CN112145300A - Diesel engine control method for diesel locomotive - Google Patents
Diesel engine control method for diesel locomotive Download PDFInfo
- Publication number
- CN112145300A CN112145300A CN202011030963.8A CN202011030963A CN112145300A CN 112145300 A CN112145300 A CN 112145300A CN 202011030963 A CN202011030963 A CN 202011030963A CN 112145300 A CN112145300 A CN 112145300A
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- China
- Prior art keywords
- diesel engine
- diesel
- time
- control system
- working condition
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000003137 locomotive effect Effects 0.000 title claims abstract description 15
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 239000003921 oil Substances 0.000 description 16
- 238000005507 spraying Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention relates to the technical field of diesel locomotives, in particular to a diesel engine control method of a diesel locomotive, which comprises the following steps: in the running process of the diesel engine, if the diesel engine is in a certain low-load working condition point to run; the method comprises the following steps that a diesel engine control system records the running time of a diesel engine at a plurality of low-load working condition points; the diesel engine control system counts the running time of all low-load working condition points, and the running time is superposed and recorded as T1; and when the accumulated running time T1 is greater than T2, controlling the diesel engine to keep the current output power, increasing the rotating speed to three-quarter of the rated rotating speed, and continuously running for T3 time, wherein after the diesel engine runs for T3 time at the three-quarter of the rated rotating speed, the diesel engine control system regulates the diesel engine to the previous working condition point to continue running. According to the control method for the diesel engine of the diesel locomotive, disclosed by the invention, the exhaust temperature of the diesel engine after combustion is improved by increasing the rotating speed of the diesel engine after the accumulated time is reached, and oil stains in an exhaust pipeline are combusted by utilizing the high temperature of the diesel engine, so that the oil stains accumulated in the exhaust pipeline are removed.
Description
Technical Field
The invention relates to the technical field of diesel locomotives, in particular to a diesel engine control method of a diesel locomotive.
Background
When the existing diesel engine of the diesel locomotive runs at low load for a long time, a large amount of oil stains formed by fuel oil, carbon deposit and the like which are not completely combusted are accumulated in the exhaust passage, so that faults of oil leakage at each connection part of the exhaust passage, fire jetting at the outlet of the exhaust passage and the like occur in the diesel locomotive.
Disclosure of Invention
In order to overcome the defects that oil leakage is caused by easy accumulation of oil stains at the exhaust pipe of the existing diesel engine and the outlet is sprayed with fire, the invention provides a control method of the diesel engine of the diesel locomotive, which improves the exhaust temperature of the diesel engine after combustion by improving the rotating speed of the diesel engine.
The technical scheme adopted by the invention for solving the technical problems is as follows: a diesel engine control method for an internal combustion locomotive comprises the following steps: s1: in the running process of the diesel engine, when the diesel engine runs under a certain low-load working condition; s2: the method comprises the following steps that a diesel engine control system records the running time of a diesel engine at a plurality of low-load working condition points; s3: the diesel engine control system counts the running time of all low-load working condition points, and the running time is superposed and recorded as T1; s4: and when the accumulated operation time T1 is greater than T2, controlling the diesel engine to keep the current output power, increasing the speed to three-quarter of the calibrated speed, continuously operating for T3 time, and S5: and when the diesel engine runs for T3 time at the three-quarter of the rated speed, the diesel engine control system adjusts the diesel engine to the previous working condition point to continue running.
Further, the low-load operating point in the step S2 is formed by t1+ t2+ t3+. tn, and n in tn is more than or equal to 2.
Further, T1+ T2+ T3+. tn = T1; and n in tn is more than or equal to 2.
Further, T1, which includes step S3, is the sum of the run times for all of the low load operating points in step S2.
Further, when the engine speed is T1 > T2 in the step S4, the current output power of the diesel engine is kept, the engine speed is increased to three-quarter of the nominal engine speed, and the power of the diesel engine is unchanged.
Further, including step S4 running time T3, the diesel engine control system controls the diesel engine to return to the previous operating point.
Further, when the diesel power demand is changed during the execution of step S5, the execution of step S5 is suspended.
