JP2016023930A - Engine control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an engine control system that, in a vehicle mounted with more than one engine, reduces the time taken to conduct an operation checkup test and the number of man-hours involved for the engines, enhances the efficiency of the checkup work, and detects any engine fault that cannot be extracted in an operation checkup test of a single engine.SOLUTION: An engine control system is equipped with: an electric power supply unit formed of engines and generators each driven by an engine to generate electric power; an electric power converting unit that converts the power generated by the generators; an electric power intercepting unit that intercepts connection between the electric power supply unit and the electric power converting unit; a drive control unit that controls the electric power supply unit and the electric power converting unit; a main electric motor for running use driven by the converted power from the electric power converting unit; and a vehicle control unit that controls the running of the vehicle. The system can operate in a running mode in which the main motor is driven with power generated by one of the generators driven by an engine or in a testing mode in which the connection between the generators and the electric power converting unit is intercepted by the electric power intercepting unit and an operation checkup test of the engine is executed.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an engine control system.

Generally, the following two methods can be cited as a power source for running a railway vehicle.
(1) A method of supplying electric power from a power generation facility on the ground side to a vehicle through a power supply facility such as an overhead wire (for example, Patent Document 1)
(2) A method of mounting an engine or the like that operates on liquid fuel in a vehicle (for example, described in Patent Document 2)
It is. In the electrified section, the above method (1) is used, but in the non-electrified section, the latter method (2) is generally used.

  When the method (2) is used, it is necessary to perform an operation check test to check whether the engine is operating normally in the pre-operation check at the vehicle depot and the engine operation check at the time of maintenance. Don't be.

  As an example of the engine operation check test, there is a test method for checking the operation by rotating the engine as described in Patent Document 2 and comparing information between the actual rotation speed at that time and the given rotation speed. As a conventional operation check test method, each time a test is performed, the engine test switch board is connected to the engine control digital input wiring, the engine is started / stopped by the button operation of the switch board, and the tester wants to measure the rotation. A manual test is mainly performed to give a number (notch) to the engine and confirm its behavior.

Japanese Patent Publication No. 2005-27447 Japanese Published Patent No. 7-286940

  As described in the background art above, when performing an operation check test of a conventional engine, the engine test switch panel is connected to the engine control digital input wiring every time the test is performed, and the engine start / It was common to select stop and notch (rotation speed) and check engine behavior (operating state).

  However, in the case of a vehicle organization having a vehicle equipped with a plurality of engines in one organization, the above-mentioned manual test must be performed for each vehicle equipped with an engine, and it takes a lot of time to prepare an operation test. However, there is a problem that it is difficult to perform the test simply. Further, it is necessary to connect an engine test switch panel for performing the test at the time of the test, and there is a problem that the working time is further increased.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is an engine that cannot be extracted by a single engine operation confirmation test in a vehicle equipped with one or more engines in order to shorten the test time of the engine operation confirmation test, reduce the work man-hours, and improve the work efficiency. It is to provide an engine control system for detecting a defect / failure of the engine.

  As means for solving the problems, an engine control system according to an embodiment of the present invention includes an engine and a generator that controls one or more engines of one or more vehicles and generates electric power by driving the engine. The power supply unit, the power conversion unit that converts the power generated by the generator, the power cutoff unit that cuts off the connection between the power supply unit and the power conversion unit, and the power supply unit and the power conversion unit A driving control unit, a driving main motor driven by the converted electric power from the power conversion unit, and a vehicle control unit for controlling the traveling of the vehicle, the electric power generated by the generator by driving the engine or the vehicle There are a running mode in which the main motor is driven by power supplied from the outside, and a test mode in which the power supply between the generator and the power conversion means is cut off by the power cut-off unit, and an engine operation check test is executed.

  In the engine control system of one embodiment of the present invention, the test time can be shortened and the efficiency can be improved. Problems, configurations, and effects other than those described above will become apparent from the following description of embodiments.

FIG. 1 is a diagram showing a device configuration in an engine control system. FIG. 2 is a diagram showing a device configuration when the engine operation check test is performed. FIG. 3 is a diagram illustrating a device configuration when an engine operation confirmation test is performed in a specific vehicle. FIG. 4 is a block diagram illustrating functions according to operation modes. FIG. 5 is a flowchart showing the operation of the engine operation check test. FIG. 6 is a time chart showing the operation of the engine operation check test.

  Hereinafter, embodiments will be described with reference to the drawings. Each element, such as an engine or a generator, can be identified by a number or the like, but other types of identification information such as a name may be used as long as each element can be identified. In the drawings and description of the present embodiment, the same reference numerals are given to the same parts. However, the present invention is not limited to the present embodiment, and any application examples that meet the idea of the present invention can be applied. Included in the scope. Further, unless specifically limited, each component may be plural or singular.

