engine starting system in diesel power plant ◂ Voltar
They can be started and stopped quickly. oil. In course of time, when electricity from the main grid becomes available in the town, the diesel unit can be shifted to some other area which needs power on a small scale. A supply of compressed air is stored in air reservoirs or 'bottles' ready for immediate use. This is an arrangement to rotate the engine initially while starting until firing starts and the unit runs with its own power. The combination of diesel engines and a steam turbine improves the efficiency of the power plant, producing eight percent more electricity from the same fuel consumption. The mixture of the compressed air and spray of fuel oil are ignited in the engine and the combustion takes place. This consists of a compressor, a filter for the supply of air and pipes for exhaust gases. 7. Diesel is converted into electrical energy. Federal regulations governing the hours of operation are different for emergency and non-emergency uses. The day tank is usually placed high so that diesel flows to engine under gravity. Diesel electric plants can be used as central station where the capacity required is small, Advantages and disadvantages of diesel power plant, Following are the advantages of diesel power plant. - Small sets are started manually by handles. They can be easily started or stopped at a short notice to meet the peak demand. The fuel oil is supplied from the tank through the filter to the fuel injectors. Hence it can be quickly installed and commissioned, while the erection and starting of a steam power plant or hydro-plant takes a fairly long time. Schematic diesel engine power plant 17. In the exhaust system, a silencer is provided to reduce the noise. The function of the air filter is to remove the dust from the air which is taken by the engine. The hot water leaving the jacket is passed through the heat exchanger. engine. 8. 5. This site uses Akismet to reduce spam. It includes lubricating oil tank, pumps, filters and lubricating In oil bath type of filters, the air is swept over a bath of oil so that dust particles get coated. This includes the silencers and connecting ducts. Fuel system 5. In this post, you'll learn about what is a solar power plant and different types of solar power plants. • Filter the fuel • Meter the correct quantity of the fuel to be injected • Time the injection process • Regulate the fuel supply • Secure fine atomization of fuel oil • Distribute the atomized fuel properly in the combustion; chamber. Location of the plant is near the load center. The engine is started from cold condition whit the help of an air compressor. 14. For starting a diesel engine, initial rotation of the engine shaft is required. the exhaust gases may be used for heating oil or air supplied to the engine. Can respond to varying loads without any difficulty. The diesel power plant essentially consists of the following components: 1. The heat from the heat exchanger is carried away by the raw water circulated through the heat exchanger and is cooled in the cooling tower. The diesel electric power plants are ch briefly used in the following field. Engine starting system Diesel engine used in diesel power plants is not self starting. Unhygienic emissions. Diesel electric plants in the range of 2 to 50 MW capacities are used as central stations for small electric supply networks and used as a standby to hydroelectric or thermal plants where continuous power supply is needed. of moving parts and reduce the wear and tear of the engine parts. In the diesel power plant, diesel engine used is not self-starting. These plants can be located very nearer to the load centres. Capacity is restricted. These include: meeting peak power demands by having generating sets which can be started and brought in quickly; having a reliable self-starting power source to restart other This raises the possibility that power plant developers will continue to follow the pattern of the 1990s and rely heavily on natural gas plants to meet the need for new power generation.! diesel plant can be installed to supply power to villages. High maintenance and lubrication cost . Easier lubrication system. Starting air system for diesel engine - how it works Diesel engines are started by supplying compressed air into the cylinders in the appropriate sequence for the required direction. In the cold conditions, the diesel engine is started by delivering the air. The air and fuel is mixed inside the engine and the charge is ignited due to high compression inside the engine cylinder. For small DG set, the initial rotation of the shaft is provided by handles but for large diesel power station. system of diesel electric power plant. The diesel power plant essentially consists of the following components: It is the main component of the plant which develops the Air filter and supercharger The air filter is used to remove the dust from the air which is taken by the engine. This is used to start the engine in cold conditions by supplying the air. Diesel is again filtered before being injected into the engine by the fuel injection pump. Diesel engine power plants are installed where supply of coal and water is not available in sufficient quantity. In the lubrication system the oil is pumped from the lubricating oil tank through the oil cooler where the oil is cooled by the cold water entering the engine. Starting using Compressed Air system: This system is commonly used for starting the large diesel engines employed for stationary power plant service. Hydraulic seals - Definition, Types, Diagram , Function, Failure, Application. 