CN1798921B - EMD locomotive engine governor low oil trip reset - Google Patents
EMD locomotive engine governor low oil trip reset Download PDFInfo
- Publication number
- CN1798921B CN1798921B CN200480015132.6A CN200480015132A CN1798921B CN 1798921 B CN1798921 B CN 1798921B CN 200480015132 A CN200480015132 A CN 200480015132A CN 1798921 B CN1798921 B CN 1798921B
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- CN
- China
- Prior art keywords
- solenoid
- regulator
- plunger
- reset
- electrical signal
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- Expired - Fee Related
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- Y02T10/48—
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- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
An EMD locomotive engine low oil governor reset system, the governor having a low oil reset plunger which moves from an operating position to a tripped position out of a side of the governor when a low oil condition has been sensed and has initiated shut down of the engine, the governor also providing an electrical signal indicating the plunger has been tripped, the system comprising a solenoid mounted adjacent the governor and having a plunger in alignment with the low oil reset plunger for engaging the plunger in the tripped position and moving it to the operating position when the solenoid is activated, the solenoid being connected to the governor so as to receive the electrical signal therefrom; and a timer associated with the solenoid for delaying activation of the solenoid for a predetermined period of time after receipt of the electrical signal from the governor.
Description
The cross reference of related application
The application's invention requires the U.S. Provisional Application No.60/490 based on submission on July 28th, 2003,625 preference.
Technical field
The regulator that the present invention relates on a kind of EMD of being used for locomotive regulator low oily disconnection situation reset (reset) and, relate to a kind of and motor in particular and restart automatically reseting that system is used in combination automatically.
Background technique
Railway locomotive generally need be closed when not runing and not preparing to use for a long time in the long duration.Therefore if the tail-off overlong time, some locomotive system may be damaged so, and design has automatic system to stop automatically and to restart motor when unattended.No matter motor is the automatic or manual starting, and engine protection device all is designed for detection some state in the engine system in starting and running, and makes tail-off under some state.Regrettably, after the EMD locomotive engine had cut out for a long time, the instantaneous state during starting can be detected by this protective gear and cause motor to be closed once more immediately in particular.This situation has been offset motor and has been started automatically/advantage of halt system (AESS) and may need the staff to replace this protective gear to reset motor.
In the protective gear of the electronic part (EMD) of these General Motors locomotive engines, exist hand reset device by competent person's operation to restart motor, therefore the advantage of AESS system on this motor can't be played a role.This device is associated with the Woodward engine controller.The low oil pressure of these regulator detection of engine, if oil pressure is too low, regulator kills engine so.When carrying out this operation, regulator moves to plunger the off position that must carry out hand reset from the working position.This makes the AESS system lose effect in itself.
Summary of the invention
The present invention is by providing a kind of automatic system and making the method for the plunger return of the low oily resetting system of regulator overcome above-mentioned difficulties and shortcoming.
In a preferred form of the invention, provide a kind of EMD locomotive engine to hang down the oil conditioner resetting system, described regulator has low oily reset plunger, described plunger moves to the off position outside the described regulator side from the working position when detecting low oil condition and beginning to kill engine, described regulator also provides the indication electrical signal that described plunger has disconnected, described system comprises near the solenoid that is installed in this regulator and has plunger, described plunger is aimed at described low oily reset plunger to make plunger move to the working position at off position and when described solenoid starts plug engages, and described solenoid is connected with described regulator to receive the electrical signal of self tuning regulator; And the timer that is associated with solenoid, with after receiving electrical signal from regulator with described one period scheduled time of solenoidal start delay.Be arranged to described optimum system choosing described timer with the described sufficiently long time of solenoidal start delay so that this plunger moves to the position of stretching out fully.
In the present invention on the other hand in the content, a kind of EMD of making locomotive engine method that low oil conditioner resetting system resets is provided, described regulator has low oily reset plunger, described plunger moves to the off position outside the described regulator side from the working position when detecting low oil condition and beginning to kill engine, described regulator also provides the indication electrical signal that described plunger has disconnected, this method comprises uses near the solenoid that is installed in the described regulator and has plunger, described plunger is aimed at described low oily reset plunger to make plunger move to the working position at off position and when described solenoid starts plug engages, and described solenoid is connected with described regulator to receive the electrical signal of self tuning regulator; And the timer that is associated with described solenoid of use, with after receiving electrical signal from regulator with described one period scheduled time of solenoidal start delay.This method for optimizing also preferably include described timer will this sufficiently long time of solenoidal start delay so that described plunger moves to the position of stretching out fully.
