CS254928B1

CS254928B1 - Two-stroke engine with suction control

Info

Publication number: CS254928B1
Application number: CS86585A
Authority: CS
Inventors: Ladislav Repac
Original assignee: Ladislav Repac
Priority date: 1986-01-27
Filing date: 1986-01-27
Publication date: 1988-02-15
Also published as: CS58586A1

Abstract

Účelom riešenia je predížiť dobu otvorenia sacieho hrdla před hornou úvraťou s eielom zvýšenia výkonu motora. Účelu sa dosiahne tým, že oproti sacieho hrdla valca je na ojnici upravená klapka, oproti ktorej je v dolnej časti piesta vytvořený výřez.The purpose of the solution is to extend the opening time of the intake manifold before top dead center in order to increase engine power. The purpose is achieved by providing a flap on the connecting rod opposite the intake manifold of the cylinder, opposite which a cutout is made in the lower part of the piston.

Description

Vynález rieši dvojtaktný motor s reguláciou nasávania. } \The invention provides a two-stroke engine with suction control. }

Známe dvojtaktné motory sú konstruované tak, že na otváranie a zatváranie sacie ho hrdla sa využívá piesta motora. Doba otvorenia hrdla před hornou úvraťou je rovnaká s dobou jeho uzatvorenia po překonaní hornej úvratě. Aby nenastalo zpatné vyfukovanie zmesi do sacieho hrdla, toto musí byt umiestnené vyššie k hornej úvrati, čím sa skracuje doba sania zmesi. V iných známých dvojtaktných motoroch sa používá k regulácii sania rotačně šupátko, ktorým je možné predížit dobu sania zmesi před hornou úvraťou a skrátiť čas sania po hornei úvrati. Takéto konštrukcie sú však náročné na výrobu a vynaložené náklady sú neúměrné k dosahovaným výkonom motorov.Known two-stroke engines are designed so that the engine piston is used to open and close the suction nozzle. The opening time of the throat before the top dead center is the same as its closing time after overcoming the top dead center. In order not to reverse the blowing of the mixture into the suction nozzle, this must be located higher to the top dead center, thereby shortening the mixing time of the mixture. In other known two-stroke engines, a rotary slide is used to control the suction, by which the suction time of the mixture can be extended before the top dead center and the suction time is reduced after the top dead center. However, such structures are labor intensive and the costs involved are disproportionate to engine performance.

Uvedené nedostatky odstraňuje dvojtaktný motor s reguláciou nasávania pozostávajúci z valca, piesta, ojnice a kťukového hriadela podťa vynálezu, ktorého podstata spočívá v tom, že oproti sacieho hrdla valca, jeThe above drawbacks are eliminated by a two-stroke intake control motor consisting of a cylinder, a piston, a connecting rod and a crankshaft according to the invention.

Claims

OBJECT Two-stroke intake control motor, consisting of cylinder, piston, connecting rod and crankshaft, characterized in that a damper is provided opposite the connecting rod, against which a cutout is formed in the lower part of the piston. The advantages of the invention lie in the fact that the opening time of the suction head is extended before the top dead center and thus increases its performance. An example of an embodiment of a two stroke engine according to the invention is shown in the accompanying drawings, in which FIG.

2 shows a piston with a cut-out and a snap-fit, and FIG.

3 engine operating diagram. A cutout 3 is formed on the lower edge of the piston 1 against the intake port 2. A flap 5 is fixedly connected to the connecting rod 4, which moves along the indicated trajectory S. the flap 5 is lowered into the recess 3 at the same time, it approaches the wall of the cylinder 3 at the same time and closes the suction branch 2. In case of poor movement, the process is reversed. a damper (5j) is provided on the connecting rod (4) of the suction branch (2) of the cylinder (8), in which a cutout (3) is formed in the lower part of the piston (1).

FIG. 2

FIG. 3 Severografia, a. Plant 7, Most Price 2.40 KCs