JP3717082B2 - Engine output recording device for diesel vehicles - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an engine output recording device for a diesel vehicle.
[0002]
[Prior art]
There are several well-known methods for detecting the shaft output or shaft torque (hereinafter simply referred to as “engine output”) of a running diesel engine (hereinafter simply referred to as “engine”) in a railway diesel vehicle. For example, the power transmission torque is detected by a torque detector installed in a power transmission device such as a propulsion shaft, the power transmission torque, the power transmission efficiency from the engine output end to the torque detector, the gear ratio, and the engine rotation There is a method of detecting the engine output by calculating the engine output from the speed or the like. As a method for detecting the power transmission torque by the torque detector, for example, there is a method for detecting the torque by measuring the strain of the propulsion shaft by a strain gauge.
[0003]
[Problems to be solved by the invention]
Since the engine output detected by the above method is obtained while the diesel vehicle is traveling, the engine output is the engine output from which the power required for driving the auxiliary machinery has been subtracted. There are two types of auxiliary equipment. One is an auxiliary machine that is installed in the engine and is necessary for the operation of the engine, and is always driven by a part of the engine output. For example, a lubricating oil pump, a cooling water pump, and a fuel injection pump. The other is an auxiliary machine, such as an air compressor for obtaining compressed air used for opening and closing brakes, doors, etc., a cooling device for cooling engine cooling water, and a control device or electric light. A charging generator that generates electric power for charging the battery and charging the storage battery.
[0004]
A performance test method for a railway vehicle diesel engine in a stationary engine performance test apparatus is defined in JIS E 5303-1989 “Diesel Engine Test Method for Railway Vehicles”. Among these, the following are specified for engine auxiliary equipment. When performing a performance test, in principle, the former auxiliary equipment shall be installed in the test engine. When the former auxiliary machine is driven by another power source, the engine output is obtained by subtracting the power required for driving them from the measured output of the engine under test. When the test engine drives the latter auxiliary machine, the engine output is obtained by adding the power required for driving these auxiliary machines to the test engine. If the above regulations are to be applied to the measurement of engine output while a diesel vehicle is running, the power required to drive the latter auxiliary machine (hereinafter simply referred to as “auxiliary machine”) is measured at the same time as the engine output. By adding the power required for driving the auxiliary machine to the net output, which is the engine output with all the auxiliary equipment installed, the gross shaft output, which is the engine output with no auxiliary equipment installed, is added. Must be calculated. Conventionally, however, there is no engine output recording device that measures the gross shaft output of the engine in this way, and the engine output measured while the diesel vehicle is running is expected to have an error corresponding to the maximum power required for driving all the auxiliary machines. I had to. Therefore, the measurement accuracy of the engine output during traveling of the diesel vehicle is not good.
[0005]
When the cooling water temperature or the lubricating oil temperature changes, the engine output changes even if other conditions are constant. In general, the engine performance test apparatus includes means for adjusting these temperatures, and when measuring the engine output with the test apparatus, the engine performance test apparatus is set within a certain range, that is, in a standard state with respect to a certain reference temperature. Measure while adjusting these temperatures. While the diesel vehicle is traveling, it is difficult to keep these temperatures at the standard state. Therefore, the measurement accuracy of the engine output during traveling of the diesel vehicle is not good. When an engine inspection / repair operator tries to determine whether or not to perform engine overhaul and repair due to a decrease in engine output, the engine output measurement accuracy is not good and accurate determination cannot be made. there were.
[0006]
The present invention has been made in order to solve the above-mentioned problems, and the same output in a state in which no auxiliary machine is mounted from the output of the diesel engine in the state in which the auxiliary machine is obtained while the diesel vehicle is running. And an engine output recording device for a diesel vehicle that accurately measures the same output when the cooling water temperature or the lubricating oil temperature reaches a standard state. To do.
