CN115950509A - Method and device for checking oil consumption of ship main engine - Google Patents
Method and device for checking oil consumption of ship main engine Download PDFInfo
- Publication number
- CN115950509A CN115950509A CN202310107322.5A CN202310107322A CN115950509A CN 115950509 A CN115950509 A CN 115950509A CN 202310107322 A CN202310107322 A CN 202310107322A CN 115950509 A CN115950509 A CN 115950509A
- Authority
- CN
- China
- Prior art keywords
- oil consumption
- time
- current
- host
- main engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention particularly relates to a method for checking oil consumption of a ship main engine, which comprises the following steps: acquiring real-time updated ship data at regular time; calculating the oil consumption of the stable region of the host in the stop operation based on the acquired accumulated amount of the flow meters at the inlet and the outlet of the host to judge whether an oil consumption error exists; if the oil consumption is zero, no error exists; when the oil consumption error exists, the oil consumption error is calculated, and the total oil consumption between the stable sections of the stop operation is corrected through a correction formula; establishing a current oil consumption calculation model by taking a correction formula as a model; and after the calculation instruction is obtained, calling the current oil consumption calculation model, and calculating the oil consumption from the required time period to the current time, namely the current oil consumption. A corresponding device is also provided, and whether the flowmeter sensor generates errors or not is rapidly identified by acquiring data of the ship in real time; and aiming at the marine main engine mass flowmeter, error checking of the current oil consumption is carried out, and reduction of oil consumption calculation precision caused by acquisition errors of the flowmeter is avoided.
Description
Technical Field
The invention belongs to the technical field of ships, and particularly relates to a method and a device for checking oil consumption of a ship main engine.
Background
The main engine of the ship, i.e. the power plant of the ship, is a machine for providing power for various ships. The main engine of the ship can be divided into a steam engine, an internal combustion engine, a nuclear power machine and an electric motor according to the different properties of the adopted fuel, the combustion place, the used working medium, the working mode and the like. Most of the ships use a reciprocating diesel engine as a main engine in an internal combustion engine at present, and a large amount of fuel is needed, so that the fuel and the consumption thereof need to be accurately measured in the aspects of power load, fuel distribution, navigation, cost calculation and the like around the ships.
Mass flow meters, as an advanced fuel metering device, are increasingly installed on ships of large shipping companies, mainly for verifying the quantity of received fuel and monitoring the consumption quantity of self-service fuel by ships. The marine mass flowmeter comprises four parts: the flowmeter of the inlet and the outlet of the main engine, the flowmeter of the inlet and the outlet of the auxiliary engine, the flowmeter of the inlet and the outlet of the boiler and the flowmeter of the oiling inlet, and the flowmeters of the four parts operate independently. The host flow meter is taken as an example, and the host oil consumption in the period can be calculated according to the change value of the accumulated amount of the flow meter at the inlet and the outlet of the host.
However, the accuracy of the mass flowmeter is reduced due to the long-term operation of the mass flowmeter, so that the accuracy of the fuel consumption calculation is reduced. Therefore, how to improve the calculation accuracy of the oil consumption of the ship main engine is very important to provide further support for the next oil consumption cost calculation and the ship performance evaluation.
Disclosure of Invention
The invention provides a method for checking the oil consumption of a ship main engine and a corresponding device for checking the oil consumption of the ship main engine, in view of the problem that the accuracy is reduced and the amount of the oil consumption of the main engine cannot be accurately provided due to the fact that a mass flow meter of the ship main engine runs for a long time.
The present invention provides the following scheme:
the invention provides a method for checking oil consumption of a ship main engine, which comprises the following steps:
first, data acquisition: based on intelligent ship data, regularly acquiring real-time updated ship data, wherein the ship data comprises a main engine rotating speed, main engine power, accumulated quantity of a main engine inlet and outlet flowmeter and a navigation speed;
and secondly, error identification: calculating the oil consumption of the stable interval of the host computer stopping running based on the accumulated amount of the flow meters at the inlet and the outlet of the host computer, calculating the error value of the flow meter of the host computer in unit time, and bringing the calculated error value into the next error correction;
thirdly, error correction: when the oil consumption error exists, calculating the oil consumption error of the stable operation stopping interval, and correcting the total oil consumption between the stable operation stopping intervals through a correction formula; establishing a current oil consumption calculation model by taking a correction formula as a model;
step four, calculating the current oil consumption: and after the calculation instruction is obtained, calling the current oil consumption calculation model according to the time period required in the actual operation, and calculating the oil consumption from the required time period to the current time, namely the current oil consumption.
