KR101751853B1 - System for simulating performance of marine engine and simulation method thereof - Google Patents

System for simulating performance of marine engine and simulation method thereof Download PDF

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KR101751853B1
KR101751853B1 KR1020150154941A KR20150154941A KR101751853B1 KR 101751853 B1 KR101751853 B1 KR 101751853B1 KR 1020150154941 A KR1020150154941 A KR 1020150154941A KR 20150154941 A KR20150154941 A KR 20150154941A KR 101751853 B1 KR101751853 B1 KR 101751853B1
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engine
temperature
performance factor
value
marine engine
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KR1020150154941A
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Korean (ko)
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KR20170052879A (en
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조영식
추정훈
박주이
추길환
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대우조선해양 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/21—Control means for engine or transmission, specially adapted for use on marine vessels
    • G06F17/30—

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
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Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a performance simulation system for a marine engine and a simulation method thereof, which can simulate the performance of a marine engine based on operating conditions including the power and speed of the marine engine, the atmospheric temperature and the temperature of the cooling water.
According to an embodiment of the present invention, a database for storing a reference value of a performance factor of a marine engine and a reference temperature of an atmospheric temperature and a cooling water temperature for each performance factor reference value; And calculating a performance factor value of the marine engine with respect to the power and speed of the marine engine inputted from the user based on the performance factor reference value of the marine engine received from the database, And a simulation device for outputting a final value of the performance factor of the marine engine simulated by applying the temperature and the temperature of the cooling water.

Figure R1020150154941

Description

TECHNICAL FIELD [0001] The present invention relates to a performance simulation system for a marine engine,

The present invention relates to a performance simulation system for a marine engine and a simulation method thereof, and more particularly, to a simulation system for a marine engine which can simulate the performance of a marine engine by receiving operating conditions including the power and speed of the marine engine, And more particularly, to a performance simulation system for a marine engine and a simulation method thereof.

In general, ships capable of transporting cargo at low cost as compared with other means of transportation are becoming larger and larger, and engines mounted on such ships are also increasing in size.

The marine engines used in these vessels are very large in size and are used in a wide variety of marine engines such as fuel oil system, lubricant system, supercharger and air system, supercharger output, high temperature cooling water system, low temperature cooling water system, And various devices are installed.

The performance of the marine engine described above depends on the operating conditions, the atmospheric temperature and the temperature of the cooling water.

In the conventional simulation system 1 for simulating the performance of such a ship, as shown in FIG. 1, in the state where the output data for the operating condition, the atmospheric temperature and the cooling water temperature are secured in the database 5, When the power and speed of the engine, the atmospheric temperature, and the coolant temperature are inputted, the output value corresponding to the input is outputted. Accordingly, the conventional simulation system 1 requires a large amount of data to be input in order to secure the database 5, so that not only does it require a great amount of manpower, but also there is a risk of errors in inputting.

Therefore, there is a need for an improved simulation system capable of simulating the performance of a marine engine through the input of data with a high degree of accuracy and with a simpler data input.

Korean Patent Publication No. 2012-0092356 (Aug. 21, 2012) "Simulation device for a ship engine and simulation method thereof"

An object of the present invention is to provide a performance simulation system and a simulation method therefor of a marine engine which can simulate the performance of a marine engine by receiving operating conditions including the power and speed of the marine engine, the atmospheric temperature and the temperature of the cooling water have.

According to an embodiment of the present invention, a database for storing a reference value of a performance factor of a marine engine and a reference temperature of an atmospheric temperature and a cooling water temperature for each performance factor reference value, And calculating a performance factor value of the marine engine with respect to the power and speed of the marine engine inputted from the user based on the performance factor reference value of the marine engine received from the database, And a simulation device for outputting a final value of the performance factor of the marine engine simulated by applying the temperature and the temperature of the cooling water.

A normalization unit for extracting a performance reference factor value of the ship engine with respect to the power and speed of the ship engine inputted by the user based on the performance factor reference value received from the database; A calculation unit for calculating a performance factor value of the ship engine using the performance factor reference value and the operating condition of the extracted ship engine; And comparing the reference temperature of the atmospheric temperature and the cooling water temperature stored in the database with the atmospheric temperature and the cooling water temperature input from the user and reflecting the changed difference to the performance factor value of the calculated ship engine, And a temperature conversion unit for outputting the temperature information.

