CN108005806A - 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
CN108005806A
CN108005806A CN201711250396.5A CN201711250396A CN108005806A CN 108005806 A CN108005806 A CN 108005806A CN 201711250396 A CN201711250396 A CN 201711250396A CN 108005806 A CN108005806 A CN 108005806A
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China
Prior art keywords
emergency
power supply
type relay
voltage
circuit
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CN201711250396.5A
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Chinese (zh)
Inventor
夏永锋
王长宝
花月圆
齐亮
陈迅
黄澄
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Jiangsu University of Science and Technology
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Jiangsu University of Science and Technology
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Priority to CN201711250396.5A priority Critical patent/CN108005806A/en
Publication of CN108005806A publication Critical patent/CN108005806A/en
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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

Stop in emergency circuit and its implementation the invention discloses a kind of diesel engine, circuit is, there is the Electromagnetic Valve Circuit that stops in emergency of undercurrent detection electric current relay, over-current detection electric current relay including string, stop in emergency spare Electromagnetic Valve Circuit, Electromagnetic Valve Circuit overcurrent of stopping in emergency and its switch failure fault control circuit, stop in emergency solenoid valve undercurrent switching control circuit, switch failure detection control circuit in the Electromagnetic Valve Circuit that stops in emergency, and corresponding alarm circuit.Method is; parking power-fail is directly switch to stand-by power supply and powers and carry out indicator light alarm prompting; spare solenoid valve is switched to when solenoid valve undercurrent or the overcurrent of stopping in emergency to stop in emergency; the cut-out of its circuit is protected when overcurrent of stopping in emergency in Electromagnetic Valve Circuit or/and short-circuit switch failure; and corresponding indicator light alarm prompting is carried out, protect and stop until removing the Electromagnetic Valve Circuit power supply that stops in emergency.

Description

A kind of diesel engine stops in emergency circuit and its implementation
Technical field
The invention belongs to diesel engine safety protection technique field, 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 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, 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 Electromagnetic Valve Circuit monitoring alarm method is many in vehicle-parking circuit, does not just sketch herein, only to the main problem of degaussing parking method Reiterate：Miss the bus and stop！, when parking power loss and/or the Electromagnetic Valve Circuit that stops in emergency disconnect, diesel engine mistakenly stop car, influences Diesel engine 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 the case of 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 failure, 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 path.Seeming perfect set may not realize actually：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 Worked with solenoid valves, pass through the dying of spare solenoid valve closing control, oil-break path.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 alarm power supply is required to be greater than or equal to parking again The rated current of power supply, otherwise 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 be greater than or equal to parking power supply more than two times of rated current, and actually in engineering design alarm power supply it is specified 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 be also impossible to stop power supply rated current it is relevant, and with alarm power supply power supply current relay coil will 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 car Electromagnetic Valve Circuit so as to identify at all Condition, concrete reason are：1. the short-circuit situation 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 short-circuit situation 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 status；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 short-circuit situation 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, rated current of the hardly possible to alarm power supply More than or equal to more than two times of the rated current of parking power supply！, 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. Certainly also number of patent application is：201510845456.2 a kind of diesel-driven generator stop in emergency Electromagnetic Valve Circuit Failure Alarm Circuit and its alarm method, the redundant configuration equipped with stand-by power supply and solenoid valve (being similarly normal-open electromagnetic valve), solves：Parking Stand-by power supply power supply is switched to during power loss；Control recognizes Electromagnetic Valve Circuit disconnection of stopping in emergency, switching when stopping in emergency Work to spare solenoid valves, pass through the dying of spare solenoid valve closing control, oil-break path.Emitting seemingly realizes above-mentioned work( Can, but to be except there are number of patent application：201510846141.X a kind of diesel engine stop in emergency Electromagnetic Valve Circuit failure report Alert circuit and its alarm method it is all there are the problem of and defect, produced by being also diesel-driven generator there are power supply used in alarm lamp Electricity directly power, alarm lamp instruction be can't see at all after diesel-driven generator emergency stop car, because controlling diesel-driven generator emergency stop When, user can not possibly stare at alarm lamp and see, it may be noted that once alarm lamp instruction state only after emergency stop, but diesel-driven generator is anxious Stop not generating electricity, how what is said or talked about has power supply output.And from number of patent application 201510846141.X and number of patent application 201510845456.2 specification described in beneficial effect content see：Diesel engine (diesel generator) stops in emergency electromagnetism Valve partial failure warning circuit, can carry out self-shield in time in device fails, to ensure its solenoid valve that stops in emergency Circuit works normally, so as to fulfill the automatic emergency stop-working protection of diesel engine (diesel generator) in abnormal cases.Into one The attached drawing of step explanation number of patent application 201510846141.X and number of patent application 201510845456.2 is diesel engine master control mould Block sends emergency shutdown instruction to diesel engine (diesel generator) the Electromagnetic Valve Circuit failure alarm circuit that stops in emergency, and control opens The diesel engine (diesel generator) after module switch is connected is closed to stop in emergency Electromagnetic Valve Circuit failure alarm circuit structural representation Figure, that is to say, that the attached drawing of number of patent application 201510846141.X and number of patent application 201510845456.2 is urgent Diesel engine (diesel generator) during parking stops in emergency Electromagnetic Valve Circuit failure alarm circuit structure diagram, thus more into One step illustrates number of patent application 201510846141.X and the diesel engine (bavin described in number of patent application 201510845456.2 Diesel engine) use stop in emergency solenoid valve for magnetic electromagnetic valve for braking.
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, there is provided a kind of diesel engine stops in emergency circuit and its implementation, realizes that parking power supply loses Effect is switched to stand-by power supply power supply, when stop in emergency Electromagnetic Valve Circuit undercurrent, overcurrent, switch failure short circuit switching when stopping in emergency Stop in emergency to spare solenoid valve, solenoid valve overcurrent of stopping in emergency or switch failure also carry out physical break guarantor when short-circuit Shield, ensures to stop in emergency circuit normal work and prevents mistakenly stop；And indicator light is carried out to failure and is prompted respectively.