  In the description of the embodiment of the present invention, a vehicle using a device configuration that supplies power to the power conversion means by a self-power source is taken as an example, but a vehicle using a device configuration that switches the power source depending on the electrified / non-electrified section. It is possible to target all vehicles having one or more engines in the vehicle organization. Examples of vehicles include land vehicles such as railways, automobiles (hybrid cars), forklift cars, shovel cars, and crane cars, but also aircraft such as Cessna and jet aircraft, and marine vessels such as fishing boats and passenger ships. .

<Engine control system equipment configuration>
FIG. 1 is a diagram showing a device configuration in an engine control system. Vehicles A, B, C, and D are part of the vehicles that make up the vehicle formation. Although not specifically shown in the figure, in reality, it also has a power source as a starter for starting the operation of the engine of each vehicle described later. The power source is assumed to be supplied from petroleum fuel such as light oil, an in-vehicle battery, and an external power source, but is not limited thereto. Since one vehicle can be equipped with one or more engines, two engines (active engine and standby engine) are provided, and the standby engine is operated when the active engine fails. Thus, the operating rate of vehicle travel can be increased.

  Hereinafter, the structure of the apparatus mounted in each vehicle of vehicle A, B, C, D is demonstrated. First, the device configuration of the vehicle A will be described. The vehicle A includes a vehicle information management system 11, a cab console 12, and information transmission means 13. The vehicle information management system 11 also has a role of supervising all the controls and systems of vehicles in one train.

  The information control device 26/36/46 of each vehicle mounted on the vehicles B, C and D and the vehicle information management system 11 of the vehicle A are connected by information transmission means 13/28/38/48. Although not shown, the configuration of the vehicle information management system 11 includes a CPU, a volatile memory, a non-volatile memory, an input device such as a button / touch panel / keyboard, an output device such as a display / speaker / light, and an information transmission means 13. Consists of a communication interface for connection.

  As described above, the vehicle information management system 11 has a touch panel display or a button-equipped display as an input / output device. A tester operates a touch panel or a button, and the vehicle information management system 11 receives the operation information. With the operation information, the vehicle information management system 11 instructs the information control device 26/36/46, which will be described later, to switch to the normal driving mode or the test mode, the test conditions when switching to the test mode, Instructions for test execution can be given. Further, a similar instruction is transmitted from the information control device 26/36/46 to the drive system control device 27/37/47, and each vehicle B / C / D executes the test instructed by the vehicle information management system 11. can do.

  The cab console 12 is a device used when starting the engine and operating the entire drive system. The cab console 12 receives an instruction from the tester, and the information control device 26/36/46 and the drive system control device 27/37/47 of each vehicle B / C / D drive according to the received instruction. The system (for example, the power supply means 23, the power conversion means 24, the main motor 25) is operated. Incidentally, the operation of the drive system mainly indicates notching operations such as power running and regenerative operation.

  When the tester performs a notch operation on the cab console 12, the cab console 12 receives an instruction (notch operation information). The cab console 12 transmits the received instruction to the drive system (the power supply means 23, the power conversion means 24, the main motor 25), and moves the engine at a rotational speed corresponding to the instruction (notch operation information).

  After the vehicle information management system 11 accepts the test mode selected by the tester, when the vehicle information management system 11 recognizes that the test start button for starting the engine operation check test is pressed, the vehicle information management system 11 operates. The reception of these operations by the console console 12 is prohibited.

  When the vehicle information management system 11 recognizes that the test mode is selected, the vehicle information management system 11 starts the engine operation check test by driving the engine of each vehicle according to the test method and test conditions. However, it is also assumed that after the start of the engine operation confirmation test, a situation in which the engine operation confirmation test must be terminated during the test is caused by some factor. Therefore, the engine emergency stop button (not shown) of the cab console 12 for emergency stop of the engine can be operated even after the test mode is selected.

  Further, in this cab console 12, the vehicle information management system 11 has the function of the cab console 12, and only the vehicle information management system 11 can operate in the normal mode (running mode) or the test mode. Therefore, the configuration of the vehicle A can be simplified.

  Next, the equipment configuration of the vehicle B will be described. The vehicle B includes an engine 21, a generator 22, a power supply unit 23 including the engine 21 and the generator 22, a power conversion unit 24, a power cutoff unit 29, a main motor 25, an information control device 26, and a drive system control device 27. Each device of the information transmission means 28 is provided. The vehicle C and the vehicle D have the same device configuration as the vehicle B.

