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
  • F02B19/00—Engines characterised by precombustion chambers
  • F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
  • F02B19/1019—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber
  • F02B19/108—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber with fuel injection at least into pre-combustion chamber, i.e. injector mounted directly in the pre-combustion chamber
• • 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
  • F02B19/00—Engines characterised by precombustion chambers
  • F02B19/12—Engines characterised by precombustion chambers with positive ignition
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
  • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
  • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
  • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
  • F02M21/0242—Shut-off valves; Check valves; Safety valves; Pressure relief valves
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
  • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
  • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
  • F02M21/0248—Injectors
  • F02M21/0275—Injectors for in-cylinder direct injection, e.g. injector combined with spark plug
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M57/00—Fuel-injectors combined or associated with other devices
  • F02M57/06—Fuel-injectors combined or associated with other devices the devices being sparking plugs
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
  • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
  • F02P13/00—Sparking plugs structurally combined with other parts of internal-combustion engines
• • 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
• • 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
  • Y02T10/30—Use of alternative fuels, e.g. biofuels

Definitions

• the invention relates to an internal combustion engine according to the preamble of claim 1. Furthermore, the invention relates to a prechamber insert for a gas engine according to the preamble of claim 7 and a fuel injector for a diesel engine according to the preamble of claim 10.
• DE 10 2012 203 700 A1 designed as a gas engine internal combustion engine with at least one cylinder is known.
• the respective cylinder of the gas engine has a main combustion chamber and a prechamber, the prechamber being provided by a prechamber insert.
• the antechamber insert is also referred to as a pre-chamber holder.
• the prechamber insert provides the prechamber, furthermore, the prechamber insert receives relevant assemblies for the gas supply and gas ignition. To the gas supply serving assemblies counts a check valve, to the components relevant for the gas ignition counts a spark plug.
• the prechamber insert is mounted according to DE 10 2012 203 700 A1 on a cylinder head of the respective cylinder between gas exchange valves of the respective cylinder, wherein the prechamber insert is inserted in a recess in the cylinder head of the respective cylinder and sealed relative to the cylinder head.
• the Vorschlinger has a cylindrical shape and therefore over a circular in cross-section contour.
• the present invention has the object to provide a novel internal combustion engine such as a gas engine, a novel Vorschgreg for a gas engine and a novel fuel injector for a diesel engine.
• an internal combustion engine according to claim 1 an inserted into the recess in the cylinder head of the respective cylinder portion of the respective assembly, which serves for fuel supply and / or fuel ignition is contoured oval in cross-section, wherein a lying in the sealing area boundary surface of this section of the respective assembly in the circumferential direction continuous convex contoured outward is contoured.
• an assembly serving for fuel supply and / or fuel ignition at the section via which it is inserted into the recess in the cylinder head is no longer circular in cross-section but rather oval according to the invention.
• the respective fuel supply and / or fuel ignition assembly carries axially offset seals at the boundary surface in the sealing area, namely a lower seal facing the main combustion chamber and an upper gasket remote from the main combustion chamber. The seals allow a good seal of the fuel supply and / or fuel ignition assembly in the cylinder head.
• a gas guide serving check valve of Vorschnotes is next to a gas ignition serving spark plug of Vorschnotes such above a prechamber of Vorammerer textees taken in Vorhunter nutrition that the check valve below the lower Seal is positioned.
• a gas feed bore serving to guide the gas, via which gas can be conducted in the direction of the prechamber of the respective prechamber insert, opens at the boundary surface in the sealing region between the lower seal and the upper seal.