In order to realize above-mentioned purpose, the technical solution of realization of the invention is：
A kind of diesel engine stops in emergency circuit, including parking power supply DC1, stand-by power supply DC2, alarm power supply DC3, the first electricity Die mould relay, second voltage type relay, tertiary voltage type relay, the 4th voltage-type relay, the 5th voltage-type relay Device, the first current relay, the second current relay, the solenoid valve HV1 that stops in emergency, spare solenoid valve HV2, 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 failure Indicator light MIL5, first switch module K1, second switch module K2, the 3rd switch module K3, switching tube 100, diode D1, two Pole pipe D2, diode D3, resistance R1；The first voltage type relay coil KV11 directly power supply DC1 and connects with parking, stops The cathode of power supply DC1 is connected with the normally open end of first voltage type relay two-way contact KV12, the cathode of stand-by power supply DC2 with The normal-closed end of first voltage type relay two-way contact KV12 is connected, the anode of stand-by power supply DC2 and bearing for parking power supply DC1 Pole is connected；One end of the switch of first switch module K1 is connected with the common port of first voltage type relay two-way contact KV12 Connect, the other end of the switch of first switch module K1 is sequentially connected in series tertiary voltage type relay normally closed contact KV33, the first electric current Type relay coil KI11, the second current relay coil KI21, the solenoid valve HV1 that stops in emergency coil after with stop power supply The anode of DC1 is connected, and forms first parking circuit with parking power supply DC1 or stand-by power supply DC2, described first stops back Road is the Electromagnetic Valve Circuit that stops in emergency；One end of the switch of second switch module K2 and first voltage type relay two-way contact The common port of KV12 is connected, and the other end of the switch of second switch module K2 is sequentially connected in series the coil of spare solenoid valve HV2, Anode after two voltage-type relay normally open contact KV22 with the power supply DC1 that stops is connected, with parking power supply DC1 or stand-by power supply DC2 forms Article 2 parking circuit, and the Article 2 parking circuit is the spare Electromagnetic Valve Circuit that stops in emergency；Second current mode after Electric appliance normally opened contact KI22 and tertiary voltage type relay normally open contact KV32 and the 5th voltage-type relay normally open contact KV52 After connected with each other, one end is connected with the common port of first voltage type relay two-way contact KV12, the 3rd electricity of other end concatenation The anode of access parking power supply DC1, the 3rd is formed with parking power supply DC1 or stand-by power supply DC2 after die mould relay coil KV31 Bar stops circuit, and Article 3 parking circuit is the switch failure short circuit of solenoid valve overcurrent and first switch module of stopping in emergency Control loop；The switch and spare electromagnetism of one end access second switch module K2 of first current relay normally-closed contact KI12 On the connecting line of valve HV2 coils, the other end concatenation second voltage type relay of the first current relay normally-closed contact KI12 Anode after coil KV21 with the power supply DC1 that stops is connected, and Article 4 parking is formed with parking power supply DC1 or stand-by power supply DC2 Circuit, the Article 4 parking circuit is solenoid valve undercurrent switching control circuit of stopping in emergency；The 4th voltage-type relay One end of coil KV41 is connected with the anode for the power supply DC1 that stops, the switch and the 3rd of other end access first switch module K1 On the connecting line of voltage-type relay normally closed contact KV33, form Article 5 with parking power supply DC1 or stand-by power supply DC2 and stop back Road, the switch on and off measure loop that the Article 5 parking circuit is first switch module K1；First voltage type relay is normally closed Contact KV13 power supply DC3 and connects after concatenating the 3rd malfunction indicator lamp MIL3 with alarm, and forming parking power supply with alarm power supply DC3 loses Imitate alarm circuit；The common port of tertiary voltage type relay two-way contact KV34 is connected with the anode for the power supply DC3 that alarms, and the 3rd Cathode phase after normally open end the second malfunction indicator lamp MIL2 of concatenation of voltage-type relay two-way contact KV34 with the power supply DC3 that alarms Connection, the Electromagnetic Valve Circuit that stops in emergency is formed with alarm power supply DC3 by physical break protection alarm circuit；Tertiary voltage type after The normal-closed end of electric appliance two-way contact KV34 is sequentially connected in series the first current relay normally-closed contact KI13, Fisrt fault indicator light MIL1, the 3rd switch module K3 switch after with alarm power supply DC3 cathode be connected, with alarm power supply DC3 form promptly stop Car solenoid valve undercurrent alarm circuit；After 4th voltage-type relay normally closed contact KV42 concatenates the 4th malfunction indicator lamp MIL4, one The anode with the power supply DC3 that alarms is held to be connected, other end access Fisrt fault indicator light MIL1 and the 3rd switch module K3 is switched Connecting line on, the switch failure open circuit detection alarm circuit of first switch module K1 is formed with alarm power supply DC3；5th voltage Type relay normally open contact KV53 power supply DC3 and connects after concatenating the 5th malfunction indicator lamp MIL5 with alarm, with power supply DC3 structures of alarming Into the switch failure short-circuit alarming circuit of first switch module K1；100 cold end of switching tube concatenates the 4th voltage-type relay The anode of access alarm power supply DC3, one end of resistance R1 and report after normally opened contact KV43, the 5th voltage-type relay coil KV51 The anode of alert power supply DC3 is connected, and the other end of resistance R1 and the control terminal of the cathode of diode D1 and switching tube 100 are mutually simultaneously Connect, on the connecting line of anode access Fisrt fault indicator light MIL1 and the 3rd switch module K3 switches of diode D1, switching tube 100 hot ends are connected with the cathode of diode D3, and the anode of diode D3 is connected with the cathode of diode D2, diode The cathode of the anode access alarm power supply DC3 of D2, the switch failure short circuit that first switch module K1 is formed with alarm power supply DC3 are examined Survey control loop；The control terminal of the first switch module K1, the control terminal and the 3rd switch module K3 of second switch module K2 Control terminal it is connected with each other after be connected with the output of diesel engine main control module；The switching tube 100 is p-type metal-oxide-semiconductor；It is or described Switching tube 100 is PNP type triode.
The rated current of the first current relay coil KI11 of the above is equal to the solenoid valve HV1 coils that stop in emergency Extinction current；The rated current of the second current relay coil KI21 is equal to the solenoid valve HV1 coils that stop in emergency Maximum allowed current.
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 HV1 coils is to refer to guarantee to stop in emergency electromagnetism The minimum current of valve HV1 normal works.
The above-described maximum allowed current for stopping in emergency solenoid valve HV1 coils is to refer to guarantee to burn out promptly The maximum operating currenbt of electromagnetic valve for braking HV1 coils.
When above-described switching tube 100 is p-type metal-oxide-semiconductor, the grid of p-type metal-oxide-semiconductor is the control terminal of switching tube 100, p-type The drain electrode of metal-oxide-semiconductor is the cold end of switching tube 100, and the source electrode of p-type metal-oxide-semiconductor is the hot end of switching tube 100；Described opens Pipe 100 is closed when be PNP type triode, the base stage of PNP type triode is the control terminal of switching tube 100, the current collection of PNP type triode The extremely cold end of switching tube 100, the hot end of the transmitting extremely switching tube 100 of PNP type triode.
Above-described diode D1, diode D2 and diode D3 are switching diode；The p-type metal-oxide-semiconductor is N Channel enhancement metal-oxide-semiconductor；The PNP type triode is positive-negative-positive switching transistor.
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 stop power supply DC1 output for it is normal when, first voltage type relay coil KV11 obtain 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 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, 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 prompts user to stop Car power supply 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 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 is disconnected, and the 3rd malfunction indicator lamp MIL3 lighted extinguishes.
