US3295506A - Method and apparatus for the prevention of souping in diesel engines - Google Patents
Method and apparatus for the prevention of souping in diesel engines Download PDFInfo
- Publication number
- US3295506A US3295506A US384407A US38440764A US3295506A US 3295506 A US3295506 A US 3295506A US 384407 A US384407 A US 384407A US 38440764 A US38440764 A US 38440764A US 3295506 A US3295506 A US 3295506A
- Authority
- US
- United States
- Prior art keywords
- souping
- diesel engines
- fuel
- prevention
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
-
- 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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0645—Details related to the fuel injector or the fuel spray
- F02B23/0648—Means or methods to improve the spray dispersion, evaporation or ignition
- F02B23/0651—Means or methods to improve the spray dispersion, evaporation or ignition the fuel spray impinging on reflecting surfaces or being specially guided throughout the combustion space
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- 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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0696—W-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder wall
-
- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- This invention relates to a method and apparatus for the prevention of souping in diesel engines.
- souping occurs. This souping is evidenced by the appearance of black sludge which between the disc and the top of the piston.
- the spray holes of the fuel injector 7 inject a spray 13 of fuel into the cavity. These spray holes 12 are directed outwardly and downwardly. It has been found that best results in preventing souping are obtained when the fuel sprays impinge partially on the disc 1.
- the discs used should be made of high temperatureresistant metal. They must be capable of withstanding the temperatures of up to 1100" C. encountered in the combustion chambers. Tests have shown that discs made of Nichrome or Inconel are quite suitable.
- Souping is manifested externally by a bluish-grey smoke of a fog type issuing from the exhaust. If the engine is examined, unburned or partially unburned fuel will be found in the cylinders and in the exhaust system.
- FIGURE 1 shows the preferred form of the invention attached to the cylinder head of a diesel engine
- FIGURE 2 shows a cross section of the device of FIG- UREl.
- FIGURE 1 a cylinder head 4 of a diesel engine with inlet and exhaust ports 5 and valves 4A is shown.
- a flat circular metallic disc 1 having a central aperture 6 is fixed to the cylinder head and positioned from it by means of legs 2. Studs 3, which screw into holes drilled in the head, hold the disc securely in place.
- FIGURE 2 shows a cross-section of a cylinder head 4 and a piston 11.
- Disc 1 should be located away from the surface of cylinder head 4 so that the temperature of the disc will be higher (closer to that of the gas in the cavity) than that of the cylinder head itself. For mechanical reasons sufficient clearance should be allowed It can be readily seen from these results that the use of the anti-souping devices greatly increases the length of time that a diesel engine can be idled before souping becomes evident. This improvement is obtained even with heavy crude oils and by using the devices, one of the drawbacks to using this type of fuel is almost eliminated.
- the anti-souping discs when placed in the combustion chamber are heated by combustion gases to the temperature much above the temperature of the walls of the chamber.
- the injected sprays of fuel either strike the hot discs or pass close to it by which they .are heated and burnt before they reach the cold walls of the combustion chamber. In this Way, the souping problem is greatly alleviated.
- a diesel engine of the type having a cylinder, a piston in the cylinder, a cylinder head forming a combustion chamber above said piston, and a fuel nozzle located in said head, constructed to discharge separate conical spray patterns at widely divergent angles generally radially from the nozzle and through said combustion chamber formed between the crown of said piston and said cylinder head;
- the improvement comprising a generally fiat disk located in said combustion chamber arranged in a plane transverse to an axis bisecting the divergent angle of the spray pattern, means for supporting said disk spaced from the piston and cylinder head with the central portion of said disk exposed only to the gases in said chamber and with only the periphery of said disk disposed to intercept a portion of the conical sprays from said nozzle which approach the adjacent head of the piston, said means pro- J viding suflicient spacing to form a barrier to heat transfer from the disk to maintain disk temperature above ignition temperature at engine idle speeds.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
H. U. WISNIOWSKI METHOD AND APPARATUS FOR THE PREVENTION Jan. 3, 1967 vOF SOUPING IN DIESEL ENGINES Filed July 22, 1964 HEA/ky u/lsAl/awskd 8,
v vm rm A cnv United States Patent This invention relates to a method and apparatus for the prevention of souping in diesel engines.
During idling of diesel engines for long periods of time, a phenomenon known as souping occurs. This souping is evidenced by the appearance of black sludge which between the disc and the top of the piston. The spray holes of the fuel injector 7 inject a spray 13 of fuel into the cavity. These spray holes 12 are directed outwardly and downwardly. It has been found that best results in preventing souping are obtained when the fuel sprays impinge partially on the disc 1.
The discs used should be made of high temperatureresistant metal. They must be capable of withstanding the temperatures of up to 1100" C. encountered in the combustion chambers. Tests have shown that discs made of Nichrome or Inconel are quite suitable.
The following experimental results were obtained on a l2-cylinder locomotive diesel engine. An anti-souping disc was placed in the No. 1 cylinder as indicated.