Further, the host operation stop stable interval refers to a time period when the ship is in a stable state of operation stop; in the second step, the error identification is identified based on the stable interval of the host computer stopping operation 2 times closest to the current time.
Further, in the method for checking oil consumption of a marine main engine, the latest 2 stable sections for stopping operation of the main engine are determined by judging the state of the main engine stopping operation, where the conditions for judging the stop state are as follows: the main engine rotating speed =0, the main engine power =0, and the navigational speed <1kn;
and respectively recording the determined latest 2 stable operation stopping intervals as:
A1(T 1e -T 1s ) For the nearest 1 st host computer to stop operating in a stable interval, wherein T 1s To meet the start time of the host shutdown condition, T 1e Is the end time;
A2(T 2e -T 2s ) For the nearest 2 nd host computer stop operation stable interval, wherein T 2s To meet the start time of the host shutdown condition, T 2e Is the end time.
Further, the oil consumption in the last 2 stable operation stop intervals is respectively recorded as:
A1(T 1e -T 1s ) L1= (M) 1e to -M Into 1s )-(M Out of 1e -M Goes out for 1s )；
A2(T 2e -T 2s ) L2= (M) To 2e -M Into 2s )-(M Go out 2e -M Goes out for 2s )；
Wherein: m is a group of 1e to Indicating inlet flow meter at T 1e Cumulative amount of time, M Into 1s Indicating inlet flow meter at T 1s Cumulative amount of time, M Out of 1e Indicating outlet flow meter at T 1e Cumulative amount of time, M Goes out for 1s Indicating outlet flow meter at T 1s Cumulative amount of time of day;
M to 2e Indicating inlet flow meter at T 2e Cumulative amount of time, M Into 2s Indicating inlet flow meter at T 2s Cumulative amount of time, M Out of 2e Indicating the outlet flow meter is at T 2e Cumulative amount of time, M Goes out for 2s Indicating outlet flow meter at T 2s Cumulative amount of time of day.
Furthermore, the intelligent ship data refers to a monitoring system for ship loading, and comprises an AIS, an engine room monitoring and alarming system, GPS data, a log data system and the like, and the timely acquisition of the real-time updated ship data refers to the acquisition of the real-time updated ship data every 10 minutes.
Further, the correction formula is based on the formula of the change of the oil consumption amount per 10 minutes between the latest 2 stable operation stop intervals A1 and A2
S t ＝(S1-S2)/((T 1e +T 1s )/2-(T 2e +T 2s )/2)*(t+(T 2e +T 2s )/2)
Obtained after integral correction:
l12 is the total oil consumption between 2 stable operation stop intervals A1 and A2, i.e. the total oil consumption in the time from T2e to T1 s:
wherein S1 is the error oil consumption S1= L1/(T) every 10 minutes of the 1 st stable operation interval A1 recently 1e -T 1s )；
S2 is the error oil consumption S2= L2/(T) every 10 minutes of the 2 nd stable operation interval A2 2e -T 2s )。
Further, the current fuel consumption calculation model includes:
(1) If the rotating speed of the main engine at the current moment =0, the power of the main engine =0 and the navigational speed<1kn, the main engine is in a stop state, namely the current oil consumption F nh ＝0；
(2) If the host computer at the current time is in a non-stop state, calculating the oil consumption from the required time period to the current time according to the time period required in the actual operation, namely calculating the oil consumption n hours before the current time, namely the current oil consumption is
Wherein: m is a group of Let in now Indicating the inlet flow meter is at the current time T now Cumulative amount of (A), M Let in now-n Indicating that the inlet flow meter is n hours T before the current time now-n Cumulative amount of time, M Go out now Indicating the outlet flow meter is at the current time T now Cumulative amount of (2), M Out of now-n Indicating that the outlet flow meter was n hours T before the current time now-n Cumulative amount of time of day.
Preferably, if the host computer is in the non-stop state at the current time, the oil consumption 1 hour before the current time is calculated, that is, the current oil consumption is
Wherein: m Let in now Indicating the inlet flow meter at the current time T now Cumulative amount of (A), M Let in now-1 Indicating that the inlet flow meter was one hour T before the current time now-1 Cumulative amount of time, M Go out now Indicating the outlet flow meter at the current time T now Cumulative amount of (A), M Go out now-1 Indicating that the outlet flow meter was one hour T before the current time now-1 Cumulative amount of time of day.