2nd, the process for the solenoid valve HV1 and spare solenoid valve HV2 that stops in emergency is controlled
1) second switch module K2 and the 3rd switch module K3 is assert to be intact, and first switch module K1 quality is set to as not Know：
When diesel engine main control module is sent to first switch module K1 and second switch module K2 and the 3rd switch module K3 During emergency shut-down control device signal, the switch connection of second switch module K2, the switch connection of the 3rd switch module K3, first opens Whether the switch for closing module K1 is connected to be unknown,
When diesel engine main control module is not sent out to first switch module K1 and second switch module K2 and the 3rd switch module K3 During going out emergency shut-down control device signal, second switch module K2's switches off, and the 3rd switch module K3's switches off, and first It is unknown whether the switch of switch module K1 is broken as；
2) when the switch connection of first switch module K1, the 4th voltage-type relay coil KV41 energizations, the 4th voltage-type The contact of relay is in dynamic, i.e. the 4th voltage-type relay normally closed contact KV42 is disconnected, the 4th voltage-type relay normally open Contact KV43 is connected；
3) switching off as first switch module K1, the 4th voltage-type relay coil KV41 no powers, the 4th voltage The contact of type relay is in static state, i.e. the 4th voltage-type relay normally closed contact KV42 is connected, and the 4th voltage-type relay is normal Open contact KV43 disconnections；
4) when the 3rd switch module K3 switch in an ON state, no matter whether the switch of first switch module K1 is in Disconnect, i.e., no matter whether the contact of the 4th voltage-type relay is in static state, the 5th equal no power of voltage-type relay, the 5th electricity The contact of die mould relay is in static state, and control signal, and the 5th malfunction indicator lamp are not produced to tertiary voltage type relay MIL5 is extinguishing；
5) when the switch of the 3rd switch module K3 is off, and the switch of first switch module K1 is in and disconnects, I.e. the contact of the 4th voltage-type relay is in static state, then the 5th voltage-type relay no power, the 5th voltage-type relay Contact is in static state, control signal is not produced to tertiary voltage type relay, and the 5th malfunction indicator lamp MIL5 is extinguishing；
6) when the switch of the 3rd switch module K3 is off, and the switch of first switch module K1 is in and connects, I.e. the contact of the 4th voltage-type relay is in dynamic, then the 5th voltage-type relay power, and the 5th voltage-type relay touches Point is in dynamic：
(1) the 5th voltage-type relay normally open contact KV52 is connected, and control signal is produced to tertiary voltage type relay, if Tertiary voltage type relay is in energization self-locking, then tertiary voltage type relay remains powered on self-locking, otherwise, triggers tertiary voltage Type relay power and self-locking,
(2) the 5th voltage-type relay normally open contact KV53 is connected, and lights the 5th malfunction indicator lamp MIL5, prompts user to exist The switch failure short circuit of first switch module K1 during non-emergent parking；
7) when the 3rd switch module K3 switch in an ON state when, if the 4th voltage-type relay normally closed contact KV42 Connect, then light the 4th malfunction indicator lamp MIL4, prompt the switch failure open circuit of user's first switch module K1；
8) when the second current relay detects the maximum allowed current more than the solenoid valve HV1 coils that stop in emergency, The contact of second current relay enters dynamic, i.e. the second current relay normally opened contact KI22 is connected, to tertiary voltage Type relay produces control signal, if tertiary voltage type relay is in energization self-locking, tertiary voltage type relay keeps logical Electric self-locking, otherwise, triggering tertiary voltage type relay power and self-locking；
9) when the second current relay does not detect the maximum allowed current more than the solenoid valve HV1 coils that stop in emergency When, the contact of the second current relay is in static state, i.e. the second current relay normally opened contact KI22 is disconnected, not to the 3rd Voltage-type relay produces control signal；
10) it is powered when tertiary voltage type relay is in, i.e., the contact of tertiary voltage type relay is in dynamic：
(1) the tertiary voltage type relay normally closed contact KV33 being serially connected in the Electromagnetic Valve Circuit that stops in emergency is disconnected, to urgent Electromagnetic valve for braking circuit carries out physical break protection,
(2) the common port of tertiary voltage type relay two-way contact KV34 is connected with normally open end, lights the second malfunction indicator lamp MIL2, prompt user stop in emergency solenoid valve HV1 coil overcurrent or/and first switch module K1 switch failure short circuit：
1. being lit during the second malfunction indicator lamp MIL2 stops in emergency in diesel engine by extinguishing, illustrate the electricity that stops in emergency The coil overcurrent of magnet valve HV1,
2. when the second malfunction indicator lamp MIL2 is lit during the non-emergent parking of diesel engine by extinguishing, illustrate first switch The switch failure short circuit of module K1,
3. stopping in emergency when in diesel engine with during non-emergent parking, the 5th malfunction indicator lamp MIL5 is always maintained at extinguishing shape State, then, the second malfunction indicator lamp MIL2 lighted, the coil overcurrent for the solenoid valve HV1 that illustrates to stop in emergency,
4. lighted during the second malfunction indicator lamp MIL2 stops in emergency in diesel engine by extinguishing, the 5th malfunction indicator lamp MIL5 can be lit during non-emergent parking, then follow-up to stop in emergency in the second malfunction indicator lamp MIL2 lighted, explanation The coil overcurrent of solenoid valve HV1 and the switch failure short circuit of first switch module K1,
5. after the second malfunction indicator lamp MIL2 is lighted during the non-emergent parking of diesel engine by extinguishing, then subsequently point is in The second bright malfunction indicator lamp MIL2, illustrates the switch failure short circuit of first switch module K1；
11) maintained when the electric current that the Electromagnetic Valve Circuit that stops in emergency passes through is less than the minimum of the solenoid valve HV1 coils that stop in emergency During electric current, the contact of the first current relay is in static state, and the first current relay normally-closed contact KI12 is connected, the first electricity Flow pattern relay normally closed contact KI13 is connected：
First current relay normally-closed contact KI12 connect, and second switch module K2 switch in an ON state When, second voltage type relay coil KV21 obtains electric, and the contact of second voltage type relay is changed into dynamic from static state, i.e., second is electric Die mould relay normally open contact KV22 is connected, and spare solenoid valve HV2 obtains magnetic, and control diesel engine stops in emergency,
First current relay normally-closed contact KI13 connect, the switch of the 3rd switch module K3 in an ON state, And the contact of tertiary voltage type relay be in static state, i.e., the common port of tertiary voltage type relay two-way contact KV34 with it is normally closed When termination is logical, then Fisrt fault indicator light MIL1 is lighted, tertiary voltage type relay is normally closed during prompting user is stopped in emergency touches Point KV33 is in connect in the case of stop in emergency the coil undercurrent of solenoid valve HV1,
(3) the first current relay normally-closed contact KI13 is connected, if the contact of tertiary voltage type relay is in dynamic, I.e. the common port of tertiary voltage type relay two-way contact KV34 is disconnected with normal-closed end, and no matter the switch of the 3rd switch module K3 connects Whether logical, Fisrt fault indicator light MIL1 extinguishes；
12) when the electric current for flowing through the solenoid valve HV1 coils that stop in emergency is less than or equal to its maximum allowed current, more than or equal to it During extinction current, the solenoid valve HV1 that stops in emergency obtains magnetic, and control diesel engine stops in emergency.
13) after tertiary voltage type relay power self-locking, wait to remove parking power supply DC1 and stand-by power supply DC2, the 3rd electricity The contact of die mould relay is static state by Dynamic- Recovery.
Beneficial effect：
A kind of diesel engine of the present invention stops in emergency circuit and its implementation, main feature：
(1) during the entire process of during diesel engine stops in emergency period and non-emergent parking, once parking power-fail, Stand-by power supply work is switched to, and lights the 3rd malfunction indicator lamp MIL3, prompts user's parking power-fail；Power supply to be stopped is extensive It is multiple normal, automatically return to parking power supply power supply.
(2) overcurrent or/and switch failure short-circuit protection are not in before diesel engine stops in emergency, is stopped in emergency in diesel engine Period, if the coil undercurrent for the solenoid valve HV1 that stops in emergency, is stopped in emergency by spare solenoid valve HV2, and lights the first event Hinder indicator light MIL1, the coil undercurrent for prompting user to stop in emergency solenoid valve HV1.
(3) during diesel engine stops in emergency, if detecting the coil overcurrent for the solenoid valve HV1 that stops in emergency, cut-out promptly stops Car Electromagnetic Valve Circuit, the Electromagnetic Valve Circuit that stops in emergency to cut-out carry out short-circuit protection, light the second malfunction indicator lamp MIL2, prompt User is stopped in emergency the coil overcurrent of solenoid valve HV1, and by means of the solenoid valve HV1 that stops in emergency coil undercurrent when be switched to it is standby Method of stopping in emergency is carried out with solenoid valve HV2, is stopped in emergency by spare solenoid valve HV2.
(4) the Electromagnetic Valve Circuit switch failure that stops in emergency during the non-emergent parking of diesel engine is short-circuit, and cut-off loop is protected Protect and prevent mistakenly stop car.
(5) overcurrent or/and switch failure short-circuit protection are in before diesel engine stops in emergency, diesel engine is carried out and stops in emergency When, it is switched to spare solenoid valve HV2 and stops in emergency.
(6), when the 5th malfunction indicator lamp MIL5 is lighted, the switch failure short circuit of first switch module K1 is illustrated；When the 4th event Barrier indicator light MIL4 is lighted, and illustrates the switch failure open circuit of first switch module K1.
