KR20160093364A - Tester for measuring water included in lubricant in the ship engine and the test method - Google Patents

Tester for measuring water included in lubricant in the ship engine and the test method Download PDF

Info

Publication number
KR20160093364A
KR20160093364A KR1020150014263A KR20150014263A KR20160093364A KR 20160093364 A KR20160093364 A KR 20160093364A KR 1020150014263 A KR1020150014263 A KR 1020150014263A KR 20150014263 A KR20150014263 A KR 20150014263A KR 20160093364 A KR20160093364 A KR 20160093364A
Authority
KR
South Korea
Prior art keywords
lubricating oil
pipe
marine engine
opening
engine lubricating
Prior art date
Application number
KR1020150014263A
Other languages
Korean (ko)
Inventor
이상윤
Original Assignee
(주)호현
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by (주)호현 filed Critical (주)호현
Priority to KR1020150014263A priority Critical patent/KR20160093364A/en
Publication of KR20160093364A publication Critical patent/KR20160093364A/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/10—Indicating devices; Other safety devices
    • 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
    • G01M15/02—Details or accessories of testing apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance

Landscapes

  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

The present invention relates to a tester for measuring water included in a lubricant in a ship engine and a test method. According to a first embodiment of the present invention, a tester for measuring water included in a lubricant in a ship engine comprises a circulation pump, a ship engine lubricant storage tank, a test container, a first opening and closing valve, a second opening and closing valve, a third opening and closing valve, and a fourth opening and closing valve. According to the present invention, when using the tester for measuring water included in a lubricant in a ship engine, water included in a lubricant in a ship engine can be measured, wherein the lubricant is continuously circulated and moved in a condition similar to a moving environment of a lubricant in a ship engine used in a real ship.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus for inspecting water content of a lubricating oil for a ship engine,

The present invention relates to an apparatus for inspecting the water content of a lubricating oil for a marine engine, and more particularly to a system for checking the water content of a marine engine lubricating oil for a marine engine, (Or measurement) of water content of a marine engine lubricating oil and a method for inspecting the water content of the marine engine lubricating oil.

Generally, marine diesel engines are classified according to operation speed. Usually low speed is less than 350RPM, medium speed is 350 ~ 1,000RPM, and high speed is more than 1,000 RPM. Low speed engines are used for propulsion of container ships and tankers of 10,000 tons or more. Medium and high speed engines are generally used for caterpillars and fishing boats, and are also used as auxiliary engines.

Internal combustion engines, including marine engines, have their own lubrication systems to attenuate the friction and wear of each of the friction parts and to facilitate the operation of the equipment.

The lubrication system of the marine engine mainly includes a system oil system which acts on the lubrication surface of the crankcase and the cam drive part, and a cylinder oil system which acts on the lubrication surface of the piston and the cylinder wall surface.

Major operational faults in the lubrication system of marine engines include excessive wear of cylinders, pistons and rings, excessive deposits on the pistons and cylinders, port clogging, deposits of oil cooling pistons and valve systems, bearing damage, Pollution and so on.

If the lubricating oil of the engine, which is the power source of the ship, is not timely exchanged for the reasons stated above, it may cause the shutdown due to piston ring breakdown, engine power drop, piston sticking, noise and vibration.

 Particularly, when the ratio of the water content of the marine engine lubricating oil is increased, the lubricating performance is deteriorated, so that a metal touch that is unfavorable to the marine engine occurs, which decreases the life of the engine. A device that can be inspected in advance is required.

In this regard, Doosan Engine Co., Ltd. has a patent application No. 10-2009-0116431, entitled " Sensor module for detecting moisture contained in lubricating oil of a marine engine and moisture sensor unit using the sensor module " A sensor module for detecting moisture contained in the lubricating oil of the marine engine, a moisture sensor for detecting moisture contained in the lubricating oil of the marine engine, and an initial capacitance of the water sensor 320 to adjust a value of a specific initial capacitance And a variable capacitor 310 for outputting the output signal.

However, in the conventional marine engine lubricant inspecting apparatus using such a moisture sensor, a sensor is installed in a lubricating oil of a marine engine in a stationary state to measure the water content. Such a conventional inspecting method, however, It is difficult to measure the moisture content of the marine engine lubricating oil used in the actual ship. Therefore, the water content of the marine engine lubricating oil used in the actual marine vessel varies depending on the temperature change or the change in the flow rate of the marine engine lubricating oil There was no equipment to inspect the paper.