  The engine 21 has a power source as a starter for starting operation as described above, and is started by the power source. The generator 22 generates power with the rotational force of the engine 21 and outputs electric power. The power output from the generator 22 is supplied from the power supply means 23 to the power conversion means 24. The power conversion means 24 includes power conversion means such as a converter device (CNV241 / 341/441) for converting AC power to DC power, and an inverter device (INV242 / 342/442) for converting DC power to AC power. It is the main component.

  The power conversion means 24 is equipment necessary for the operation of the vehicle, and it is important to supply stable power to the power conversion means 24 in order to transport passengers safely and comfortably. For this reason, it is indispensable to perform an engine operation confirmation test for confirming whether the engine 21 operates correctly. Moreover, the power supply to the power conversion means 24 can also be performed from the outside of the vehicle. This is because, as described above, in the electrified section, the power conversion means 24 receives power supply from the outside of the vehicle and the vehicle travels.

  The main motor 25 is driven by the electric power output from the power conversion means 24 and drives a wheel shaft (not shown) via a power transmission means (not shown) to accelerate / decelerate the vehicle. give. The information control device 26 gives a control command to the drive system control device 27 and collects status information and the like in the drive system control device 27. This state information includes the number of revolutions of the engine and the time required to reach the number of revolutions, but is not limited thereto.

  The drive system control device 27 switches the usage method of the engine 21 in accordance with a control command from the information control device 26. In this embodiment, there are two types of usage methods, a travel mode (normal mode) and a test mode, but the present invention is not limited to this. That is, the drive system control device 27 can be switched to various usage methods other than the travel mode (normal mode) and the test mode. When the traveling mode is selected in the switching of the usage method of the engine, the connection between the generator 22 and the power conversion means 24 is in the state shown in FIG.

  The engine control system in the present embodiment includes a vehicle information management system 11, a cab console 12, information transmission means 13/28/38/48, an information control device 26/36/46, and a drive system control device 27/37 /. 47, composed of an engine 21/31/41.

<Equipment configuration 1 during engine operation test>
FIG. 2 is a diagram showing a device configuration when the engine operation check test is performed. As shown in FIG. 2, when the vehicle information management system 11 accepts the selection of the test mode, the connection between the power supply means 23 including the generator 22 and the power conversion means 24 is mechanically changed by the power cutoff means 29. The electric power that is electrically disconnected (cut off) and generated by the generator 22 is not supplied to the power conversion means 24. Thereby, according to the test condition instruct | indicated by the vehicle information management system 11, it becomes possible to operate the engine 21/31/41 and to perform an operation confirmation test.

  As described above, in this embodiment, it is possible to perform the test only by switching between the running mode and the test mode, and it is possible to eliminate the need to install test equipment such as a test engine switch test panel.

  The information control device 26 is connected to the vehicle information management system 11 of the adjacent vehicle A and the information control device 36 installed in the vehicle C via the information transmission means 13 and the information transmission means 28 and 38. Similarly, the information control device 36 and the information control device 46 installed in the vehicle D are also connected via information transmission means 38 and 48. As a result, the vehicle information management system 11 of the vehicle A passes through the information transmission means 13/28/38/48 to the information control device 26/36 / of the other vehicle (vehicle B / C / D) in one train. 46 information can be acquired, and information can be shared between vehicles.

  That is, the drive system control device 27/37/47 in one train (vehicle B / C / D) can be freely operated by operating the touch panel display of the vehicle information management system 11 of the vehicle A or the button attached to the display. It has a structure that can be controlled easily.

  Thereby, in the engine operation confirmation test when the test mode is selected, the vehicle information management system 11 determines the selection of the engine to be tested, the test method, and the test conditions to be given to each engine at the time of testing in the engine in one train. A predetermined operation test can be executed. In addition, the vehicle information management system 11 can test all engines in one train for the engine to be tested, and can test one engine or two or more engines. You can also. Furthermore, the vehicle information management system 11 can select only a specific engine as a test target engine. An example thereof will be described with reference to FIG.

<Equipment configuration 2 during engine operation test>
FIG. 3 is a diagram illustrating a device configuration when an engine operation confirmation test is performed in a specific vehicle. As shown in FIG. 3, the vehicle information management system 11 can perform an engine operation test for only an engine (an engine of a specific vehicle) that the tester wants to test. In this example, the operation test of the engine 21 in the vehicle B will be described as an example, but the operation test of the engine 31 of the vehicle C to the engine 41 of the vehicle D is the same.

  The vehicle information management system 11 can also select various test methods. For example, the vehicle information management system 11 can select a method in which all the engines to be tested are tested at the same time, a method in which a time difference is provided, and a method in which tests are performed one by one. Regarding the setting of the test conditions, it is possible to perform a test with the same rotational speed pattern on all the engines to be tested, and it is also possible to perform a test with a different rotational speed pattern on each engine.