The control method of the diesel engine of the diesel locomotive has the advantages that the rotating speed of the diesel engine is increased, the exhaust temperature of the diesel engine after combustion is increased, oil stains in the exhaust pipeline of the diesel engine are combusted at high temperature, the oil stains accumulated in the exhaust pipeline are removed, and the problems of oil leakage of the exhaust pipeline and fire spraying at an outlet are solved.
Detailed Description
A diesel engine control method for an internal combustion locomotive comprises the following steps: s1: in the running process of the diesel engine, the diesel engine is under a certain low-load working condition; s2: the method comprises the following steps that a diesel engine control system records the running time of a diesel engine at a plurality of low-load working condition points; s3: the diesel engine control system counts the running time of all low-load working condition points, and the running time is superposed and recorded as T1; s4: and when the accumulated operation time T1 is greater than T2, controlling the diesel engine to keep the current output power, increasing the speed to three-quarter of the calibrated speed, continuously operating for T3 time, and S5: and when the diesel engine runs for T3 time at the three-quarter of the rated speed, the diesel engine control system adjusts the diesel engine to the previous working condition point to continue running.
The low-load operating point in the step S2 is formed by t1+ t2+ t3+. tn, and n in tn is more than or equal to 2. T1+ T2+ T3+. tn = T1; and n in tn is more than or equal to 2. T1 in step S3 is the sum of the run times for all of the low load operating points in step S2. And when the T1 is more than T2 in the step S4, keeping the current output power of the diesel engine, and increasing the rotating speed to three-quarter of the calibrated rotating speed. And step S4, the operation time is T3, and the diesel engine control system controls the diesel engine to return to the previous operating point for operation. When the diesel power demand is changed during the execution of step S5, the execution of step S5 is suspended. When the power demand of the diesel engine changes, the control method is stopped, and the power output is preferentially ensured.
The first embodiment is as follows:
s1: in the running process of the diesel engine, when the diesel engine runs under a certain low-load working condition; s2: the diesel engine control system records the running times t1, t2 and t3 of the diesel engine at a low-load working point; s3: the diesel engine control system records the running time of the low-load working points of T1, T2 and T3, and the running time is superposed and recorded as T1+ T2+ T3= T1; s4: and when the accumulated operation time T1 is greater than T2, controlling the diesel engine to keep the current output power, increasing the speed to three-quarter of the calibrated speed, continuously operating for T3 time, and S5: when the diesel engine runs for T3 time at three-quarter of the rated rotation speed, the diesel engine control system adjusts the diesel engine to the previous working point to continue running, so that the exhaust temperature of the diesel engine after combustion is improved, oil stains in an exhaust pipeline are combusted by the high temperature of the diesel engine, the oil stains accumulated in the exhaust pipeline are removed, and the problems of oil leakage of the exhaust pipeline and fire spraying at an outlet are solved.
The second embodiment is as follows:
s1: in the running process of the diesel engine, when the diesel engine runs under a certain low-load working condition; s2: the method comprises the steps that a diesel engine control system records the running time t1=5min, t2=10min and t3=5min of the diesel engine at a low-load working point; s3: the diesel engine control system records the running time of the low-load working points of T1, T2 and T3, and the running time is recorded as T1+ T2+ T3= T1=20min in a superposition mode; s4: when the time of the accumulated running time T1 is longer than T2=20min set by a diesel engine control system, controlling the diesel engine to keep the current output power, increasing the speed to three-quarter of a nominal speed, continuously running for T3=10min, and S5: when the diesel engine runs for 10min at three-quarter of the rated rotation speed, the diesel engine control system adjusts the diesel engine to the previous working point to continue running, so that the exhaust temperature of the diesel engine after combustion is improved, oil stains in an exhaust pipeline are combusted at high temperature, oil stains accumulated in the exhaust pipeline are removed, the problems of oil leakage of the exhaust pipeline and fire spraying at an outlet are solved, and the normal running of the diesel engine is not influenced.
