DE2328076A1 - SAFETY DEVICE FOR THE CARBURETOR CONTROL - Google Patents

Description

PATENT LAWYERS 89Ή $ Aiiaiburs-Göqgingen, the OOOQ Π 7

von-Eidiendenf-Strab · 10 L · \ / * -V \> I ν

dr. ing. E. LIEBAU ■

-,. , -_ .., Our reference R 9132 / p

DIPL. ING. G. LI E BAU (please specify when replying)

Your sign

DIRECTOR NATIONALE DES USIlNiES RENAULT 8/10 Avenue Emile Zola
Billancourt (Seine) France

and

AUTOMOBILE PEUGEOT

75 avenue de la Grande Army

Paris, France

Safety device for the carburettor actuation

The invention relates to a safety device, which is in the acceleration position when blocked Carburetor actuation with the effect comes into action that the motor fed by the carburetor in the Idle condition returns or is completely turned off.

Known devices serving this purpose have a Detector device responsive to the pressure that

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is exerted on the accelerator pedal, and a device acting on the carburettor j which the engine speed reduces the idle speed as soon as the pressure disappears.

Such devices, which are switched between the accelerator pedal and the carburetor and with electrical or electromagnetic, hydraulic or pneumatic auxiliary equipment work, show the disadvantage that they trigger at an inopportune moment, especially when the accelerator pedal is suddenly released.

The invention has for its object to overcome this disadvantage by using a device that has a has two-armed rotary lever, the first arm of which is connected at its end to an operating cable which is in a Sleeve is displaceable, which has a fixed and a movable locking device, which is of an additional spring is pressed in the direction of the carburetor against a holding device, the effect of which is automatically activated by an auxiliary device which indicates a possible blockage of the lever while the pedal is no longer subjected to pressure is, with the operating cable now facing the throttle arm approaching the idle position below the common influence of a spiral spring and a main spring dreher can.

According to a preferred embodiment, the inventive Safety equipment characterized by the following points, among others:

- Your pressure detector has two contactors, a first contactor assigned to the accelerator pedal, which makes the circle under the action of a pressure exerted on the pedal

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counteracting feedback spring closes, a second contactor, which is rigidly connected to the first arm of a lever rotatably arranged at one point, the second arm of which is rigidly connected to the pedal, the second contactor making the circle under the influence of the opposite to that of the first lever arm action directed action of the return spring closes; the device for opening the throttle valve has an arm causing the rotation of the throttle valve which is under the opposing effects of a spiral spring and an operating cable which is attached to the free arm of the lever and which runs through a sleeve which has one end thereof a fixed stop and is attached at its other end to a movable stop which is connected to a lever which is urged towards the carburetor by a spring, the lever being hinged at one end at one point and at the other is locked to the end by the end of a lever _s -whose other end for rotation and unlocking of the lever can be brought by the movement of a plunger, which is controlled by the energization of an electromagnet;

- The feed circuit of the electromagnet, which can be closed by the joint action of the contactors, contains a delay element which has a delay effect in the order of magnitude of about 0.6 seconds.

According to another preferred embodiment, the inventive Safety equipment characterized by the following points, among others:

- Your pressure detector consists of a micro valve with a to the environment through a chamber which is open under the pedal and the microvalve is the opening

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a conduit opening into said chamber ₉ closes under the action of a pressure exerted on the pedal against the action of a return spring; its opening device for the throttle valve has a lever which is rotatable at one point and attached to the pedal at one point, ₅ the end of which is connected to an operating cable which runs through a cover ₉ which is equipped with a fixed and a movable stop _{9 of} the is rigidly connected to a lever ₃ which is rotatably arranged at one point and is tensioned at another point by a spring against the action of a rope, which is attached to the movable wall of a manometer capsule ₉ whose fixed wall has a passage; line leads ₉ which in turn in a further line and in the connected to the engine intake manifold line _s opens wherein the operation cable with the arm connected _s is the throttle valve of the carburetor seeks to rotate in the idle position under the action of a coil spring and a main spring | - At the outlet of the suction pipe a line is attached ₉ in which a nozzle and a check valve are arranged one behind the other.

The invention is explained below through the description of two exemplary embodiments and with reference to the drawings 9 which represent the following?

Figure 1 is a Steuerkrsis _e ", which connects the accelerator pedal with the carburettor and a cable locking device ₉ includes the" under the influence of an electromagnet steht5

2 shows a similar circle to that of the rope lock is under the influence of a manometer capsule "