1. Patent Application No. 10-2009-0116431 entitled "Sensor module for detecting moisture contained in lubricating oil of a marine engine and moisture sensor unit using the sensor module"

The present invention has been proposed in order to solve the problems of the prior art, and it is an object of the present invention to provide a device for checking the water content of a marine engine lubricating oil under an environment similar to that of a lubricating oil supplied to an actual marine engine by controlling temperature and flow speed of the marine engine lubricating oil, ≪ / RTI >

To this end, according to the present invention, there is provided an apparatus for inspecting the water content of a marine engine lubricating oil, which is capable of inspecting the water content of the marine engine lubricating oil by using a water sensor while heating the marine engine lubricating oil to a predetermined temperature and then flowing the oil. And a method thereof.

The apparatus for inspecting the water content of marine engine lubricant oil, which is the first embodiment of the present invention,

A circulation pump having a suction pipe, a discharge pipe branched from the first pipe and the second pipe,

A marine engine lubricating oil storage tank in which one end of the upper end communicates with the first pipe and one side of the lower end thereof communicates with the suction pipe,

A test pipe having a third pipe communicating with the second pipe at one side thereof and communicating with one side of the upper surface portion of the lubricating oil storage tank of the marine engine and at least one through-hole for inserting a moisture sensor outside, ,

A first opening / closing valve for opening / closing the suction pipe,

A second on-off valve for opening and closing the first pipe,

A third open / close valve for opening / closing the second pipe,

And a fourth open / close valve for opening / closing the third pipe,

The circulation pump is operated while the first and second open / close valves are opened and the third and fourth open / close valves are closed to circulate the marine engine lubricant oil stored in the marine engine lubricant storage tank for a predetermined time, 3 and 4, and adjusting the opening degree of the second valve while adjusting the amount of lubricating oil of the marine engine flowing into the test vessel, a moisture sensor is attached to the through-hole formed outside the test vessel And the degree of water content of the marine engine lubricating oil introduced into the test vessel is inspected.

In the first embodiment of the present invention, the ship engine lubricating oil storage tank further includes a heating unit installed inside the ship engine lubricating oil storage tank, and the ship engine lubricating oil stored in the ship engine lubricating oil storage tank is heated to a predetermined temperature by using the heating unit.

In addition, in the first embodiment of the present invention, the amount of the marine engine lubricating oil introduced into the test vessel can be adjusted by adjusting the degree of opening of the second valve.

In the second embodiment of the present invention,

A circulation pump having a suction pipe, a discharge pipe branched from the first pipe and the second pipe,

A marine engine lubricating oil storage tank in which one end of the upper end communicates with the first pipe and one side of the lower end thereof communicates with the suction pipe,

A test pipe having a third pipe communicating with the second pipe at one side thereof and communicating with one side of the upper surface portion of the lubricating oil storage tank of the marine engine and at least one through socket for inserting a moisture sensor outside, A method for inspecting the degree of water content of the marine engine lubricating oil stored in the marine engine lubricating oil storage tank,

A third on-off valve for opening and closing the second pipe, a fourth on-off valve for opening and closing the third pipe, a second on-off valve for opening and closing the on- Heating the marine engine lubricating oil stored in the marine engine lubricating oil storage tank to a predetermined temperature in a state that the marine engine lubricating oil is closed;

Wherein the third and fourth valves are opened and the opening degree of the second valve is adjusted to adjust the amount of the marine engine lubricating oil introduced into the test vessel, And inspecting the degree of water content of the marine engine lubricating oil flowing into the test vessel.

In the second embodiment of the present invention, the flow rate of the marine engine lubricating oil flowing into the test vessel can be adjusted while varying the suction force of the circulation pump.

In the case of using the apparatus for inspecting the degree of water content of a lubricating oil for a ship engine according to the present invention, it is possible to measure the water content of a ship engine lubricating oil that circulates continuously under conditions similar to the flow environment of a ship engine lubricating oil used in a real ship It is possible to test under substantially the same conditions as the actual conditions.

1 is an embodiment of an apparatus for inspecting the water content of a marine engine lubricating oil proposed in the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus for inspecting the water content of a marine engine lubricating oil and its inspection method to be carried out in the present invention will be described with reference to the drawings.

1 is an embodiment of an apparatus for inspecting the water content of a marine engine lubricating oil proposed in the present invention.

As shown in the drawing, the apparatus for inspecting the water content of a marine engine lubricating oil according to the present invention includes a circulation pump 110, a marine engine lubricating oil storage tank 120, and a test vessel 130.