Brief description of the drawings
A kind of diesel engine that Fig. 1 is the present invention stops in emergency the schematic block circuit diagram of circuit；
In figure：KV11. first voltage type relay coil, KV12. first voltage type relay two-way contacts, KV13. One voltage-type relay normally closed contact, KV21. second voltage type relay coils, KV22. second voltage type relay normally opens 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, KV34. tertiary voltage type relay two-way contacts, KI11. the first current relay coils, KI12, KI13. the first current relay normally-closed contact, KI21. the second current relay coils, the second current relay of KI22. Normally opened contact, the 4th voltage-type relay coils of KV41., the 4th voltage-type relay normally closed contacts of KV42., the electricity of KV43. the 4th Die mould relay normally open contact, the 5th voltage-type relay coils of KV51., the 5th voltage-type relay normally open of KV52, KV53. touch Point, 100. switching tubes, D1, D2, D3. diode, R1. resistance, DC1. parking power supplys, DC2. stand-by power supplies, DC3. alarm power supplys, HV1. stop in emergency solenoid valve, the spare solenoid valves of HV2., MIL1. Fisrt fault indicator lights, the second malfunction indicator lamp of MIL2., MIL3. the 3rd malfunction indicator lamp, the 4th malfunction indicator lamp of MIL4., the 5th malfunction indicator lamp of MIL5., K1. first switch modules, K2. second switch module, the 3rd switch modules of K3..
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 HV1 that stops in emergency, spare solenoid valve HV2, 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, first switch module K1, second switch module K2, the 3rd switch module K3, switching tube 100th, diode D1, diode D2, diode D3, resistance R1；The first voltage type relay coil KV11 directly with parking Power supply DC1 simultaneously connects, and the cathode of parking power supply DC1 is connected with the normally open end of first voltage type relay two-way contact KV12, standby It is connected with the cathode of power supply DC2 with the normal-closed end of first voltage type relay two-way contact KV12, the anode of stand-by power supply DC2 It is connected with the anode for the power supply DC1 that stops；One end of the switch of first switch module K1 is two-way tactile with first voltage type relay The common port of point KV12 is connected, and it is normally closed that the other end of the switch of first switch module K1 is sequentially connected in series tertiary voltage type relay Contact KV33, the first current relay coil KI11, the second current relay coil KI21, stop in emergency solenoid valve HV1 Coil after with stop power supply DC1 anode be connected, with parking power supply DC1 or stand-by power supply DC2 form first stop back Road, first parking circuit is the Electromagnetic Valve Circuit that stops in emergency；One end of the switch of second switch module K2 and the first electricity The common port of die mould relay two-way contact KV12 is connected, and the other end of the switch of second switch module K2 is sequentially connected in series spare Anode after the coil of solenoid valve HV2, second voltage type relay normally open contact KV22 with the power supply DC1 that stops is connected, with stopping Car power supply DC1 or stand-by power supply DC2 forms Article 2 parking circuit, and the Article 2 parking circuit is the spare electromagnetism that stops in emergency Valve circuit；Second current relay normally opened contact KI22 and tertiary voltage type relay normally open contact KV32 and the 5th voltage-type After relay normally open contact KV52 is connected with each other, one end is connected with the common port of first voltage type relay two-way contact KV12 Connect, the anode of access parking power supply DC1 after other end concatenation tertiary voltage type relay coil KV31, with parking power supply DC1 or Stand-by power supply DC2 forms Article 3 parking circuit, and the Article 3 parking circuit solenoid valve overcurrent and first is opened to stop in emergency Close the switch failure fault control circuit of module；One end access second switch mould of first current relay normally-closed contact KI12 On the switch of block K2 and the connecting line of spare solenoid valve HV2 coils, the other end of the first current relay normally-closed contact KI12 Anode after concatenation second voltage type relay coil KV21 with the power supply DC1 that stops is connected, with parking power supply DC1 or standby electricity Source DC2 forms Article 4 parking circuit, and the Article 4 parking circuit is solenoid valve undercurrent switching control circuit of stopping in emergency；Institute The one end for stating the 4th voltage-type relay coil KV41 is connected with the anode for the power supply DC1 that stops, other end access first switch On the switch of module K1 and the connecting line of tertiary voltage type relay normally closed contact KV33, with parking power supply DC1 or stand-by power supply DC2 forms Article 5 parking circuit, the switch on and off measure loop that the Article 5 parking circuit is first switch module K1；The One voltage-type relay normally closed contact KV13 power supply DC3 and connects after concatenating the 3rd malfunction indicator lamp MIL3 with alarm, with alarm electricity Source DC3 forms parking power-fail alarm circuit；The common port of tertiary voltage type relay two-way contact KV34 and alarm power supply The anode of DC3 is connected, after normally open end the second malfunction indicator lamp MIL2 of concatenation of tertiary voltage type relay two-way contact KV34 With alarm power supply DC3 cathode be connected, with alarm power supply DC3 form stop in emergency Electromagnetic Valve Circuit protected by physical break when Alarm circuit；The normal-closed end of tertiary voltage type relay two-way contact KV34 is sequentially connected in series the first current relay normally-closed contact KI13, Fisrt fault indicator light MIL1, the 3rd switch module K3 switch after with alarm power supply DC3 cathode be connected, with report Alert power supply DC3 forms the solenoid valve undercurrent alarm circuit that stops in emergency；4th voltage-type relay normally closed contact KV42 concatenations the 4th After malfunction indicator lamp MIL4, one end with alarm power supply DC3 anode be connected, the other end access Fisrt fault indicator light MIL1 with On the connecting line of 3rd switch module K3 switches, the switch failure open circuit that first switch module K1 is formed with alarm power supply DC3 is examined Survey alarm circuit；5th voltage-type relay normally open contact KV53 concatenate the 5th malfunction indicator lamp MIL5 after with alarm power supply DC3 And connect, the switch failure short-circuit alarming circuit of first switch module K1 is formed with alarm power supply DC3；100 cold end of switching tube Access alarms power supply DC3's after concatenating the 4th voltage-type relay normally open contact KV43, the 5th voltage-type relay coil KV51 Anode, one end of resistance R1 are connected with the anode for the power supply DC3 that alarms, and the other end of resistance R1 and the cathode of diode D1 and open The control terminal of pass pipe 100 is connected with each other, the anode access Fisrt fault indicator light MIL1 and the 3rd switch module K3 of diode D1 On the connecting line of switch, 100 hot end of switching tube is connected with the cathode of diode D3, the anode and diode of diode D3 The cathode of D2 is connected, and the cathode of the anode access alarm power supply DC3 of diode D2, first switch is formed with alarm power supply DC3 The switch failure short-circuit detecting control loop of module K1；The control terminal of the first switch module K1, second switch module K2 It is connected after control terminal and the control terminal of the 3rd switch module K3 are connected with each other with the output of diesel engine main control module.
It is serviceable condition that above-described first switch module K1, second switch module K2 and the 3rd switch module K3, which work as, 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；Do 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.
It is described above in (machine) control signal of stopping in emergency for receiving diesel engine main control module and sending, that is to say, that this hair A kind of bright diesel engine stops in emergency circuit in (machine) control signal of stopping in emergency for receiving diesel engine main control module and sending, this When diesel engine stop in emergency circuit be operated in control diesel engine stop in emergency.
It is described above in (machine) control signal of stopping in emergency for not receiving diesel engine main control module and sending, that is to say, that this A kind of diesel engine of invention circuit that stops in emergency is not receiving (machine) control letter that stops in emergency that diesel engine main control module sends Number, the diesel engine circuit that stops in emergency is operated in non-controlling diesel engine and stops in emergency at this time.