The normalization unit may select a reference value closest to a value obtained by dividing the power of the marine engine by a speed among the reference values stored in the database and extract a performance factor reference value of the marine engine set in the selected reference value.

Wherein the performance factor reference value of the marine engine is determined based on at least one of a non-fuel consumption amount, an exhaust gas generation amount, an exhaust gas temperature, a steam generation amount, an engine usage amount, a scavenging pressure, The coolant heat loss amount of the engine coolant and the main lubricant heat loss amount.

According to another embodiment of the present invention, there is provided a simulation method for simulating engine performance of a ship including a database for storing a reference value of a performance factor of a marine engine and a reference temperature of an atmospheric temperature and a cooling water temperature for each of the performance factor reference values, The apparatus comprising: receiving power and speed of a marine engine inputted from a user; Extracting a performance reference factor value of the ship engine with respect to the power and speed of the ship engine inputted from the user based on the performance factor reference value of the ship engine received from the database; Calculating a performance factor value of the ship engine using the performance factor reference value and the operational condition of the extracted ship engine; And comparing the reference temperature of the atmospheric temperature and the cooling water temperature stored in the database with the atmospheric temperature and the cooling water temperature input from the user and reflecting the changed difference to the performance factor value of the calculated ship engine, And outputting the simulation result.

Wherein the extracting comprises: selecting a reference value closest to a value obtained by dividing the power of the marine engine among the reference values stored in the database; And extracting a performance factor reference value of the marine engine set to the predetermined reference value.

According to the embodiment of the present invention, the performance of the marine engine can be simulated by receiving the operating conditions including the power and speed of the marine engine, the atmospheric temperature, and the temperature of the cooling water. Accordingly, it is possible to reduce the risk due to the error of the input data while maintaining the accuracy as compared with the conventional simulation system.

1 is a view for explaining a performance simulation system of a conventional marine engine,
FIG. 2 is a view for explaining a performance simulation system of a marine engine according to an embodiment of the present invention, and FIG.
3 is a flowchart illustrating a performance simulation method of a marine engine according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a view for explaining a performance simulation system of a marine engine according to an embodiment of the present invention.

Referring to FIG. 2, a performance simulation system 10 for a marine engine according to an embodiment of the present invention includes a database 100 for storing a performance factor reference value of a marine engine, a power of a marine engine to be simulated by a user, And the speed factor rpm, the atmospheric temperature T_amb and the temperature T_cool of the cooling water are received, the performance factor reference value and the operating condition of the normalized ship engine based on the performance factor reference value of the ship engine stored in the database 10 And a simulation apparatus 200 for outputting a final output value of a performance factor of a ship engine which is simulated by applying the atmospheric temperature and the temperature of the cooling water to the performance factor values of the ship engine. Power is the amount of energy consumed per hour.

The database 100 stores the performance factor reference value of the marine engine according to the operation amount of the engine as shown in Table 1 below. The performance factors of the marine engine are the non-fuel consumption amount, the exhaust gas generation amount, the exhaust gas temperature, the steam generation amount, the engine usage amount, the scavenging pressure, the scavenging temperature, the desired cooler heat loss amount, The reference value according to the operation amount of the engine is a value obtained by dividing the power of the engine by the speed of the engine, and the performance factor reference value of the marine engine is set for each reference value.

Also, the reference temperature for the atmospheric temperature and the coolant temperature is set for each performance factor reference value, and the reference temperature for the atmospheric temperature and the coolant temperature can be set differently according to the performance factor reference value.

More specifically, the reference temperature of the atmospheric temperature and the reference temperature of the cooling water temperature may be the performance factor reference value of the marine engine determined under the condition of, for example, 25 DEG C, or the reference temperature of the atmospheric temperature and the reference temperature of the cooling water temperature may be different The reference value of the atmospheric temperature and the cooling water temperature is set for each of the performance factor reference values.