Description of drawings
Fig. 1 is the schematic elevational view when plunger regulator, solenoid (solenoid) and mounting bracket of the preferred embodiment of the present invention during at off position;
Fig. 2 is the planimetric map when plunger partial cross-section of the embodiment of Fig. 1 during at off position;
Fig. 3 is when plunger view similar in appearance to Fig. 2 during in the working position;
Fig. 4 illustrates the schematic representation of a part that plunger starts the regulator of circuit;
Fig. 5 is the flow chart of the logic of the controller in a period of time during AESS restarts and after engine start;
Fig. 6 is the flow chart that stops the logic of back controller at motor automatically; And
Fig. 7 is the flow chart that single is attempted the restarting system.
Embodiment
As Figure 1-3, the schematically illustrated Woodward locomotive regulator 10 that is used for the EMD locomotive engine among the figure, its structure is a known technology with operating at related domain.In one embodiment of the present invention, support 12 is installed in the side of regulator 10 and the solenoid 14 that supporting has plunger 16.Plunger 16 axially aligns with the outer end of the plunger 18 of regulator 10.As shown in Figures 2 and 3, solenoid controller 20 is preferably and a kind ofly starts automatically/part or the relative computer control of halt system (AESS) as motor, and technology is described as known in the art.Controller 20 comprises timer, and this timer sends signal at described regulator 10 and receives the electrical signal that is sent by regulator 10 when killing engine.
Schematically shown in Figure 4, plunger 18 carries out work explicitly with motor low oil pressure force detection system.Plunger 18 is positioned to stretch out from the wall 22 of regulator 10.Though this regulator is known and here do not elaborate in the present technique field, its basic element of character comprises that oil interrupts barrier film (oil failure diaphragm) 24, engine oil pressure inlet 26 and has bypass mechanism controlling mechanism time lag of 30 28 time lag.Described regulator also comprises failure of oil feed piston (oil failure piston) 32 and the failure of oil feed plunger (oil failure plunger) 34 with plunger 18 operations associated.Alarm contact 35 connects to be incorporated in plunger 18 and starts when described plunger extends.The passage of engine pressure oil is indicated by dash area 36, the oily passage that seals under pressure is indicated by dash area 38, the passage of governor sump oil is indicated by dash area 40, and regulator oil pressure passage is indicated by dash area 42, and regulator is interrupted the oil pressure passage by dash area 44 signs.
When low oil pressure disconnected regulator 10, plunger 18 (spent at least 1 or 2 second) lentamente and stretches out from the wall 22 of regulator 10 under the hydraulic pressure that motor produces.Along with closing of motor, oil pressure disappears.When described plunger 18 stretched out, solenoid 14 did not have enough power and overcomes the hydraulic coupling that plunger 18 is stretched out.Yet when motor stopped or almost stopping, hydraulic coupling reduced significantly and solenoid 14 can be easily stretches out plunger 18 or off position is pushed to working position shown in Figure 3 from shown in Figure 2.