But in real work：For second switch module K2, since spare solenoid valve HV2 frequency of use is not high, So the switch of second switch module K2 is less likely to be damaged；For the 3rd switch module K3, due to the electricity passed through during work Flow it is small, so the switch of the 3rd switch module K3 is also less likely to be damaged；For first switch module K1, due to stopping in emergency Solenoid valve HV1 is mainly used to the solenoid valve to stop in emergency, therefore for relatively spare solenoid valve HV2：Frequency of use is high, such as when urgent Electromagnetic valve for braking HV1 causes its coil short to be just easy to first switch module K1 switching burning short circuit after being used for multiple times, then exists Non-controlling diesel engine stops in emergency Electromagnetic Valve Circuit there is also during overcurrent, or non-emergent parking during stopping in emergency, due to the The short circuit of one switch module K1 switch failures, causes and stops in emergency by mistake.Therefore the second switch module K2 is assert in the present invention It is serviceable condition with the 3rd switch module K3, first switch module K1 is unknown state.
Described diode D1, D2 and D3 are switching diode, and diode D2 and D3 select transwitch diode, diode D1 selects transwitch diode or germanium switching diode.
The switching tube 100 is p-type metal-oxide-semiconductor or PNP type triode, and the p-type metal-oxide-semiconductor used is P-channel enhancement type MOS Pipe, the PNP type triode used is positive-negative-positive switching transistor；When switching tube 100 is p-type metal-oxide-semiconductor, the grid of p-type metal-oxide-semiconductor (G) be switching tube 100 control terminal, the drain electrode (D) of p-type metal-oxide-semiconductor is the cold end of switching tube 100, the source electrode of p-type metal-oxide-semiconductor (S) it is the hot end of switching tube 100, and when the switch of the 3rd switch module K3 is in disconnection, it is electric by the 4th with shorting stub Die mould relay normally open contact KV43 short circuits, adjust gate-source voltage by resistance R1, switching tube 100 is turned on saturation, mix up The resistance value of fixed resistance R1 afterwards, and remove the 4th voltage-type relay normally open contact KV43 shorting stubs；When switching tube 100 is PNP During type triode, the base stage of PNP type triode is the control terminal of switching tube 100, the current collection extremely switching tube of PNP type triode 100 cold end, the hot end of the transmitting extremely switching tube 100 of PNP type triode, and opening in the 3rd switch module K3 Close in when disconnecting, with shorting stub by the 4th voltage-type relay normally open contact KV43 short circuits, pass through resistance R1 and adjust base stage electricity Stream, makes switching tube 100 turn on saturation, mixes up the resistance value of rear fixed resistance R1, and remove the 4th voltage-type relay normally open contact KV43 shorting stubs.When the switch connection of the 3rd switch module K3, i.e. when diode D1 is turned on, pressure drop quilt on diode diode D1 Clamper is in 0.7V or so, the presence of the diode D2 and diode D3 that are gone here and there since forward direction is suitable, then, and the hot end of switching tube 100 Current potential is less than the current potential of 100 control terminal of switching tube, i.e. the potential difference of 100 hot end of switching tube and control terminal is negative, switching tube 100 are turned off, whether no matter the 4th voltage-type relay normally open contact KV43 is connected at this time, the 5th voltage-type relay coil The equal no powers of KV51, the contact of the 5th voltage-type relay are in static state.At the 4th voltage-type relay normally open contact KV43 When disconnecting：No matter the 3rd switch module K3 switch connection whether, the 5th equal no powers of voltage-type relay coil KV51, The contact of five voltage-type relays is in static state.Disconnected when the switch of the 3rd switch module K3 is in, and the 4th voltage-type relay Device normally opened contact KV43 is connected, then the 5th voltage-type relay coil KV51 is powered, and the contact of the 5th voltage-type relay is in Dynamically.
For switching tube 100 for for PNP type triode：Disconnected when the switch of the 3rd switch module K3 is in, i.e. two poles When pipe D1 is in cut-off, if the switch of first switch module K1, which is in, connects (short circuit), the 4th voltage-type relay coil KV41 It is powered, i.e. the 4th voltage-type relay normally open contact KV43 is connected, PNP type triode conducting saturation, the 5th voltage-type relay Coil KV51 is powered, and the contact of the 5th voltage-type relay is in dynamic, and otherwise, the 5th voltage-type relay coil KV51 is obstructed Electricity, the contact of the 5th voltage-type relay are in static state；When the switch connection of the 3rd switch module K3, at this time no matter the 4th voltage Type relay normally open contact KV43 connect whether, i.e., at this time no matter first switch module K1 switch connection whether, three pole of positive-negative-positive Pipe is turned off, the 5th voltage-type relay coil KV51 no powers, and the contact of the 5th voltage-type relay is in static state.
For switching tube 100 for for p-type metal-oxide-semiconductor：Disconnected when the switch of the 3rd switch module K3 is in, i.e. diode D1 During in cut-off, if the switch of first switch module K1, which is in, connects (short circuit), the 4th voltage-type relay coil KV41 is powered, That is the 4th voltage-type relay normally open contact KV43 is connected, p-type metal-oxide-semiconductor conducting saturation, the 5th voltage-type relay coil KV51 It is powered, the contact of the 5th voltage-type relay is in dynamic, otherwise, and the 5th voltage-type relay coil KV51 no powers, the 5th The contact of voltage-type relay is in static state；When the switch connection of the 3rd switch module K3, i.e. when diode D1 is turned on, at this time without Whether connection by the 4th voltage-type relay normally open contact KV43, i.e., at this time no matter the switch connection of first switch module K1 with No, p-type metal-oxide-semiconductor is turned off, the 5th voltage-type relay coil KV51 no powers, and the contact of the 5th voltage-type relay is in quiet State.
End when switching tube 100 is in, whether no matter the 4th voltage-type relay normally open contact KV43 is connected, the 5th voltage The equal no currents of type relay coil KV51 are by the way that the 5th voltage-type relay does not work, at the contact of the 5th voltage-type relay In static state.
When the 4th voltage-type relay normally open contact KV43 is disconnected, no matter whether switching tube 100 is on, the 5th voltage The equal no currents of type relay coil KV51 are by the way that the 5th voltage-type relay does not work, at the contact of the 5th voltage-type relay In static state.
When switching tube 100 turns on saturation, i.e., the switch of the 3rd switch module K3, which is in, disconnects, and the 4th voltage-type relay Normally opened contact KV43, which is in, to be connected, then the 5th voltage-type relay coil KV51 galvanizations, the work of the 5th voltage-type relay, the The contact of five voltage-type relays is in dynamic.
When first switch module K1 switch be in disconnect, then the 4th voltage-type relay coil KV41 no currents by, 4th voltage-type relay does not work, and the contact of the 4th voltage-type relay is in static state.
When first switch module K1 switch be in connect, then the 4th voltage-type relay coil KV41 have electric current by, 4th voltage-type relay works, and the contact of the 4th voltage-type relay is in dynamic.
When assert that the 3rd switch module K3 is serviceable condition, in the 3rd switch module K3 in during switching off：If 5th voltage-type relay coil KV51 no currents are by the way that is, the contact of the 5th voltage-type relay is in static state, illustrates first The switch of switch module K1 be similarly in be broken as it is intact；If the 5th voltage-type relay coil KV51 has electric current by that is, The contact of five voltage-type relays is in dynamic, illustrates that the switch of first switch module K1 is in and connects, the present invention assert first The switch of switch module K1 is in failure short circuit.
When assert that the 3rd switch module K3 be serviceable condition, during the 3rd switch module K3 is in switch connection：Open Close pipe 100 to end, and whether locate unrelated, i.e., the switch with first switch module K1 of dynamic with the contact of the 4th voltage-type relay Whether connect it is unrelated, therefore the 3rd switch module K3 be in switch connection during, the switch failure of first switch module K1 is short Whether detection control loop in road does not damage detection identification to the switch of first switch module K1.