  The result of the test carried out by the engine 21 in the composition is transmitted to the vehicle information management system 11 via the information transmission means 28 and the information transmission means 13. Thereby, the vehicle information management system 11 displays the result of the engine operation test on its own display or the like so that the tester can perform comparison and examination.

  In addition, the vehicle information management system 11 stores a determination pattern created in advance in its own nonvolatile memory (not shown), and sets test conditions so that the test result of each engine and the determination pattern are automatically compared. The comparison result can be displayed on a display or the like. Thus, the tester can easily set the test conditions, and has an effect that it is easy to determine normality / abnormality by automatic determination of the test result.

  That is, according to the present embodiment, the tester can perform a series of operations from the operation check test of the engine to be tested to the confirmation of the test result by operating only the vehicle information management system 11. As a result, it is possible to reduce the labor and time required for the engine operation confirmation test, and it is possible to perform an efficient engine operation confirmation test.

  The vehicle C adjacent to the vehicle B and the vehicle D adjacent to the vehicle C also have the same device configuration as the vehicle B. The information control devices 26/36/46 of each vehicle are connected by the information transmission means 13/28/38/48, and the vehicle information management system 11 of the vehicle A collectively performs the engine operation test in each vehicle. The configuration can be controlled.

  In this figure, as an example, four vehicles A, B, C, and D are shown. However, the number of vehicles having the device configuration of vehicles B, C, and D can be increased or decreased. Further, in the figure, a configuration is shown in which one information control device 26 controls one drive system control device 27, power supply means 23 (engine 21 and generator 22), and power conversion means 24. ing. Note that even if one information control device controls a plurality of drive system control devices, engines, generators, and power conversion means, the vehicle information management system 11 can also control them. Therefore, it is possible to perform an operation test with a plurality of engines under the test conditions instructed by the vehicle information management system 11.

  Moreover, although the example which implemented the operation test only of the engine of the vehicle B was demonstrated, for example, the vehicle information management system 11 performs the engine operation test in parallel with the engine of the vehicle B and the engine of the vehicle C according to the transmitted test conditions. Can be implemented. Similarly, the vehicle information management system 11 can also perform an engine operation test with a combination of the engine of the vehicle B and the engine of the vehicle D, and an engine operation test with a combination of the engine of the vehicle C and the engine of the vehicle D. is there. By performing an engine operation test with such a vehicle engine combination, it is possible to detect abnormalities (abnormal noise, vibration, resonance, rapid temperature rise, etc.) that do not occur in the operation test of the engine alone.

  Furthermore, even when a plurality of engines are mounted on one vehicle, the engine operation test can be executed one by one, or the engine operation test can be executed in parallel by combining two engines. Further, when three or more engines are provided in the vehicle, it is possible to detect an abnormality by executing an engine operation test with a combination of the two.

<Functional block by operation mode>
FIG. 4 is a block diagram illustrating functions according to operation modes. First, the tester performs a mode selection between the normal mode (running mode) and the test mode according to the present embodiment by using the touch panel display included in the vehicle information management system 11 or a button attached to the display. The vehicle information management system 11 receives mode information. The vehicle information management system 11 determines whether the mode information received in S401 is a test mode. When it is in the test mode (YES), the vehicle information management system 11 executes the process of S41 after confirming that the power interruption has been completed in S402. When it is not the test mode (NO), the vehicle information management system 11 determines that the selected mode is the travel mode (normal mode), and executes the process of S42.

<Operation in travel mode>
Next, the operation S42 in the traveling mode will be described. In S421, the tester performs a notch operation, and the vehicle information management system 11 receives the notch operation result. In S422, the vehicle information management system 11 starts the engine 21/31/41 and rotates it at a predetermined number of revolutions after idling. At this time, the generator 22/32/42 connected to the engine 21/31/41 also starts rotating and starts generating power. In S423, the electric power generated by the generator 22/32/42 is converted into electric power of a predetermined frequency and voltage by the power conversion means 24/34/44 and supplied to the main motor 25/35/45. The main motor 25/35/45 starts rotating with the supplied electric power, transmits the rotational force to the wheel shaft, moves the wheel, and runs the vehicle A / B / C / D. The above is the operation in the travel mode.

