DE102007053211A1 - Throttle set for reducing speed and/or performance of e.g. motorcycle or scooter, has throttle valve stop mountable in area of internal combustion engine, and throttle valve limiting opening of valve stop such that opening is opened - Google Patents

Abstract

The set has an intake screen (44) mountable in an intake channel (14) e.g. intake manifold, of an internal combustion engine (10) e.g. two-stroke engine. The intake screen reduces a cross section of the intake channel. A throttle valve stop is mountable in an area of the engine. A throttle valve (16) limits an opening of the valve stop such that the opening is partially opened. The intake screen is formed in such a manner that the intake screen is inserted between a flange surface of an engine mount e.g. crank case, and a connecting flange of the intake channel.

Description

The The present invention relates to a throttle set for reduction the speed and / or performance of an engine and a transmission driven motorcycle. The present invention further relates to a motorcycle with such a throttle set.

Of the Powertrain of a motorcycle (especially a motorcycle or Scooter) generally includes an internal combustion engine, which transmits its power via a gearbox to the drive wheel. As an internal combustion engine is used especially in mopeds a two-stroke engine. As a rule, in the drive train is a clutch inserted, through which the power flow can be interrupted, so that the engine continues to run even when the motorcycle is stationary can.

the Combustion chamber of the internal combustion engine will be one of the desired Performance corresponding fuel / air mixture supplied. For this purpose, the fuel is atomized and with a precise coordinated amount of ambient air mixed around an optimally ignitable To obtain mixture. The fuel / air mixture becomes common prepared in a carburetor and a suction via the Internal combustion engine supplied. The from the combustion engine sucked mixture amount and thus its performance will be among others regulated by the cross section in the intake passage.

When Carburetors are suitable, for example, constant pressure carburetor (vacuum carburetor) where the throttle position is not directly influenced by the driver becomes. Rather, the driver operates on a Throttle and a cable throttle a throttle, by their position the pressure prevailing in the intake duct is influenced. Becomes throttle open (speed increase), Thus, the increase in air causes an increase in the Flow rate. As a result, the negative pressure decreases below a throttle valve. This negative pressure influences over a bore and a vacuum chamber the position of the throttle valve, in which this is raised. With the throttle valve is a fuel nozzle needle connected when lifting the throttle valve, the passage opening the fuel nozzle increases. At the constant pressure carburetor the throttle valve position is determined exclusively by the negative pressure in the Intake channel and thus the load condition and the speed of the engine certainly. In a two-stroke engine, the fuel / air mixture at an upward movement of the piston of the two-stroke engine from Carburettor from via a suction channel through the bottom of the piston sucked into the crankcase and in the subsequent Downward movement of the piston precompressed. At further Upward movement of the piston passes the precompressed Mixture over overflow slots in the Combustion chamber.

Instead of the described two-stroke principle with carburetor, the fuel / air mixture can also be injected directly into the combustion chamber. In the intake manifold injection is located in the intake manifold, is sucked through the combustion air, a fuel injection valve. In the intake manifold an ignitable mixture is generated, which is introduced at a given time in the combustion chamber. An improvement in engine performance and exhaust gas properties can be achieved by direct injection. In this case, first of all fuel is sprayed into a chamber which contains compressed air, so that a highly enriched mixture is produced. The small compressed air / fuel package is then injected near the spark plug into the cylinder of the internal combustion engine, where it strikes with the intake fresh air (stratified charge). This always produces an ignitable mixture at the spark plug, in the combustion chamber a wide variety of mixing ratios can be set in order to ensure the desired power output. The injection of fuel into an internal combustion engine has been described, for example, in US Pat DE 34 90 359 T1 and the DE 37 32 259 C2 described. There are other possibilities of injection in the two-stroke, z. B. in the crankcase, in an overflow.

In both carburetor and injection systems, the speed and power output of the engine can be varied by the amount of intake airflow. For this purpose, a throttle valve arranged in the intake passage is adjusted. Depending on the air flow, the amount of fuel used adjusts. When the throttle is fully open, the power output is greatest. The adjustment of the throttle opening can be made directly by the operator, in which this adjusts the throttle valve via a throttle grip and a cable. However, it is also possible for the operator to specify a speed setpoint that is processed by an electronic controller together with different engine operating parameters to determine a setpoint for the throttle position ( DE 10 2006 044 290 A1 . DE 693 18 012 T2 . DE 101 23 609 A1 ).