• the prechamber insert according to the invention is in claim 7 and the fuel injector according to the invention is defined in claim 10.
• FIG. 1 shows a cross section through a cylinder of an inventive, designed as a gas engine internal combustion engine in the region of a Vorschmonyers of the cylinder.
• FIG. 2 shows a plan view of a pre-chamber insert according to the invention of the gas engine of FIG. 1;
• FIG. 3 shows a perspective view of the antechamber insert.
• the present invention relates to a preferably designed as a gas engine internal combustion engine and a Vorschgan for a gas engine.
• the invention can also be used in other internal combustion engines, such as diesel engines, in particular in the area of fuel injectors of diesel engines.
• the invention will be described with reference to Figs. 1 to 3 for the preferred application of a gas engine and a prechamber insert for a gas engine.
• Fig. 1 shows a cross section through a gas engine 10 in the region of a cylinder 1 1 of the gas engine 10, wherein from the cylinder 1 1, a cylinder head 12 is shown.
• gas exchange valves 13 are formed, which, starting from a camshaft, can be opened and closed.
• the cylinder head 12 defines at least in sections a main combustion chamber 14 of the respective cylinder 1 1 below.
• the cylinder 1 1 of the gas engine 10 is associated with a Vorschschdonsky 15, which forms a pre-chamber 16 for the cylinder 1 1 and also for the gas supply and for the
• Gas ignition carries relevant components.
• the Vorschmon 15 each shown in isolation.
• a check valve 17 wherein a spark plug 18 counts among the components of the prechamber insert 15 which are relevant for the gas ignition.
• the Vorschnet 15 is mounted on the cylinder head 12 of the cylinder 1 1 of the gas engine 10 such that the Vorschdon 15 is inserted into a recess 19 in the cylinder head 12 of the respective cylinder 1 1 and sealed relative to the cylinder head 12, wherein the Vorhuntani 19 on the cylinder head 12 in Area between the gas exchange valves 13 of the respective cylinder 1 1 of the gas engine 10 is receiving.
• the oval contouring of projecting into the recess 19 of the cylinder head 12 portion 20 of the Vorschdones 15, the space available on the cylinder head 12 space can be optimally utilized, in particular, the check valve 17 of the Vorschvones 15 are positioned at a small distance to the prechamber 16 of the Vorschrienes 15 so that a bore 22 of the prechamber insert 15 extending between the check valve 17 and the pre-chamber 16 and serving to guide the gas can be executed with minimum length and thus minimal volume. This makes it possible to introduce gas with high precision into the antechamber 16 of the prechamber insert 15.
• seals 23 and 24 are preferably O-ring seals or, alternatively, molded seals.
• the gas guide serving check valve 15 of the Vorschnoues 15 is shown in FIG. 3 laterally adjacent to the spark plug 18 of the Vorschnoues 15, which is used for gas ignition, and above the pre-chamber 16 of the Vorschnoues 15 in the Vorhuntbor 15, namely below the lower seal 24th
• a gas supply bore 25 serving to guide the gas opens with a recess or opening 26 at the boundary surface 21 of the pre-chamber insert 15 located in the sealing area between the two seals 23 and 24.
• fuel injectors can be designed in an analogous manner.
• a fuel injector is mounted on a cylinder head of a cylinder of the diesel engine such that the fuel! Njektor, in particular an injector sleeve thereof, is inserted into a recess in the cylinder head of the cylinder and sealed against the same.
• a section of the fuel injector, in particular the injector sleeve, which can be inserted into the recess in the cylinder head of the cylinder is contoured oval in cross-section, wherein a boundary surface of this section of the fuel injector, in particular the injector sleeve lying in the sealing region, extends continuously convexly outward in the circumferential direction is curved contoured.

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• 2014
  • 2014-10-30 DE DE102014016127.7A patent/DE102014016127A1/de not_active Withdrawn
• 2015
  • 2015-09-30 EP EP15781600.0A patent/EP3212909A1/de not_active Ceased
  • 2015-09-30 JP JP2017523382A patent/JP6483821B2/ja not_active Expired - Fee Related
  • 2015-09-30 WO PCT/EP2015/072637 patent/WO2016066365A1/de active Application Filing
  • 2015-09-30 CN CN201580059041.0A patent/CN107110003B/zh not_active Expired - Fee Related
  • 2015-09-30 KR KR1020177013427A patent/KR101973301B1/ko active IP Right Grant
  • 2015-09-30 US US15/519,922 patent/US20170328266A1/en not_active Abandoned

Non-Patent Citations (2)

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