<Operation in test mode>
Next, the operation S41 in the test mode (engine operation confirmation test mode) will be described.
In S411, the vehicle information management system 11 receives the test vehicle information selected by the tester.
In S412, the vehicle information management system 11 receives the test method set by the tester.
In S413, the vehicle information management system 11 receives the test conditions set by the tester.
In S414, the vehicle information management system 11 transmits an engine operation instruction to the drive system control device of the selected test vehicle (for example, the drive system control device 27 of the vehicle B).
In S415, the drive system control device 27 activates the engine 21 to operate (empty) with a predetermined rotation speed pattern.
In S416, the drive system control device 27 measures the operating state of the engine 21 to be tested. Then, the drive system control device 27 transmits the measurement result to the vehicle information management system 11 via the information control device 26.
In S417, the vehicle information management system 11 determines whether the engine 21 is normal or abnormal from the received measurement result.
The detailed operation will be described below.

When the test mode is selected, the vehicle information management system 11 notifies the tester that the test state has been reached, using its own display or lamp. A specific notification method is, for example, display on the display of “test mode”. When the test mode is selected, the tester subsequently selects an engine to be tested, and the vehicle information management system 11 receives the selection result. In addition, there exist the following patterns (11) thru | or (12) as a selection pattern of the engine which implements an engine operation test.
(11) All engines in the train (12) Only the engine selected by the tester (engine of a specific vehicle)

Next, the tester selects an operation test method for the engine of the vehicle selected as the test target, and the vehicle information management system 11 receives the selection result. As a test method, there are the following patterns (21) to (22).
(21) A method for simultaneously testing a test target engine in a batch (22) A method for testing a test target engine in a plurality of times with a time difference.

Each pattern of the above test method has the following merits.
(31) With the test method for all engines at once, it is possible to perform the operation test of all engines in the same time as the test time for one unit, compared to the case where all engines are tested for operation. The engine operation test time can be shortened.
(32) In the method of performing the test divided into multiple times with a time difference, the suppression of a sudden load on the vehicle-mounted battery and the external power source necessary for driving each engine and the reduction of noise are intended. Can do.

Next, as a test condition given to the engine, the tester sets the engine speed pattern, and the vehicle information management system 11 receives the setting result. This rotational speed pattern setting is used by the tester to select how many rotational speeds the engine is to be rotated, and the vehicle information management system 11 has the following settings (from (41) to (44)). To do. Here, an operation test of the engine 21 of the vehicle B is performed. The vehicle information management system 11 receives the result set on the display, and the vehicle information management system 11 controls the drive system control device 27 via the information control device 26 so as to rotate the engine 21 to be tested at a predetermined rotational speed. .
(41) The drive system control device 27 causes the engine 21 in the idling state to increase (or decrease) the rotational speed at an acceleration / deceleration YYYrpm / sec with XXXrpm (revolution per minute) as a target rotational speed.
(42) After reaching the rotational speed XXXrpm, the drive system control device 27 maintains the rotational speed XXXrpm for WW seconds.
(43) After the above (42), the drive system control device 27 sets AAArpm as the target rotational speed and changes the rotational speed at BBBrpm / sec.
(44) After reaching the rotational speed AAArpm, the drive system control device 27 maintains the rotational speed AAArpm for CC seconds.

That's it. The tester performs numerical setting on the cab console 12 with respect to the above-described alphabetic parts (41) to (44), and the cab console 12 accepts the numerical setting result, and the vehicle information management system 11 Send. Also, as (41) and (42), (43) and (44),
(A) Predetermined target rotational speed (b) Acceleration / deceleration to reach the target rotational speed (c) Time for maintaining the target rotational speed (seconds)
These three items are used as one rotational speed pattern.

In addition, although setting of (41) and (42) is indispensable, (43) and (44) are not set, and the vehicle information management system 11 does not perform the rotation test of (43) and (44). Is also possible. Further, after (43) and (44), the vehicle information management system 11 sets one or more new rotation speed patterns as (45), (46), or (47), (48), Many engine speed patterns can be applied to the engine. Furthermore, the tester can set the generated determination pattern simultaneously with the setting of the test condition in the vehicle information management system 11. The vehicle information management system 11 receives the test condition and the determination pattern, performs a predetermined engine operation test under the received test condition, compares the test result with the determination pattern, and determines whether there is a problem in the engine 21 to be tested. As an example of the judgment pattern,
(51) Is the engine speed at idling the expected engine speed ± 5 rpm? (52) Is the time to reach the target engine speed as specified? (53) The engine speed after reaching the target engine speed is There is, for example, whether the target rotational speed is ± 5 rpm, but is not limited thereto. For example, one or more temperature sensors may be installed in the engine 21 and the surface temperature of the engine 21 may be measured to detect an abnormality such as an abnormally high temperature or a rapid temperature increase. It is also possible to install one or more vibration sensors in the engine 21 itself or in the vicinity thereof to detect abnormal vibration of the engine 21 itself, vibration propagation to the vehicle, resonance, and the like. In addition, an apparatus for detecting sound such as a microphone can be installed to detect abnormal noise and noise. Further, by installing a gas detector or an odor sensor, it is possible to detect a fuel leak with the gas detector or detect an odor with the odor sensor. An engine failure can be detected by comparing the above detection result with the determination pattern.