In many cases, the throttle position is detected by a sensor, for example by a potentiometer. The sensed measured value, along with other vehicle data and measurements, such as vehicle speed, engine speed, and mass air flow sensor reading, is supplied to a vehicle or engine controller that outputs appropriate control signals to a carburetor or injection system for the required air / force to adjust the substance mixture ( DE 10 2006 044 290 A1 ).

The Transmission of a motorcycle, especially a moped (moped or scooter) often contains a stepless adjustable belt drive consisting of a drive shaft and a parallel thereto arranged output shafts exist. On the waves are two conical Slices. A conical disk (fixed disk) is in each case firm with the Shaft connected while the other cone pulley (travel disc) axially displaceable on the associated shaft, however can also transmit torsional moments to the shaft. The conical disks are replaced by a transmission element of constant length, usually a V-belt is. The V-belt runs in the V-shaped Gap between the conical disks and transmits the drive torque only by traction. The translation is in this transmission design by changing the axial distance of the conical disks varies, which is responsible for the transmission element on both conical disk pairs set new contact radii. This leads to the conversion of Input speed and torque.

In mopeds, a so-called variator is often used as a continuously variable belt or V-belt transmission ( DE 601 27 769 T2 . DE 10 2006 026 951 A1 ). The drive shaft of the variator is connected to the crankshaft of the internal combustion engine. On the drive shaft, a sliding sleeve is arranged, which receives an axially displaceable Wegkegelscheibe. The Wegkegelscheibe forms a housing for centrifugal weights, which is covered by a counter-plate (control plate) with guide slot. In the starting position, the V-belt runs on a small contact radius, and the Wegkegelscheibe has a maximum distance to the slotted disk. As the speed increases, the centrifugal weights are forced outwards due to the centrifugal force, whereby an axial force is exerted on the Wegkegelscheibe in the direction of the conical disk. The distance between the conical discs decreases and the V-belt is forced to a larger contact radius. Since the V-belt has a constant length, it presses with increasing speed with increasing force between the conical disk of the output shaft and presses their Wegkegelscheibe against the force of a compression spring axially away from the slotted disk. The output shaft usually contains a centrifugal clutch that closes when a certain speed is exceeded. The output shaft may form the input shaft of a final gear which is formed as a gear reduction gear and drives the drive wheel of the motorcycle.

Who drives on public roads with a motorcycle, usually requires a driver's license. The legal provisions for this may vary from country to country. The driving license regulation in Germany provides for example, that for driving a moped with a maximum speed determined by the design of not more than 45 km / h and an internal combustion engine with a capacity of not more than 50 cm ³ (moped or scooter) a Driving license of the class M is required. An exception to the license requirement is if the motorcycle in its design guarantees that the maximum speed on a flat track does not exceed 25 km / h (eg moped). To run such a moped, instead of a regular driver's license, only a moped examination certificate may be required, to which requirements are considerably lower than for a regular driver's license. A moped exam also entitles young people, who are at least 15 years old, to drive a moped.

It Only a few types of mopeds are made, which are the general ones Wishes of customers for a fully equipped Motorcycle suffice. Therefore mopeds are often converted, around the restrictions required for a moped to meet and in particular the maximum speed accordingly to limit the respective legal provisions. In the conversion It should be noted that a subsequent change by the user, by which the speed limit is canceled, is not possible. Otherwise the vehicle does not receive the required approval from the competent authority.

In front Everything is to ensure that after a conversion the legal permissible exhaust limits and maximum Noise levels are not exceeded For example, in the EC Directives 97/24 / EC Ch. 9 (noise maximum 66 dB (A)) and 97/24 / EC Chap. 5 (the maximum permissible Exhaust limits are for CO: 1 g / km and for HC + NOx: 1.2 g / km).