The invention also provides a device for checking the oil consumption of the ship main engine, which comprises:
a data acquisition module: the system comprises a data acquisition module, a data processing module and a data processing module, wherein the data acquisition module is used for acquiring real-time updated ship data in a timing manner based on intelligent ship data, and the ship data comprises a host rotating speed, host power, accumulated amount of a host inlet and outlet flow meter and navigational speed;
an error identification module: the host flow meter error value calculation method is used for calculating the oil consumption of a stable region of the host stop running based on the accumulated quantity of the flow meters at the inlet and the outlet of the host, calculating the error value of the host flow meter in unit time, and bringing the calculated error value into the next error correction;
an error correction module: when the oil consumption error exists, the method is used for calculating the oil consumption error of the stable operation stopping interval and correcting the total oil consumption between the stable operation stopping intervals through a correction formula; the method also comprises a current oil consumption calculation model established by taking the correction formula as a model;
the current oil consumption calculation module: and the current oil consumption calculation model is called by the user according to the required time period in the actual operation after the calculation instruction is obtained, and the oil consumption from the required time period to the current time is calculated to be the current oil consumption.
Further, in the method for checking oil consumption of a ship main engine or the apparatus for checking oil consumption of a ship main engine according to the present invention, the ship includes a ship including a single main engine or a plurality of main engines, and the main engine refers to a single main engine or a plurality of main engines on the ship.
The oil consumption calculation method provided by the invention is based on intelligent ship data driving, error checking is carried out on a mass flowmeter of a marine host, and whether errors are generated by a flowmeter sensor or not is rapidly identified on the basis of the oil consumption of the host in a stable time period when the host stops running by acquiring the data of a ship in real time; by calculating the error value, the current oil consumption is checked, and the reduction of the oil consumption calculation precision caused by the acquisition error of the flowmeter is avoided.
Drawings
FIG. 1 is a schematic diagram illustrating steps of a method for checking oil consumption of a marine main engine according to the present invention.
Fig. 2 is a program module diagram of a checking device for oil consumption of a ship main engine provided by the invention.
Fig. 3 is a schematic flow chart of an implementation of a method for checking oil consumption of a marine main engine provided by the invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Because the accuracy of the mass flowmeter is reduced under the long-time operation of the mass flowmeter, the accuracy of the oil consumption calculation is reduced. The invention can calculate the oil consumption of the host by using the flow meter at the inlet and the outlet of the host, simultaneously analyze the error generated by the flow meter, and can improve the accuracy of oil consumption calculation by combining the error rate for calibration.
As shown in fig. 1, the method for checking oil consumption of a marine main engine provided by the invention comprises the following steps:
step s1, acquiring data: and acquiring real-time updated ship data at regular time based on intelligent ship data, wherein the ship data comprises the rotating speed of a host, the power of the host, the accumulated amount of an inlet/outlet flow meter of the host and the navigational speed.
The intelligent ship data refers to an intelligent control system loaded by a ship, and comprises an AIS, an engine room monitoring and alarming system, GPS data, a log data system and the like; the step of acquiring the real-time updated ship data at regular time refers to acquiring the real-time updated ship data every 10 minutes, in this embodiment, the actual engineering application is to process the data of one second level for ten minutes, and ten minutes can be one hour or thirty minutes and other time periods, so that the time period of acquiring the instant update is met as long as the time period is met.
Step s2 error identification: calculating the oil consumption of the stable section of the stop operation of the host machine based on the accumulated quantity of the flow meters at the inlet and the outlet of the host machine to judge whether an oil consumption error exists; if the oil consumption is zero, no error exists; and if the oil consumption exists, the next error correction is carried out.
The main engine operation stopping stable interval refers to a time interval when the ship is in a stable state of operation stopping; in step s2, the error identification is identified based on the stable interval of the host computer stopping operation 2 times closest to the current time. In practical operation experience, the span time of the operation stopping stable interval is long, and the operation time of some cargo ships includes days, weeks, even months and the like, so that the operation stopping stable interval mainly selects the nearest time period, and the calculation and checking error based on the time period nearest to the current time period is meaningful. Therefore, whether the flowmeter sensor generates an error or not can be quickly identified based on the oil consumption of the stable region when the host stops running, and further checking is facilitated. The method is characterized in that the latest 2 stable operation stopping intervals of the host are determined by judging the operation stopping state of the host, wherein the conditions for judging the operation stopping state are as follows: the main engine rotation speed =0, the main engine power =0, and the navigation speed <1kn.
