EP1378641A2 - Zweitakt- und Viertakt-Brennkraftmaschine mit niedriger Schadstoffemission mit Zylinderspülung und Aufladungsmöglichkeit - Google Patents

Zweitakt- und Viertakt-Brennkraftmaschine mit niedriger Schadstoffemission mit Zylinderspülung und Aufladungsmöglichkeit Download PDF

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Publication number
EP1378641A2
EP1378641A2 EP20030352008 EP03352008A EP1378641A2 EP 1378641 A2 EP1378641 A2 EP 1378641A2 EP 20030352008 EP20030352008 EP 20030352008 EP 03352008 A EP03352008 A EP 03352008A EP 1378641 A2 EP1378641 A2 EP 1378641A2
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder
chamber
crown
valves
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.)
Withdrawn
Application number
EP20030352008
Other languages
English (en)
French (fr)
Inventor
Didier Le Bleis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EURL DLB
Original Assignee
EURL DLB
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 EURL DLB filed Critical EURL DLB
Publication of EP1378641A2 publication Critical patent/EP1378641A2/de
Priority to US10/855,627 priority Critical patent/US20040216705A1/en
Withdrawn legal-status Critical Current

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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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/02—Engines with reciprocating-piston pumps; Engines with crankcase pumps
    • F02B33/06—Engines with reciprocating-piston pumps; Engines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps
    • F02B33/10—Engines with reciprocating-piston pumps; Engines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps with the pumping cylinder situated between working cylinder and crankcase, or with the pumping cylinder surrounding working cylinder
    • F02B33/14—Engines with reciprocating-piston pumps; Engines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps with the pumping cylinder situated between working cylinder and crankcase, or with the pumping cylinder surrounding working cylinder working and pumping pistons forming stepped piston
    • 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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/14—Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke
    • 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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/14—Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke
    • F02B25/16—Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke the charge flowing upward essentially along cylinder wall opposite the inlet ports
    • 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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/20—Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18
    • F02B25/22—Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18 by forming air cushion between charge and combustion residues
    • 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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/02—Engines with reciprocating-piston pumps; Engines with crankcase pumps
    • F02B33/26—Four-stroke engines characterised by having crankcase pumps

