KR20130073456A - Safety device with emergency start interlock for disel engine - Google Patents

Safety device with emergency start interlock for disel engine Download PDF

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Publication number
KR20130073456A
KR20130073456A KR1020110141304A KR20110141304A KR20130073456A KR 20130073456 A KR20130073456 A KR 20130073456A KR 1020110141304 A KR1020110141304 A KR 1020110141304A KR 20110141304 A KR20110141304 A KR 20110141304A KR 20130073456 A KR20130073456 A KR 20130073456A
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KR
South Korea
Prior art keywords
pinion
valve
engine
emergency
air
Prior art date
Application number
KR1020110141304A
Other languages
Korean (ko)
Inventor
정성철
Original Assignee
현대중공업 주식회사
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 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020110141304A priority Critical patent/KR20130073456A/en
Publication of KR20130073456A publication Critical patent/KR20130073456A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/10—Safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/10—Safety devices
    • F02N11/101—Safety devices for preventing engine starter actuation or engagement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
    • F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
    • F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement
    • F02N15/066—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement the starter being of the coaxial type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N9/00—Starting of engines by supplying auxiliary pressure fluid to their working chambers
    • F02N9/04—Starting of engines by supplying auxiliary pressure fluid to their working chambers the pressure fluid being generated otherwise, e.g. by compressing air

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

PURPOSE: An emergency start safety system of the diesel engine is provided to block compressed air, which passes through a pinion air supply pipe, by means of an on-off valve at the time of the serving of vehicle, and then make a start pinion to be separated from a gear rim, such that a start motor is not operated, thereby blocking the starting of diesel engine. CONSTITUTION: An emergency start safety system of the diesel engine includes an on-off valve (12). If an engine start signal is given, a solenoid valve opens a pinion air supply pipe and the compressed air makes the start pinion contact with the gear rim of fly wheel, such that the on-off valve controls the driving of air start motor. If an emergency driving valve (5) is pressed at the time of the serving of engine, and the pinion of turning gear contacts with the gear rim of the fly wheel, the on-off valve blocks the compressed air, which passes through the pinion air supply pipe, and makes the start pinion to be separated from the gear rim, such that the start motor is not operated.

Description

Safety device with emergency start interlock for disel engine

The present invention relates to an emergency start safety device for a diesel engine, and more particularly, to prevent human and physical damage by adding a safety device for preventing an emergency start that may occur during the disassembly and maintenance of a diesel engine. To emergency start safety of diesel engines.

For medium diesel engines, an air start motor is used to start the engine.

The engine starting principle is that when the air start motor is operated using compressed air, the pinion of the air start motor protrudes by pneumatic contact with the gear rim of the flywheel connected to the engine crankshaft, and the engine rotates at high speed after the pinion is contacted. Start the engine by raising it to the required revolutions per minute (RPM).

This series of operations can be operated using the start button provided on the operating panel of the engine or through the manual button of the solenoid valve installed on the air start motor for engine emergency start.

The former method, using the start button, is used during normal start-up, with a safety interlock function that allows the engine to operate only when the engine is ready to start.

In the latter case, which uses a manual button using a solenoid valve, the latter type is used in an emergency. When the button is operated, the engine can be started by ignoring the safety interlock function prepared by the engine.

Here, among the safety interlock functions, the engine can not be started by the former starting method when the turning gear is in contact, but the engine can be started in the latter case.

When the engine is started while the turning gear is fastened to the gear rim of the flywheel, there is a problem that a safety accident may occur due to component damage.

Therefore, in order to improve this, it is necessary to improve the structure to prevent the parts damage and safety accidents by providing a safety device to prevent inadvertent starting of the engine while the engine is stopped for maintenance. have.

The present invention has been made to solve the above problems, an object of the present invention is to add a non-emergency start device of a diesel engine using an air start motor to prevent component damage, and to enable safe engine maintenance It is to provide emergency starting safety devices for diesel engines.

In order to achieve the above object, the present invention provides an on-off solenoid valve that opens the pinion air supply pipe when the engine start signal is given so that the compressed air contacts the start pinion with the gear rim of the flywheel and controls the driving of the air start motor. In the emergency starting safety device of a diesel engine provided with a valve, when the engine is being serviced, the pinion air supply pipe is connected by the on-off valve when the pinion of the turning gear is in contact with the gear rim of the flywheel when the emergency driving valve is pressed. Block the compressed air passing through the start pinion to fall off the gear rim so that the start motor is not driven.

Further, in the present invention, the on-off valve is preferably located on the signal line before the signal passing through the emergency drive valve is transmitted to the air start motor.

As described above, the present invention has the effect of preventing the breakage of parts and safety accidents by blocking the start of the diesel engine that may occur due to carelessness during engine maintenance.

1 is a perspective view of an emergency start safety device for a diesel engine according to the present invention;
2 is a side view of an emergency starting safety device of a diesel engine according to the present invention;
3 shows a compressed air system including an emergency start safety device of a diesel engine to which the present invention is applied.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

1 is a perspective view of an emergency start safety device for a diesel engine according to the present invention, FIG. 2 is a side view of an emergency start safety device for a diesel engine according to the present invention, and FIG. 3 is an emergency start safety device for a diesel engine to which the present invention is applied. It shows a compressed air system comprising a.