In order to reduce the maximum speed of a moped (eg, moped) to not more than 25 km / h, an intervention in an electric vehicle or engine control device, if present, can be made. For example, in the DE 103 30 980 A1 described that in a motor vehicle having an electronic engine control unit, the engine power can be changed by so-called chip tuning. For this purpose, a chip in the electric motor control device can be exchanged for another chip with another control program and / or other operating parameters. Alternatively, in the engine control unit another Steuerpro program or an existing control program with changed operating parameters are stored. It is also possible to provide an additional electrical control unit which modifies the measured value of the throttle angle and pre-mirrors the vehicle or engine control device with a different throttle angle.

The Changes to the electronic control device are often difficult to perform, especially if the retailer, a conversion of a Mopeds in a moped wants to do (reducing the maximum speed), not over the necessary aids and the technical description of the Control device has. Some manufacturers of motorcycles Although provide tools and instructions for manipulation of the control device ready, but even in these cases it often requires from specialist dealer special electronic knowledge to the necessary adjustment. The manipulation the control device is also increased with Costs connected.

Of the present invention is based on the object, a throttle set to reduce the speed and / or performance of a by a combustion engine and a transmission driven motorcycle to provide, through which a cost-effective Adjustment of the maximum speed of the motorcycle allows is required without any intervention in an electronic control system is. An additional electrical control unit for Modification of the throttle position signal should be dispensable be. Furthermore, it is an object of the invention with a motorcycle to provide a corresponding throttle set.

The The object is achieved by a throttle set to reduce the speed and / or performance of a by a combustion engine and a transmission driven motorcycle and by a motorcycle according to the teachings of Claims 1 or 17 solved.

Of the Throttle set according to the invention has a in the Intake duct of the internal combustion engine can be installed intake aperture, which reduces the cross section of the intake passage. An intake channel in the sense of the present invention is a channel through which either an air / fuel mixture (eg when using a carburetor) or only air (air intake duct, eg when using a Injection system) is supplied to the internal combustion engine. about If necessary, the air intake duct may also contain some lubricating oil be supplied to the engine. Furthermore, a throttle valve stop is provided, which is mountable in the area of the internal combustion engine and the opening the throttle limited, so that these are not maximum, but only partially open.

The Intake hood is intended for this purpose in the intake of a commercially available trained motorcycle internal combustion engine to be used. she is formed such that it has a smaller passage cross-section has as the passage cross-section of the intake passage. The intake panel reduces the passage cross section, so that the mixture or Air supply to the engine is restricted. This leads to a reduction in engine performance in particular in the upper speed range and to a reduction of the maximum Engine speed, which is a reduction of the maximum possible Vehicle speed has the consequence. The intake is on adapted to the respective engine or vehicle type. Your interpretation can be determined by experiments by intake with different Passageways experimentally installed in the intake passage become.

The Intake diaphragm is preferably disc-shaped. You can, for example, by punching or lasers from a sheet getting produced. It is therefore a simple, inexpensive producible element.

in principle can be the intake panel in each area of the intake Attach. However, it is advantageous for the installation of a existing flange surface in the area of the intake duct to choose. It is particularly useful the intake panel between a flange surface of the engine block (Crankcase, cylinder, cylinder head) and one at this Flange surface mounted connection flange of the intake duct (For example, intake manifold) use. Dependent on from the use of a carburetor or an injection system a connecting flange on the crankcase or on the cylinder head be used of the internal combustion engine. The intake is on adjusted their installation location.

she has, for example, an opening and holes, which correspond to the flange holes. For inserting the intake panel the connection flange of the intake duct is detached from the engine block, inserted the intake and the connecting flange again connected to the engine block. The assembly is very easy perform.

When registering a motorcycle whose maximum speed has been reduced to meet the requirements of a moped, the registration authorities usually require that the action taken by the vehicle owner can not be reversed. This requirement is the subject of an anti-manipulation catalog, as described, for example, in the EC Directive 97/24 / EC Chap. 7 is given. The legal provision dictates that technical changes On motor vehicles, which lead to a change in the speed determined by the type, must be made much more difficult. To meet these requirements, it is of particular advantage to provide attachment means for the intake diaphragm, which form a permanent connection of the intake diaphragm in the intake passage. In an advantageous manner, unsolvable screws, in particular tear-off screws, can be used for fastening the flange connection. In the case of tear-off screws, the region of the screw on which the tool engages for screwing travels when a certain torque is exceeded, so that further actuation of the screw, in particular unscrewing of the screw, is no longer possible.