[0007]
[Means for Solving the Problems]
Invention relating to claim 1 includes a hand stage you detect the axial output or axial torque of the diesel engine, and hand stage you detect the rotational speed of the diesel engine, it is driven by the diesel engine, the cooling fan, air compressor, charging generator, and a engine output recording apparatus used in a diesel vehicle and a hand stage you detect the power required to drive the respective auxiliary heating and cooling device,
The hand stage that records the detection result of each detection means during running of the diesel vehicle, the diesel vehicle is traveling, the cooling fan on the basis of the recording of the pre-crisis record unit, an air compressor, charging generator The power required for driving each auxiliary machine of the engine and the air conditioning unit is added to calculate the auxiliary driving force or auxiliary driving torque, and the auxiliary driving force or auxiliary driving is calculated based on the shaft output or axial torque of the diesel engine. by adding the torque, the auxiliary machine out calculate the axial output or axial torque of the diesel engine in a state where not mounted, and recording to means and an equipped engine output record of the diesel vehicle, characterized in Rukoto The apparatus is intended to solve the above problem.
[0008]
Invention is used in a diesel vehicle comprising a hand stage you detect the axial output or axial torque of the diesel engine, and hand stage you detect the cooling water temperature or the lubricating oil temperature of the diesel engine, the control apparatus according to the 2 An engine output recording device,
Hand stage that records the detection result of each detection means during traveling of the diesel vehicle, the in diesel vehicle is traveling, before Kiki recording means records the pre-cooling water temperature or the lubricating oil temperature based on the by multiplying the correction coefficient that has been determined as a function in the axial output or axial torque of the diesel engine, the cooling water temperature or the lubricating oil temperature is out calculate the axial output or axial torque of the diesel engine at the normal state, and means for recording, by the engine output recording device for a diesel vehicle, characterized in Rukoto equipped with, it is intended to solve the problem.
[0009]
[Action]
The engine output during traveling of the diesel vehicle calculated from the power transmission torque detected by the torque detector installed in the power transmission device is deducted from the power required to drive auxiliary equipment such as the cooling device, air compressor, and charging generator. This is the so-called net axis output. These auxiliary machines are directly driven by the engine via an auxiliary machine drive shaft. Since the power required for driving the cooling device and the air compressor can be calculated from the engine rotation speed, this engine output recording device is based on on / off information of these auxiliary machines and the engine rotation speed. The power required to drive these auxiliary machines is calculated. Further, since the power required for driving the charging generator can be calculated from the engine rotational speed and the generated current, the engine output recording device calculates the power required for driving the charging generator from the engine rotational speed and the generated current. calculate. Further, the engine output recording apparatus calculates the power required for driving all the auxiliary machines by adding the power required for driving each auxiliary machine. Alternatively, the power required for driving the accessory may be calculated by directly detecting the power transmission torque of the accessory drive shaft. The engine output recording apparatus calculates and records the engine gross shaft output by adding the power required for driving the accessory and the net shaft output of the engine.
[0010]
In diesel vehicles, it is difficult to always maintain the engine coolant temperature and the lubricating oil temperature in the standard state during traveling. Based on these temperatures detected during traveling, the gross shaft output of the engine is in the standard state. It is necessary to correct the engine shaft output. For example, a value obtained by multiplying the gross shaft output of the engine by the correction coefficient is calculated and recorded as the engine shaft output in the standard state. However, this correction factor is obtained as a function of the coolant temperature and the lubricating oil temperature by conducting a performance test on the engine in advance.
