FR2484534A1 - IMPROVED INTERNAL COMBUSTION ENGINE - Google Patents

Abstract

THIS DEVICE INCLUDES A BODY 10 PROVIDED AT THE INLET PORT IN THE COMBUSTION CHAMBER AND INCLUDES TWO GROUPS OF GUIDING FINS FOR THE AIR-FUEL MIXTURE. EACH GROUP OF FINS INCLUDES GUIDING FINS B, C AND B, C RESPECTIVELY PRODUCING VIRBLES IN REVERSE DIRECTION.

Description

The present invention relates to combustion engines

  internal and it relates more particularly to a mo-

gasoline engine, in particular an engine of the type comprising an intake orifice adapted to generate twin vortices in the air-fuel mixture in order to allow

  to obtain a higher output power and a higher torque

ves. It is well known that a petrol engine which is suitable

  to generate appropriately in the combustion chamber

tion a vortex of the air and fuel mixture is

able to provide increased performance in both power and

couple. If a vortex is generated in the mixture

  plex, the engine efficiency is further increased. It is cons

  naked that an inlet can only generate a vortex

  lon unique and that it is impossible to generate a vortex

  multiple unless the engine has multiple ori-

  admission fees. Consequently, for a combustion engine

  internal four-stroke type, this makes the construction

more complicated and consequently increases the costs of

manufacturing.

  The object of the invention is to make it possible to generate twin eddies in the intake air-fuel mixture of an internal combustion engine by means of a single intake orifice, and consequently to increase the efficiency of this

engine.

  The characteristics and advantages of the invention appear

  will reiterate during the description which follows made in

  referring to the attached drawing given only by way of example

  ple and in which - FIG. 1 is a schematic perspective view of the upper part of a cylinder of an internal combustion engine to which the invention is applied;

- Fig. 2 is a top view of the bedroom

bustion of a motor to which the invention is applied; - Fig. 3 is a sectional view along line 3-3

of Fig. 2.

Fig. 1 shows a configuration of the following device

before the invention applied to a gasoline engine of the type

four stroke. Piston 2 moves in the chamber

  bust 4 delimited by the cylinder 1 and by the cylinder head 3. The intake duct and the intake orifice are formed in the cylinder head 3 which comprises the exhaust orifice 6, the

  intake valve 7, exhaust valve 8 and valve

  ignition spark 9. The reference 5 'designates 1'

opening of the intake duct 5 in the combustion chamber

  tion 4. The device according to the invention designated by the re-

  ference 10 is mounted in this opening.

  The vortex generator device 10 may have come integrally with the intake duct 5 or it may be formed by a method of stamping a piece of

metal. This means that the guide fins 11 are formed

  mées on the crown of the whirlpool generator device 10

lons. These guide vanes can be split in two

groups which guide and ensure the flow of the air-

fuel in two opposite directions as shown in FIG. 1. The guide fins 11 form two groups A and A2. Each group of guide fins consists of

  of five fins 11 at the limit of which is the central axis

intake port tral. Each of the groups A1 and A2 of guide fins 11 comprises two groups B1, C1 and B2

  and C2 of opposite direction guide fins.

We will now describe the combustion process in a gasoline engine as described above. At each race

intake during the downward movement of the piston 2, a

  lange of air and fuel enters the combustion chamber

  bustion. At this instant the device 10 generating the tour-

ridges which is fixed in the inlet duct 5 product

  by means of its guide vanes 11 of the vortices

  cutives in the air and fuel mixture. Each group

  eg A1, A2 includes guide vanes B1 and B2 which

  each terminate a fuel stream as shown

  ted by arrows SB1 and SB2 respectively, these currents

flowing from the inlet pipe and the inlet

  mission along the cylinder wall by turning in the opposite direction, and the guide fins C1 and C2 produce

currents SC1 and SC2 which combine with the above currents

tees SB and SB respectively so that each group

  pe of guide fins 11 generates currents SB1, SC and SB2, SC2 which form two vortices in the cylinder

  combined SA1 and SA2 respectively rotating in opposite directions.

  At the end of the compression stroke, the piston 2 compresses

the air and fuel mixture, and the spark plug 9

  ge ignites the air and fuel mixture and burns it

  by converting it into energy and repelling the pis-

your. Although the description of the invention is made

with reference to a gasoline engine, the same principle of in-

  vention can be applied to any piston engine

  reciprocating and all rotary motors.

  The engine according to the invention as described above has an intake port which generates two currents

  whirlpools. This engine is simple and assu

re the best combustion efficiency.

Claims (2)

RESELL I CAT IONS   1 - Internal combustion engine characterized in that it has an intake port adapted to generate each   that intake stroke in the air and fuel mixture   ble two vortices SA1, SA2 rotating in opposite directions so that said mixture is switched on at the end or when   sinage of the end of the compression stroke.   2 - Device intended to be mounted at the intake orifice   mission of an internal combustion engine, characterized in   that it comprises a member 10 adapted to generate a vortex-   lon multiple in order to modify the flow of the mixture of ad- mission, this device comprising two groups of fins   xes BV, C1 and B2, C2 and arranged so as to generate two swirls rotating in opposite directions.