  As described above, the result of the engine operation check test can be confirmed by setting the determination pattern and comparing it with the test result using the determination pattern. Further, by adding the factors such as temperature, vibration, and noise to the determination pattern, the abnormality in the engine 21 or the vehicle equipped with the engine 21 can be detected in detail.

  The vehicle information management system 11 prepares in advance a pattern table storing a plurality of test condition patterns based on the set numerical information, and the tester can select the test conditions using the pattern table. In addition, the test conditions can be set easily and efficiently. As a result, the test information can be easily set by selecting a pattern that the tester wants to perform in the vehicle information management system 11 and receiving the selected pattern in the vehicle information management system 11. Furthermore, in the vehicle information management system 11, it is possible to give different test conditions for each engine to be tested and to perform different tests on each engine.

  After performing the above settings, the vehicle information management system 11 transmits an engine start instruction to the drive system control device 27 and starts (starts) the engine. A starter is used for start-up (start-up), and there are starters that operate with petroleum fuel such as light oil, those that operate with an onboard battery, and those that operate with external power. When starting (starting) the engine, the tester presses a startup button attached to the cab console 12. When the cab console 12 detects pressing of the button, the cab console 12 transmits the detection result to the vehicle information management system 11. As described above, the vehicle information management system 11 starts starting the test target engine of the selected vehicle.

  The tester confirms that all selected engines to be tested have been started and are idling. After the confirmation, the tester presses the engine test mode button of the vehicle information management system 11, and the vehicle information management system 11 recognizes the pressed state. Thereafter, the vehicle information management system 11 transmits an operation command to the engine system control device of each vehicle to start an engine operation test. Note that if all the engines to be tested are not in an idling state, the test cannot be performed, and the vehicle information management system 11 receives an instruction to start a test by pressing the engine test mode button. Absent.

  The rotational speed of the engine that has rotated in the rotational speed pattern according to the engine rotational speed command is measured by a rotational speed measuring device (not shown) attached to the engine, and the measurement information includes the drive system control device and information of each vehicle. The information is transmitted to the control device and transmitted to the vehicle information management system 11 through the information transmission means. The vehicle information management system 11 displays the received measurement result on its own display and informs the tester of the content of the test result.

  Thereafter, the actual engine speed measured by the speed measuring device is compared and determined. As a comparison / determination method, a means for visually judging by a tester, a means for generating a determination pattern when setting test conditions, and a means for making a determination by comparing the determination pattern with a test result in the vehicle information management system 11 A means for extracting an abnormal engine by comparing the test results of each engine can be considered. In addition, the determination result by comparison with the determination pattern produced | generated previously is displayed on the display of the vehicle information management system 11, and a tester can confirm whether the operation | movement of an engine is normal or abnormal.

  When the engine operation test according to the set rotation speed pattern ends, the vehicle information management system 11 displays the end of the operation test on the display. Thereby, the tester can recognize that the engine operation test has been completed. If the engine operation test is performed for all the engines of the vehicle all at once or only for the engine of one vehicle, the test ends here. However, when the engine of a plurality of vehicles is set to execute the engine operation test with a time difference for each engine of the vehicle, the engine operation test is performed on the engine of the vehicle next to the vehicle for which the operation test has been completed. I do. Then, the engine operation test for each vehicle is repeatedly executed until the engine operation test for the engines of all selected vehicles is completed.

  After the tester confirms the end of the engine operation test, the tester presses the test mode button of the vehicle information management system 11 again. The vehicle information management system 11 accepts this pressing, and the engine automatically transitions from the test mode state to the idling state.

<Engine operation test>
FIG. 5 is a flowchart showing the operation of the engine operation check test. In the engine operation check test, the following operations (S501) to (S510) are performed. The engine to be tested is the engine 21 of the vehicle B.

(S501)
First, as a rotational speed pattern, the target rotational speed XXXrpm, YYYrpm / sec for increasing / decreasing the rotational speed, time WW seconds for maintaining the rotational speed XXXrpm, judgment criteria (target arrival time, target rotational speed tolerance) 4 Set the item. Further, the number N of the rotation speed patterns is also set by the tester. The vehicle information management system 11 receives the set rotation speed pattern and the number N of rotation speed patterns.
(S502)
The vehicle information management system 11 sets “1” to “X” of the rotation speed pattern X to be executed. That is, an engine operation test for the engine 21 is executed with the rotation speed pattern 1.