Above-described solenoid valve undercurrent switching control circuit of stopping in emergency is used for：Detected during stopping in emergency urgent During the coil undercurrent of electromagnetic valve for braking HV1, it is switched to spare solenoid valve HV2 and carries out emergency shut-down control device；Stop in emergency solenoid valve Undercurrent switching control circuit and by means of give detect the coil overcurrent for the solenoid valve HV1 that stops in emergency during stop in emergency when, switching Emergency shut-down control device is carried out to spare solenoid valve HV2.
The switch failure fault control circuit of above-described stop in emergency solenoid valve overcurrent and first switch module：For Stop in emergency during stopping in emergency solenoid valve HV1 coil overcurrent and non-emergent parking during first switch module switch failure When short-circuit, to stopping in emergency, Electromagnetic Valve Circuit carries out physical break protection, and to the physical break for the Electromagnetic Valve Circuit that stops in emergency Remain to and terminate (releasing) when parking power supply DC1 and stand-by power supply DC2 is removed, otherwise, solenoid valve returns to stopping in emergency During the physical break protection on road is always held at diesel engine later stop in emergency period and non-emergent parking, that is, it is always maintained at In the whole implementation procedure after diesel engine.The coil overcurrent for the solenoid valve HV1 that stops in emergency is detected during stopping in emergency, The switch failure fault control circuit of solenoid valve overcurrent of then stopping in emergency and first switch module：To the Electromagnetic Valve Circuit that stops in emergency Physical break protection is carried out, and is always held in the later whole implementation procedure of diesel engine, waits to remove parking power supply DC1 and standby (releasing) is terminated with during power supply DC2；The switch failure short circuit of first switch module is detected during non-emergent parking, then promptly The switch failure fault control circuit of electromagnetic valve for braking overcurrent and first switch module：To stopping in emergency, Electromagnetic Valve Circuit carries out thing Cut-out/holding tripping protection is managed, and is always held in the later whole implementation procedure of diesel engine, waits to remove parking power supply DC1 (releasing) is terminated with during stand-by power supply DC2；The switch failure short circuit of first switch module is detected during non-emergent parking, it is right The Electromagnetic Valve Circuit that stops in emergency carries out physical break protection, also solves the switch of first switch module K1 during non-emergent parking Failure short circuit causes the problem of emergency stop by mistake.When stopping in emergency, Electromagnetic Valve Circuit is in stop in emergency solenoid valve overcurrent and first switch The physical break guard mode that the switch failure fault control circuit of module carries out it, then when stopping in emergency to diesel engine, directly Solenoid valve undercurrent switching control circuit of stopping in emergency was connected, control is switched to spare solenoid valve HV2 and stops in emergency.
Fisrt fault indicator light MIL1 described above be used to stopping in emergency during stopping in emergency solenoid valve HV1 coil the Undercurrent prompting under the three non-disconnections of voltage-type relay normally closed contact KV33, when Fisrt fault indicator light MIL1 is lighted, The Electromagnetic Valve Circuit that illustrates to stop in emergency be likely to contact poor electrical resistance become larger or stop in emergency solenoid valve HV1 coil open circuit or should Circuit is breaking elsewhere, such as the switch failure open circuit of first switch module, is also possible to damage including institute's power supply source certainly and leads Cause for stream deficiency.
Above-described second malfunction indicator lamp MIL2 is that the contact of tertiary voltage type relay is in operating state time point Bright, the second malfunction indicator lamp MIL2 is lighted, the coil overcurrent or/and first switch module K1 of the solenoid valve HV1 that illustrates to stop in emergency Switch failure short circuit：
1. being lit during the second malfunction indicator lamp MIL2 stops in emergency in diesel engine by extinguishing, illustrate the electricity that stops in emergency The coil overcurrent of magnet valve HV1,
2. when the second malfunction indicator lamp MIL2 is lit during the non-emergent parking of diesel engine by extinguishing, illustrate first switch The switch failure short circuit of module K1,
3. stopping in emergency when in diesel engine with during non-emergent parking, the 5th malfunction indicator lamp MIL5 is always maintained at extinguishing shape State, then, the second malfunction indicator lamp MIL2 lighted, the coil overcurrent for the solenoid valve HV1 that illustrates to stop in emergency,
4. lighted during the second malfunction indicator lamp MIL2 stops in emergency in diesel engine by extinguishing, the 5th malfunction indicator lamp MIL5 can be lit during non-emergent parking, then follow-up to stop in emergency in the second malfunction indicator lamp MIL2 lighted, explanation The coil overcurrent of solenoid valve HV1 and the switch failure short circuit of first switch module K1,
5. after the second malfunction indicator lamp MIL2 is lighted during the non-emergent parking of diesel engine by extinguishing, then subsequently point is in The second bright malfunction indicator lamp MIL2, illustrates the switch failure short circuit of first switch module K1；
The switch that above-described 4th malfunction indicator lamp MIL4 is used for the first switch module K1 during stopping in emergency loses Effect open circuit prompting, when the 4th malfunction indicator lamp MIL4 is lit, illustrate that the switch failure of first switch module K1 is opened a way.
Above-described 5th malfunction indicator lamp MIL5, the switch for first switch module K1 stop diesel engine is non-emergent Short circuit of failing during car is prompted, if diesel engine, during non-emergent parking, the switch failure of first switch module K1 is short-circuit, then point Bright 5th malfunction indicator lamp MIL5, otherwise keeps extinguishing.The present invention due to assert the 3rd switch module K3 be serviceable condition, therefore During diesel engine stops in emergency, the 5th malfunction indicator lamp MIL5 is in OFF state.
The 3rd malfunction indicator lamp MIL3 of the above, which is used to stop when power supply DC1 fails, to be prompted, when the 3rd event of parking power supply When barrier indicator light MIL3 is lighted, the power supply DC1 output voltages that illustrate to stop are less than first voltage type relay coil KV11 maintenance electricity Press or equal to zero, here when parking power supply DC1 output voltages less than first voltage type relay coil KV11 maintenance voltages or wait Parking power supply DC1 failures (or halting car power supply DC1 dead electricity or decompression) are regarded as when zero.
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.
Above-described first current relay coil KI11：When the electric current flowed through is more than or equal to its rated current 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：The second electricity when the electric current flowed through is more than its rated current 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 the solenoid valve HV1 lines that stop in emergency The extinction current of circle；The rated current of the second current relay coil KI21 is set equal to the solenoid valve that stops in emergency The maximum allowed current of HV1 coils.
The above-described extinction current for stopping in emergency solenoid valve HV1 coils is to refer to guarantee to stop in emergency electromagnetism The minimum current of valve HV1 normal works.
The above-described maximum allowed current for stopping in emergency solenoid valve HV1 coils is to refer to guarantee to burn out promptly The maximum operating currenbt of electromagnetic valve for braking HV1 coils.
When stopping in emergency when the electric current that solenoid valve HV1 coils flow through of stopping in emergency in its extinction current to maximum allowable When between electric current, the present invention assert that the coil for the solenoid valve HV1 that stops in emergency is in normal operating conditions, and otherwise, identification promptly stops Car Electromagnetic Valve Circuit breaks down.
The present invention assert that the output for the power supply DC1 that stops during the contact actuation (action) that can guarantee that first voltage type relay is Normal output.