And step s3, error correction: when the oil consumption error exists, calculating the oil consumption error of the stable operation stopping interval, and correcting the total oil consumption between the stable operation stopping intervals through a correction formula; and establishing a current oil consumption calculation model by taking the correction formula as a model.
Step s4, calculating the current oil consumption: and after the calculation instruction is obtained, calling the current oil consumption calculation model according to the time period required in the actual operation, and calculating the oil consumption from the required time period to the current time, namely the current oil consumption.
Fig. 2 shows a block diagram of a program of a device for checking oil consumption of a ship main engine according to the present invention. Which comprises the following steps:
the data acquisition module 101: the system comprises a data acquisition module, a data processing module and a data processing module, wherein the data acquisition module is used for acquiring real-time updated ship data in a timing manner based on intelligent ship data, and the ship data comprises a host rotating speed, host power, accumulated amount of a host inlet and outlet flow meter and navigational speed;
the error identification module 102: the method is used for calculating the oil consumption of the stable section of the host in the stop operation based on the accumulated amount of the flow meters at the inlet and the outlet of the host to judge whether an oil consumption error exists; if the oil consumption is zero, no error exists; if the oil consumption exists, the next step of error correction is carried out;
the error correction module 103: when the oil consumption error exists, the method is used for calculating the oil consumption error of the stable operation stopping interval and correcting the total oil consumption between the stable operation stopping intervals through a correction formula; the method also comprises a current oil consumption calculation model established by taking the correction formula as a model;
the current oil consumption calculation module 104: and the current oil consumption calculation model is called according to the time period required in the actual operation by the user after the calculation instruction is obtained, and the oil consumption from the required time period to the current time is calculated to be the current oil consumption.
In this embodiment, in the error identification module 102, the determined latest 2 stable operation stop intervals are respectively recorded as:
A1(T 1e -T 1s ) For the nearest 1 st host computer to stop operating in a stable interval, wherein T 1s To meet the start time of the host shutdown condition, T 1e Is the end time;
A2(T 2e -T 2s ) For the nearest 2 nd host computer stop operation stable interval, wherein T 2s To meet the start time of the host shutdown condition, T 2e Is the end time.
The oil consumption in the last 2 stable operation stop intervals is respectively recorded as:
A1(T 1e -T 1s ) L1= (M) 1e -M Into 1s )-(M Out of 1e -M Goes out for 1s )；
A2(T 2e -T 2s ) L2= (M) To 2e -M Into 2s )-(M Out of 2e -M Goes out for 2s )；
Wherein: m is a group of 1e to Indicating inlet flow meter at T 1e Cumulative amount of time, M Into 1s Indicating inlet flow meter at T 1s Cumulative amount of time, M Out of 1e Indicating outlet flow meter at T 1e Cumulative amount of time, M Goes out for 1s Indicating outlet flow meter at T 1s Cumulative amount of time of day;
M to 2e Indicating inlet flow meter at T 2e Cumulative amount of time, M Into 2s Indicating inlet flow meter at T 2s Cumulative amount of time, M Out of 2e Indicating outlet flow meter at T 2e Cumulative amount of time, M Go out for 2s Indicating outlet flow meter at T 2s Accumulation of time of dayAmount of the compound (A).
Based on this, in the present embodiment, the correction formula in the error correction module 103 is based on the formula of the change in the error oil consumption amount per 10 minutes between the latest 2 steady-state operation stop intervals A1 and A2
S t ＝(S1-S2)/((T 1e +T 1s )/2-(T 2e +T 2s )/2)*(t+(T 2e +T 2s )/2)
Obtained after integral correction:
l12 is the total oil consumption between 2 stable operation stop intervals A1 and A2, i.e. the total oil consumption in the time from T2e to T1 s:
wherein S1 is the error oil consumption S1= L1/(T) per 10 minutes of the 1 st stable operation interval A1 recently 1e -T 1s )；
S2 is the error oil consumption S2= L2/(T) every 10 minutes of the 2 nd stable operation interval A2 2e -T 2s )。
Therefore, the error correction module 103 further includes a current fuel consumption calculation model established by using the correction formula as a model, which is:
(1) If the rotating speed of the main engine is =0 at the current moment, the power of the main engine is =0, and the navigation speed is set<1kn, the main engine is in a stop state, namely the current oil consumption F nh ＝0；
(2) If the host computer at the current time is in a non-stop state, calculating the oil consumption from the required time period to the current time according to the time period required in the actual operation, namely calculating the oil consumption n hours before the current time, namely the current oil consumption is
Wherein: m Let in now Indicating the inlet flow meter at the current time T now Cumulative amount of (A), M Let in now-n Indicating that the inlet flow meter is n hours T before the current time now-n Cumulative amount of time, M Go out now Indicating outlet flow meterAt the current time T now Cumulative amount of (A), M Out of now-n Indicating that the outlet flow meter was n hours T before the current time now-n Cumulative amount of time of day.
