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
  • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
  • F01P3/00—Liquid cooling
  • F01P3/20—Cooling circuits not specific to a single part of engine or machine
• • 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
  • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
  • F02B39/005—Cooling of pump drives
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
  • F01P2060/00—Cooling circuits using auxiliaries
  • F01P2060/12—Turbo charger

Definitions

• the present invention relates to a cooling device for a supercharged internal combustion engine, and particularly to a piping configuration of a cooling water circuit for cooling a supercharger.
• the bearings of the turbocharger are oil-cooled, and the cooling water that cools the internal combustion engine is guided to the service receiving section of the turbocharger.
• the cooling of the shaft part is intended to suppress the temperature rise of the bearing part due to the high rotational movement of the rotating shaft and to improve the lubrication performance of the oil that cools the bearing part. More done 0
• FIG. 3 conceptually shows a conventional configuration of a cooling device for an internal combustion engine having such a water-cooled supercharger.
• the cooling of the engine a body is performed as follows.
• the cooling water is radiated and cooled by the radiator b, and the lower tank c of the radiator b, the outlet pipe d, It is led to the cooling water pump f via the engine cooling water inlet pipe e.
• the cooling water pump f is driven by the engine a, and the cooling water is driven by the engine a by the driving force.
• the cooling water circulation path g inside, ie, the outer periphery of the cylinder block h, the cylinder head i, etc., are cooled. In the drawing, only a portion of the cooling water circuit g that corresponds to the cylinder head i is shown.
• thermos sunset housing j The cooling water that has cooled the inside of the engine a in this way is finally led to the thermos sunset housing j.
• the valve In accordance with the temperature change of the cooling water in the engine a, the valve is opened and closed in the solar module housing j, and passes through the radiator b.
• a thermostat k for adjusting the cooling water flow rate is provided.
• the thermostat k is opened.
• the cooling water is supplied through the thermostat k engine cooling water outlet pipe 1, pipe m, penetrating vibrator ⁇ , and the radiator b through It is led to k.
• the cooling water After cooling, the cooling water is cooled down to a suitable temperature at the radiator b and circulates through the engine a again.
• the thermostat k is closed, and the cooling water passes through the radiator b and radiates heat. , Without being cooled down. The cooling water is directly led to the engine cooling water inlet pipe e via the pipe q. Thus, the temperature of the cooling water in the engine a is maintained at an appropriate temperature.
• the above is the mode of cooling the engine a body.
• the cooling of the supercharger r will be described. That is, in order to cool the turbocharger r, the part of the cooling water circuit g corresponding to the cylindrical port h and the bearing of the turbocharger r are required. and a return pipe u for communicating the bearing section s and the outlet pipe 1 are provided.
• the cooling water in the cooling water circulation path g is guided to the cooling water path formed in the center-housing of the outlet feir through the water supply pipe t.
• heat exchange is performed between the cooling water and the cooling portion s.
• the cooling water that has cooled off the turbocharger r passes through the return pipe u and joins with the cooling water that has cooled the inside of the engine a at the outlet pipe 1. Then, it's hot. It is led to evening P. After that, the cooling water is radiated and cooled at b.
• the bearing portion s of the turbocharger r becomes very 3 ⁇ 4u with the high rotational movement of the rotating shaft, as is well known, so that the cooling water may be turned into steam.
• an air vent pipe V is provided between the upper end of the cooling water circuit g and the upper tank p, and the upper tank P and the engine cooling water inlet pipe are provided.
• the conventional cooling device having such a configuration has the following problems.
• the cooling water that has cooled the turbocharger r is not guided to the thermos sunset housing j, and is directly discharged from the outlet pipe. It is led to 1 and heat is radiated and cooled in Laje-evening b. In other words, the cooling water that has cooled the turbocharger r is radiated and cooled in overnight at b even if the cooling water temperature is below the appropriate temperature.
• the cooling water temperature will be above or below the appropriate temperature and will be in a so-called one-cooled state. It was impossible to drive properly ⁇
• the location of the outlet pipe 1 is lower than that in a short distance.
• the air tends to return to the turbocharger r side.
• the steam generated at the receiving part s at the connection part between the return pipe u and the outlet pipe 1 remains.
• complete achievement of steam-water separation was difficult to achieve.
• the present invention has been made in view of such circumstances, and aims at preventing overcooling and completely achieving steam-water separation, which is also advantageous for mass production. Its purpose is to provide a cooling device for a charged internal combustion engine.
• the supercharger of the internal combustion engine with a supercharger and the internal combustion engine are cooled with water, and the air mixed in the cooling water is mixed with the air at the time of the rush.
• the cooling system of the internal combustion engine with a supercharger which conducts air-water separation in this abba tank by leading it to a pattern, cooling that circulates in the internal combustion engine
• a communication path is provided for communicating the upper end of the water channel, the cooling water channel circulating in the turbomachine, and the above-mentioned aperture tank.
• the cooling water that has cooled the internal combustion engine is guided from the upper end of the cooling water channel in the internal combustion engine to the cooling water channel in the supercharger, and further cools the supercharger.