A kind of above-described diesel engine stop in emergency circuit parking power supply DC1 and stand-by power supply DC2 handoff procedure such as Under：
1) when stop power supply DC1 output for it is normal when, first voltage type relay coil KV11 obtain 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 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, 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 prompts user to stop Car power supply 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 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 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 (HV1), spare solenoid valve (HV2), 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), first switch module (K1), second switch module (K2), the 3rd switch module (K3), switching tube (100), diode D1, diode D2, diode D3, resistance R1；It is characterized in that, the first voltage type Relay coil (KV11) directly (DC1) and connects with parking power supply, cathode and the first voltage type relay of parking power supply (DC1) The normally open end of two-way contact (KV12) is connected, cathode and the first voltage type relay two-way contact of stand-by power supply (DC2) (KV12) normal-closed end is connected, and the anode of stand-by power supply (DC2) is connected with the anode of parking power supply (DC1)；First switch One end of the switch of module (K1) is connected with the common port of first voltage type relay two-way contact (KV12), first switch mould The other end of the switch of block (K1) is sequentially connected in series tertiary voltage type relay normally closed contact (KV33), the first current relay line Enclose (KI11), the second current relay coil (KI21), the solenoid valve that stops in emergency (HV1) coil after with stop power supply (DC1) anode is connected, with parking power supply (DC1) or stand-by power supply (DC2) form first parking circuit, described first Parking circuit is the Electromagnetic Valve Circuit that stops in emergency；One end of the switch of second switch module (K2) is double with first voltage type relay It is connected to the common port of contact (KV12), the other end of the switch of second switch module (K2) is sequentially connected in series spare solenoid valve (HV2) the anode of coil, second voltage type relay normally open contact (KV22) afterwards with parking power supply (DC1) is connected, with stopping Car power supply (DC1) or stand-by power supply (DC2) form Article 2 parking circuit, and the Article 2 parking circuit is spare to stop in emergency Electromagnetic Valve Circuit；Second current relay normally opened contact (KI22) and tertiary voltage type relay normally open contact (KV32) and the After five voltage-type relay normally open contacts (KV52) are connected with each other, one end and first voltage type relay two-way contact (KV12) Common port is connected, and other end concatenation tertiary voltage type relay coil (KV31) accesses the anode of parking power supply (DC1) afterwards, with Parking power supply (DC1) or stand-by power supply (DC2) form Article 3 parking circuit, and the Article 3 parking circuit is the electricity that stops in emergency The switch failure fault control circuit of magnet valve overcurrent and first switch module；First current relay normally-closed contact (KI12) On the switch of one end access second switch module (K2) and the connecting line of spare solenoid valve (HV2) coil, the first current mode relay The other end of device normally-closed contact (KI12) concatenates anode of the second voltage type relay coil (KV21) afterwards with parking power supply (DC1) It is connected, forms Article 4 parking circuit with parking power supply (DC1) or stand-by power supply (DC2), the Article 4 parking circuit is Stop in emergency solenoid valve undercurrent switching control circuit；One end of the 4th voltage-type relay coil (KV41) and parking power supply (DC1) anode is connected, switch and the tertiary voltage type relay normally closed contact of other end access first switch module (K1) (KV33) on connecting line, Article 5 parking circuit, the Article 5 are formed with parking power supply (DC1) or stand-by power supply (DC2) Stop the switch on and off measure loop that circuit is first switch module (K1)；First voltage type relay normally closed contact (KV13) is gone here and there Connect the 3rd malfunction indicator lamp (MIL3) (DC3) and to connect with alarm power supply afterwards, parking power-fail report is formed with alarm power supply (DC3) Alert circuit；The common port of tertiary voltage type relay two-way contact (KV34) is connected with the anode of alarm power supply (DC3), and the 3rd The normally open end of voltage-type relay two-way contact (KV34) concatenate the second malfunction indicator lamp (MIL2) afterwards with alarm power supply (DC3) Cathode is connected, and the Electromagnetic Valve Circuit that stops in emergency is formed with alarm power supply (DC3) by physical break protection alarm circuit；3rd The normal-closed end of voltage-type relay two-way contact (KV34) is sequentially connected in series the first current relay normally-closed contact (KI13), first Malfunction indicator lamp (MIL1), the 3rd switch module (K3) switch after with alarm power supply (DC3) cathode be connected, with alarm electricity Source (DC3) forms the solenoid valve undercurrent alarm circuit that stops in emergency；4th voltage-type relay normally closed contact (KV42) concatenation the 4th After malfunction indicator lamp (MIL4), one end is connected with the anode of alarm power supply (DC3), other end access Fisrt fault indicator light (MIL1) with the connecting line of the 3rd switch module (K3) switch, first switch module (K1) is formed with alarm power supply (DC3) Switch failure open circuit detection alarm circuit；5th voltage-type relay normally open contact (KV53) concatenates the 5th malfunction indicator lamp (MIL5) (DC3) and connect with alarm power supply afterwards, the switch failure short circuit of first switch module (K1) is formed with alarm power supply (DC3) Alarm circuit；Switching tube (100) cold end concatenates the 4th voltage-type relay normally open contact (KV43), the 5th voltage-type relay Device coil (KV51) accesses the anode of alarm power supply (DC3) afterwards, and one end of resistance R1 is connected with the anode of alarm power supply (DC3) Connect, the other end of resistance R1 and the control terminal of the cathode and switching tube (100) of diode D1 are connected with each other, the anode of diode D1 Access on the connecting line that Fisrt fault indicator light (MIL1) is switched with the 3rd switch module (K3), switching tube (100) hot end It is connected with the cathode of diode D3, the anode of diode D3 is connected with the cathode of diode D2, and the anode of diode D2 connects Enter to alarm the cathode of power supply DC3, and the switch failure short-circuit detecting that first switch module (K1) is formed with alarm power supply DC3 controls back 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 switching tube (100) is p-type metal-oxide-semiconductor；It is or described Switching tube (100) is PNP type triode.
  2. The circuit 2. a kind of diesel engine according to claim 1 stops in emergency, it is characterised in that the first current mode relay The rated current of device coil (KI11) is equal to the extinction current for solenoid valve (HV1) coil that stops in emergency；Second electric current The rated current of type relay coil (KI21) is equal to the maximum allowed current for solenoid valve (HV1) coil that stops in emergency.
  3. The circuit 3. a kind of diesel engine according to claim 1 stops in emergency, it is characterised 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 to be touched The maximum current that point (KV33) allows to flow through is equal to or the rated current more than parking power supply (DC1).
  4. The circuit 4. a kind of diesel engine according to claim 2 stops in emergency, it is characterised in that the electromagnetism that stops in emergency The extinction current of valve (HV1) coil be refer to guarantee stop in emergency solenoid valve (HV1) normal work minimum current.
  5. The circuit 5. a kind of diesel engine according to claim 2 stops in emergency, it is characterised in that the electromagnetism that stops in emergency The maximum allowed current of valve (HV1) coil is to refer to guarantee to burn out the maximum work of the solenoid valve that stops in emergency (HV1) coil Make electric current.
  6. The circuit 6. a kind of diesel engine according to claim 1 stops in emergency, it is characterised in that the switching tube (100) For p-type metal-oxide-semiconductor when, the grid of p-type metal-oxide-semiconductor is the control terminal of switching tube (100), and the drain electrode of p-type metal-oxide-semiconductor is switching tube (100) Cold end, the source electrode of p-type metal-oxide-semiconductor is the hot end of switching tube (100).
  7. The circuit 7. a kind of diesel engine according to claim 1 stops in emergency, it is characterised in that the switching tube (100) For PNP type triode when, the base stage of PNP type triode is the control terminal of switching tube (100), and the current collection of PNP type triode is extremely The cold end of switching tube (100), the hot end of the transmitting extremely switching tube (100) of PNP type triode.
  8. The circuit 8. a kind of diesel engine according to claim 1 stops in emergency, it is characterised in that the diode D1, two Pole pipe D2 and diode D3 is switching diode.
  9. The circuit 9. a kind of diesel engine according to claim 1 stops in emergency, it is characterised in that the p-type metal-oxide-semiconductor is P Channel enhancement metal-oxide-semiconductor；The PNP type triode is positive-negative-positive switching transistor.
