EP0922841A2 - Moteurs à deux temps avec tiroir d'échappement commandé par le piston - Google Patents

Moteurs à deux temps avec tiroir d'échappement commandé par le piston Download PDF

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Publication number
EP0922841A2
EP0922841A2 EP98122482A EP98122482A EP0922841A2 EP 0922841 A2 EP0922841 A2 EP 0922841A2 EP 98122482 A EP98122482 A EP 98122482A EP 98122482 A EP98122482 A EP 98122482A EP 0922841 A2 EP0922841 A2 EP 0922841A2
Authority
EP
European Patent Office
Prior art keywords
piston
slide valve
outlet
slot
internal combustion
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Withdrawn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
EP98122482A
Other languages
German (de)
English (en)
Other versions
EP0922841A3 (fr
Inventor
Alberto Tscherrig
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0922841A2 publication Critical patent/EP0922841A2/fr
Publication of EP0922841A3 publication Critical patent/EP0922841A3/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Withdrawn legal-status Critical Current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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two

Definitions

  • the invention relates to a piston internal combustion engine, in particular a two-stroke engine with regulated outlet of the burned exhaust gases through a piston-controlled slide in the cylinder wall at the exhaust slot.
  • the piston fulfills the during the upward movement Function of a charge pump when sucking in the air-fuel mixture first into the The crankcase and at the same time the air-fuel mixture in the combustion chamber condensed. After the ignition has taken place, the piston has the downward movement Function of power transmission from the explosion of the air-fuel mixture to the Crankshaft using the connecting rod.
  • the slots are free, both for the outlet and for the inlet. The problem with today's two-stroke engines is that at low revs the outlet slot opens relatively slowly, which leaves a lot of time to flow out Exhaust gases.
  • the object of the invention is a piston internal combustion engine with a regulated outlet to find which does not have the disadvantages mentioned.
  • the task will be like follows solved: The outlet slot is closed before the piston starts moving upwards starts to prevent fresh air directly from the inlet slot to the outlet slot leaves.
  • This device reduces gasoline consumption.
  • the invention is intended to nevertheless benefit from the advantages of the known two-stroke engines has: Simple construction, low weight, few moving parts, therefore small Friction losses, compact dimensions and less expensive production.
  • the two-stroke engine (in Fig. 1) consists of a crankcase, a cylinder and a Piston (1).
  • the piston (1) is connected to the pin via a connecting rod with the crankshaft connected.
  • Two notches (8) are arranged along the piston (1) and serve these as guidance and control of the slide valve (6).
  • In the cylinder wall (3) of the engine there is an outlet slot (4) on the exhaust duct. Between the outlet slot (4) and the exhaust duct is a closing device, slide valve (6).
  • the slide valve (6) has a continuous opening (5) in which same dimensions as the outlet slot (4).
  • At the bottom of the vertical Slider valves (6) are horizontal extensions designed as drivers (7).
  • the Carriers (7) slide, both in the cylinder wall (3) and in the notches (8) the piston (1).
  • the piston (1) controls the slide valve (6) close to the top and bottom dead center. In between, the slide valve (6) remains in its through the piston (1) predefined location.
  • the two-stroke engine shown works as follows:
  • the piston controls the gas exchange in this engine in two ways.
  • the simpler explanation we write of the piston upper part for the known opening and closing of the in and Outlet slots, with the piston near the bottom dead center, the inlet and outlet slots opens and closes again during the subsequent upward movement.
  • At the arrangement according to the invention serves the lower piston part to control the slide valve, by moving the piston to the slide valve at the top and bottom dead center moves, with most of the movement of the piston the slide valve remains in Resting position.
  • the inlet and outlet slots are closed by the upper piston part. But the slide valve is open. At this time, the opening of the plate valve corresponds in size to the diameter of the outlet slot.
  • the piston upper part first opens the outlet slot during the downward movement. The burned gases can escape through the exhaust duct. At this point, both the outlet slot and the slide valve are open. Due to the continued downward movement, the lower piston part closes the slide valve and the upper piston part opens the inlet slot. At the bottom dead center, the inlet slot is fully open and the outlet slot is closed.
  • the cylinder can now fill with a fresh air / fuel mixture. The air-fuel mixture is compressed by the upward movement of the piston. Shortly at the top dead center, the lower part of the piston opens the slide valve and the ignition takes place, again causing the piston to move downwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
EP98122482A 1997-12-12 1998-11-27 Moteurs à deux temps avec tiroir d'échappement commandé par le piston Withdrawn EP0922841A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH286497 1997-12-12
CH286497 1997-12-12

Publications (2)

Publication Number Publication Date
EP0922841A2 true EP0922841A2 (fr) 1999-06-16
EP0922841A3 EP0922841A3 (fr) 2000-02-16

Family

ID=4243311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98122482A Withdrawn EP0922841A3 (fr) 1997-12-12 1998-11-27 Moteurs à deux temps avec tiroir d'échappement commandé par le piston

Country Status (1)

Country Link
EP (1) EP0922841A3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100361000C (zh) * 2005-02-24 2008-01-09 友达光电股份有限公司 液晶面板与其制造方法
ITCZ20100008A1 (it) * 2010-07-05 2012-01-06 Domenico Pettinato Gruppo termico di motore a due tempi di 125 centimetri cubici con valvola a ghigliottina sulla luce di scarico

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB213398A (en) * 1923-02-27 1924-04-03 Fernand Laguesse Improvements in two-stroke internal combustion engines
US3733837A (en) * 1970-11-18 1973-05-22 British Oxygen Co Ltd Thermodynamic reciprocating machine
GB2145467A (en) * 1983-08-02 1985-03-27 Alexander Macfadzean Two-stroke I.C. engine exhaust ports

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100361000C (zh) * 2005-02-24 2008-01-09 友达光电股份有限公司 液晶面板与其制造方法
ITCZ20100008A1 (it) * 2010-07-05 2012-01-06 Domenico Pettinato Gruppo termico di motore a due tempi di 125 centimetri cubici con valvola a ghigliottina sulla luce di scarico

Also Published As

Publication number Publication date
EP0922841A3 (fr) 2000-02-16

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