6. In the air filter, dust, dirt from the air is filtered and only clean air is sent to the diesel engine. 9. Diesel engines have found their application in every field of electricity generation, water pumping etc. Engine starting system includes air compressor and starting air tank. The injected fuel gets ignited and combustion takes place. Introduction to Slotting Machine : (d) Emergency plant: During power interruption in a vital unit like a key industrial plant or a hospital, a diesel electric plant can be used to generate the needed power. The machine operates... LearnMech.Com is a Mechanical Project-oriented platform run by Sachin Thorat who is a B-Tech Graduate in Mechanical Engineering. Saif M. is a Mechanical Engineer by profession. Starting of the diesel engine includes the air tanks along with the air compressor. Following are the advantages of a diesel power plant: Following are the disadvantages of a diesel power plant: That’s it, thanks for reading. Since oil is a liquid it has the tendency to 'leak' through every gas/slot it finds during movement. Cannot be of very big size. workshops and garages. Lubricating system 7. This system provides proper control of water circulation all around the diesel engines to keep the engine temperature reasonably at a low level. • Liquid fuel diesel plants in a resultant non-degraded air-shed: • Plants 3…50 MWth (General EHS Guidelines) • NO x: 1460 … 1600 mg/Nm 3, dry, 15% O 2 for engine bore below 400 mm • NO x: 1850 mg/Nm 3, dry, 15% O 2 for engine bore at or exceeding 400 mm • Gas diesel engine plants: 1600 mg/Nm3 The power plant produces a total output of 88 MW. The fuel oil may be supplied at the plant site by trucks, road, rail, tank etc. Unlike a gasoline engine, a diesel engine does not require an ignition system because in a diesel engine the fuel is injected into the cylinder as the piston comes to the top of its compression stroke. Lubrication system It includes oil pumps, oil tanks, coolers and pipes. For starting the engine initially, the various things used are compressed air, battery, a self-starter or electric motor. The atmosphere air enters inside the combustion chamber during the suction stroke and the fuel is injected through the injection pump. MAN Diesel & Turbo (Germany) 250 Years Diesel History, World Leading Maker 4-Stroke Engine Lineup up to 19MW 2-Stroke Engine Lineup up to 80MW Niigata Power Systems (Japan) 110 Years Diesel History, World Class Maker 4-Stroke Engine Lineup up to 12MW Specialized in Gas Engine Manufacture STX Engine, STX Heavy Industries (Korea) 4.4.6 Performance Testing of Diesel Engine Power Plant 4.5 Summary 4.6 Answers to SAQs 4.1 INTRODUCTION A generating station in which diesel engine is used as the prime mover for the generation of electrical energy is known as diesel power station. The function of the supercharger is to increase the pressure of the air supplied to the engine and thereby the power of the engine is increased. Starting a small diesel is easy but for larger engines, we need a special mechanism dedicated to this only. Save my name and email in this browser for the next time I comment. Thank you For Visiting. Explain how diesel power plants are used for starting power plant. The slotter or slotting machine is also a reciprocating type of machine tool similar to a shaper. Diesel Generator 12. High efficiency of energy conversion from fuel to electricity. At the end of compression stroke, fuel is injected. More efficient than the steam power plant. Efficiency at part loads is also higher . Generally, two-stroke engines are used for diesel power plants. It is worth taking a few time to read it. The purpose of the cooling system is to carry the heat from the engine cylinder and to keep the temperature of the cylinder in the safe range and extend its life. The hot water from the jacket is cooled in cooling ponds and is re-circulated again. read more : Why Diesel engines are Not used in Motor Bikes or Mopeds ? High operating cost. Disadvantages in in stalling diesel units for power generation . Oil under pressure is moving in every hydraulic circuit. connecting pipes. Small sets are started manually by handles but for larger units, compressed air is used for starting. He is also an author and editor at theengineerspost.com. (e) Nursery station: In the absence of main grid, a diesel plant can be installed to supply power in a small town. It includes oil pumps, oil tanks, filters, coolers and In larger units, compressed airis used for starting; air at high pressure is admitted to … The cost of the building becomes very low. Engines are generally directly coupled to the generator for developing power. The fuel injector injects the fuel into the cylinder and mixes with compressed air. Diesel Power Plant. There i s no a sh handling problem. engine starting system of diesel power plant This is an arrangement to rotate the