With reference now to Fig. 5,, computer control 20 is illustrated by flow chart, during the AESS of expression EMD motor restarts among the figure to described solenoid 14 and described solenoid running control regularly.Computer is beginning square frame 50 initialization sequence at the beginning, and this sequence sends signal counter 52 is reset to zero, and then, signal advances to decision box 54 to determine that whether reset count is less than 3.If reset count, then sends signal less than 3 so that motor continues automatic turning crankshaft in square frame 56.Whether disconnect, this determines by receiving the signal that sends to computer control 20 from regulator 10 if determining in square frame 58 then that low oil resets.Disconnect if reset, described regulator homing sequence will in square frame 60, be initialised and square frame 62 in delay counter will disconnect the back at described regulator 10 and increase about 1～2 second stop basically so that plunger 18 stretches out fully and the bent axle of motor is rotated.Whether computer control 20 checks reset count greater than 3 once more at square frame 54 subsequently, and determines once more in square frame 58 whether the low oil pressure indicator in the regulator 10 disconnects.If the low oil pressure power indicator in the regulator 10 does not disconnect, then motor remains in operation and starts timer and is initialised in square frame 64.After timer is initialised, in square frame 66, will make another judgement, promptly whether low oil pressure power indicator disconnects, and if its disconnected then reseting procedure by initialization once more.If at this moment low oil pressure power indicator also is not disconnected, then whether then to judge timer at square frame 68.If not then, it will continue to check whether this low oil pressure power indicator disconnects at square frame 66, until determine timer then in square frame 68.Whether at this moment, will disconnect low oil pressure power indicator in square frame 70 and make further judgement, if disconnect, then motor, if do not disconnect, then motor remains in operation if stopping.Identical with the manual starting process, if not starting of motor, then this process is no more than 20 seconds with continuing, and will be allowed to cool off about 50 seconds with rear engine, can restart this sequence then.
With reference now to Fig. 6,, the program that in a period of time that flow chart is shown in motor after stopping the low oily release mechanism of regulator is resetted.Calculator controller 20 is this sequence of initialization in beginning square frame 80, and judges at square frame 82 whether motors stop automatically, and if its stop automatically then in square frame 84, carry out initialization starting timer.In square frame 86, whether then to judge this timer, if then, then computer control 20 judges at square frame 88 whether the low oil indicator of regulator disconnects, if disconnect, then motor stops automatically in square frame 90, and it can not start when rotating crank.On the other hand, if judge timer not then at square frame 86, then computer control 20 judges at square frame 87 whether the low oil pressure indicator disconnects, if disconnect, then it will be reset.If this low oil pressure indicator does not disconnect, then whether then computer checks timer once more in square frame 86, and continues above-mentioned sequence.If judge that in square frame 88 this low oil pressure indicator does not disconnect, then motor will stop automatically and can restart automatically in square frame 92.
With reference now to Fig. 7,, the computer control that flowcharting uses a button start system that low oil conditioner is resetted and carries out.Computer control 20 makes the operation initialization at beginning frame 100, and motor is manually stopped in square frame 102, and the operator utilizes mobile system (OBS) to pilot engine in square frame 104.Then, computer control 20 judges in square frame 106 whether this low oil pressure indicator is disconnected, if do not disconnect, is allowed to continue to use crank to pilot engine at mobile system described in the square frame 108.Yet if the low oil pressure indicator is disconnected, the low oil pressure indicator that solenoid 14 is operated in the regulator in square frame 110 resets, and this makes described mobile system 20 continue to use crank to pilot engine.
When introducing element of the present invention or feature or its preferred embodiment, article " ", " being somebody's turn to do " and " described " are used for expression and have one or more this elements or feature.Term " comprises ", and " comprising " and " having " expression is included, and means except that listed element or feature and may have other element or feature.
Owing to can carry out various changes to the foregoing description without departing from the present invention, institute comprises or all the elements shown in the drawings should be considered to illustrative and not restrictive so describe.
Claims (10)
1. a locomotive engine hangs down the oil conditioner resetting system, described regulator (10) has low oily reset plunger (18), when detecting low oil condition and beginning to close described motor, the off position of described low oily reset plunger outside the working position moves to described regulator (10) side, described regulator also provides the indication electrical signal that described low oily reset plunger has been disconnected, and this system comprises:
Be installed near the described regulator (10) and have the solenoid (14) of plunger (16), described solenoidal plunger is aimed at described low oily reset plunger (18) being used for when described solenoid (14) starts described low oily reset plunger being moved to the working position from off position, and described solenoid (14) is connected with described regulator (10) to receive from the electrical signal of this regulator and to start the operation of described solenoid (14).
2. the system as claimed in claim 1 comprises:
Timer, this timer is associated with described solenoid (14), with behind the electrical signal that receives described regulator (10) with one period scheduled time of start delay of described solenoid (14).
3. system as claimed in claim 2, wherein, described timer with sufficiently long time of start delay of described solenoid (14) so that described low oily reset plunger (18) moves to the position of stretching out fully.