(S503)
The vehicle information management system 11 targets the drive system control device 27 of the vehicle B for the set rotational speed, and changes the engine rotational speed under the set conditions. XXX rpm, YYY rpm / sec for increasing / decreasing the rotational speed, time WW seconds for maintaining the rotational speed XXX rpm, and determination criteria) are transmitted. The drive system control device 27 controls the engine 21 to have a target rotational speed XXXrpm and increase the rotational speed at YYYrpm / sec.

(S504)
When the rotational speed of the engine 21 reaches the target rotational speed XXXrpm, the drive system control device 27 performs the first determination. In the first determination, the drive system control device 27 compares the time considered to reach the target rotational speed with the time actually reached the target rotational speed, and determines whether it is within the allowable range. That is, the drive system control device 27 determines whether or not the target rotational speed XXXrpm has been reached in XXX / YYY seconds. If it has reached (YES), the drive system control device 27 executes S505, and if it has not reached (NO), it executes S507.

(S505)
Next, the drive system control device 27 performs a second determination. In the second determination, the drive system control device 27 determines whether the rotational speed is stable within an allowable range (target rotational speed XXXrpm ± ZZ%). If stable (YES), the drive system control device 27 executes S506, and if not stable (NO), executes S507. In the second determination, it is also possible to determine whether the time during which the rotational speed is stable within the allowable range (target rotational speed XXXrpm ± ZZ%) is maintained for a preset number of seconds (WW seconds).

(S506)
The drive system control device 27 determines that the operation test for the engine 21 with the rotation speed pattern 1 has been completed normally.
(S507)
The drive system control device 27 determines that an abnormality has been found in the operation test for the engine 21 with the rotation speed pattern 1.

(S508)
The drive system control device 27 transmits the engine operation test result (normal or abnormal) to the vehicle information management system 11 using the information control device 26, the information transmission means 28, and the information transmission means 13.
(S509)
The drive system control device 27 determines whether the rotation speed pattern X for which the operation test has been completed is the rotation speed pattern N (the number N of rotation speed patterns). If the rotational speed pattern X is the rotational speed pattern N (YES), the drive system control device 27 completes the engine operation test and transmits a completion notification to the vehicle information management system 11. If the rotational speed pattern X is not the rotational speed pattern N (NO), the drive system control device 27 increases X by 1 (X = X + 1) in order to execute the engine operation test with the next rotational speed pattern (S510). ). The drive system control device 27 performs the above operation until the engine operation test at the rotation speed pattern N is completed.

  As described above, it is possible to execute various tests on the engine to be tested only with an instruction from the vehicle information management system 11, and to automatically determine whether the test result is normal or abnormal. Can do. Therefore, the test time can be shortened and the efficiency can be improved.

  FIG. 6 is a time chart showing the operation of the engine operation check test. In addition to the description in FIG. 4 and FIG. 5, a more detailed operation will be described.

  First, the control power supply is turned on by pressing the control power on button of the operation console 12 (the voltage of the control power supply rises from 0 volts to a predetermined voltage). When the control power is turned on, the power of the control device of each vehicle is turned on. Next, the preheat start (Manual Preheat Start) button of the vehicle information management system 11 is pressed. As a result, preheating of the engine is started. Preheating is to increase the temperature of the engine in advance and make it easier to start the engine. After all the preheating in the formation is completed, the tester sets test conditions such as selection of a vehicle to be tested in the vehicle information management system 11, and the vehicle information management system 11 accepts the setting information.

  After the setting of the test conditions is completed, when the startup (Start Up) button of the cab console 12 is pressed and the vehicle information management system 11 accepts the pressed state, the engine of the test target vehicle is started. When the tester confirms that all the engines to be tested are in the idling state, the tester presses the test mode button of the vehicle information management system 11. When the vehicle information management system 11 accepts the pressed state, the vehicle information management system 11 instructs the drive system control device 27 to start an engine operation confirmation test. Receiving the instruction, the drive system control device 27 starts an engine operation test for the instructed engine.

  When the engine operation test is started, the drive system control device 27 controls the engine according to a preset rotation speed pattern (pattern 1 to pattern 5 in the drawing) (engine rotation speed command). To automatically increase or decrease the rotational speed. When the test is completed for all the set rotation speed patterns, the engine automatically transitions to the idle state. If the tests for all the vehicles' engines are set all at once or only the engine for one vehicle is set, the test is completed when the engine is shifted to the idle state. However, when testing a plurality of vehicle engines with a time difference for each vehicle engine, a similar engine operation test is performed on the next vehicle engine.