The Intake diaphragm preferably has at least one passage opening on, which is dimensioned such that the passage of air reduces and thereby limits the engine speed to a predetermined value becomes. This causes the intake diaphragm basically a Reduction of engine power. In the upper load range leads this is due to the fact that the maximum possible speed of the internal combustion engine a predeterminable value of the passage opening of the Aperture depends, is limited.

The Ansaugblende can have one or more openings exhibit. The cross section of the passage opening (s) can basically be of any shape. Usually will the intake diaphragm a central circular passage opening exhibit. The size of the passage opening (s) can be determined by experiments. It is set in such a way that a certain maximum engine speed not exceeded becomes.

It has proven to be advantageous if the intake panel at least has a passage opening which is the cross section of the Intake duct is reduced by 30% to 70%, in particular by 40% to 60%, d. H. it is only 30% to 70% or 40% to 60% of the original Cross section for the passage of air available.

The mentioned throttle may be part of a carburettor be. However, it can also be used as an independent component in be arranged in the intake passage, which is usually the case is when using an injection system instead of a carburetor becomes. The extent of throttle opening in Relation to the suction surface gives the mixture concentration in front. For example, the value of the throttle opening angle becomes determined by a potentiometer and for electrical adjustment the amount of fuel injection. By the operation the throttle is the speed of the engine and its Performance influenced. It was in a surprising way found that by limiting the opening angle the throttle in the sense that the throttle no longer completely open, including the exhaust gas and noise behavior. in this connection It has been shown that by limiting the maximum throttle opening position targeted the harmful exhaust and noise emissions can be reduced. In conjunction with a built-in Intake hood, it is possible by selecting a specific maximum opening angle adjust the exhaust and noise behavior so that the legal requirements can be met.

Of the Throttle valve stop preferably consists of a stable, fixed mountable sheet having a protruding nose. The throttle stopper is designed to be in the engine area is mountable so that his nose in the trajectory of a Throttle lever mounted on the throttle shaft, boss, Cam or the like engages, so that the throttle only partially open.

A further inventive design of the throttle stop is to see that it contains a rotary socket. The Rotary sleeve is mountable in the area of the throttle with a Projection cooperate and the opening angle of the throttle to limit. If the maximum possible opening angle the throttle is reached, jack and jog Projection against each other and prevent further opening movement the throttle. For mounting the rotary bushing and the There are two alternatives available. Either the projection is formed stationary and the rotary socket is by a Actuator for the throttle, for example a cable, moves or the rotary sleeve is mounted stationary and the projection is moved with the actuator. By selecting the diameter of the rotary socket is the relative Position between rotary sleeve and projection set at the both collide. As a result, can be through this selection of the maximum possible opening angle to adjust.

The appropriate dimensions of the protruding nose or sleeve are adapted to the particular type of engine or vehicle. They can be determined by tests that are carried out on a test bench, for example, by installing different throttle stops on a trial basis. Preferably, the throttle valve stop is dimensioned such that it limits the opening travel of the throttle valve to 30% to 70%, in particular to 40% to 60%. This means that the throttle valve can be less widely opened compared to the state without throttle stop. As opening in the sense of the present invention comes into consideration the adjustment away a throttle-actuating element (cable), the swept when opening the throttle flap adjustment or even the change in the passage cross section when opening the throttle.

Provided a cable provided for operating the throttle is, it is of particular advantage, the throttle valve stop such form that he in the field of attachment of the cable outer shell fastened, in particular screwed.

A Particularly advantageous embodiment of the invention provides that the throttle set contains at least one mechanical component, which is intended to the maximum possible gear ratio of the gearbox and limit it to a predefinable value.