The amount of operation of the engine
(% SMCR) 100 95 90 85 80 75 ... The power of the engine
(kW) 62,501 59,376 56,251 53,126 50,001 46,876 ... Engine speed
(r / min) 82.3 80.9 79.5 78.0 76.4 74.8 ... Non-fuel consumption
(g / kWh) 164.7 163.5 162.5 161.7 161.1 160.8 ... Amount of exhaust gas generation
(kg / s) 138.11 133.38 128.53 123.53 118.41 112.85 ... Exhaust gas temperature
(° C) 240 233 227 223 221 220 ... Steam generation
(kg / h) 11,191 9,381 7,951 6,871 6,091 5,601 ... Engine usage
(kg / s) 135.3 130.7 126.0 121.1 116.1 110.8 ... Desired pressure
(bara) 4.09 3.92 3.74 3.56 3.38 3.20 ... Desired temperature
(° C) 37 36 34 33 32 31 ... Unknown cooler
Heat loss
(kW) 23,321 21,761 30,211 18,641 17,061 15,481 ... Engine coolant
Cooler heat loss (kW) 7,431 7,151 6,881 6,601 6,331 6,051 ... Note Lubrication heat loss
(kW) 4,481 4,421 4,4361 4,281 4,201 4,101 ...

2, the simulation apparatus 200 includes a normalization unit 210, a calculation unit 220, and a temperature conversion unit 230.

The normalization unit 210 receives the performance factor reference value of the marine engine according to the operation amount of the marine engine from the database 100 and interpolates the power and speed of the marine engine inputted from the user.

More specifically, the normalization unit 210 selects a reference value close to a value obtained by dividing the power of the marine engine inputted by the user by a speed, and calculates a performance factor reference value {output_iso (Power / rpm)} of the marine engine set to a predetermined reference value. And provides the performance factor reference value of the extracted marine engine to the calculation unit 220. [

The calculating unit 220 calculates a performance factor value (Output-iso) of the marine engine based on the operational conditions including the power and speed of the marine engine according to the characteristics of the performance factor reference value of the marine engine. At this time, among the performance factor values of the marine engine calculated by the calculation unit 220, the non-fuel consumption amount, the exhaust gas generation amount, and the exhaust gas temperature are calculated to be the same as the performance factor reference value of the marine engine, The amount of loss and the amount of heat loss of the coolant in the engine coolant are calculated to be proportional to the speed of the engine, and the remaining performance factor values are calculated by a predefined calculation method.

The temperature conversion unit 230 converts the performance factor value of the marine engine calculated by the calculation unit 220 according to the atmospheric temperature and the temperature of the cooling water inputted from the user.

More specifically, the temperature converting unit 230 compares the reference temperature of the atmospheric temperature and the cooling water temperature set for each performance factor reference value of the marine engine with the atmospheric temperature and the cooling water temperature input from the user, And outputs the final value of the performance factor of the marine engine by reflecting the performance factor value of the marine engine. The influence of the atmospheric temperature and the cooling water temperature on the performance factor value of the marine engine can be obtained by using the formula given in the engine guide, for example. At this time, the final value of the performance factor of the ship engine may be outputted in a graph form.

By doing so, it is possible to simulate the performance of the marine engine by inputting only the operating conditions including engine power and speed, the atmospheric temperature and the coolant temperature. It is possible to reduce the waste of manpower and the risk of errors caused by inputting a large number of data as in the conventional art.

A simulation method of a performance simulation system of a marine engine having such a configuration will be described with reference to FIG.

3 is a flowchart illustrating a method of simulating performance of a marine engine according to another embodiment of the present invention.

Referring to FIG. 3, the simulation apparatus 200 receives the power and speed of the ship engine to be simulated, the atmospheric temperature, and the temperature of the cooling water inputted from the user (S11).

The simulation apparatus 200 may be connected to the database 100 in which the performance factor reference value of the marine engine is stored according to the operation amount of the marine engine, or may include the database 100 described above.

The simulation apparatus 200 selects a reference value close to a value obtained by dividing the power of the marine engine received in the step S11 by the speed based on the performance factor reference value of the marine engine stored in the database 100 (S13).