  10. The implementation method of circuit 10. a kind of diesel engine according to claims 1 to 3 any bar stops in emergency, its 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) output 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 prompts user to stop Car power supply (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) 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 of stop in emergency solenoid valve (HV1) and spare solenoid valve (HV2) is controlled
    1) assert second switch module (K2) and the 3rd switch module (K3) be it is intact, first switch module (K1) quality be set to for It is unknown：
    When diesel engine main control module is sent out to first switch module (K1) and second switch module (K2) and the 3rd switch module (K3) During going out emergency shut-down control device signal, the switch connection of second switch module (K2), the switch connection of the 3rd switch module (K3), Whether the switch of first switch module (K1) is connected to be unknown,
    When diesel engine main control module is not to first switch module (K1) and second switch module (K2) and the 3rd switch module (K3) During sending emergency shut-down control device signal, second switch module (K2's) switches off, and the switch of the 3rd switch module (K3) breaks Open, it is unknown whether the switch of first switch module (K1) is broken as；
    2) when the switch connection of first switch module (K1), the energization of the 4th voltage-type relay coil (KV41), the 4th voltage-type The contact of relay is in dynamic, i.e. the 4th voltage-type relay normally closed contact (KV42) disconnects, and the 4th voltage-type relay is normal Open contact (KV43) connection；
    3) switching off as first switch module (K1), the 4th voltage-type relay coil (KV41) no power, the 4th voltage The contact of type relay is in static state, i.e. the 4th voltage-type relay normally closed contact (KV42) is connected, the 4th voltage-type relay Normally opened contact (KV43) disconnects；
    4) when the 3rd switch module (K3) switch in an ON state, no matter whether the switch of first switch module (K1) is in Disconnect, i.e., no matter whether the contact of the 4th voltage-type relay is in static state, the 5th equal no power of voltage-type relay, the 5th electricity The contact of die mould relay is in static state, and control signal, and the 5th malfunction indicator lamp are not produced to tertiary voltage type relay (MIL5) it is extinguishing；
    5) when the switch of the 3rd switch module (K3) is off, and the switch of first switch module (K1) is in and disconnects, I.e. the contact of the 4th voltage-type relay is in static state, then the 5th voltage-type relay no power, the 5th voltage-type relay Contact is in static state, control signal is not produced to tertiary voltage type relay, and the 5th malfunction indicator lamp (MIL5) is extinguishing；
    6) when the switch of the 3rd switch module (K3) is off, and the switch of first switch module (K1) is in and connects, I.e. the contact of the 4th voltage-type relay is in dynamic, then the 5th voltage-type relay power, and the 5th voltage-type relay touches Point is in dynamic：
    (1) the 5th voltage-type relay normally open contact (KV52) is connected, and control signal is produced to tertiary voltage type relay, if the Three voltage-type relays are in energization self-locking, then tertiary voltage type relay remains powered on self-locking, otherwise, trigger tertiary voltage type Relay power and self-locking,
    (2) the 5th voltage-type relay normally open contact (KV53) is connected, and lights the 5th malfunction indicator lamp (MIL5), prompts user to exist The switch failure short circuit of first switch module (K1) during non-emergent parking；
    7) when the 3rd switch module (K3) switch in an ON state when, if the 4th voltage-type relay normally closed contact (KV42) Connect, then light the 4th malfunction indicator lamp (MIL4), prompt the switch failure open circuit of user's first switch module (K1)；
    8) when the second current relay detects the maximum allowed current more than solenoid valve (HV1) coil that stops in emergency, the The contact of two current relay enters dynamic, i.e. the second current relay normally opened contact (KI22) is connected, to tertiary voltage Type relay produces control signal, if tertiary voltage type relay is in energization self-locking, tertiary voltage type relay keeps logical Electric self-locking, otherwise, triggering tertiary voltage type relay power and self-locking；
    9) when the second current relay does not detect the maximum allowed current more than solenoid valve (HV1) coil that stops in emergency When, the contact of the second current relay is in static state, i.e. the second current relay normally opened contact (KI22) disconnection, not to the Three voltage-type relays produce control signal；
    10) it is powered when tertiary voltage type relay is in, i.e., the contact of tertiary voltage type relay is in dynamic：
    (1) the tertiary voltage type relay normally closed contact (KV33) being serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects, to promptly stopping Car Electromagnetic Valve Circuit carries out physical break protection,
    (2) the common port of tertiary voltage type relay two-way contact (KV34) is connected with normally open end, lights the second malfunction indicator lamp (MIL2), prompting user stop in emergency solenoid valve (HV1) coil overcurrent or/and first switch module (K1) switch failure it is short Road：
    1. being lit during the second malfunction indicator lamp (MIL2) is stopped in emergency in diesel engine by extinguishing, illustrate the electromagnetism that stops in emergency The coil overcurrent of valve (HV1),
    2. when the second malfunction indicator lamp (MIL2) is lit during the non-emergent parking of diesel engine by extinguishing, illustrate first switch mould The switch failure short circuit of block (K1),
    3. stopping in emergency when in diesel engine with during non-emergent parking, the 5th malfunction indicator lamp (MIL5) is always maintained at extinguishing shape State, then, the second malfunction indicator lamp (MIL2) lighted, the coil overcurrent for the solenoid valve (HV1) that illustrates to stop in emergency,
    4. lighted during the second malfunction indicator lamp (MIL2) is stopped in emergency in diesel engine by extinguishing, the 5th malfunction indicator lamp (MIL5) can be lit during non-emergent parking, then it is follow-up in the second malfunction indicator lamp (MIL2) lighted, illustrate urgent The switch failure short circuit of the coil overcurrent and first switch module (K1) of electromagnetic valve for braking (HV1),
    5. after the second malfunction indicator lamp (MIL2) is lighted during the non-emergent parking of diesel engine by extinguishing, then follow-up be in is lighted The second malfunction indicator lamp (MIL2), illustrate first switch module (K1) switch failure short circuit；
    11) electricity is maintained when the electric current that the Electromagnetic Valve Circuit that stops in emergency passes through is less than the minimum of solenoid valve (HV1) coil that stops in emergency During stream, the contact of the first current relay is in static state, and the first current relay normally-closed contact (KI12) is connected, the first electricity Flow pattern relay normally closed contact (KI13) is connected：
    First current relay normally-closed contact (KI12) connect, and second switch module (K2) switch in an ON state When, second voltage type relay coil (KV21) must be electric, and the contact of second voltage type relay is changed into dynamically from static state, i.e., and second Voltage-type relay normally open contact (KV22) is connected, and spare solenoid valve (HV2) obtains magnetic, and control diesel engine stops in emergency,
    First current relay normally-closed contact (KI13) connect, the switch of the 3rd switch module (K3) in an ON state, And the contact of tertiary voltage type relay is in static state, i.e., the common port of tertiary voltage type relay two-way contact (KV34) with it is normal When closed end is connected, then Fisrt fault indicator light (MIL1) is lighted, tertiary voltage type relay is normal during prompting user is stopped in emergency Closed contact (KV33) is in connect in the case of stop in emergency the coil undercurrent of solenoid valve (HV1),
    (3) the first current relay normally-closed contact (KI13) is connected, if the contact of tertiary voltage type relay is in dynamic, i.e., The common port of tertiary voltage type relay two-way contact (KV34) is disconnected with normal-closed end, no matter the switch of the 3rd switch module (K3) Whether connection, Fisrt fault indicator light (MIL1) extinguishes；
    12) when the electric current for flowing through the solenoid valve that stops in emergency (HV1) coil is less than or equal to its maximum allowed current, more than or equal to it most During small maintenance electric current, the solenoid valve that stops in emergency (HV1) obtains magnetic, and control diesel engine stops in emergency.
    13) after tertiary voltage type relay power self-locking, wait to remove parking power supply (DC1) and stand-by power supply (DC2), the 3rd electricity The contact of die mould relay is static state by Dynamic- Recovery.
CN201711250396.5A 2017-12-01 2017-12-01 A kind of diesel engine stops in emergency circuit and its implementation Pending CN108005806A (en)

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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

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