EP0025503A1 - Moteur à piston alternatif - Google Patents

Moteur à piston alternatif Download PDF

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Publication number
EP0025503A1
EP0025503A1 EP80104573A EP80104573A EP0025503A1 EP 0025503 A1 EP0025503 A1 EP 0025503A1 EP 80104573 A EP80104573 A EP 80104573A EP 80104573 A EP80104573 A EP 80104573A EP 0025503 A1 EP0025503 A1 EP 0025503A1
Authority
EP
European Patent Office
Prior art keywords
connecting rod
reciprocating engine
engine according
piston
crankshaft
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Withdrawn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
EP80104573A
Other languages
German (de)
English (en)
Inventor
Jürgen Scherf
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.)
Scherf Eva
Original Assignee
Scherf Eva
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
Priority claimed from DE19792935073 external-priority patent/DE2935073A1/de
Priority claimed from DE19792935977 external-priority patent/DE2935977A1/de
Application filed by Scherf Eva filed Critical Scherf Eva
Publication of EP0025503A1 publication Critical patent/EP0025503A1/fr
Withdrawn legal-status Critical Current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
    • F02B41/00—Engines characterised by special means for improving conversion of heat or pressure energy into mechanical power
    • F02B41/02—Engines with prolonged expansion
    • F02B41/04—Engines with prolonged expansion in main cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
    • F01B9/02—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft
    • 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
    • F02B75/00—Other engines
    • F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
    • F02B75/048—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable crank stroke length

Definitions

  • the invention relates to a reciprocating piston engine with a connecting rod formed by two connecting rod sections, one connecting rod section with the end facing away from the piston pin and the other connecting rod section with the end facing away from the crankshaft journal being articulated on a pivoting lever which is at a distance apart from the piston center line with the end facing away from the connecting rod sections on the motor housing.
  • the invention has the task of keeping the pivoting lever free of bending moments in the area of the bearings for the connecting rod sections and of improving the performance.
  • This object is achieved in that the two connecting rod sections with their mutually facing ends engage axially on a bearing on the pivot lever and that the pivot lever with its housing-side bearing is adjustably arranged on a circular arc.
  • the lengths of the upper and lower connecting rod sections and the pivoting lever are preferably essentially in the ratio 100: 82: 168.
  • the reciprocating piston engine there is one work cycle, one charge cycle and one compression cycle in the cylinder for each revolution of the crankshaft.
  • the purge air or the fuel-air mixture can be supplied to the cylinder interior via valves and the exhaust gases can be discharged via piston-controlled slots. In this way, a three-stroke sequence is achieved and an operating stroke is made possible with each revolution of the crankshaft.
  • the longer piston stroke downwards allows the exhaust slots to either be shifted towards the bottom dead center or to extend the charging cycle if left in the cylinder wall.
  • valves can be operated as required, e.g. via camshafts or rods. It corresponds to the idea of the invention to actuate the valves by means of electromagnets, which help to reduce the mechanical expenditure of the engine.
  • the valves themselves can be controllable depending on the load, pressure or speed.
  • the invention suggests variations design of the reciprocating piston engine in that the two connecting rod sections and / or the crankshaft radius and / or the length of the pivoting lever or the distance of the bearing point for the pivoting lever from the longitudinal axis of the crankshaft can be changed. In this way it is possible, for example, to change the piston speed at top dead center while the speed remains the same, which also influences the course of the combustion.
  • a torque gain can be achieved which, as tests have shown, can increase up to four times the value of a normal reciprocating piston engine in the work cycle and lead to a corresponding reduction in the compression cycle.
  • the swivel lever In addition to its control function, the swivel lever also acts as a crosshead and in this way reduces the lateral friction of the piston, possibly up to a quarter of that of the normal reciprocating piston engine.
  • the achieved faster immersion of the piston in the work cycle also results in a faster expansion of the combustion gases and a greater temperature utilization of the energy or more favorable thermal load for the piston engine and less nitrogen oxides.
  • the charging cycle begins in the position of the piston of FIG. 4.
  • either air or a fuel-air mixture is introduced into cylinder 1 via inlets 16 controlled by valves 15.
  • the piston 2 moves about 146 by a partial stroke further down to the bottom dead center and further into the position of FIG. 5. The flushing and the charge change can thus take place over an extremely long period of time.
  • the reciprocating piston engine can equally be used as a gasoline or diesel engine, with the latter also being able to carry out direct injection without a prechamber.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Supercharger (AREA)
EP80104573A 1979-08-30 1980-08-02 Moteur à piston alternatif Withdrawn EP0025503A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19792935073 DE2935073A1 (de) 1979-08-30 1979-08-30 Hubkolbenmotor
DE2935073 1979-08-30
DE19792935977 DE2935977A1 (de) 1979-09-06 1979-09-06 Hubkolbenmotor.
DE2935977 1979-09-09

Publications (1)