A specific implementation process of the method for checking oil consumption of a marine host provided in this embodiment is shown in fig. 3, where the method includes the following steps:
1. and reading real-time updated intelligent ship data calculated every 10 minutes, wherein the intelligent ship data comprises the rotating speed of a host, the power of the host, the accumulated quantity of a flow meter at an inlet and an outlet of the host and the navigational speed.
2. Determining two main machines which are the most distant from the current moment to stop operating a stable interval:
(1) And (3) identifying the stop of the host: the main engine rotating speed =0, the main engine power =0, and the navigational speed <1kn;
(2) Identifying two host computer operation stopping stable intervals which are nearest to the current moment, comprising the following steps:
determining the latest 1 st host shutdown interval A1 (T) 1s ，T 1e ) The start time T meeting the condition of stopping operation of the host 1s And an end time T 1e ；
Determining the latest 2 nd host stop operation interval A2 (T) 2s ，T 2e ) The starting time T meeting the condition of stopping the operation of the host 2s And end time T 2e 。
3. Calculating the oil consumption errors of the stable sections A1 and A2 when the two hosts stop running;
(1) Calculating the latest 1 st host computer stop operation interval (T) 1s ，T 1e ) Oil consumption L1:
L1＝(M 1e to -M For 1s )-(M Out of 1e -M Goes out for 1s )
Note: m 1e to Indicating inlet flow meter at T 1e Cumulative amount of time, M Into 1s Indicating inlet flow meter at T 1s Cumulative amount of time, M Out of 1e Indicating the outlet flow meter is at T 1e Cumulative amount of time, M Goes out for 1s Indicating the outlet flow meter is at T 1s Cumulative amount of time of day
(2) Calculate the nearest 2 nd hostShutdown interval (T) 2s ，T 2e ) Oil consumption L2:
L2＝(M to 2e -M Into 2s )-(M Out of 2e -M Go out for 2s )
Note: m To 2e Indicating inlet flow meter at T 2e Cumulative amount of time, M Into 2s Indicating inlet flow meter at T 2s Cumulative amount of time, M Out of 2e Indicating outlet flow meter at T 2e Cumulative amount of time, M Go out for 2s Indicating outlet flow meter at T 2s The accumulated amount 4 of time, the total oil consumption between the stable interval A1 and A2 of the stop operation of the two main engines, namely T 2e To T 1s Total oil consumption over time;
(1) Calculating the oil consumption S1 of the error of every 10 minutes of the 1 st main engine stop operation stable interval A1
S1＝L1/(T 1e -T 1s )
(2) Calculating the oil consumption S2 of the error of every 10 minutes of the latest 2 nd main engine stop operation stable interval A2
S2＝L2/(T 2e -T 2s )
(3) Calculating an error oil consumption change formula every 10 minutes between two main engine operation stopping stable intervals A1 and A2:
S t ＝(S1-S2)/((T 1e +T 1s )/2-(T 2e +T 2s )/2)*(t+(T 2e +T 2s )/2)
(4) Calculating the total oil consumption between the stable intervals A1 and A2 of the stop operation of the two main engines, namely T 2e To T 1s Total oil consumption over time L12:
5. calculating the current time T now Oil consumption F to the first 1 hour 1h ；
(1) If the host is in the period of stopping operation at the current moment, namely the rotating speed of the host =0, the power of the host =0, and the navigational speed is less than 1kn;
F 1h ＝0
(2) If the host computer is in the non-stop state at the current moment,
note: m is a group of Let in now Indicating the inlet flow meter at the current time T now Cumulative amount of (2), M Let in now-1 Indicating that the inlet flow meter was one hour T before the current time now-1 Cumulative amount of time, M Go out now Indicating the outlet flow meter at the current time T now Cumulative amount of (2), M Goes out of now-1 Indicating that the outlet flow meter was one hour T before the current time now-1 Cumulative amount of time of day.