1 and 2, the present invention is an air start motor 20, start pinion 30, flywheel 40, pinion air supply line 51, main valve air supply line 53 and turning gear 60 is made.

The air start motor 20 is driven by the supply of compressed air.

The start pinion 30 is formed on one side of the air start motor 20 to move back and forth according to whether compressed air is supplied to contact the gear rim 41 formed at the edge of the flywheel 40.

The flywheel 40 has a gear rim 41 formed along its edge, and the gear rim 41 and the start pinion 30 come into contact with each other to rotate.

The pinion air supply pipe 5b1 is formed to have a predetermined length and diameter for supplying compressed air to the start pinion 30.

The start pinion 30 is provided with a main valve air supply pipe 53 which goes from the start pinion 30 to the valve.

The turning gear 60 is formed with a turning gear pinion 61 in contact with the gear rim 41 of the flywheel 40.

The center of the flywheel 40 is connected to the crankshaft 70, thereby driving the crankshaft 70 by the rotation of the flywheel 40.

The engine is started while the crankshaft 70 is driven.

According to the present invention having such a configuration, the compressed air is not transmitted to the pinion air supply pipe 51, thereby preventing the flywheel 40 from rotating so as to block starting of the engine.

In particular, when the turning gear pinion 61 is in contact with the gear rim 41, an on-off valve 12, which is a solenoid valve operated by whether or not a current is supplied, is connected to the pinion air supply pipe 51. By the operation of the off valve 12 is made of a structure that blocks the transmission of compressed air to the pinion air supply pipe 51 (see Fig. 3).

Looking at the engine start sequence in detail with reference to Figure 3 as follows.

3 shows a compressed air system including an emergency start safety device of a diesel engine to which the present invention is applied.

When the engine start signal comes in, compressed air passes through the air starter 1 to bring the start pinion 30 into contact with the gear rim 41.

The compressed air having the start pinion 30 in contact with the gear rim 41 passes through the air starter 1 to open the relay valve 2 so that the main compressed air rotates the air start motor 20 to start the engine. To be done.

If the emergency drive valve 5 is driven even in the state where starting is stopped, the engine is started in accordance with the above-described starting procedure.

Therefore, the on-off valve 12 is installed before the emergency drive valve 5 is operated so that the turning gear pinion 61 of the turning gear 60 is in contact with the gear rim 41 of the flywheel 40. Also to block the compressed air supplied to the start pinion (30).

3, the on-off valve 12 is located on the signal line before the signal passing through the emergency drive valve 5 to the air start motor 20, so that the emergency drive valve ( The operation signal of 5) can be blocked from being transmitted to the air start motor 20.

It is needless to say that the present invention is not limited to the above embodiments and many modifications may be made by those skilled in the art within the scope of the present invention.

1: air start motor 2: relay valve
3: on-off valve 4: governor
5: emergency drive valve 6: stop cylinder of fuel feed pump
7: air filter 8: fuel storage limiter valve
9: fuel storage limiter 10: starting air reduction unit
11: on-off valve 12: on-off valve
20: air start motor 30: start pinion
40: flywheel 41: gear rim
51: pinion air supply line 53: main valve air supply line
60: turning gear 61: turning gear pinion
70: crankshaft

Claims (2)

When the engine start signal is given, the solenoid valve opens the pinion air supply line so that compressed air contacts the start pinion on the gear rim of the flywheel and the emergency start safety of the diesel engine with an on-off valve that controls the operation of the air start motor. In the device,
If the emergency drive valve is pressed during engine maintenance and the pinion of the turning gear is in contact with the gear rim of the flywheel, the start pinion is geared by blocking the compressed air passing through the pinion air supply line by the on-off valve. Emergency start safety device for a diesel engine, characterized in that the start motor is not driven by being separated from the engine. The method of claim 1,
And the on-off valve is located on a signal line before a signal passing through the emergency drive valve is transmitted to the air start motor.
KR1020110141304A 2011-12-23 2011-12-23 Safety device with emergency start interlock for disel engine KR20130073456A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110141304A KR20130073456A (en) 2011-12-23 2011-12-23 Safety device with emergency start interlock for disel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110141304A KR20130073456A (en) 2011-12-23 2011-12-23 Safety device with emergency start interlock for disel engine

Publications (1)

Publication Number Publication Date
KR20130073456A true KR20130073456A (en) 2013-07-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020110141304A KR20130073456A (en) 2011-12-23 2011-12-23 Safety device with emergency start interlock for disel engine

Country Status (1)

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KR (1) KR20130073456A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160001439A (en) 2014-06-27 2016-01-06 두산엔진주식회사 Diesel engine with engine starting system
KR20160003289U (en) 2015-03-17 2016-09-27 현대중공업 주식회사 Sealing cover assembly of ship engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160001439A (en) 2014-06-27 2016-01-06 두산엔진주식회사 Diesel engine with engine starting system
KR20160003289U (en) 2015-03-17 2016-09-27 현대중공업 주식회사 Sealing cover assembly of ship engine

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