FR2628483A1 - Replacement crankcase cover for moped engine - has adaptor for gas pipe with valve to improve engine performance - Google Patents

Replacement crankcase cover for moped engine - has adaptor for gas pipe with valve to improve engine performance Download PDF

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Publication number
FR2628483A1
FR2628483A1 FR8803641A FR8803641A FR2628483A1 FR 2628483 A1 FR2628483 A1 FR 2628483A1 FR 8803641 A FR8803641 A FR 8803641A FR 8803641 A FR8803641 A FR 8803641A FR 2628483 A1 FR2628483 A1 FR 2628483A1
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FR
France
Prior art keywords
valve
replacement
engine
moped
adaptor
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Withdrawn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
FR8803641A
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French (fr)
Inventor
Belmiro De Matos
Paul Fernandez
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.)
FERNANDEZ SARL
Original Assignee
FERNANDEZ SARL
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 FERNANDEZ SARL filed Critical FERNANDEZ SARL
Priority to FR8803641A priority Critical patent/FR2628483A1/en
Publication of FR2628483A1 publication Critical patent/FR2628483A1/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Withdrawn legal-status Critical Current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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/20—Shapes or constructions of valve members, not provided for in preceding subgroups of this group
    • F01L3/205—Reed valves
    • 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
    • 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
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

A replacement crankcase cover, especially for a 'Vespa' moped two-stroke engine, is made with an aperture for the passage of gases. The aperture is equipped with an adapter (6) for an intake pipe (3), fixed to the crankcase by three screws (4) in threaded holes (5). The inlet pipe can be made in two versions, allowing it to be adapted to all carburettors with a diameter of 12-21 mm., while two seals (7) ensure that the joints are gastight. The intake pipe can be made to contain a carbon-fibre flap valve to control the gas flow. ADVANTAGE - Improved engine performance without modification.

Description

La présente invention concerne un procédé permettant de remplacer le carter droit d'origine des moteurs de cyclomoteurs "deux temps" par un carter d'admission par clapet.The present invention relates to a method making it possible to replace the original straight casing of "two-stroke" moped engines with an intake casing by valve.

Le procédé connu utilisait un carter droit n'ayant aucun type d'admission et un carter gauche où se positionnait le carburateur, qui recevait une admission par rotation par masse du villebrequin.The known method used a right crankcase having no type of intake and a left crankcase where the carburetor was positioned, which received an intake by rotation by mass of the crankshaft.

Le procédé selon l'invention consiste 9 remouler le carter droit et y pratiquer une ouverture permettant le passage des gaz.The method according to the invention consists in remolding the right casing and making an opening therein allowing the passage of gases.

A la sortie de cette ouverture, s'adapte un clapet sur lequel se fixe une pipe d'admission.At the exit of this opening, a valve adapts to which is fixed an intake pipe.

Le carter d'admission par clapet permet de monter tous les carburateurs å partir du diamètre 12 jusqu'au diamètre 21, à l'aide de deux versions de pipes d'admission. L'ouverture du carter gauche est obstruée.The inlet valve housing allows mounting all carburetors from diameter 12 to diameter 21, using two versions of intake pipes. The opening of the left crankcase is obstructed.

L'admission ainsi effectuée permet un meilleur passage des gaz et améliore les performances du moteur à tout régime mais ne modifie en rien le moteur ou sa puissance.The intake thus carried out allows a better passage of the gases and improves the performance of the engine at any speed but does not modify the engine or its power.

Selon l'invention (figure 1), le carter droit remoulé (1) laisse un passage (2) pour les gaz. A l'extérieur du carter, contre l'ouverture, vient se placer le clapet (3) constitué d'un corps en PVC, d'une buttée métallique et d'un clinquant en fibre de carbone. Sur ce clapet s'adapte une pipe d'admission (fil). According to the invention (FIG. 1), the remolded right casing (1) leaves a passage (2) for the gases. On the outside of the casing, against the opening, is placed the valve (3) consisting of a PVC body, a metal abutment and a carbon fiber foil. On this valve fits an intake pipe (wire).

Le tout est fixé par trois vis (5) se vissant dans trois trous taraudés (6) dans le carter.The whole is fixed by three screws (5) which are screwed into three tapped holes (6) in the housing.

L'étanchéité du système est garantie par deux joints (7) placés de chaque côté du clapet. The tightness of the system is guaranteed by two seals (7) placed on each side of the valve.

Claims (1)

REVENDICATIONS 1Procédé visant à mettre au point un carter d'admission par clapet1 Process for developing an intake valve housing permettant de remplacer le carter droit d'origine des moteurs de to replace the original right crankcase of the cyclomoteurs "deux temps" ,caractérisé par le fait que le carter est "two-stroke" mopeds, characterized in that the casing is remoulé et comprend une ouverture pour le passage des gaz, ouverture à la sortie de laquelle s'adapte un clapet sur lequel se fixe à l'aide de trois vis, une pipe d'admission. rewound and includes an opening for the passage of gases, opening at the outlet of which a valve fits on which is fixed with three screws, an intake pipe. 2  2
Figure img00020001
Figure img00020001
 selon la revendication 1, caractérisé par le fait que le nouveau carter permet d'adapter deux types de pipes d'admission permettant ainsi de monter tous les carburateurs à partir du diamètre 12 jusqu'au diamètre 21.  according to claim 1, characterized in that the new casing makes it possible to adapt two types of intake pipes thus making it possible to mount all the carburetors from diameter 12 to diameter 21.
FR8803641A 1988-03-09 1988-03-09 Replacement crankcase cover for moped engine - has adaptor for gas pipe with valve to improve engine performance Withdrawn FR2628483A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8803641A FR2628483A1 (en) 1988-03-09 1988-03-09 Replacement crankcase cover for moped engine - has adaptor for gas pipe with valve to improve engine performance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8803641A FR2628483A1 (en) 1988-03-09 1988-03-09 Replacement crankcase cover for moped engine - has adaptor for gas pipe with valve to improve engine performance

Publications (1)

Publication Number Publication Date
FR2628483A1 true FR2628483A1 (en) 1989-09-15

Family

ID=9364455

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8803641A Withdrawn FR2628483A1 (en) 1988-03-09 1988-03-09 Replacement crankcase cover for moped engine - has adaptor for gas pipe with valve to improve engine performance

Country Status (1)

Country Link
FR (1) FR2628483A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1544179A (en) * 1967-09-21 1968-10-31 Peugeot Cycles Advanced two-stroke engine
US3453994A (en) * 1966-07-11 1969-07-08 Tillotson Mfg Co Fuel feed system and charge forming apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3453994A (en) * 1966-07-11 1969-07-08 Tillotson Mfg Co Fuel feed system and charge forming apparatus
FR1544179A (en) * 1967-09-21 1968-10-31 Peugeot Cycles Advanced two-stroke engine

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