4. system as claimed in claim 3 comprises computer control (20).
5. system as claimed in claim 4, wherein, at solenoid (14) during starts, whether the described low oil of described computer (20) continuation monitoring resets is disconnected, if disconnect, judges then whether motor should close, do not disconnect if perhaps, then continue to allow engine running.
6. the system as claimed in claim 1, wherein, locomotive engine is the EMD locomotive engine.
7. one kind makes locomotive engine hang down the method that the oil conditioner resetting system resets, described regulator (10) has low oily reset plunger (18), described low oily reset plunger moves to the off position outside described regulator (10) side from the working position when detecting low oil condition and beginning to kill engine, described regulator (10) also provides the expression electrical signal that described low oily reset plunger has been disconnected, and this method comprises:
Use is installed near the described regulator (10) and has the solenoid (14) of plunger (16), described solenoidal plunger is aimed at described low oily reset plunger to be used for when described solenoid (14) starts described low oily reset plunger being moved to the working position from off position, described solenoid (14) is connected the electrical signal that comes self tuning regulator with reception with described regulator (10), and
Use the timer be associated with described solenoid (14), with after receiving electrical signal from described regulator (10) with one period scheduled time of start delay of described solenoid (14).
8. method as claimed in claim 7, wherein, described timer with sufficiently long time of start delay of described solenoid (14) so that described low oily reset plunger (18) moves to the position of stretching out fully.
9. method as claimed in claim 8 comprises that the controller that uses a computer (20) operates described solenoid (14).
10. method as claimed in claim 9, wherein, at solenoid (14) during starts, whether the low oil of described computer (20) monitoring resets disconnects, if disconnect, judges then whether motor should close, do not disconnect if perhaps, then continue to allow engine running.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US49062503P | 2003-07-28 | 2003-07-28 | |
| US60/490,625 | 2003-07-28 | ||
| US10/878,744 | 2004-06-28 | ||
| US10/878,744 US7178499B2 (en) | 2003-07-28 | 2004-06-28 | Locomotive engine governor low oil trip reset |
| PCT/US2004/022103 WO2005012721A1 (en) | 2003-07-28 | 2004-07-12 | Emd locomotive engine governor low oil trip reset |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1798921A CN1798921A (en) | 2006-07-05 |
| CN1798921B true CN1798921B (en) | 2011-08-24 |
Family
ID=36819217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200480015132.6A Expired - Fee Related CN1798921B (en) | 2003-07-28 | 2004-07-12 | EMD locomotive engine governor low oil trip reset |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1798921B (en) |
| ZA (1) | ZA200601230B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2563834A (en) * | 1945-05-28 | 1951-08-14 | Woodward Governor Co | Safety control for prime movers |
| US4027202A (en) * | 1975-12-19 | 1977-05-31 | Robertshaw Controls Company | Voltage protection circuit |
| US4413595A (en) * | 1982-05-17 | 1983-11-08 | Potts Jr John E | Diesel locomotive fuel savings and protection system |
| US5265567A (en) * | 1992-06-05 | 1993-11-30 | Ztr Control Systems | EMD locomotive engine protective devices override for use during autostart procedure |
-
2004
- 2004-07-12 CN CN200480015132.6A patent/CN1798921B/en not_active Expired - Fee Related
-
2006
- 2006-02-10 ZA ZA200601230A patent/ZA200601230B/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2563834A (en) * | 1945-05-28 | 1951-08-14 | Woodward Governor Co | Safety control for prime movers |
| US4027202A (en) * | 1975-12-19 | 1977-05-31 | Robertshaw Controls Company | Voltage protection circuit |
| US4413595A (en) * | 1982-05-17 | 1983-11-08 | Potts Jr John E | Diesel locomotive fuel savings and protection system |
| US5265567A (en) * | 1992-06-05 | 1993-11-30 | Ztr Control Systems | EMD locomotive engine protective devices override for use during autostart procedure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1798921A (en) | 2006-07-05 |
| ZA200601230B (en) | 2007-05-30 |
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Granted publication date: 20110824 Termination date: 20150712 |
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| EXPY | Termination of patent right or utility model |