[0011]
【Example】
FIG. 1 shows an embodiment of a device configuration when the present invention is applied to a railway diesel vehicle. The output of the engine 1 is transmitted to the driving wheel 4 via the transmission 2 which is a power transmission device and the propulsion shaft 3, and becomes the driving force of the diesel vehicle. The power transmission torque 6 is detected by a power transmission torque detector 5 installed on the propulsion shaft 3. The power transmission torque detector 5 includes, for example, a strain gauge. An engine rotational speed 8 is detected by an engine rotational speed detector 7 installed in the engine 1. Furthermore, the coolant temperature detector 9 installed in the engine 1 detects the coolant temperature 10, and the lubricant temperature detector 11 detects the lubricant temperature 12. Electric power is supplied to the auxiliary equipment of the railway diesel vehicle for the cooling device 13 for cooling the engine cooling water, the air compressor 14 for obtaining compressed air used for opening and closing the brakes and doors, etc. There is a charging generator 15 or the like that generates electric power for the purpose. These auxiliary machines are directly driven by the engine 1 via the auxiliary machine drive shaft 16. The cooling device 13 includes a cooling fan 17, a radiator 18, and a charge / discharge oil type fluid coupling 19. When the coolant temperature is high, the charge / discharge oil type fluid coupling 19 is filled with oil, so that the power from the auxiliary drive shaft 16 is transmitted to the cooling fan 17 via the charge / discharge oil type fluid coupling 19. Is turned on. The cooling air generated by the rotation of the cooling fan 17 passes through the radiator 18 so that the engine cooling water is cooled. If the cooling water temperature is low, the oil from the auxiliary drive shaft 16 is cut off by draining the charge / discharge oil type fluid coupling 19, and the rotation of the cooling fan 17 is turned off. Therefore, the cooling fan on / off information 20 is detected from the charge / discharge oil information of the charge / discharge oil type fluid coupling 19. The compressed air obtained by the air compressor 14 is sent to the air nose 22 through the air pipe 21. When the pressure of the air damage 22 decreases, the pressure regulator 23 is turned on (on), and the air compressor 14 performs an air compression operation. When the pressure of the air damage 22 increases, the pressure regulator 23 is turned off (off), and the air compressor 14 is idling and does not perform the air compression operation. The air compressor on / off (on / off) information 24 is detected from on / off information on the pressure regulator 23. The charging generator 15 is always driven by the engine 1. The generated power is used for charging the storage battery 25 and the like. The generated current 26 is detected by an ammeter 27.
[0012]
Power transmission torque 6, engine rotational speed 8, cooling water temperature 10, lubricating oil temperature 12, cooling fan on / off information 20, on air compressor on / off information 24, and generated current 26 Input to the engine output recording device 28. The engine output recording device 28 includes a gross shaft output calculation means 29 and a standard state engine shaft output calculation means 30.
[0013]
FIG. 2 is a system diagram showing an embodiment of the gross axis output calculation means 29. As shown in FIG. The gross shaft output calculation means 29 is composed of a net axis output calculation means 31 and an accessory driving force calculation means 32. The net shaft output calculation means 31 records the detected power transmission torque 6 and the engine rotational speed 8. Further, from the power transmission torque 6, the engine rotational speed 8, the power transmission efficiency 33 from the engine output end to the power transmission torque detector 5, and the gear ratio 34 of the transmission, for example, the net shaft output 35 of the engine is calculated as follows. Calculate according to the formula.
P _E = (N × T) / (η × R)
P _E : Engine net shaft output 35
N: Engine speed 8
T: Power transmission torque 6
η: power transmission efficiency 33
R: Gear ratio 34
The auxiliary machine driving force calculating means 32 includes a cooling fan driving force calculating means 36, an air compressor driving force calculating means 37, and a charging generator driving force calculating means 38. The cooling fan driving force calculating means 36 calculates and records the cooling fan driving force 40 from the cooling fan on / off information (on / off) 20, the cooling fan characteristics 39, and the engine speed 8. The air compressor driving force calculation means 37 calculates and records the air compressor driving force 42 from the air compressor on / off information 24, the air compressor characteristics 41, and the engine rotational speed 8. The charging generator driving force calculation means 38 calculates and records the charging generator driving force 44 from the generated current 26, the charging generator characteristics 43, and the engine speed 8.