Definitions

  • FIGURE 1 A first figure.
  • the Piston (6) allows, by releasing the lights, the transfer into the cylinder of Fresh gas precompressed in (4) in the pump housing.
  • the inlet valves (C3) of the chamber (5) close, the pressures downstream and upstream of these valves (C3) balancing, the valves (C2) for fresh air intake of the chamber (2) are closed.
  • the valves (C1) for admitting the Fresh Gas mixture from the pump housing (4) are closed.
  • a Clean Air cap represented by the arrow (AP) obstructs the Exhaust light (3) under the effect of the exhaust return pressure wave (arrow GB).
  • Fresh gases (arrow GF) do not can no longer mix with burnt gases (GB), and invade the Combustion chamber (1) in repelling pure air.
  • the Piston (6) compresses the Fresh Gases in (1), creates a depression in (2) and (4), causing the opening of the corresponding valves (C1) and (C2) and therefore the filling with Fresh Air in the chamber (2), and with a mixture of Fresh Gas from the pump housing (4).
  • the Piston (6) descends under the thrust of the gases which expand in (1).
  • the lights (8) of the crown and (9) of the cylinder no longer communicate: there follows a depression in the chamber (5) which causes the opening of its valves (C3) and the filling with Fresh Gas mixture of this bedroom.
  • the invention applied to the 4-stroke engine improves the evacuation of burnt gases in phase Exhaust.
  • the Combustion Chamber is swept by Clean Air under pressure entering through the transfer lights, discharging Burnt Gases into the atmosphere through the Exhaust valve before being driven back by the Piston.
  • the Fresh Gas admitted by the intake valve into the combustion are completed at the bottom dead center by a supply of pressurized pure air springing from the transfer lights, thus ensuring optimal filling of the cylinder.
  • the invention makes it possible to improve the cleanliness, the power and the efficiency of 4-Stroke engines, positive ignition and Diesel. It is characterized by a Piston with crown (D3) evolving in a cylinder (D8) and a cylinder (D9), forming with them an Annular chamber (D1) admitting Clean Air via the valves (C19) when the Piston (D3) rises, and compressing it during its descent, then transferring it to the Combustion chamber (D2), the cap of the Piston (D3) discovering the transfer lights (T1) shortly before passing the bottom dead center, allowing thus in the intake phase a better filling of the cylinder and in the exhaust phase a improved evacuation of burnt gases.
  • the diameter of the Piston Skirt which has a sealing segment at its base, is less than the diameter of the piston head, which has 2 or 3 segments.
  • the cylinder (D8) is completed by a smaller diameter cylinder (D9) in which slides the Piston Skirt (D3), forming with it an Annular precompression chamber.
  • the transfer lights (T1) are discovered by the Piston in the Exhaust phase after the opening of the exhaust valve.
  • the Pure Air Compression Chamber through a air filter, communicates with the atmosphere through valves regulating its supply.
  • the piston (D3) discovers the transfer lights (T1) allowing with Clean Air compressed in (D1) to invade the combustion chamber (D2) and completes the intake Fresh Gas entering through the inlet valve (D7) then open.
  • the exhaust (D6) and inlet (D7) valves are closed. Gas Fees allowed previously are compressed in (D2).
  • the piston (D3) going up creates a depression in (D1), opening the valves (C19) and allowing the filling of the Annular chamber (D1) with Pure Air.
  • the Piston at the end of expansion, discovers the lights (T1):
  • the compressed air in (D1) enters the Combustion chamber (D2) and pushes the Burned Gases towards the atmosphere through the Exhaust valve ( D6) already open.
  • the piston during its ascent, completes the evacuation of burnt gases and clean air.
  • the number, shape, location of the transfer lights can vary in order to obtain maximum efficiency by modifying the distribution diagrams. It is the same with regard to the volumes of the Annular chamber and of the Piston with crown.
  • the device can be used as an air compressor on 4-stroke engines, it is then characterized by a Piston with crown (D3) evolving in a cylinder (D8) and a cylinder (D9), forming with these an Annular chamber (D1) admitting pure air by means of valves (C19) during of the piston rise (D3), and compressing it during its descent to supply an external tank provided with a non-return valve, by means of transfer passages leading to an external pipe supplying this tank, the engine operating then as a conventional engine, and the invention as an integrated air compressor.
  • the piston differs from the first model, by its simple crown devoid of lights, which may or may not have a segment, depending on the option chosen. It evolves in a cylinder adapted comprising, in its lower part, an annular chamber in which are machined transfers intended for the evacuation of burnt gases controlled by the crown of the piston which, at bottom dead center, retains these gases in this sufficiently large chamber to relax them and allow fresh gas to enter the combustion chamber precompressed in the motor pump housing, then, during its ascent, retains these fresh gases in the combustion chamber via the burnt gases, which are released in a specific area, for the best performance of the engine, shortly before or shortly after the closing of the combustion chamber exhaust light, by the cap of the piston, to be forcefully driven into the atmosphere in the descending phase.
  • the expansion of the piston is extended to bottom dead center by the transfer of the burnt gases in the annular chamber where they apply pressure to the regrowing crown, by its underside, the gases from the previous combustion to the atmosphere.
  • the efficiency is increased by a better filling of the cylinder, which, in phase intake is under vacuum until the lights communicating with the lower cylinder of the piston-pump, which then in compression propels clean air or injected fuel into the combustion chamber, allowing an intake speed and optimal filling.
  • combustion is improved by the pure air propelled into the chamber combustion, as before, it sweeps the cylinder and promotes the oxidation of gas.
  • This piston-pump system is also suitable for Diesel and Petrol two-stroke engines because, capable send a sufficient volume of air into the combustion chamber without the aid of a compressor or valves while retaining the conventional pressure lubrication system with four-stroke engines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
EP20030352008 2002-04-15 2003-04-14 Zweitakt- und Viertakt-Brennkraftmaschine mit niedriger Schadstoffemission mit Zylinderspülung und Aufladungsmöglichkeit Withdrawn EP1378641A2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/855,627 US20040216705A1 (en) 2002-04-15 2004-05-28 Thermal 2 stroke engine with reduced pollution and 4 stroke engine with scavenging and volumetric supercharging

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0204698A FR2838478B1 (fr) 2002-04-15 2002-04-15 Moteur thermique 2 temps a pollution reduite et 4 temps a balayage et suralimentation volumetrique
FR0204698 2002-04-15

Publications (1)

Publication Number Publication Date
EP1378641A2 true EP1378641A2 (de) 2004-01-07

Family

ID=28459849

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030352008 Withdrawn EP1378641A2 (de) 2002-04-15 2003-04-14 Zweitakt- und Viertakt-Brennkraftmaschine mit niedriger Schadstoffemission mit Zylinderspülung und Aufladungsmöglichkeit

Country Status (2)

Country Link
EP (1) EP1378641A2 (de)
FR (1) FR2838478B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111237049A (zh) * 2020-04-14 2020-06-05 常君辰 一种负压发动机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2010241402B1 (en) * 2010-11-12 2011-11-24 Cits Engineering Pty Ltd Two-Stroke Engine Porting Arrangement

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2508391A (en) * 1946-04-16 1950-05-23 Charles M Huntington Two-cycle internal-combustion engine
US3182645A (en) * 1963-07-24 1965-05-11 Ora E Wilson Internal combustion engine
DE2743780A1 (de) * 1977-09-29 1979-04-12 Fichtel & Sachs Ag Einzylinder-hubkolben-brennkraftmaschine
DE2901815A1 (de) * 1979-01-18 1980-07-31 Fichtel & Sachs Ag Viertakt-brennkraftmaschine mit stufenkolben
JPS588231A (ja) * 1981-07-07 1983-01-18 Kawasaki Heavy Ind Ltd ２サイクルエンジン
DE4007466A1 (de) * 1990-03-09 1991-02-14 Franz Josef Knott Spuel- und schmierverfahren fuer hubkolbenmotoren
US6145488A (en) * 1999-07-15 2000-11-14 Mph Motors, Inc. Reduced volume scavenging system for two cycle engines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111237049A (zh) * 2020-04-14 2020-06-05 常君辰 一种负压发动机

Also Published As

Publication number Publication date
FR2838478B1 (fr) 2004-05-28
FR2838478A1 (fr) 2003-10-17

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