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In the embodiment of Figure _e 1 the shell is fastened I ₈ in which the rope 2 can be moved ₃ in the region of the gasifier 3 at a first fixed plate k ^ which is rigidly connected to an arm 5 _s may be the be pivoted about a pin 6 _e the cover 1 is also secured to a second fixed lock 7, the befindete in the region of the accelerator pedal 8, the cable 2 is fixed to the end 9 of one arm of the lever 10 _s which is pivotable about 11 «the hinged at 12 accelerator pedal 8 has at its lower part a contactor 13 with button 13a5 the root surface 14 of the contactor 13 is pressed by a spring 15 against two points of contact 16 and an electrical lead wire 18 _s of führt.Die to a solenoid 19 base surface 21 of the push button 20a of the upper portion of the lever 10 rigidly connected contactor 20 is pressed by a spring 22 against the contact points 23 and 24- The lever 5 is in the direction of the carburetor 3 by egg ne "auxiliary or auxiliary spring 25 pulled, and its end 26 can be held by the end 27 of the lever arm 28, which is rotatably mounted at 28a, and can rotate under the influence of the plunger 30» The electrical line feeds the electromagnet 19 ₉ an armature 19a rigidly connected to the plunger 30 moves in the air gap. The (not shown) throttle valve of the carburetor is controlled by an arm 31, a coil spring ₉ to 32 and a main spring 33 to rotate clockwise looking in the closed position. The rope 2 is attached to the end of the arm 31. A delay element 35 is switched on in the line 18 before it enters the electromagnet 19.

In this first embodiment, the fuse exists in that the movable support point or locking device M-

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the casing 1 is released in such a manner ₅ that the part group sleeve rope 1, is drawn 2 of the main spring 33 and the self-attached to the supporting point the auxiliary spring 25 to the left (in the case of clamping of the cable 2 in its shell 1 or a clamping 'of the rotary movement of the pedal) "This left shift of the subassembly shell rope is so far _s that the throttle valve of the carburetor passes to the idle position"

The weak spiral spring 32 arranged on the actuation axis of the carburetor throttle valve is sufficient to To return the throttle valve to the closed position or the idle position if the rope 2 or the main spring 33 should tear »

Evidence of the operational irregularities is provided by the accelerator pedal 8, which is provided with its contactor 13, the contact of which is interrupted as soon as the foot is on presses the pedal.

The contactor 20 is an end contact, contact, which prevents any intervention of the safety device when the engine is idling and the accelerator pedal 8 is not actuated «

The safety device described works as follows:

During normal operation, the contactor 13 is kept open because of the pressure exerted on the pedal 8 by the foot; the safety device is therefore not activated.

If the rope 2 breaks or the main spring .33 breaks, the

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Rope 2 is _s jammed in its case 1, the axis 11 of the pedal 8, or any transmission element clamped _s a pedal 8 is no longer retrieved If you won the foot lifts off the pedal 8 _s represents * over the contactor 13! Η- *, IS ₉ 17 the connection herj the current flows through the now closed contacts 21 _S 23 ₉ 2k of the "end contact 20 and excites the electromagnet 19"

The solenoid plunger 19a can through the mediation of the ram the toggle 28 tilt ₀ unlocks the arm 5 | this is guided back to the left nan ^ on the auxiliary spring 25 with or without help from the main spring 3 3 together with the shell 1 / cable 2 component group, whereby the throttle valve of the carburetor is under the influence of the spiral spring 32 (with or without the help of the main spring 33) can be closed ο

If the foot is not resting on the pedal 8 when idling, ₈ is that? Contactor 13 closed ₉ but the end contact 20 is open (as shown in FIG. 1) and the safety device cannot be triggered ₀

The relay 35 causes a delay of approximately O ₉ S secg camouflages unintentional _ΰ to avoid triggering processes which can be traced back to the sudden release of the gas pedal

After a "release" rested by a magnetic element with a plunger armature, the device must be reset the.

The Haiaptfeder 33 ranges from ₂ to the return of the accelerator pedal 8 herbeizuführan _B by the rope 2 is moved in its case 1 wird5 this is it is the üb = Liehe actuating device for a carburetor _o

If the auxiliary spring 25 is broken, the main spring 3 3 is sufficient to complete the entire arrangement (lever 5 and actuating arm 31 for the throttle valve of the carburetor).

The coil spring 32 is sufficient to return the throttle valve 3 2 of the carburetor to an idle position when the device responds because of breakage of the main spring 3 3; the spiral spring 32 is not sufficient to return the pedal 8, by pulling the rope 2 through the sheath 1, but when the component group rope-sheath is released, the spring is sufficient to return the carburetor throttle to the idle position.

In the embodiment shown in FIG. 2, the components already drawn in FIG. 1 have the earlier ones again Reference signs received.

The lever 5 is connected at 36 via a cable 3 7 to the movable wall 38 of a manometer capsule 3 9, the fixed wall 40 has a passage 41 into the a line 42 opens which is connected to the intake manifold 44 of the engine leads. The line 42 is connected to a line 4 3 which leads into the intake pipe 44 of the engine and in which a check valve 45 and a nozzle 4 6 are switched on. The line 42 is on the other hand to a Line 47 connected to the 'chamber 48 of a microvalve 130 opens with flap 140, the actuating tappet 130a of which opens flap 140 under the influence of pedal 8 seeks to press on its seat 50, whereby the connection with the chamber 48 with the ambient air (air line 51) is closed. The negative pressure generated in this way in the capsule 3 9 holds the lever 5 firmly on his Stop 5a firmly.