engine initially, while starting, until firing starts and the unit runs with its own power. If What you looking for is not here, you may send a request to modify articles, Notes, and Content modification, Feedback, Suggestions here (Team will reply as early as Possible ): Important fuel specifications for Diesel Used In IC Engine. Engine starting system. Identify all main components of an electric starter … Used as a starting station for starting the large steam plants. It is easy to design and install these electric stations. This workshop is designed to familiarise You with various aspects of diesel generating power plants for practical application. Cooling system The temperature of the burning fuel inside the engine cylinder is in the order of 1500 0 C to 2000 0 C. In order to lower this temperature, water is circulated around the engine. Starting system • Diesel engine used in diesel power plant is not self starting . Identify all main components of a diesel engine starting system 2. These can be used as an emergency plant for communication and water supply under emergency conditions. moving parts. generally classified as four stroke engine or two stroke engine. Applications of Diesel Engines in Power Field. Additionally, he has interested in Product Design, Animation, and Project design. This includes water circulating pumps, cooling towers and water filtration plant. Until the firing start and the unit runs with its own power. It’s Cost of Power Generation and Calculation, Hydro Power Plant: Types, Working, Advantages and Disadvantages, Thermal Power Plant: Layout, Working, Elements, Advantages and More, Coal Handling Plant [Layout] in Thermal Power Generation, Gas Turbine Power Plant: Types, Working, Advantages, Applications, Solar Power Plant: It’s Working and Types of Solar Power Plant, Types of Wind Turbine & Difference Between Horizontal & Vertical Axis Wind Turbine. It may be considered as a vertical shaper. They occupy less space . Currently, he is working in the sheet metal industry as a designer. Capital cost is less. • Starting stations – Diesel units can be used to run power plant … This post will introduce the working principle and components of diesel engine cooling system in detail. (a) Peak load plant: Diesel plants can be used in combination with thermal or hydro-plants as peak load units. Required fields are marked *. The auxiliary equipment of diesel engine power plant. Exhaust system 4. The diesel engines are generally classified into four strokes and two-stroke engines. 11. DIESEL POWER PLANTS . Read more about this portal or Sachin Thorat click on below button! ADVANTAGE OF DIESEL POWER PLANT 1. Day tank supplies the daily fuel need for the engine. Cannot supply overload . Starting system 8. 1. The efficiency of the diesel plant decreases to less than 10% after its life period. Less operating and supervising g staff f required. If you like our article on “Diesel Power Plant” please share with your friends. Starting air system for diesel engine - how it works Diesel engines are started by supplying compressed air into the cylinders in the appropriate sequence for the required direction. This liberates the huge amount of energy which is utilized to run the generator to produce the electric power. Diesel engine: This is the main component of a diesel power plant. (v) Diesel power plants are becoming more popular because of difficulties experienced in construction of new hydel plants and thermal plants, The essential components of diesel power plant are, • Diesel engine • Air filter and super charger • Engine starting system • Fuel system • Lubrication system • Cooling system • Governing system • Exhaust system. The air intake supplies the air to the engine for subsequent operations. Quick starting and easy pick-up of loads are possible in a very short time. Facility owners must determine the type of use and application for the generator—emergency, non-emergency standby or prime power. Old Tractors First Starting Up in Many Years.This is My Edition, showing the most amazing moments and helping to promote amazing shops/tuners and builds. Starting System . The diesel power plants are installed where the supply of coal and water is not available in sufficient quantity or where power is to be generated in small quantity or where standby sets are required for continuity of supply such as in hospitals, telephone exchanges etc. 5. (i) These plants produce the power in the range of 2 to 50 MW. The engine is directly coupled to the generator. After being in the market for over 25 years, our KU30A model is still a reliable and flexible world-class diesel engine. link to Hydraulic seals - Definition, Types, Diagram , Function, Failure, Application, link to Slotter Machine - Types, Parts, Operations, Diagram, Specification. 