First cylinder Cylinder No. 1 Total Anti-souping device in No. 1 Fuel started to soup started to soup Hours of cylinder after after- Idling Flat annular Pembina Crude Oil 7 75 hrs 48.5 hrs 51 do 7 hrs 53 hrs 66 do 6.75 hrs 62.75 hrs 73 Standard Diesel Fuel 22.25 hrs 100.25 hrs 115 comes out from the exhaust system of the engine. Souping is most pronounced in locomotive diesel engines which are left idling for long periods of time. Diesel engines for other services are normally not left idling long enough to show souping.
Souping is manifested externally by a bluish-grey smoke of a fog type issuing from the exhaust. If the engine is examined, unburned or partially unburned fuel will be found in the cylinders and in the exhaust system.
Souping has occurred in locomotive service with standard diesel fuel but when crude oils were tested as substitute fuels, the souping phenomenon was found to be much aggravated. In its heavy form souping is troublesome and greatly increases the fire danger of the installation and surroundings. It is also suspected that it accelerates the deterioration of the lubricating oil and increases the wear of the engine.
It is an object of the present invention to provide a method of eliminating or reducing the occurrence of souping in diesel engines especially those on locomotive service.
It is another object of the invention to provide a means of reducing souping which is reasonably inexpensive, easily adaptable to present engines, and which is fixed in position and, therefore, not subject to dynamic forces which might tend to destroy it.
In drawings which illustrate embodiments of the invention,
FIGURE 1 shows the preferred form of the invention attached to the cylinder head of a diesel engine,
FIGURE 2 shows a cross section of the device of FIG- UREl.
Referring to FIGURE 1 a cylinder head 4 of a diesel engine with inlet and exhaust ports 5 and valves 4A is shown. A flat circular metallic disc 1 having a central aperture 6 is fixed to the cylinder head and positioned from it by means of legs 2. Studs 3, which screw into holes drilled in the head, hold the disc securely in place.
FIGURE 2 shows a cross-section of a cylinder head 4 and a piston 11. Disc 1 should be located away from the surface of cylinder head 4 so that the temperature of the disc will be higher (closer to that of the gas in the cavity) than that of the cylinder head itself. For mechanical reasons sufficient clearance should be allowed It can be readily seen from these results that the use of the anti-souping devices greatly increases the length of time that a diesel engine can be idled before souping becomes evident. This improvement is obtained even with heavy crude oils and by using the devices, one of the drawbacks to using this type of fuel is almost eliminated.
The above results were found to be reproducible and it can be expected with reasonable probability that provided the injectors are in good condition, the start of visible souping with the anti-souping discs will not occur before 50 hours of idling on crude oils. In the case of standard diesel fuels the souping-free time with the discs is at least hours.
Investigations conducted on the test engine and combustion rig showed that souping is caused to a great extent by the contact of injected fuel with the relatively cold Walls of the combustion chambers resulting in partial burning or no burning of a part of this fuel.
The anti-souping discs when placed in the combustion chamber are heated by combustion gases to the temperature much above the temperature of the walls of the chamber. The injected sprays of fuel either strike the hot discs or pass close to it by which they .are heated and burnt before they reach the cold walls of the combustion chamber. In this Way, the souping problem is greatly alleviated.
What is claimed is:
In a diesel engine of the type having a cylinder, a piston in the cylinder, a cylinder head forming a combustion chamber above said piston, and a fuel nozzle located in said head, constructed to discharge separate conical spray patterns at widely divergent angles generally radially from the nozzle and through said combustion chamber formed between the crown of said piston and said cylinder head; the improvement comprising a generally fiat disk located in said combustion chamber arranged in a plane transverse to an axis bisecting the divergent angle of the spray pattern, means for supporting said disk spaced from the piston and cylinder head with the central portion of said disk exposed only to the gases in said chamber and with only the periphery of said disk disposed to intercept a portion of the conical sprays from said nozzle which approach the adjacent head of the piston, said means pro- J viding suflicient spacing to form a barrier to heat transfer from the disk to maintain disk temperature above ignition temperature at engine idle speeds.
References Cited by the Examiner UNITED STATES PATENTS 535,837 3/1895 Lorenz 123-30.3
1,213,911 1/1917 Schmid 12330.3
1,515,496 11/1924 Laeubli 123-32 1,781,327 11/1930 Goinard 23--30.3
2,071,062 2/1937 Cummins 12332 2,761,431 9/1956 Na llinger 123-32 I FOREIGN PATENTS 589,381 2/1925 France. 905,902 3/1954 Germany. 958,789 2/1957 Germany.
MARK NEWMAN, Primary Examiner.
m RICHARD B. WILKINSON, Examiner.