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When the driver releases the accelerator pedal 8, the flap 140 is lifted from its seat 50 by the spring 15 and opens the line 47, which is connected to the air supply line 51 in this way. If the lever 10 for any Basically no longer returns to its rest position and the rope 2 remains taut for this reason, does the Connection of the manometer capsule 39 with the outside air Displacement of the lever 5 by the auxiliary sfeder 25 possible; as a result, the stop 4 and the cable 2 move in the direction of the carburetor 3, whereby the throttle valve under the. Influence of the spiral spring 32 and the main spring 33 is returned to the idle position.

In normal operation, the lever 10 reverses when the driver the pedal 8 releases, returns to its rest position and does not hold the rope 2 back; the throttle valve can therefore turn back to idle.

When the driver presses the pedal 8 down, the cable 2 opens the throttle valve and the microvalve 130 is closed and because of the suction effect of the suction tube 44, a negative pressure arises in the capsule 39, the volume of which decreases and which pulls the lever 5 to itself. The safety device is to intervene to the same extent as before ready, that is, in the event that the cable 2 remains blocked when the pedal 8 is released.

A throttle or nozzle 46 limits the flow of air when the flap 140 leading to the ambient air is open. A tight check valve 45 allows it in the capsule Maintain a sufficient negative pressure, for example, during a trip on a car road.

The time lag is due naturally

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reaches the pressure drop in the lines.

This setup is less expensive than the previous one and does not require redistribution.

Patent claims :

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Claims (2)

Claim e 1./safety device for the carburetor operation, ■ 'with a detector for the pressure exerted on the accelerator pedal and a device for actuating the Carburetor throttle valve, characterized in that a rotatably arranged two-armed lever (10) is provided, the first arm of which is connected with its end (9) to an actuating cable (2) which is displaceable in a sheath (1) which has a fixed locking device (7) and • moving clamp (Ό which is pressed by a supplementary spring (25) in the direction of the carburetor (3) against a holding device, whose effect is automatically removed by an auxiliary device ₉ a possible blocking of the _v lever (10) indicates, while the pedal (8) is no longer subjected to pressure, the movable stop (H) now approaches the throttle valve arm (31), which in the idle position under the joint influence of a spiral spring (32) 'and a main spring (33) can turn. 2. Safety device according to claim 1, characterized in that that its pressure detector comprises two contactors, namely a first one associated with the accelerator pedal (8) Contactor (13) that moves the circle under the action of a pressure exerted on the pedal 309850/1008 _ ₁₂ _ 2328078 acting return spring (15) includes a second contactor (20), which with the first arm of a at a point (11) rotatably arranged lever (10) is rigidly connected, the second arm of which is connected to the pedal (8) is rigidly connected, the second contactor (20) the circle under the influence of against that of the first lever arm exerted action directed action of the return spring (22) closes that the device has an arm (31) which causes the throttle valve to rotate for opening the throttle valve, which is under the opposing effects of a spiral spring (3 2) and an operating cable (2), the is attached to the free end (9) of the lever (10) and which runs through a sheath (1) that with its one End attached to a fixed stop (7) and at its other end to a movable stop (4) which is connected to a lever (5) which is pressed by a spring (25) towards the carburetor is, wherein the lever (5) is articulated with its one end at a point (6) and at its other End (26) can be locked by the end (27) of a lever (28), the other end (29) of which can be rotated and Unlock the lever (5) by moving a tappet (30) can be brought, which can be controlled by the excitation of an electromagnet (19). Safety device according to Claim 2, characterized in that the feed circuit of the electromagnet (19), which can be closed by the joint action of the contactors (13, 20), a delay element (35) contains, which has a delay effect in the order of about 0.6 seconds. 309850/1008 4 »Safety device according to claim 1, characterized in that that you pressure detector from a microvalve (130) with one to the environment through one below the pedal (8) arranged line (51) open chamber (48) consists, wherein the microvalve (130) the opening a conduit (47) opening into said chamber closes under the action of a pressure acting on the Pedal (8) against the action of a return spring (15) is exercised, and that its opening device for the throttle valve one at a point (11) rotatable, arranged and at a point (12) on the pedal (8) has attached lever (10), the end (9) of which is connected to an operating cable (2) which is passed through a shell (1) runs, which is equipped with a fixed stop (7) and a movable stop (4) which is rigidly connected to a lever (5) which is rotatably arranged at a point (6) and is tensioned at another point (36) by a spring (25) against the action of a rope (37) attached to the movable wall (38) attached to a manometer capsule (39) is, the fixed wall (.40) has a passage (41) which leads into a line (42) which in turn into another. Line (47) and opens into the line (43) connected to the engine intake pipe (44), the operating cable (2) being connected at (34) to the arm (31) which is the throttle valve of the carburetor tries to rotate into the idle position under the action of the spiral spring (32) and the main spring (33). 5 _# safety device according to claim 4, characterized 309850/1008 shows that at the outlet of the suction pipe (4-4 ·) the Line (43) arranged one behind the other has a nozzle (46) and a check valve (45). 309850/1008 Blank page