By the limitation of the transmission ratio leaves the maximum with simple, inexpensive means minimize possible vehicle speed. This measure advantageously supports the mode of operation of the intake panel, which a reduction of engine power, especially in the upper Speed range and a reduction in the maximum engine speed causes. Through a coordinated design of the intake panel and the limitation of the translation ratio You can select suction cups with optimal behavior become. For example, if an intake panel with too small air passage cross-section chosen, the mileage may drop too much, causing the acceleration of the motorcycle even at lower speeds is lowered too much. Is, however, the air passage cross section The intake diaphragm is too large, so can the limitation of the gear ratio the Rated speed of the engine are exceeded.

at Mopeds that can be retooled at speeds of a maximum of 25 km / h, the gearbox often contains a variator with a drive shaft, are arranged on the conical disks. An advantageous embodiment of the invention provides this that the throttle set contains at least one Axialwegbegrenzer, which is designed to be the mutual approach limited arranged on the drive shaft conical disks. It This is not possible that the V-belt originally reached the maximum contact radius. This leads to a limitation of the gear ratio the variator.

additional or alternatively, it is also advantageous if the throttle set at least one Axialwegbegrenzer for the output shaft a variator designed such that he arranged the movement apart on the output shaft Cone disks limited. This Axialwegbegrenzer prevents the V-belt reaches its design contact smallest contact radius, which also to a limitation of the translation ratio the variomatics leads.

Preferably the Axialwegbegrenzer is in the form of a sleeve. The bush can be made of a tubular cylindrical Component exist. However, there are also other forms of cans into consideration, for example, those with a covenant. The rifle can easily on the drive shaft between the conical disks or on the output shaft outside the conical disks to be assembled. The rifle can be with simple Produce and install means at low cost.

The Length of the sleeve is dimensioned such that a specifiable, reduced vehicle speed is not exceeded can be. It is adapted to the respective gearbox or vehicle type.

alternative or in addition to the trained as a rifle Axialwegbegrenzer provides an advantageous embodiment of the invention before, that the throttling set a lid-shaped acting as Axialwegbegrenzer Component contains. This component is on the Wegkegelscheibe attachable to a variomatic. The component is preferably annular formed and has a radially inwardly projecting collar on. The collar is designed so that when it reaches a predeterminable axial strokes of the Wegkegelscheibe against a fixed Counter plate of the variator abuts. Preferably can the cover-shaped component in a conventional Variators are used, which consists essentially of a housing-shaped Wegkegelscheibe and a counter-plate, between which centrifugal weights angeord net are. On the housing-shaped Path cone is usually one as annular Component formed lid mounted. This lid can be simple, cost-effective manner by a modified cover-shaped component be replaced with the features of the invention.

In order to comply with the anti-tampering catalog, the throttle valve limiting the throttle opening limit in the engine must be fixed in such a way that it can not be removed or changed by the vehicle owner or the removal or modification is much more difficult. The same applies to the installation of the mechanical component, which limits the transmission ratio of the transmission to a predetermined value, as well as for the installation of the intake panel. A preferred embodiment of the invention provides that the throttle set an adhesive, in particular a Ge Windeklebstoff, which ensures the tamper-resistant attachment of the throttle stop and / or the mechanical component and / or the intake panel. After the final design of the corresponding components of the throttle set has been determined by experiments, they are installed at the intended location, for example, for fastening screws or nuts are used, which are tightened using the adhesive. After curing of the adhesive so indissoluble compounds that make disassembly or removal of the corresponding components of the throttle set impossible or at least considerably more difficult.

Of the Throttle set consists of components that are retrofitted in the Range of the internal combustion engine mounted in a simple manner or can be installed. The components are easy on Way the respective vehicle type whose Geschwin speed limited should be, adapt. Your particular design may be simple Way done by experiment. The use of an additional electrical control unit, which z. B. the measured value of the throttle angle and the vehicle or engine control unit a different throttle angle vorspiegelt is not required.

One Another aspect of the present invention is a motorcycle, in particular a moped whose maximum speed is reduced to 25 km / h is (moped), which is an internal combustion engine, especially one Two-stroke gasoline engine, and having a transmission. The invention Motorcycle includes a device according to the invention Throttle set as described above.

According to one preferred embodiment of the invention includes the internal combustion engine of the motorcycle an intake passage in which an air intake is arranged, which reduces the cross section of the intake passage.

It is appropriate, the air intake between a Flange surface of the engine block (crankcase, Cylinder housing, cylinder head housing) and a mounted on this flange surface connecting flange of Insert intake manifold (intake manifold). These Training only requires that to reduce vehicle speed and the engine power of a moped the flange connection dissolved and the air intake is used.

Around take into account the Anti-Tampering Catalog, it is an advantage the connecting flange, which encloses the air intake panel, on the engine block by means of unsolvable screws, in particular by means of tear-off screws.