L. M. GOODRIDGE, Assistant Examiner.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US384407A US3295506A (en) | 1964-07-22 | 1964-07-22 | Method and apparatus for the prevention of souping in diesel engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US384407A US3295506A (en) | 1964-07-22 | 1964-07-22 | Method and apparatus for the prevention of souping in diesel engines |
Publications (1)
Publication Number | Publication Date |
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US3295506A true US3295506A (en) | 1967-01-03 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US384407A Expired - Lifetime US3295506A (en) | 1964-07-22 | 1964-07-22 | Method and apparatus for the prevention of souping in diesel engines |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050217639A1 (en) * | 2002-10-02 | 2005-10-06 | Hill Phillip G | Glow ring ignition assist for internal combustion engine |
US20060081212A1 (en) * | 2002-10-02 | 2006-04-20 | Hill Philip G | Direct injection combustion chamber geometry |
US20080196690A1 (en) * | 2006-11-28 | 2008-08-21 | Isamu Hotta | Internal combustion engine with auxiliary combustion chamber |
US10287970B1 (en) * | 2017-12-07 | 2019-05-14 | Caterpillar Inc. | Fuel injection system |
WO2021203578A1 (en) * | 2020-04-07 | 2021-10-14 | 天津大学 | Device for optimizing oil-gas mixing process of internal combustion engine |
US11346275B2 (en) | 2020-04-07 | 2022-05-31 | Tianjin University | Apparatus for optimizing fuel/air mixing process of internal combustion engine |
US11905903B2 (en) * | 2020-07-24 | 2024-02-20 | Powerhouse Engine Solutions Switzerland IP Holding GmbH | Port heating system and method |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US535837A (en) * | 1895-03-19 | Wilhelm lorenz | ||
US1213911A (en) * | 1914-12-19 | 1917-01-30 | Albert Schmid | Internal-combustion engine. |
US1515496A (en) * | 1923-07-18 | 1924-11-11 | Laeubli Ernest | Injector for oil engines |
FR589381A (en) * | 1924-02-04 | 1925-05-28 | Fuel injection engine | |
US1781327A (en) * | 1924-11-16 | 1930-11-11 | Goinard Joseph Marie Arsene | Carburetor for internal-combustion engines supplied with heavy oil |
US2071062A (en) * | 1933-09-21 | 1937-02-16 | Oil Engine Dev Company | Oil engine |
DE905902C (en) * | 1949-10-02 | 1954-03-08 | Erich Baentsch | Process for the production of heavy vapor-air mixtures for combustion under excess pressure, especially for low-compression internal combustion engines |
US2761431A (en) * | 1950-02-22 | 1956-09-04 | Daimler Benz Ag | Injection type internal combustion engine with precombustion chamber |
DE958789C (en) * | 1952-07-06 | 1957-02-21 | Daimler Benz Ag | Internal combustion engine with mixture control and with external ignition of the mixture |
-
1964
- 1964-07-22 US US384407A patent/US3295506A/en not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US535837A (en) * | 1895-03-19 | Wilhelm lorenz | ||
US1213911A (en) * | 1914-12-19 | 1917-01-30 | Albert Schmid | Internal-combustion engine. |
US1515496A (en) * | 1923-07-18 | 1924-11-11 | Laeubli Ernest | Injector for oil engines |
FR589381A (en) * | 1924-02-04 | 1925-05-28 | Fuel injection engine | |
US1781327A (en) * | 1924-11-16 | 1930-11-11 | Goinard Joseph Marie Arsene | Carburetor for internal-combustion engines supplied with heavy oil |
US2071062A (en) * | 1933-09-21 | 1937-02-16 | Oil Engine Dev Company | Oil engine |
DE905902C (en) * | 1949-10-02 | 1954-03-08 | Erich Baentsch | Process for the production of heavy vapor-air mixtures for combustion under excess pressure, especially for low-compression internal combustion engines |
US2761431A (en) * | 1950-02-22 | 1956-09-04 | Daimler Benz Ag | Injection type internal combustion engine with precombustion chamber |
DE958789C (en) * | 1952-07-06 | 1957-02-21 | Daimler Benz Ag | Internal combustion engine with mixture control and with external ignition of the mixture |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050217639A1 (en) * | 2002-10-02 | 2005-10-06 | Hill Phillip G | Glow ring ignition assist for internal combustion engine |
US20060081212A1 (en) * | 2002-10-02 | 2006-04-20 | Hill Philip G | Direct injection combustion chamber geometry |
US7213564B2 (en) * | 2002-10-02 | 2007-05-08 | Westport Power Inc. | Direct injection combustion chamber geometry |
US7281514B2 (en) * | 2002-10-02 | 2007-10-16 | Westport Power Inc. | Glow ring ignition assist for internal combustion engine |
US20080196690A1 (en) * | 2006-11-28 | 2008-08-21 | Isamu Hotta | Internal combustion engine with auxiliary combustion chamber |
US7814883B2 (en) * | 2006-11-28 | 2010-10-19 | Nissan Motor Co., Ltd. | Internal combustion engine with auxiliary combustion chamber |
US10287970B1 (en) * | 2017-12-07 | 2019-05-14 | Caterpillar Inc. | Fuel injection system |
WO2021203578A1 (en) * | 2020-04-07 | 2021-10-14 | 天津大学 | Device for optimizing oil-gas mixing process of internal combustion engine |
US11346275B2 (en) | 2020-04-07 | 2022-05-31 | Tianjin University | Apparatus for optimizing fuel/air mixing process of internal combustion engine |
US11905903B2 (en) * | 2020-07-24 | 2024-02-20 | Powerhouse Engine Solutions Switzerland IP Holding GmbH | Port heating system and method |
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