The embodiment also provides an application of the method and the device, for example, a certain ship in a normal running state is monitored, the 2022-02-13-12;
the system identifies that the ship has a main engine stop running state 1, a stop state 1 starting time 2022-02-1210, a main engine stop running end time 2022-02-12, an inlet cumulative amount F1 at the beginning of the stop state 1, an inlet cumulative amount F2 at the end of the stop state 1, an outlet cumulative amount G1 at the beginning of the stop state 1 and an outlet cumulative amount G2 at the end of the stop state 1 in 2022-02-12;
the system identifies that the ship has a host stop running state 2, a stop state 2 starting time 2022-02-1110, a host stop running end time 2022-02-11 12, an inlet cumulative amount F3 at the beginning of the stop state 2, an inlet cumulative amount F4 at the end of the stop state 2, an outlet cumulative amount G3 at the beginning of the stop state 2, and an outlet cumulative amount G4 at the end of the stop state 2 at 2022-02-11;
calculating the total oil consumption H after the correction from the end time of the stop state 2 to the start time of the stop operation state 1, namely 2022-02-11 to 2022-02-12, according to the value;
and calculating to obtain the total oil consumption K of the current hour, namely the total oil consumption from 2022-02-13 to 2022-02-13 from the following steps.
It should be noted that the method and apparatus for checking oil consumption of a marine main engine according to the present invention are applicable to a marine vessel including a single main engine or a plurality of main engines in the prior art, that is, the main engine refers to a single main engine or a plurality of main engines on the marine vessel; a single host of the ship is provided with a pair of host inlet and outlet flow meters, and a plurality of host of the ship are correspondingly provided with a plurality of pairs of host inlet and outlet flow meters; that is, the hosts correspond to the inlet and outlet flowmeters of the hosts, one host is correspondingly provided with a pair of inlet and outlet flowmeters, or a plurality of hosts are correspondingly provided with a plurality of pairs of inlet and outlet flowmeters of the hosts, for example, a ship has 2 hosts, each host must have a corresponding inlet and outlet flowmeter, and if the 2 hosts only have a pair of inlet and outlet flowmeters, the accurate oil consumption value of the host provided with the flowmeters can be obtained; if 2 host computers all have a pair of import and export flowmeters, then the accurate oil consumption value of the ship can be obtained.
In practical application, data of a plurality of hosts are obtained simultaneously, after the data comprise accumulated quantities of inlet and outlet flowmeters of all the hosts, whether errors occur in a flowmeter sensor is rapidly identified based on the oil consumption of a stable region when the hosts stop running, the errors of the oil consumption of each host are identified, error values are calculated, the oil consumption of the current host is calculated through a current oil consumption calculation model, so that an accurate oil consumption value is obtained, and the reduction of the oil consumption calculation accuracy caused by errors of the flowmeters is effectively avoided.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the principle of the present invention, and these modifications and amendments should also be considered as the protection scope of the present invention.
Claims (10)
1. A method for checking oil consumption of a ship main engine is characterized by comprising the following steps:
the first step, data acquisition: based on intelligent ship data, regularly acquiring ship data updated in real time, wherein the ship data comprises a host rotation speed, host power, accumulated amount of a host inlet and outlet flow meter and a navigation speed;
step two, error identification: calculating the oil consumption of a stable interval when the host stops running based on the accumulated quantity of the flow meters at the inlet and the outlet of the host, calculating the error value of the flow meter of the host in unit time, and bringing the calculated error value into the next error correction;
thirdly, error correction: when the oil consumption error exists, calculating the oil consumption error of the stable operation stopping interval, and correcting the total oil consumption between the stable operation stopping intervals through a correction formula; establishing a current oil consumption calculation model by taking a correction formula as a model;
step four, calculating the current oil consumption: and after the calculation instruction is obtained, calling the current oil consumption calculation model according to the time period required in the actual operation, and calculating the oil consumption from the required time period to the current time, namely the current oil consumption.
2. The method for checking the oil consumption of the ship main engine according to claim 1, wherein the main engine operation stop stable interval is a time period when the ship is in a stable state of operation stop; in the second step, the error identification is identified based on the stable interval of the host computer stopping operation 2 times closest to the current time.