A preferred development of the invention provides that in the intake the internal combustion engine, a throttle valve is provided and that a Throttle stop limits the opening of the throttle, so that the throttle only partially opens. As already stated, can be defined by the limitation the maximum throttle opening position targeted the reduce harmful exhaust and noise emissions.

According to one inventive design are in the field the throttle valve is provided with a throttle stop and a projection which to move relative to each other when the throttle valve moves. The dimensions of the throttle stop and the projection and their relative position to each other are chosen so that the throttle valve stop and the projection interact and the opening angle Limit the throttle valve to a predetermined value. This embodiment is easy and inexpensive to produce. she allows easy adjustment and subsequent change the maximum possible opening angle of the throttle valve, by only the throttle stop and / or the projection be replaced by those of other dimensions.

A very simple and inexpensive to produce Training the throttle stop can be characterized achieve that the throttle valve stop from a fixed mounted, stable sheet with a protruding nose and that the Nose in the trajectory of a mounted on the throttle shaft Throttle lever, protrusion, cam or the like engages, so that the throttle only partially opens.

A more very simple and inexpensive to produce Training the throttle stop is given by the fact that he is designed as a rotary socket such that of the diameter the rotary socket the maximum possible opening angle the throttle valve depends.

Preferably contains the motorcycle according to the invention a throttle, which via a cable with a throttle grip communicates and by pressing the throttle grip immediately open or close. Optionally, the throttle position by a sensor (Potentiometer) and a control unit available which, in turn, the amount of fuel injection sets accordingly.

A simple assembly of the throttle stop is given by the fact that he be in the field of attachment of the outer shell of a cable provided for operating the throttle fastened (screwed) is.

According to one preferred embodiment of the invention includes the transmission the motorcycle a variator with one on a drive shaft mounted axially displaceable cone pulley, which serves as Variatorregelgehäuse may be formed, and with a fixed cone pulley. The throttle set includes an axial travel restrictor which is mounted in particular between the conical disks such that he the approach of the axially displaceable cone pulley limited to the fixed cone pulley. This limit leads to a reduction of the maximum possible transmission ratio the variator and thus to a reduction of the maximum vehicle speed.

Around the maximum possible gear ratio reduce the variator, it may be advantageous if the Variator with an axially displaceable mounted on an output shaft Conical disk and a fixed cone pulley is provided and the throttle set includes an axial travel limiter which is mounted such that it has a movement of the axially displaceable Conical disk bounded away from the fixed cone pulley.

Preferably is the Axialwegbegrenzer as a sleeve, especially as tubular cylindrical member, formed, which arranged concentrically to the drive shaft or to the output shaft is.

Around a reliable axial movement of the axially displaceable To ensure conical disk it is advantageous if this axially displaceable from a coaxial to the drive shaft or is received to the output shaft extending sliding sleeve. Trained as a bush Axialwegbegrenzer is in this Case also received axially displaceable by the sliding sleeve.

A further preferred embodiment of the invention provides supplementary or alternatively to a trained as a bush Axialwegbegrenzer ago, that the variomatics a variator with an axially displaceable Contains Wegkegelscheibe and a fixed counter-plate. At the Wegkegelscheibe is a component with a radially inward projecting collar mounted so that the collar on the located to the Wegkegelscheibe side of the counter plate and extends radially inward so far as to be radially includes extending outer contour of the counter-plate. This means that the outer contour of the counter plate continues radially outside is as the inner contour of the collar. Upon reaching a predetermined axial stroke of the Wegkegelscheibe in the direction of Taper disk pushes the collar against one radially outer region of the fixed counter-plate of the variator and thus acts as Axialwegbegrenzer.

Around the measures which the maximum possible vehicle speed limit access, unauthorized access and claims To comply with the anti-panic catalog, provides a further advantageous Embodiment of the motorcycle according to the invention before that of the intake diaphragm receiving connecting flanges and / or the attachment of the throttle stop and / or as Axialwegbegrenzer formed cover part of a variator and / or the transmission gear, in particular the variator, by an adhesive, in particular a threaded adhesive, are secured.

advantageous Further developments of the throttle set according to the invention and the motorcycle according to the invention are in specified in the dependent claims.