• the mixed air accumulates at the upper end of the cooling water passage in the internal combustion engine, and this mixed air also passes through the cooling water passage in the turbocharger, and the air enters the cooling device.
• FIG. 1 is a diagram conceptually showing an embodiment of a cooling device for a supercharged internal combustion engine according to the present invention
• FIG. 2 is a diagram showing an internal configuration of an aperture tank shown in FIG.
• FIG. 3 is a perspective view conceptually showing an example of a conventional cooling device for a supercharged internal combustion engine.
• the cooling water is radiated by the radiator—evening 2 and cooled, and the lower tank 3 and the outlet pipe 4 of the radiating evening 2 It is led to a cooling water pump 6 via an engine cooling water inlet pipe 5.
• the cooling water pump 6 is driven by the engine 1, and the driving force causes the cooling water to flow through the cooling water circulation path 7 inside the engine 1, that is, the cooling water pump 6. Cool the outer periphery of the cylinder block 8, cylinder head 9, and the like. In the drawing, only a portion of the cooling water circuit 7 corresponding to the cylinder head 9 is shown.
• Thermostat housing 1 At L0, the valve is opened and closed according to the temperature change of the cooling water in engine 1 and the radiator is set up. Adjusting the flow rate of cooling water passing through 2 A moss nozzle 1 1 is provided.
• the thermostat 11 is opened.
• the cooling water is supplied to the radiator 2 via the thermostat 11, the engine cooling water outlet pipe 12, the pipe 13, and the inlet pipe 14.
• Atsu tank 1
• the cooling water is cooled down to a suitable temperature at Rage 1st 2 and then circulates through the engine 1 again.
• the thermostat 11 will be closed and the cooling water will be The heat is not directly radiated to the engine cooling water inlet pipe 5 through the bypass pipe 16 without being radiated and cooled.
• the rejection water temperature is maintained at an appropriate temperature.o
• a return pipe 22 that connects the section 19 with the connection section 21 of the upper tank 15 will be provided.
• a water supply pipe 23 will be installed between the upper tank 15 and the engine cooling water inlet pipe 5. .
• these water supply pipes 20 and return pipes 22 also function as air bleeding pipes for separating water and water in the cooling water at the same time as the cooling water channels of the turbocharger 17.
• connection part 21 is more powerful than the bearing part 19 to achieve the steam-water separation function.
• the power of tank 15 is arranged.
• the air in the cooling water circuit 7 is led to the upper end 18, and a small amount of cooling water containing air is supplied to the center housing of the turbocharger 17 through the water supply pipe 20. It is led to the cooling water channel formed in the wing. When the cooling water passes through the cooling water passage, heat exchange is performed between the cooling water and the bearing 19.
• the cooling water that has cooled the heater 17 passes through the return pipe 22 and is guided to the connection part 21.
• the steam generated in the bearing section 19 etc. due to the sudden stop of the engine 1 etc. also passes through the return pipe 22 and is guided to the connection section 21.
• FIG. 2 is a perspective view showing the internal configuration of the upper tank 15.
• the cooling water containing the air flowing into the expansion chamber 24 via the connection part 21 is separated into water and water in the expansion chamber 24. You.
• the cooling water which has been separated from the water and is air-free, has its opening located slightly lower than the bulkhead 25. It is led to the engine cooling water inlet pipe 5 via the pipe 23, and is once again in the cooling water circuit 7.
• Reference numeral 26 denotes an air vent pipe for separating cooling water from the cooling water in the core at the lower part of the tank 15 below the azpan tank 15.
• the cold air passed through the turbocharger 17! ] Return to the cooling water circulation path 7 of the engine 1 via the tank tank 15 without passing through the core section of the hydraulic system. ing .
• the cooling water that has passed through the turbocharger 17 returns to the cooling water circulation path 7 of the engine 1 through the core section of the radiator-evening 2. Although this was the case, it was more powerful than this in that cooling was prevented.
• the pipe communicating with the bearing portion 19 of the turbocharger 17 and the connecting portion 21 of the attraction tank 15 has a directional force on the connecting portion 21.
• the same type of conventional pipe is used for the bearing part 1 of the turbocharger 17. 9 and the engine cooling water outlet 12 located lower than the bearing 19, so that steam is trapped in the middle of the eve.
• the water supply pipe 20 and the return pipe 22 are connected to the cooling water passage of the turbocharger 17 at the same time as the water and moisture in the cooling water. Also functions as an air bleeding tube for separation.
• a separate air vent pipe for separating air and water in the cooling water was provided. Cost reduction by common use can be achieved 0
• the cooling of the turbocharger and the bleeding of air for separating water from the cooling water are performed using a common pipe.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Supercharger (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=14327526

Family Applications (1)

Country Status (6)

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Citations (4)

Family Cites Families (5)

• 1988
  • 1988-08-03 JP JP1988102440U patent/JPH0224045U/ja active Pending
• 1989
  • 1989-07-24 EP EP89908504A patent/EP0393199B1/en not_active Expired - Lifetime
  • 1989-07-24 DE DE68920027T patent/DE68920027T2/de not_active Expired - Fee Related
  • 1989-07-24 KR KR1019900700688A patent/KR900702186A/ko not_active Application Discontinuation
  • 1989-07-24 US US07/469,474 patent/US5275133A/en not_active Expired - Lifetime
  • 1989-07-24 WO PCT/JP1989/000737 patent/WO1990001621A1/ja active IP Right Grant

Patent Citations (4)

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