3. The method according to claim 2, wherein the latest 2 stable sections for the host machine to stop running are determined by judging the state of the host machine to stop running, wherein the conditions for judging the stop state are as follows: the main engine rotating speed =0, the main engine power =0, and the navigational speed <1kn;
and respectively recording the determined latest 2 stable operation stopping intervals as:
A1(T 1e -T 1s ) For the nearest 1 st host computer to stop operating in a stable interval, wherein T 1s To meet the start time of the host shutdown condition, T 1e Is the end time;
A2(T 2e -T 2s ) Stopping operation for the nearest 2 nd hostLine stability interval, wherein, T 2s To meet the start time of the host shutdown condition, T 2e Is the end time.
4. The method according to claim 3, wherein the oil consumption in the last 2 stable sections of the ship main engine is respectively recorded as:
A1(T 1e -T 1s ) L1= (M) 1e -M Into 1s )-(M Out of 1e -M Goes out for 1s )；
A2(T 2e -T 2s ) L2= (M) To 2e -M Into 2s )-(M Out of 2e -M Go out for 2s )；
Wherein: m 1e Indicating inlet flow meter at T 1e Cumulative amount of time, M Into 1s Indicating inlet flow meter at T 1s Cumulative amount of time, M Out of 1e Indicating the outlet flow meter is at T 1e Cumulative amount of time, M Goes out for 1s Indicating the outlet flow meter is at T 1s Cumulative amount of time of day;
M to 2e Indicating inlet flow meter at T 2e Cumulative amount of time, M Into 2s Indicating inlet flow meter at T 2s Cumulative amount of time, M Go out 2e Indicating the outlet flow meter is at T 2e Cumulative amount of time, M Goes out for 2s Indicating outlet flow meter at T 2s Cumulative amount of time of day.
5. The method for checking the oil consumption of the ship main engine according to claim 1, 2, 3 or 4, wherein the intelligent ship data refers to a ship loading monitoring system including AIS, an engine room monitoring and alarming system, GPS data, a log data system and the like, and the step of acquiring the ship data updated in real time at regular intervals refers to acquiring the ship data updated in real time at intervals of 10 minutes.
6. The method for checking oil consumption of a marine vessel main engine according to claim 1, 4 or 5, wherein the correction formula is based on the formula of the change of the oil consumption per 10 minutes between the last 2 stable operation stop intervals A1 and A2
S t ＝(S1-S2)/((T 1e +T 1s )/2-(T 2e +T 2s )/2)*(t+(T 2e +T 2s )/2)
Obtained after integral correction:
l12 is the total oil consumption between 2 stable operation stop intervals A1 and A2, i.e. the total oil consumption in the time from T2e to T1 s: wherein S1 is the error oil consumption S1= L1/(T) every 10 minutes of the 1 st stable operation interval A1 recently 1e -T 1s )；
S2 is the error oil consumption S2= L2/(T) every 10 minutes of the 2 nd stable operation interval A2 2e -T 2s )。
7. The method for checking oil consumption of a marine main engine according to claim 1 or 6, wherein the current oil consumption calculation model comprises:
(1) If the rotating speed of the main engine at the current moment =0, the power of the main engine =0 and the navigational speed<1kn, the main engine is in a stop state, namely the current oil consumption F nh ＝0；
(2) If the host computer at the current time is in a non-stop state, calculating the oil consumption from the required time period to the current time according to the time period required in the actual operation, namely calculating the oil consumption n hours before the current time, namely the current oil consumption is
Wherein: m Let in now Indicating the inlet flow meter at the current time T now Cumulative amount of (2), M Let in now-n Indicating that the inlet flow meter is n hours T before the current time now-n Cumulative amount of time, M Go out now Indicating the outlet flow meter is at the current time T now Cumulative amount of (A), M Out of now-n Indicating an outletThe flowmeter is n hours T before the current time now-n Cumulative amount of time of day.
8. The method of checking oil consumption of a marine vessel main engine according to claim 7,
if the host computer is in the non-stop state at the current moment, calculating the oil consumption 1 hour before the current moment, namely the current oil consumption is
Wherein: m Let in now Indicating the inlet flow meter is at the current time T now Cumulative amount of (2), M Let in now-1 Indicating that the inlet flow meter was one hour T before the current time now-1 Cumulative amount of time, M Go out now Indicating the outlet flow meter at the current time T now Cumulative amount of (A), M Go out now-1 Indicating that the outlet flow meter was one hour T before the current time now-1 Cumulative amount of time of day.