[0014]
Hereinafter, the auxiliary machine driving force calculation means 32 will be described with reference to FIGS. 1 and 2. If the cooling fan on / off information 20 is off (off) and the cooling fan 17 is not rotating, power for driving the cooling fan 17 is not necessary. If the cooling fan on / off information 20 is on (on) and the cooling fan 17 is rotating, the power required to drive the cooling fan 17 with respect to the engine speed 8 is determined from the specifications of the cooling device. Since it is known as the cooling fan characteristic 39, it can be calculated from the engine rotational speed 8. Therefore, the cooling fan driving force 40 can be calculated from the cooling fan on / off information 20, the cooling fan characteristic 39, and the engine rotational speed 8. The method of turning on / off the rotation of the cooling fan 17 is not dependent on turning on / off the power transmission by the charge / discharge oil of the charge / discharge oil type fluid coupling 19 as in this example. A method, for example, a method by turning on / off power transmission by a friction clutch may be used. If the air compressor on / off information 24 indicates off (off) and the air compressor 14 is not performing the air compression operation, no power is required for driving the air compressor 14. If the air compressor on / off information 24 indicates on (on) and the air compressor 14 is performing the air compression operation, the power required for driving the air compressor 14 with respect to the engine rotational speed 8 is Since it is known as the air compressor characteristic 41 from the specifications of the air compressor 14, it can be calculated from the engine rotational speed 8. Therefore, the air compressor driving force 42 can be calculated from the air compressor on / off information 24, the air compressor characteristics 41, and the engine speed 8. The power required to drive the charging generator 15 with respect to the engine speed 8 and the generated current 26 is known as the charging generator characteristic 43 from the specifications of the charging generator 15. Therefore, the power required for driving the charging generator 15 can be calculated from the generated current 26, the charging generator characteristic 43, and the engine speed 8.
[0015]
The accessory driving force calculating means 32 calculates and records the accessory driving force 45 by adding the cooling fan driving force 40, the air compressor driving force 42 and the charging generator driving force 44 calculated as described above. . In addition to the above three types of auxiliary machines, if there are other auxiliary machines such as an air conditioner, the power required for driving the auxiliary machines is added. Similarly to the method other than the above, for example, the method of detecting the power transmission torque 6 of the propulsion shaft 3, the auxiliary device driving force 45 is calculated by detecting the power transmission torque of the auxiliary device driving shaft 16 with a strain gauge or the like. May be. The gross shaft output calculation means 29 calculates and records the engine gross shaft output 46 by adding the engine net shaft output 35 and the accessory driving force 45 calculated as described above.
[0016]
As described above, according to the present embodiment, during the traveling of the diesel vehicle, the engine shaft output in a state where the accessory is mounted on the engine, so-called net shaft output, the engine rotation speed, and the engine drive. The power output required to drive the auxiliary machine is recorded, and based on that record, the engine shaft output in the state where the auxiliary machine is not mounted while the vehicle is running or after running, so-called gross shaft The output can be calculated and recorded.
[0017]
The standard state engine shaft output calculation means 30 will be described below. FIG. 3 is a system diagram showing an embodiment of the standard state engine shaft output calculation means 30. The standard state engine shaft output calculation means 30 records the engine gross shaft output 46 calculated by the gloss shaft output calculation means 29, the engine rotational speed 8, the coolant temperature 10, and the lubricating oil temperature 12. As described above, since it is difficult to always keep both temperatures 10 and 12 in the standard state during traveling of the diesel vehicle, the gross amount of the engine is determined based on both temperatures 10 and 12 detected during traveling. The shaft output 46 is modified to a standard state engine shaft output 47. For example,
T ₀ = k (t ₁ , t ₂ ) × T
T ₀ : Standard state engine shaft output 47
T: engine gross shaft output 46
k (t ₁ , t ₂ ): Correction coefficient 48
t ₁ : Cooling water temperature 10
t ₂ : Lubricating oil temperature 12
The standard state engine shaft output 47 is calculated and recorded as a function of the detected coolant temperature 10 and the lubricating oil temperature 12. However, the correction coefficient 48 is obtained in advance by performing a performance test on the engine or the engine of the same type by varying the cooling water temperature and the lubricating oil temperature by an engine performance test apparatus.
[0018]
As described above, according to the present embodiment, during the traveling of the diesel vehicle, the respective detection results of the engine gross shaft output, the engine rotational speed, the engine cooling water temperature or the lubricating oil temperature are recorded. Based on the record, the shaft output of the engine can be calculated and recorded when the coolant temperature or the lubricant temperature reaches the standard state while the vehicle is running.
[0019]
In the present invention, the engine output recording device is attached to a device relating to the control of a diesel vehicle, for example, an electronic governor, a transmission control device, an idling control device, a speed detection device, or a monitor device, or these devices are attached. Is also applicable.