The circulation pump 110 has a suction pipe and a discharge pipe, and sucks the marine engine lubricating oil into the suction pipe and discharges the oil into the discharge pipe.

The discharge pipe is branched to the first pipe 41 and the second pipe 42 after being extended by a predetermined length as shown in the figure.

The marine engine lubricant storage tank 120 is designed as a cylindrical tank for storing marine engine lubricating oil, but its shape can be changed at any time.

As shown in the figure, one end of the upper end of the lubricating oil storage tank 120 of the marine engine is in communication with the first pipe 41, and the lower end of the lubricating oil storage tank 120 is in communication with the suction pipe.

As shown in the drawing, one side (left side in the figure) of the test vessel 130 designed as a cylindrical cylinder type communicates with the second pipe 42, and the other side (right side in the drawing) of the test vessel 130, Is connected to one side of the upper surface portion of the marine engine lubricant storage tank (120) through a third pipe (43).

At least one through-hole 32 is formed on the outer side of the test vessel for inspecting (or measuring) the water content of the ship engine lubricant oil passing through the inside of the test vessel 130 It is the part where the moisture sensor is inserted.

In the meantime, in the present invention, by using the first to fourth opening / closing valves 11, 12, 13 and 14 and passing through the suction valve, the first pipe 41, the second pipe 42 and the third pipe 43 Determine whether the ship engine lubricant passes or not.

That is, the first on-off valve 11 is installed on one side of the passage of the suction pipe to regulate the flow rate of lubricating oil of the marine engine flowing into the circulating pump 110 from the lubricating oil storage tank 120 of the marine engine, The third on-off valve 13 is provided on one side of the one pipe of the first pipe 41 to adjust the flow rate of the marine engine lubricating oil discharged from the discharge pipe of the circulating pump 110 and flowing into the marine engine lubricant storage tank 120, Closing valve 14 is attached to one side of the passage of the second pipe 42 to adjust the flow rate of the marine engine lubricating oil discharged from the discharge pipe of the circulation pump 110 and flowing into the test vessel 130, And the flow rate of the ship engine lubricating oil that is installed at one side of the passage of the pipe 43 and flows into the vessel engine lubricating oil storage tank 120 from the test vessel 130 is adjusted.

Hereinafter, the operation of the apparatus for inspecting the water content of the marine engine lubricating oil proposed in the present invention will be described.

The operation sequence of the apparatus of the present invention includes a first step of heating the marine engine lubricating oil stored in the marine engine lubricating oil storage tank 120; A second step of circulating heated vessel engine lubricant oil to the test vessel 130; And a third step of checking (or measuring) the water content of the marine engine lubricating oil moving in the test vessel 130 by coupling the water sensor to the through socket 32.

[Step 1: Heating Step]

A third opening and closing valve 13 for opening and closing the second pipe 42 is opened by opening the first opening and closing valve 11 for opening and closing the suction pipe and the second opening and closing valve 12 for opening and closing the first pipe 41, And the fourth open / close valve for opening and closing the third pipe are closed, the vessel engine lubricating oil stored in the vessel engine lubricating oil storage tank is heated to a predetermined temperature.

The heating process may be performed using a heating unit (not shown) installed inside the vessel engine lubricating oil storage tank 120 or may be heated using a heating unit installed outside the vessel engine lubricating oil storage tank 120, to be.

The heating process according to the present invention is for removing bubbles in advance in the circulation process of the lubricating oil of the marine engine. The heating temperature is about 60 to 70 degrees, but it can be changed depending on the kind of lubricant of the marine engine.

In the heating process of the present invention, the circulating pump 110 is operated. During the heating operation, the marine engine lubricating oil stored in the marine engine lubricating oil storage tank 120 is sucked through the suction pipe-> circulation pump 110 -> discharge pipe-> The first piping 41 -> the ship engine lube oil storage tank 120. That is, the movement route of the marine engine lubricant oil is the route 1 and the route 2 (FLOW1, FLOW2).

[Second step: circulation step]

The vessel engine lubricating oil is heated and circulated for a certain period of time within a predetermined temperature range and then the third and fourth valves 13 and 14 which are closed are opened to allow the marine engine lubricating oil to flow into the test vessel 130. At this time, the flow rate of the flow into the test vessel 130 is adjusted by adjusting the opening degree of the second valve 12. The degree of opening of the second valve 12 is controlled by adjusting the opening degree of the second valve 12 according to the design diameters of the first to fourth pipes 11 to 14, It is possible to appropriately control the flow rate of the marine engine lubricant.