Based the drawing, the embodiments of the invention Throttle set and vehicle components of the motorcycle according to the invention shows, the invention and other advantages and advantageous developments and refinements of the invention in more detail described and explained.

It shows:

1 an internal combustion engine with an intake diaphragm according to the invention,

2 the intake passage of an internal combustion engine with inventive intake diaphragm and throttle stop,

3 a schematically illustrated drive train for a motorcycle with a rifle according to the invention,

4 the exploded view of arranged on the drive shaft components and

5 the exploded view of arranged on the output shaft components,

6 a serving as Axialwegbegrenzer cover of a variator and

7 an actuator for a throttle valve.

Of the For better clarity, are in the drawing and description for the same or similar elements the same reference numerals used.

At the in 1 shown internal combustion engine 10 it is a two-stroke engine with injection system for a motorcycle, especially for a Motorcycle or a scooter. In the two-stroke engine, the burned exhaust gases are disposed of in the same stroke, where the fresh mixture into the cylinder 12 flows. Through the intake channel 14 in which there is a throttle 16 is located, only air with a little oil in the crankcase 18 sucked. The fuel takes a different route. The fuel becomes a fuel tank 20 taken by an electric gasoline pump 22 pressurized and arranged on the cylinder head injector 24 fed. One from the crankshaft 26 powered compressor 28 pumps compressed air 30 into the injector 24 , It is a common injection device 24 consisting essentially of a pressure regulator, an antechamber with injector and an electromagnetic valve. The compressed air 30 enters the antechamber of the injector 24 and is enriched there by injector with a precisely calculated dose of fuel. Just before the piston 32 the outlet channels 34 closes, opens the electromagnetic valve of the injector 24 and atomizes the mixture into the combustion chamber 36 , The ignition takes place by means of an ignition system 38 and a spark plug 40 , The injection process and the ignition are digital through control electronics 42 controlled, including the signals of a speed sensor 43 receives.

To the internal combustion engine 10 adapt so that the moped meets the requirements of a moped (maximum speed 25 km / h), is in the intake duct 14 an air intake 44 mounted, which is the cross section of the air passage opening 46 in the intake passage 14 reduced. Further, by adding a mechanical throttle stop, the opening angle of the throttle operable by a throttle grip via a cable throttle 16 limited, what in 2 and 7 was shown in more detail.

According to 2 is on the crankcase 18 of the internal combustion engine 10 a flange surface 48 formed on which by means of threaded screws 50 a connecting flange 52 of the intake duct 14 , which contains an intake manifold, is attached. Between the flange surface 48 and the connecting flange 52 is an air intake panel 44 inserted, which reduces the air passage cross-section in the region of the flange connection. The air passage cross section 46 the Luftansaugblende is determined by experiments and can be, for example, about 50% of the cross section, which without the mounted air intake 44 given is. The air intake panel 44 is punched out of sheet metal or lasered and disc-shaped. It has a circular outer contour, a circular central passage opening 46 and in its edge area holes for receiving the connecting screws 50 on.

At least one threaded screw 50 is designed as a tear-off screw whose head region leaves when a predetermined torque is exceeded when tightening the screw, so that the tear-off screw can not be loosened again and thus produces a non-detachable connection. Instead of using tear-off screws 50 can be a permanent attachment of the connecting flange 52 on the crankcase 18 also be prepared in other ways, for example using an adhesive.

At the intake manifold is a pipe 54 Flanged, is sucked through the ambient air. In the pipe 54 is a throttle shaft 56 rotatably mounted, on which the throttle 16 is attached. The throttle 16 is urged by a return spring not shown in a position in which they the intake 14 essentially closes. An unspecified idle stop prevents complete closing to the idling operation of the engine 10 sure. The throttle 16 can be opened against the force of the return spring. For this purpose is on the throttle shaft 56 a throttle lever 58 assembled.

The throttle lever 58 is disc-shaped and has a protruding cam 60 on. In a recording 62 of the throttle lever 58 is an end of a cable 64 hooked. The cable 64 is connected to a throttle not shown in detail in such a way that by turning the throttle gas (throttle), the throttle 16 open. The cable 64 is in a cable sheath 66 guided. One end of the cable sheath 66 is through a tab 68 and a mother 70 on the pipe 54 attached.