The simulation apparatus 200 extracts performance factor reference values of the marine engine set at the predetermined reference value (S15).

The simulation apparatus 200 calculates the performance factor values of the marine engine by applying the navigation conditions according to the characteristics of each of the performance factor reference values of the extracted marine engine (S17). The reference temperature for the atmospheric temperature and the cooling water temperature is set for each performance factor reference value of the extracted ship engine.

The performance factor value of the ship engine is an output value under the operating conditions including the power and speed of the ship engine. The performance factor value of the ship engine has the same value as the performance factor reference value of the ship engine, It can have a proportional structure.

The simulation apparatus 200 receives the difference between the atmospheric temperature and the cooling water temperature received in step S11 described above with respect to the calculated performance factor value of the marine engine and the reference temperature of the atmospheric temperature and the cooling water temperature set for each performance factor reference value, And outputs the final value of the performance factor of the marine engine (S19).

The invention being thus described, it will be obvious that the same way may be varied in many ways. Such modifications are intended to be within the spirit and scope of the invention as defined by the appended claims.

10: Simulation system 100: Database
200: Simulation apparatus 210: Normalization unit
220: Calculator 230: Temperature converter

Claims (6)

A database for storing a reference value of the performance factor of the marine engine and a reference temperature of the atmospheric temperature and the cooling water temperature for each of the performance factor reference values; And
The performance factor value of the marine engine is calculated with respect to the power and speed of the marine engine inputted from the user based on the performance factor reference value of the marine engine received from the database, And a simulation device for outputting a final value of the performance factor of the marine engine simulated by applying the temperature of the cooling water. The method according to claim 1,
A normalization unit for extracting a performance reference factor value of the ship engine with respect to the power and speed of the ship engine inputted by the user based on the performance factor reference value received from the database;
A calculation unit for calculating a performance factor value of the ship engine using the performance factor reference value and the operating condition of the extracted ship engine; And
A comparison is made between the reference temperature of the atmospheric temperature and the cooling water temperature stored in the database and the atmospheric temperature and the cooling water temperature inputted from the user, and the calculated difference value is reflected in the calculated performance factor value of the marine engine, And a temperature conversion unit for outputting the temperature information. The method of claim 2,
Wherein the normalization unit selects a reference value closest to a value obtained by dividing power of the marine engine among the reference values stored in the database and extracts a performance factor reference value of the marine engine set to the selected reference value Simulation system. The method according to claim 1,
Wherein the performance factor reference value of the marine engine is determined based on at least one of a non-fuel consumption amount, an exhaust gas generation amount, an exhaust gas temperature, a steam generation amount, an engine usage amount, a scavenging pressure, A coolant heat loss amount of the engine coolant and a main lubricant heat loss amount. A simulation method for simulating engine performance of a ship including a database for storing a reference value of a performance factor of a marine engine and a reference temperature of an atmospheric temperature and a cooling water temperature for each performance factor reference value,
Receiving power and speed of a ship engine inputted from a user;
Extracting a performance reference factor value of the ship engine with respect to the power and speed of the ship engine inputted from the user based on the performance factor reference value of the ship engine received from the database;
Calculating a performance factor value of the ship engine using the performance factor reference value and the operational condition of the extracted ship engine; And
A comparison is made between the reference temperature of the atmospheric temperature and the cooling water temperature stored in the database and the atmospheric temperature and the cooling water temperature inputted from the user, and the calculated difference value is reflected in the calculated performance factor value of the marine engine, And outputting the simulation result. The method of claim 5,
The extracting step
Selecting a reference value closest to a value obtained by dividing power of the marine engine by a speed among reference values stored in the database; And
And extracting a performance factor reference value of the marine engine set to the predetermined reference value.
KR1020150154941A 2015-11-05 2015-11-05 System for simulating performance of marine engine and simulation method thereof KR101751853B1 (en)

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JP2010216887A (en) * 2009-03-13 2010-09-30 Honda Motor Co Ltd Engine simulator

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010216887A (en) * 2009-03-13 2010-09-30 Honda Motor Co Ltd Engine simulator

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