  After confirming that all the test target vehicles have been tested and all the engines are in an idle state, when the test mode button of the vehicle information management system 11 is pressed again, before the engine operation confirmation test is started. Transition to the state. The above is the flow of the operation from the start of the engine to the end of the engine operation test.

Instead of applying the same engine speed pattern to the engine of each vehicle and executing the engine operation test, it is possible to apply the engine speed test differently as follows and perform the operation test on all the engines simultaneously.
-Vehicle B: Test in order of pattern 1, pattern 2, pattern 3, pattern 4, pattern 5-Vehicle C: Test in order of pattern 2, pattern 3, pattern 4, pattern 5, pattern 1-Vehicle D: Pattern 3 Test in the order of pattern 4, pattern 5, pattern 1, pattern 2 By rotating each engine with a different rotational speed pattern, special abnormalities such as resonance and abnormal temperature rise can be detected.

  As described above, in the engine control system of the present embodiment, various tests can be executed on the engine to be tested only by an instruction from the vehicle information management system 11, and the test result is normal or abnormal. Can be automatically determined. Therefore, the test time can be shortened and the efficiency can be improved.

In addition, this invention is not limited to an above-described Example, Various modifications are included.
The above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment. Each of the above-described configurations, functions, processing units, processing means, and the like may be realized by hardware by designing a part or all of them with, for example, an integrated circuit. Each of the above-described configurations, functions, and the like may be realized by software by interpreting and executing a program that realizes each function by the processor.

  Information such as programs, tables, and files for realizing each function may be stored in a memory, a hard disk, a recording device such as an SSD (Solid State Drive), or a recording medium such as an IC card, an SD card, or a DVD. Further, the control lines and information lines indicate what is considered necessary for the explanation, and not all the control lines and information lines on the product are necessarily shown. Actually, it may be considered that almost all the components are connected to each other.

  11: Vehicle information management system, 12: Driver's cab console, 13, 28, 38, 48: Information transmission means, 21, 31, 32: Engine, 22, 32, 42: Generator, 23, 33, 43: Electric power Supply means, 24, 34, 44: Power conversion means, 25, 35, 45: Main motor, 26, 36, 46: Information control device, 27, 37, 47: Drive system control device, 29, 39, 49: Power Blocking means

Claims (9)

An engine control system for controlling one or more engines of one or more vehicles, the engine control system comprising:
An electric power supply unit composed of the engine and a generator that generates electric power by driving the engine;
A power converter that converts the power generated by the generator;
A power cut-off unit that cuts off the connection between the power supply unit and the power conversion unit;
A drive control unit for controlling the power supply unit and the power conversion unit;
A driving main motor driven by the converted electric power from the power conversion unit;
A vehicle control unit for controlling the traveling of the vehicle,
A driving mode in which the main motor is driven by power generated by the generator or by power supplied from outside the vehicle by driving the engine;
An engine control system comprising: a test mode in which power supply between the generator and the power conversion means is cut off by the power cut-off unit and an operation check test of the engine is executed. The engine control system according to claim 1, wherein when the vehicle control unit receives selection of the test mode, the vehicle control unit
The power supply from the generator to the power conversion unit is cut off by the power cut-off unit to the drive control unit, the vehicle is switched to the test mode, and an operation check test of the engine is executed. Engine control system. The engine control system according to claim 1,
The vehicle control unit receives test conditions for the engine, determination conditions for test results, and engine information of a test target.
An operation test is performed on the engine under test under the test conditions,
An engine control system comprising: comparing a test result of the operation test with a determination condition of the test result to determine whether the engine to be tested is normal or abnormal. The engine control system according to claim 3.
A test result determination pattern for determining a test result stored in advance in the vehicle control unit is compared with a test result of the operation test to determine whether the engine to be tested is normal or abnormal. Engine control system. 4. The engine control system according to claim 3, wherein the test condition maintains a target rotational speed of the engine, a rotational speed that is increased or decreased per unit time, an arrival time to the target rotational speed, and the target rotational speed. An engine control system comprising any one or more of time. 4. The engine control system according to claim 3, wherein the determination condition includes an allowable range of the target engine speed, an allowable range of time to reach the target engine speed, an allowable temperature range of the engine body, and an allowable vibration range. Any one or more of these. The engine control system characterized by the above-mentioned. The engine control system according to claim 1, wherein the engine operation test is simultaneously executed for all engines. The engine control system according to claim 1, wherein the engine operation test is executed with a time difference for each engine. The engine control system according to claim 5, wherein an engine operation check test is executed at a target rotational speed that is different for each engine.

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