The third concrete embodiment:
s1: in the running process of the diesel engine, when the diesel engine runs under a certain low-load working condition; s2: the method comprises the steps that a diesel engine control system records the running time t1=5min, t2=10min and t3=5min of the diesel engine at a low-load working point; s3: the diesel engine control system records the running time of the low-load working points of T1, T2 and T3, and the running time is recorded as T1+ T2+ T3= T1=20min in a superposition mode; s4: when the time of the accumulated running time T1 is longer than T2=20min set by a diesel engine control system, controlling the diesel engine to keep the current output power, increasing the speed to three-quarter of a nominal speed, continuously running for T3=10min, and S5: when the diesel engine runs for 10min at the three-quarter calibrated rotating speed, the diesel engine control system adjusts the diesel engine to the previous working condition point to continue running, and the running time t1=10min, t2=5min and t3=5min of the diesel engine at the low-load working condition point are recorded again through the diesel engine control system; s3: the diesel engine control system records the running time of the low-load working points of T1, T2 and T3, and the running time is recorded as T1+ T2+ T3= T1=30min in a superposition mode; s4: when the accumulated operation time is longer than T2=20min set by a diesel engine control system, controlling the diesel engine to keep the current output power, increasing the rotating speed to three-quarter of a nominal rotating speed, continuously operating for T3=10min, and S5: when the diesel engine runs for 10min at three-quarter of the rated rotation speed, the diesel engine control system adjusts the diesel engine to the previous working point to continue running, so that the exhaust temperature of the diesel engine after combustion is improved, oil stains in an exhaust pipeline of the diesel engine are combusted at high temperature, the oil stains accumulated in the exhaust pipeline are removed, the problems of oil leakage of the exhaust pipeline and fire spraying at an outlet are solved, and the normal running of the diesel engine is not influenced.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. A diesel engine control method for an internal combustion locomotive comprises the following steps: s1: in the operation process of the diesel engine, when the diesel engine operates at a certain low-load working condition point; s2: the method comprises the following steps that a diesel engine control system records the running time of a diesel engine at a plurality of low-load working condition points; s3: the diesel engine control system counts the running time of all low-load working condition points, and the running time is superposed and recorded as T1; s4: and when the accumulated operation time T1 is greater than T2, controlling the diesel engine to keep the current output power, increasing the speed to three-quarter of the calibrated speed, continuously operating for T3 time, and S5: and when the diesel engine runs for T3 time at the three-quarter of the rated speed, the diesel engine control system adjusts the diesel engine to the previous working condition point to continue running.
2. The method as claimed in claim 1, wherein the low load operating point in step S2 is t1+ t2+ t3+. tn, where n is greater than or equal to 2.
3. The method for controlling the diesel engine of the diesel locomotive according to claim 2, wherein T1+ T2+ T3+. tn = T1; and n in tn is more than or equal to 2.
4. The method as claimed in claim 1, wherein T1 in step S3 is the sum of the operating times of all the low load operating points in step S2.
5. The method as claimed in claim 1, wherein in step S4, when T1 > T2, the current output power of the diesel engine is maintained and the speed is increased to three-quarters of the calibration speed.
6. The method as claimed in claim 1, wherein the step S4 is performed for a time T3, and the control system controls the diesel engine to return to the previous operating point.
7. The method as claimed in claim 1, wherein the step S5 is performed by suspending the step S5 when a change in the diesel power demand occurs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011030963.8A CN112145300A (en) | 2020-09-27 | 2020-09-27 | Diesel engine control method for diesel locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011030963.8A CN112145300A (en) | 2020-09-27 | 2020-09-27 | Diesel engine control method for diesel locomotive |
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| CN112145300A true CN112145300A (en) | 2020-12-29 |
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| CN202011030963.8A Pending CN112145300A (en) | 2020-09-27 | 2020-09-27 | Diesel engine control method for diesel locomotive |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387245A (en) * | 2017-08-15 | 2017-11-24 | 中车大连机车车辆有限公司 | Diesel engine of locomotive underrun part cylinder deactivation control method |
| CN107489579A (en) * | 2016-06-13 | 2017-12-19 | 福特环球技术公司 | Engine control and system |
-
2020
- 2020-09-27 CN CN202011030963.8A patent/CN112145300A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489579A (en) * | 2016-06-13 | 2017-12-19 | 福特环球技术公司 | Engine control and system |
| CN107387245A (en) * | 2017-08-15 | 2017-11-24 | 中车大连机车车辆有限公司 | Diesel engine of locomotive underrun part cylinder deactivation control method |
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Application publication date: 20201229 |
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