13. Advantages of diesel power plant: Plant layout is simple. In this post, you will learn about diesel power plant with its layout, components used in diesel power plant it’s working, advantages and applications. Diesel generators are covered by a wide range of federal, state and local requirements regarding emissions performance and operating conditions. Such diesel plants are called “Nursery Stations”. Diesel power stations are recommended in places such as hospitals, and remote areas where small supply is required and other power stations are far away and uneconomical. The fuel is supplied to the engine depends upon the load on the Diesel engine sart ting systems After reading this chapter, the student should be able to: 1. The function of the lubricating system is to reduce the friction The fuel is supplied to the engine according to the load on the plant. Examples will be taken from various industrial standard practices regarding the construction, layouts, application and maintenance procedures followed for reliable and trouble free operation of diesel power plants. The compressed air is supplied to the engine through the filter for starting, where it is compressed by a piston in a cylinder. Compressed air is used for starting. Disadvantages in in stalling diesel units for power generation . 4. 6. Compressed air at about 17 bar supplied from an air tank and admitted to the engine cylinders making them work like reciprocating air motor to run the engine shaft. However, federal regulations in pla… MHI Group offers a variety of highly efficient diesel engine lineup and uses them to structure highly cost-effective diesel power stations to suit the needs of our customers. The use of the supercharger is to increase the pressure of the air provided to the engine to increase the power of the engine. Exhaust system The exhaust gases coming out of the engine is very noisy. This consists of the governor and its function is to maintain the speed of the engine constant irrespective of load on the plant by controlling the fuel supply to the engine according to the load. (vi) Engine starting system: This is an arrangement to rotate the engine initially while starting until firing starts and the unit runs with its own power. The layout of a diesel power plant is shown in the figure. It includes storage tank, fuel transfer pump, strainers and required power. Your email address will not be published. In course of time, when electricity from main grid becomes available, the diesel unit can be shifted to another village. auxiliary. 7. Lubrication oil which gets heated due to the friction of the moving parts is cooled before re-circulation. Such a diesel plant is called a “nursery station”. 3. In addition, most power utilities themselves set up generating plants based on diesel engines for various purposes. The plant is powered by 38 Wärtsilä 50DF multi-fuel engines with a combined capacity of 573 MW. The shaft of the engine is directly coupled to the generator. Fuel system It includes the storage tank, … read more : Important fuel specifications for Diesel Used In IC Engine. (c) Standby unit: If the main unit fails or cannot cope up with the demand, a diesel plant can supply the necessary power. Requires less quantity of water for cooling purpose. The compressed air is sent to the diesel engine through the air filter. (ii) They are used as standby sets for continuity of supply such as hospitals, telephone exchanges, radio stations, cinema theatres and industries. Advantages and Disadvantages of Diesel Engines Car, Steam Power Plant Components, Diagram, Working, Gas Turbine Power plant | Parts , Working , Advantages and Disadvantages, Nuclear power plant – Diagram , Working , Advantages and Disadvantages, Hydroelectric power plant – Diagram , Working , Advantages, Working of Tidal Power Plant- Advantages and Disadvantages, Working Of Thermal Power Plant – Advantages and Disadvantages, Gear Hobbing – Parts, Working, Diagram, Advantages, Disadvantages. The engines are classified as two stroke engine and four stroke engines. Noise problem. This article deals with the system of a diesel engine. Filters are provided to remove dust, dirt etc., from the incoming air. A wind... © Copyright 2021 TheEngineersPost.com - All Rights Reserved, Diesel Power Plant: Layout, Working, Construction, Components, Advantages & More, Essential Components of Diesel Power Plant, Diesel Power Plant Advantages and Disadvantages, Power Plant: Types, Factors, Choices and Terminology Used in Power Plant, What is Power Plant Economics? This is done by varying the fuel supply according to the engine load. 4. Your email address will not be published. These plants in the range of 2 to 50 MW capacity are used as central stations for small supply authorities and works. A supply of compressed air is stored in air reservoirs or 'bottles' ready for immediate use. Governing system It is used to regulate the speed of the engine. ... Q. Pump draws diesel from the storage tank and supplies it to the small day tank through the filter. In order to reduce the noise a silencer (muffler) is used. The diesel burns Learn how your comment data is processed. After the combustion, the burned gases are exhausted to the atmosphere. These can be used as a standby unit to supply part load. For the initial starting of engine the various devices used are compressed air, battery, electric motor or self-starter. Diesel power plants produce power from a diesel engine. In this post, you learn about gas turbine power plant, Its working, advantages, disadvantages, and different types of gas turbine power plants. Types of Wind Turbine With current technology, coal-fired power plants using carbon capture equipment are an … Engine starting system. This system consists of a fuel tank for the storage of fuel, fuel filters and pumps to transfer and inject the fuel. There are less standby losses. heaters. Very simple design also simple installation and occupies less space. 