[0020]
【The invention's effect】
According to the present invention, the shaft output or the shaft torque in the state where the auxiliary machine is not mounted is calculated from the shaft output or the shaft torque of the diesel engine in the state where the auxiliary machine is obtained while the diesel vehicle is running, and the cooling is performed. By calculating the shaft output or shaft torque when the water temperature or the lubricating oil temperature is in the standard state, the shaft output or shaft torque of the diesel engine of the traveling diesel vehicle can be accurately measured. By comparing the shaft output or shaft torque detected with high accuracy to the predetermined shaft output or shaft torque, it is possible to accurately determine whether or not the engineer who performs inspection and repair of the engine performs the engine overhaul. Can be done.
[Brief description of the drawings]
FIG. 1 is a diagram showing an embodiment of a device configuration when the present invention is applied to a railway diesel vehicle.
FIG. 2 is a system diagram showing an example of gross axis output calculation means.
FIG. 3 is a system diagram showing an embodiment of a standard state engine shaft output calculation means.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Engine 2 Transmission 3 Propulsion shaft 4 Driving wheel 5 Power transmission torque detector 6 Power transmission torque 7 Engine rotation speed detector 8 Engine rotation speed 9 Cooling water temperature detector 10 Cooling water temperature 11 Lubricating oil temperature detector 12 Lubricating oil temperature 13 Cooling Device 14 Air Compressor 15 Charging Generator 16 Auxiliary Drive Shaft 17 Cooling Fan 18 Radiator 19 Charge / Discharge Oil Fluid Coupling 20 Cooling Fan On / Off Information 21 Air Pipe 22 Air Damage 23 Pressure Regulator 24 Air Compressor On / Off Information 25 Storage battery 26 Generated current 27 Ammeter 28 Engine output recording device 29 Gross shaft output calculating means 30 Standard state engine shaft output calculating means 31 Net shaft output calculating means 32 Auxiliary machine driving force calculating means 33 Power transmission efficiency 34 Gear ratio 35 Net Shaft output 36 Cooling fan driving force calculating means 37 Air compressor driving force calculating means 38 Charging generator driving force calculating means 39 Cooling fan characteristics 40 Cooling fan driving force 41 Air compressor characteristic 42 Air compressor driving force 43 Charging generator characteristic 44 Charging generator driving force 45 Auxiliary machine driving force 46 Gross shaft output 47 Standard state engine shaft output 48 Correction factor

Claims (2)

Hand stage you detect the axial output or axial torque of the diesel engine, and hand stage you detect the rotational speed of the diesel engine, is driven by the diesel engine, the cooling fan, air compressor, charging generator, and a engine output recording apparatus used in a diesel vehicle comprising a hand stage you detect the power required to drive the respective auxiliary heating and cooling device, a
The hand stage that records the detection result of each detection means during running of the diesel vehicle, the diesel vehicle is traveling, the cooling fan on the basis of the recording of the pre-crisis record unit, an air compressor, charging generator The power required for driving each auxiliary machine of the engine and the air conditioning unit is added to calculate the auxiliary driving force or auxiliary driving torque, and the auxiliary driving force or auxiliary driving is calculated based on the shaft output or axial torque of the diesel engine. by adding the torque, the auxiliary machine out calculate the axial output or axial torque of the diesel engine in a state where not mounted, and recording to means and an equipped engine output record of the diesel vehicle, characterized in Rukoto apparatus. Hand stage you detect the axial output or axial torque of the diesel engine, an engine output recording apparatus used in a diesel vehicle and a hand stage you detect the cooling water temperature or the lubricating oil temperature of the diesel engine,
Hand stage that records the detection result of each detection means during traveling of the diesel vehicle, the in diesel vehicle is traveling, before Kiki recording means records the pre-cooling water temperature or the lubricating oil temperature based on the by multiplying the correction coefficient that has been determined as a function in the axial output or axial torque of the diesel engine, the cooling water temperature or the lubricating oil temperature is out calculate the axial output or axial torque of the diesel engine at the normal state, and engine output recording device for a diesel vehicle, characterized in Rukoto and means for recording, a.

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