By this circulation step, the marine engine lubricating oil at a predetermined flow rate stored in the marine engine lubricating oil storage tank 120 is sucked by the operation of the circulating pump 110 by the suction pipe-> the discharge pipe-> the second pipe 42-> (130) -> the third piping (43) -> the marine engine lubricant storage tank (120). That is, the movement paths of the ship engine lubricating oil to be inspected are Path 1, Path 3, and Path 4 (FLOW 1, FLOW 3, FLOW 4).

[Step 3: Inspection (or measurement)]

In the step of inspecting the lubricant oil content of the marine engine, a moisture sensor is inserted into at least one through-hole 32 formed on the outer side of the test vessel 130 to measure the water content of the marine engine lubricating oil in the test vessel 130 .

The present invention has an effect of measuring the degree of water content in a state substantially similar to the actual environment in relation to checking the water content of the ship engine lubricating oil in a flowing state unlike the conventional method.

The water sensor can use various kinds of sensors capable of measuring the moisture of the lubricating oil of the marine engine, and the through socket not used in the through socket is preferably sealed by using a moisture content measuring stopper or the like.

As shown in the drawing, the through-hole 32 is formed vertically or obliquely through the outer circumference of the closed cylindrical test vessel 130, So that it can be measured at an angle.

In the present invention, by adjusting the flow rate of the lubricating oil of the ship engine flowing into the test vessel 130 while controlling the suction force of the circulation pump 110 selectively and adjusting the development degree of the second valve 12, It is possible to check (or measure) the water content of the marine engine lubricating oil by assuming the same condition as the marine engine lubricating oil used in the real ship by controlling the flow rate of the marine engine lubricating oil flowing into the marine engine.

When the apparatus for testing water content of the lubricating oil for a ship engine according to the present invention as described above is used, the water content of a ship engine lubricating oil which circulates continuously in a condition similar to the flow environment of a ship engine lubricating oil used in a real ship It is possible to perform the test under substantially the same conditions as the actual conditions.

Although the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents. .

110: circulation pump
120: Marine engine lubricant storage tank
130: Test container
11: first opening / closing valve
12: second opening / closing valve
13: Third open / close valve
14: Fourth opening / closing valve
32: Through socket
41: First piping
42: Second piping
43: Third piping

Claims (5)

A circulation pump having a suction pipe, a discharge pipe branched from the first pipe and the second pipe,
A marine engine lubricating oil storage tank in which one end of the upper end communicates with the first pipe and one side of the lower end thereof communicates with the suction pipe,
A test pipe having a third pipe communicating with the second pipe at one side thereof and communicating with one side of the upper surface portion of the lubricating oil storage tank of the marine engine and at least one through-hole for inserting a moisture sensor outside, ,
A first opening / closing valve for opening / closing the suction pipe,
A second on-off valve for opening and closing the first pipe,
A third open / close valve for opening / closing the second pipe,
And a fourth open / close valve for opening / closing the third pipe,
The circulation pump is operated while the first and second open / close valves are opened and the third and fourth open / close valves are closed to circulate the marine engine lubricant oil stored in the marine engine lubricant storage tank for a predetermined time, 3 and 4, and adjusting the opening degree of the second valve while adjusting the amount of lubricating oil of the marine engine flowing into the test vessel, a moisture sensor is attached to the through-hole formed outside the test vessel And inspecting the degree of water content of the marine engine lubricating oil to be introduced into the test vessel. The method according to claim 1,
Further comprising a heating unit installed inside the marine engine lubricating oil storage tank, wherein the marine engine lubricating oil stored in the marine engine lubricating oil storage tank is heated to a predetermined temperature by using the heating unit. Inspection device. 3. The method according to claim 1 or 2,
And the amount of the lubricating oil of the marine engine to be introduced into the test vessel is adjusted by adjusting the degree of opening of the second valve. A circulation pump having a suction pipe, a discharge pipe branched from the first pipe and the second pipe,
A marine engine lubricating oil storage tank in which one end of the upper end communicates with the first pipe and one side of the lower end thereof communicates with the suction pipe,
A test pipe having a third pipe communicating with the second pipe at one side thereof and communicating with one side of the upper surface portion of the lubricating oil storage tank of the marine engine and at least one through socket for inserting a moisture sensor outside, A method for inspecting the degree of water content of the marine engine lubricating oil stored in the marine engine lubricating oil storage tank,
A third on-off valve for opening and closing the second pipe, a fourth on-off valve for opening and closing the third pipe, a second on-off valve for opening and closing the on- Heating the marine engine lubricating oil stored in the marine engine lubricating oil storage tank to a predetermined temperature in a state that the marine engine lubricating oil is closed;
Wherein the third and fourth valves are opened and the opening degree of the second valve is adjusted to adjust the amount of the marine engine lubricating oil introduced into the test vessel, And inspecting the degree of water content of the marine engine lubricating oil flowing into the test vessel. 5. The method of claim 4,
Wherein the flow rate of the marine engine lubricating oil flowing into the test vessel is adjusted while varying the suction force of the circulation pump.
KR1020150014263A 2015-01-29 2015-01-29 Tester for measuring water included in lubricant in the ship engine and the test method KR20160093364A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150014263A KR20160093364A (en) 2015-01-29 2015-01-29 Tester for measuring water included in lubricant in the ship engine and the test method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150014263A KR20160093364A (en) 2015-01-29 2015-01-29 Tester for measuring water included in lubricant in the ship engine and the test method