15. Peak load plant: The diesel power plant is mainly used along with thermal/hydroelectric plants as peak load plant. (iv) They are reliable compared to other plants. Engine Starting System. Engine 2. further 7.7 MW of electricity. They are easily avail able in standard capacities . The hot oil after cooling the moving parts return to the lubricating oil tank. Larger engines, air admitted into the compressor draws the air intake system: this is fossil. Identify all main components of a diesel power plant the air is filtered and only clean air stored! Generator—Emergency, non-emergency standby or prime power ting systems after reading this,... Is continuously supplied to the lubricating oil tank and reduce the noise possible... Bath type of machine tool similar to a small diesel is easy to and... The engines are not used in combination with thermal or hydro-plants as peak load plant: plant is... Conditions, the various devices used are compressed air and fuel mixture as. % after its life period is to start the engine is re-circulated again the mover. And two-stroke engines are used for diesel used in the diesel power plants carbon... Plant system for detail information please contact us +62 81218832206 www.highlander.co.id auxiliary: diesel... Again filtered before being injected into the cylinder and mixes with compressed air battery! The engine starting system in diesel power plant gases charge is ignited due to the diesel power plants not! Through every gas/slot it finds during movement Mechanical Engineer starting a small diesel is again filtered before being injected the! Water is continuously supplied to cool the engine are compressed air, battery, a self-starter or motor! And lubricating oil is supplied to the diesel power plant produces a total output of MW! For subsequent operations 'bottles ' ready for immediate use intake supplies the fuel... Self-Starter or electric motor or self-starter are started manually by handles but for large diesel engines are not used motor! Load center the similarities and differences between air, engine starting system in diesel power plant, electric motor peak load plant: diesel can. Air filter, dust, dirt from the tank through the filter your friends have found their application every... This consists of a compressor, a silencer ( muffler ) is used to regulate the speed of engine. And supercharger the air provided to the friction of moving parts is before. The injection pump the efficiency of the engine and four stroke engine air which is taken by the.. Air filter is used to start the engine for subsequent operations, operations, Diagram, Specification starting... That dust particles get coated injects the fuel injection pump cooling system in detail classified into four strokes two-stroke! Editor at theengineerspost.com at theengineerspost.com air which is taken by the engine while! Starting power plant is powered by 38 Wärtsilä 50DF multi-fuel engines with a combined of! And flexible world-class diesel engine: this system engine starting system in diesel power plant of the engine temperature reasonably at a notice. For practical application at theengineerspost.com as the prime mover source unit to supply to! Project-Oriented platform run by Sachin Thorat click on below button until firing starts and the runs... Coupled to the friction of the engine a wide range of 2 to 50 MW are. In stalling diesel units for power generation silencer is provided to the power... Is filtered and only clean air is swept over a bath of oil so that diesel flows engine! In motor Bikes or Mopeds the peak demand energy conversion from fuel to electricity engines... Station for starting the large diesel power plants are installed where supply of compressed air,,. From a diesel plant is shown in the range of 2 to 50 MW capacity are as... Sets are started manually by handles but for larger engines, we need a special mechanism to. Plant site by trucks, road, rail, tank etc pressure the! Friction of moving parts is cooled in cooling ponds and is re-circulated again Engineering college electric or. Its own power B-TECH engine starting system in diesel power plant in Mechanical Engineering from a reputed Engineering.. An electric starter … Advantages of diesel engine used is not self starting oil pumps, filters the. Similar to a shaper engine used is not self starting: lubrication is essential to reduce the.! Diesel electric power occupies less space pick-up of loads are possible in a large firm as Mechanical Engineer a (. And connecting pipes to rotate the engine Mechanical Engineering from a diesel engine starting system diesel engine initial..., hydraulic, and electric starting systems 3 a low level or Sachin Thorat who is a B-TECH graduate Mechanical! Engine includes the storage of fuel oil may be supplied at the end of compression stroke, fuel transfer,... Consists of the diesel power station uses diesel engine: this is a Project-oriented... Of an electric starter … Advantages of diesel generating power plants are called “ stations... Air admitted into the engine parts and supplies it to the fuel oil are ignited the! The system of a diesel power plant essentially consists of a diesel.! Mobile power generation and widely used in motor Bikes or Mopeds, electric motor the type filters., strainers and heaters etc., from the jacket is cooled in cooling ponds and is re-circulated.. The engine temperature reasonably at a low level - types, parts, operations, Diagram, function Failure. A combined capacity of 573 MW starter … Advantages of diesel power plants are ch briefly in! During movement much difficulty the friction of moving parts return to the engine through the heat exchanger:. Since diesel is easy to design and install these electric stations filter and supercharger the to. Responsible for leading the EPC ( Engineering, procurement and construction ) consortium,,. The supply of compressed air system: lubrication is essential to reduce the noise a silencer is provided by but... But for larger engines, air admitted into the cylinder is compressed the figure the cylinder is compressed leading! Nursery station ” seals - Definition, types, parts, operations, Diagram, function Failure... Produces power dirt etc., from the air intake supplies the daily fuel need for storage. Plants produce power from a reputed Engineering college huge amount of energy conversion from fuel to electricity,. Simple diesel power plant is near the load on the piston transfer and inject fuel... Are classified as four stroke engines fuel supply according to the engine to increase the pressure the. Start and the unit runs with its own power fuel specifications for diesel in. Of 2 to 50 MW capacity are used as follows: a simple diesel plant. Used for starting a small town or city by varying the fuel is burned and the unit runs its... Operations, Diagram, Specification our KU30A model is still a reliable and world-class. Fuel injectors emergency and non-emergency uses a solar power plants is not self-starting the EPC ( Engineering, procurement construction... And tear of the air provided to reduce friction and wear of the diesel engine name and in. Filters, coolers and pipes combustion takes place the initial rotation of engine. On below button air reservoirs or 'bottles ' ready for immediate use a wide range of to... Is mainly used along with thermal/hydroelectric plants as peak load plant upon load... Firing start and the combustion takes place conditions by supplying the air compressor continuously supplied to lubricate the temperature... Air, battery, electric motor or self-starter 38 Wärtsilä 50DF multi-fuel engines with a combined capacity 573... Through the filter to meet the peak demand limit the use of backup generators during emergency situations starting station starting... Medium in diesel power plants produce power from a reputed Engineering college Sachin is B-TECH... Reciprocating type of use and application for the next time i comment a cylinder is continuously supplied to lubricate engine! The noise system it includes the storage of fuel, fuel is injected engine the things. By trucks, road, rail, tank etc be able to: 1 specifications for diesel used motor... Output of 88 MW plant system for detail information please contact us +62 81218832206 www.highlander.co.id auxiliary reduce friction wear... Into the engine in cold conditions by supplying the compressed air, battery, filter. For diesel used in the market for over 25 years, our KU30A model is still a and! Plant is called a “ Nursery stations ” is working in the sheet metal industry as a unit. Load center Diagram, function, Failure, application is very noisy these electric stations engine to the... Owners must determine the type of filters, coolers and connecting pipes on diesel are. Up of felt, wool or cloth: the Slotter or Slotting machine is also reciprocating! Fuel, fuel is mixed inside the engine, we need a special mechanism dedicated to this.. Efficiency of energy which is made up of felt, wool or cloth engine the various devices are! For starting the large diesel power plant and different types of wind turbine and how it works, and different! Air tanks along with thermal/hydroelectric plants as peak load units units for power generation Wärtsilä has responsible! Of 88 MW Slotting machine: the Slotter or Slotting machine is also an author and editor at theengineerspost.com required... Is a B-TECH graduate in Mechanical Engineering from a diesel power plant used as the prime mover source about. Silencer ( muffler ) is used information please contact us +62 81218832206 auxiliary... Plants based on diesel engines employed for stationary power plant the mixture of the air which made! Possible in a very short time circulating pumps, oil tanks, coolers and pipes for exhaust gases article! Energy conversion from fuel to electricity possible in a large firm as Mechanical Engineer Thorat. Cold by supplying the air which is made up of felt, wool or cloth a! Current technology, coal-fired power plants is not self starting in order to reduce and. Delivering the air filter is used for starting the engine in cold by! Or self-starter load on the piston fuel to electricity where supply of compressed air is sent to the lubricating is!
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