Publication Number Publication Date
EP0025503A1 true EP0025503A1 (fr) 1981-03-25

Family

ID=25780786

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104573A Withdrawn EP0025503A1 (fr) 1979-08-30 1980-08-02 Moteur à piston alternatif

Country Status (1)

Country Link
EP (1) EP0025503A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3521626A1 (de) * 1985-06-15 1986-12-18 Reinhard R. 3180 Wolfsburg Gospodar Mit rueckschub-verdichtungs-regelung betriebene brennkraftmaschine
WO1988008922A1 (fr) * 1987-05-08 1988-11-17 Gerhard Mederer Machine motrice ou de travail, notamment machine a combustion interne
DE4120822A1 (de) * 1991-06-24 1993-01-07 Martin Schmidt Vorrichtung zur steuerung der desachsierung des kurbeltriebes insbesondere fuer brennkraftmaschinen
CN1085781C (zh) * 1997-10-30 2002-05-29 王长征 切点爆发式内燃机
EP1215380A3 (fr) * 2000-12-15 2003-05-02 Nissan Motor Co., Ltd. Mécanisme-vilebrequin pour un moteur à combustion interne avec entraínement multi-barres
GB2392475A (en) * 2002-08-27 2004-03-03 Edward Allen I.c. engine connecting rod arrangement
DE10353018A1 (de) * 2003-11-13 2005-06-23 Strauchmann, Rüdiger Hubkolbenmaschine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR662187A (fr) * 1927-10-01 1929-08-03 Moteur à piston à course variable
FR977781A (fr) * 1942-11-10 1951-04-05 Dispositif de transmission par bielle et manivelle pour moteurs à combustion interne
DE2413947A1 (de) * 1973-03-27 1974-10-17 Constant Guy Explosionsmotor
DE2346887A1 (de) * 1973-09-18 1975-04-03 Daimler Benz Ag Zweitakt-hubkolben-brennkraftmaschine
DE2612961A1 (de) * 1976-03-26 1977-10-06 Hans J Wendt Elektronisch gesteuerter verbrennungsmotor
DE2734715A1 (de) * 1977-08-02 1979-02-22 Scherf Geb Kindermann Eva Hubkolbenmotor
DE2842154A1 (de) * 1977-09-30 1979-04-26 Toyoda Chuo Kenkyusho Kk Verbrennungsmotor
FR2425544A1 (fr) * 1978-05-09 1979-12-07 Fabre Laurent Moteur deux temps a haut rendement

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR662187A (fr) * 1927-10-01 1929-08-03 Moteur à piston à course variable
FR977781A (fr) * 1942-11-10 1951-04-05 Dispositif de transmission par bielle et manivelle pour moteurs à combustion interne
DE2413947A1 (de) * 1973-03-27 1974-10-17 Constant Guy Explosionsmotor
DE2346887A1 (de) * 1973-09-18 1975-04-03 Daimler Benz Ag Zweitakt-hubkolben-brennkraftmaschine
DE2612961A1 (de) * 1976-03-26 1977-10-06 Hans J Wendt Elektronisch gesteuerter verbrennungsmotor
DE2734715A1 (de) * 1977-08-02 1979-02-22 Scherf Geb Kindermann Eva Hubkolbenmotor
DE2842154A1 (de) * 1977-09-30 1979-04-26 Toyoda Chuo Kenkyusho Kk Verbrennungsmotor
FR2425544A1 (fr) * 1978-05-09 1979-12-07 Fabre Laurent Moteur deux temps a haut rendement

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3521626A1 (de) * 1985-06-15 1986-12-18 Reinhard R. 3180 Wolfsburg Gospodar Mit rueckschub-verdichtungs-regelung betriebene brennkraftmaschine
WO1988008922A1 (fr) * 1987-05-08 1988-11-17 Gerhard Mederer Machine motrice ou de travail, notamment machine a combustion interne
EP0292603A1 (fr) * 1987-05-08 1988-11-30 Gerhard Mederer Machines à conversion d'énergie, en particulier un moteur à combustion interne
DE4120822A1 (de) * 1991-06-24 1993-01-07 Martin Schmidt Vorrichtung zur steuerung der desachsierung des kurbeltriebes insbesondere fuer brennkraftmaschinen
CN1085781C (zh) * 1997-10-30 2002-05-29 王长征 切点爆发式内燃机
EP1215380A3 (fr) * 2000-12-15 2003-05-02 Nissan Motor Co., Ltd. Mécanisme-vilebrequin pour un moteur à combustion interne avec entraínement multi-barres
GB2392475A (en) * 2002-08-27 2004-03-03 Edward Allen I.c. engine connecting rod arrangement
DE10353018A1 (de) * 2003-11-13 2005-06-23 Strauchmann, Rüdiger Hubkolbenmaschine
DE10353018B4 (de) * 2003-11-13 2008-12-18 Strauchmann, Rüdiger Hubkolbenmaschine

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19820301

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SCHERF, JUERGEN