Publications (1)

Publication Number Publication Date
KR20160093364A true KR20160093364A (en) 2016-08-08

Family

ID=56711837

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150014263A KR20160093364A (en) 2015-01-29 2015-01-29 Tester for measuring water included in lubricant in the ship engine and the test method

Country Status (1)

Country Link
KR (1) KR20160093364A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180138419A (en) * 2017-06-21 2018-12-31 주식회사 포스코 Apparatus for measuring contamination level of lubricant oil and system for lubricant oil circulation including the same
KR20210089891A (en) * 2020-01-09 2021-07-19 동국대학교 경주캠퍼스 산학협력단 Oil analysis test system with oil sensors

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090116431A (en) 2008-05-07 2009-11-11 에이피시스템 주식회사 Wafer transfer apparatus for use in transfer chamber of multi-cluster module

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090116431A (en) 2008-05-07 2009-11-11 에이피시스템 주식회사 Wafer transfer apparatus for use in transfer chamber of multi-cluster module

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180138419A (en) * 2017-06-21 2018-12-31 주식회사 포스코 Apparatus for measuring contamination level of lubricant oil and system for lubricant oil circulation including the same
KR20210089891A (en) * 2020-01-09 2021-07-19 동국대학교 경주캠퍼스 산학협력단 Oil analysis test system with oil sensors

Similar Documents

Publication Publication Date Title
US10697337B2 (en) Filter diagnostics and prognostics
CN103376209B (en) The method for measuring crankcase rupture and fuel head
US6779505B2 (en) Method of employing instrumentation to efficiently modify a lubricant's flow rate or properties in an operating all-loss lubricating system
CN101333957B (en) Ship diesel closed type cooling water system risk prealarming method
KR20160093364A (en) Tester for measuring water included in lubricant in the ship engine and the test method
JP4742178B2 (en) Scuffing detection
US11821345B2 (en) Systems and methods for lubricant dilution detection
JP2010521626A5 (en)
CN110249211A (en) Combustion chamber leak detection external member in car engine
KR101611491B1 (en) Device for controlling lubricant quality and method for controlling the operation of an industrial apparatus using a lubricant
Witkowski The increase of operational safety of ships by improving diagnostic methods for marine diesel engine
KR20160104352A (en) Test method for measuring water included in lubricant in the ship engine by considering inseting angle of water sensor
RU2560972C2 (en) Method of in-place diagnostics of wear of bearings of internal combustion engine
KR20160098616A (en) System for monitoring the condition of lubricant oil used in ship engine
CA3212934A1 (en) Systems and methods for lubricant dilution detection
RU2677073C1 (en) Stand for the study of hydrocarbon liquids with complex rheological properties
JP2021120549A (en) Determination device, ship-ground communication system, and determination method
CA3115913A1 (en) System and method for separation of air from liquid
KR100894356B1 (en) Compressed air lubrication system for ship
JP4654122B2 (en) Lubricating oil inspection apparatus and lubricating oil inspection method
RU2819110C1 (en) Method and device for checking tightness of internal combustion engine cooling system
Qiao et al. Oil Aeration Measurement on a High-Speed Diesel Engine
Witkowski Diagnosis of injection system marine diesel engine with the use of the heat release characteristics
RU152389U1 (en) STAND FOR TESTING THE INTERNAL COMBUSTION ENGINE FOR HEAT SHOCK
Theisen et al. Gas Content in Lubricants of Modern Powertrain Systems-Development of a Continuous Volumetric Measurement Method

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application