9. A check device for oil consumption of a ship main engine is characterized by comprising:
a data acquisition module: the system comprises a data acquisition module, a data processing module and a data processing module, wherein the data acquisition module is used for acquiring real-time updated ship data in a timing manner based on intelligent ship data, and the ship data comprises a host rotating speed, host power, accumulated amount of a host inlet and outlet flow meter and navigational speed;
an error identification module: the method is used for calculating the oil consumption of the stable operation stopping interval of the host based on the accumulated quantity of the flow meters at the inlet and the outlet of the host, calculating the error value of the flow meter of the host in unit time, and bringing the calculated error value into the next error correction;
an error correction module: when the oil consumption error exists, the method is used for calculating the oil consumption error of the operation stopping stable interval and correcting the total oil consumption between the operation stopping stable intervals through a correction formula; the method also comprises a current oil consumption calculation model established by taking a correction formula as a model;
the current oil consumption calculation module: and the current oil consumption calculation model is called by the user according to the required time period in the actual operation after the calculation instruction is obtained, and the oil consumption from the required time period to the current time is calculated to be the current oil consumption.
10. The method for checking oil consumption of a marine vessel main engine according to claim 1 or the apparatus for checking oil consumption of a marine vessel main engine according to claim 9, wherein the marine vessel includes a marine vessel including a single main engine or a plurality of main engines, and the main engine is the single main engine or the plurality of main engines on the marine vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310107322.5A CN115950509A (en) | 2023-02-10 | 2023-02-10 | Method and device for checking oil consumption of ship main engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310107322.5A CN115950509A (en) | 2023-02-10 | 2023-02-10 | Method and device for checking oil consumption of ship main engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115950509A true CN115950509A (en) | 2023-04-11 |
Family
ID=87286110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310107322.5A Pending CN115950509A (en) | 2023-02-10 | 2023-02-10 | Method and device for checking oil consumption of ship main engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115950509A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117168558A (en) * | 2023-11-03 | 2023-12-05 | 山东奥斯登房车有限公司 | High-end intelligent real-time monitoring method for fuel consumption of caravan |
-
2023
- 2023-02-10 CN CN202310107322.5A patent/CN115950509A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117168558A (en) * | 2023-11-03 | 2023-12-05 | 山东奥斯登房车有限公司 | High-end intelligent real-time monitoring method for fuel consumption of caravan |
| CN117168558B (en) * | 2023-11-03 | 2024-01-16 | 山东奥斯登房车有限公司 | High-end intelligent real-time monitoring method for fuel consumption of caravan |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7047125B1 (en) | Internal combustion engine performance calibration systems | |
| CN110671176B (en) | Carbon capacity calculation method and calculation module based on oxygen concentration change | |
| US20040236496A1 (en) | Method to determine tdc in an internal combustion engine | |
| CN115950509A (en) | Method and device for checking oil consumption of ship main engine | |
| US8677748B2 (en) | Fresh air flow estimation | |
| US4055995A (en) | Engine air-in-fuel diagnostics | |
| JP5164954B2 (en) | Device diagnostic method and device diagnostic device | |
| CN110529249A (en) | Air throttle method for detecting abnormality and equipment | |
| GB2134265A (en) | Generating rotational speed data for an internal combustion engine | |
| CN111075586A (en) | Method for detecting intake flow sensor | |
| CN102741768B (en) | Method for predicting the duration of a future time interval and circuit device therefor | |
| EP2530287A1 (en) | Apparatus and method for estimating a combustion torque of an internal combustion engine | |
| EP3686417B1 (en) | Injector injection quantity control device, injector injection quantity control method, program and storage medium | |
| KR950033015A (en) | Method and apparatus for detecting cylinder inflow air of internal combustion engine, and method and apparatus for fuel control of internal combustion engine using the method and apparatus | |
| CN100398803C (en) | Position correction controller of rotary body | |
| JPH08105781A (en) | Measurement-error correcting method | |
| RU2331048C2 (en) | Method and system of measurement, recording and control over internal combustion engine fuel consumption and engine state monitoring | |
| CN116447028A (en) | Control method and device for EGR rate of engine system, electronic equipment and storage medium | |
| JPH0511316Y2 (en) | ||
| CN116046119A (en) | Fault diagnosis system for marine fuel host mass flowmeter | |
| JP4299460B2 (en) | Calculation method of indicated mean pressure of internal combustion engine | |
| CN115013173B (en) | Exhaust gas flow determination method, device, storage medium and ECU | |
| JP2627842B2 (en) | Diagnosis method for supply / exhaust system of ship engine | |
| JPS61116051A (en) | Method for processing engine control signal | |
| CN116337185A (en) | Flow calculation method and device and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |