) extinction current, the first current relay normally-closed contact (KI12) disconnect, the first current mode after Electric appliance normally-closed contact (KI13) disconnects：
    1. the first current relay normally-closed contact (KI12) disconnects, during the back-up circuit that stops in emergency is in for use,
    2. the first current relay normally-closed contact (KI13) disconnects, Fisrt fault indicator light (MIL1) extinguishes,
    (5) treat that the detection of the first current relay recognizes and the solenoid valve that stops in emergency is less than by the electric current for the major loop that stops in emergency During main coil (VC1) extinction current, the first current relay normally-closed contact (KI12) is connected, the first current relay Normally-closed contact (KI13) is connected：
    1. the first current relay normally-closed contact (KI12) is connected, enable the back-up circuit that stops in emergency and control and promptly stop Vehicle,
    2. the first current relay normally-closed contact (KI13) is connected, Fisrt fault indicator light (MIL1) is lighted, and prompts user tight Emergency stop car owner circuit undercurrent,
    (6) 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, i.e. the first current relay normally-closed contact (KI12) is in disconnected It opens, the branch that the switch through resistance R3, diode D4 and second switch module (K2) is formed is to the solenoid valve siding that stops in emergency It encloses (VC2) to be powered in advance, pre- electrical current is set in five points of the extinction current for the solenoid valve spare coil (VC2) that stops in emergency 1/3rd to three between,
    2. wait to enable stop in emergency back-up circuit carry out control stop in emergency, that is, treat the first current relay normally-closed contact (KI12) when connecting, second voltage type relay coil (KV21) is powered, and second voltage type relay normally open contact (KV22) connects Logical, to the branch short circuit that the switch of resistance R3, diode D4 and second switch module (K2) are formed, the solenoid valve that stops in emergency is spare Coil (VC2) simultaneously passes through the second voltage type relay normally open contact (KV22) of connection and rapidly enters normal through-flow magnetic, makes tight The valve of control is closed in anxious electromagnetic valve for braking quick acting, is stopped in emergency；
    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 the major loop that stops in emergency by resistance R9 and R10 Energization latching member silicon-controlled (SCR) generates triggering letter in the switch failure fault control circuit of overcurrent and first switch module Number, silicon-controlled (SCR) conducting is triggered, tertiary voltage type relay coil KV31 is powered through silicon-controlled (SCR)；
    5) it is powered when tertiary voltage type relay is in, i.e., the contact of tertiary voltage type relay is in 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；
    6) 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；
    7) 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).
CN201810000878.3A 2018-01-02 2018-01-02 A kind of diesel engine stops in emergency circuit and its implementation Pending CN108060986A (en)

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Application Number Priority Date Filing Date Title
CN201810000878.3A CN108060986A (en) 2018-01-02 2018-01-02 A kind of diesel engine stops in emergency circuit and its implementation

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112230132A (en) * 2020-04-14 2021-01-15 北京新能源汽车技术创新中心有限公司 High-voltage relay failure detection device and method for battery management system

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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112230132A (en) * 2020-04-14 2021-01-15 北京新能源汽车技术创新中心有限公司 High-voltage relay failure detection device and method for battery management system
CN112230132B (en) * 2020-04-14 2024-04-19 北京国家新能源汽车技术创新中心有限公司 Device and method for detecting failure of high-voltage relay of battery management system

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Application publication date: 20180522