Between the tab 68 and the mother 70 is a throttle stop 72 assembled. The throttle stop 72 is essentially a right angle folded sheet metal strip. A thigh 74 of the throttle stop 72 is between the tab 68 and the mother 70 clamped. The other thigh 76 extends substantially parallel to the pipe 54 , At its free end there is a nose 78 in the path of movement of the projecting cam 60 of the throttle lever 58 engages and thus the angle of rotation of the throttle lever 58 and thus also the opening angle of the throttle 16 limited.

Out 7 is one compared to 2 alternative design of the throttle lever 58 and the throttle stop. According to 7 contains the throttle lever 58 no protruding cam. Rather, he wears one as a pin 170 trained projection, resulting in the rotation of the throttle lever 58 as a result of a Operation of the cable 64 with the throttle lever 58 rotates. On the pipe 54 is a rotary socket 172 assembled. This rotary socket 172 lies in the trajectory of the one 170 , When the opening angle of the throttle 16 reaches its maximum permissible value, the pin hits 170 against the rotary socket 172 and prevents further rotation of the throttle lever 58 and thus also another opening of the throttle 16 , The pin 170 has a thread and is screwed into a threaded bore of the throttle lever. He can also change the throttle lever in other ways 58 be formed. The rotary socket 172 is on the pipe 54 bolted or otherwise secured. It can be exchanged for rotary sleeves with a different diameter, whereby the maximum possible opening angle of the throttle valve 16 can be changed. Of course it is also possible to pin the pipe 54 and the rotary bushing on the throttle lever 58 to fix in a similar manner.

In place of in 7 As shown, the throttle may also be part of a carburettor. Preferably, a cast-on pin already present on the carburetor housing serves as a projection. For example, carburetor carburettor with throttle are commercially available in which original ex factory at the Gaszugaufnahme a pin is molded from behind. This pin can act as a projection that cooperates with a rotary bushing mounted on the throttle lever.

The concrete dimensions of the throttle stop 72 . 172 are determined by experiments. The aim of the experiments is that the throttle 16 open only to the extent that the statutory exhaust and noise emission limits are complied with. For example, the throttle valve can be 16 only open so far that it releases only 50% of the passage opening, with the throttle fully open 16 given is. The possible range of variation of the opening path of the throttle valve 16 can be between 30% and 70%.

3 shows a drive train for a motorcycle or a scooter, especially for a moped. The drive train consists essentially of an internal combustion engine 10 , a continuously variable belt drive 100 , a centrifugal clutch 102 a gear reducer 104 and a drive wheel 106 , From the internal combustion engine 10 is only the piston 32 and the crankshaft 26 seen.

In the illustrated belt drive 100 it is a so-called variator. This has one with the crankshaft 26 rotatably connected drive shaft 112 (Input shaft) and one with the reduction gear 104 rotatably connected output shaft 114 (Output shaft) on.

On the drive shaft 112 is a coaxial to the drive shaft 112 aligned, sliding sleeve 116 stored. On this a variator is arranged axially displaceable. The variator consists of a housing-shaped Wegkegelscheibe 118 and a counter-plate 120 , which is a guide slot for centrifugal weights 122 forms. The centrifugal weights 122 are located between the Wegkegelscheibe 118 and the counter-plate 120 , If during a rotation of the drive shaft 112 the weights 122 As a result of the centrifugal force, they are pushed outwards, they push the conical disk 118 from the counter-plate 120 away (in terms of 3 to the left). At the outer end of the input shaft 112 is by a threaded connection with a nut 124 a slotted disk 126 rotatably mounted. From the sliding sleeve 116 becomes a rifle 128 received axially displaceable. The rifle 128 is located between the Wegkegelscheibe 118 and the conical disk 126 , Their length is calculated so that they are the axial distance between the Wegkegelscheibe 118 and the conical disk 126 limited to an unrestrictable value.

On the output shaft 114 is a slotted disk 130 rotatably mounted. A way cone disc 132 is displaceable on the output shaft 114 arranged and is by a compression spring 134 in the direction of the conical disk 130 pressed. In the V-shaped gap passing through the two conical disk pairs 118 . 126 and 130 . 132 is formed, runs a V-belt 136 constant length. If due to increasing speed the Wegkegelscheibe 118 of the variator in the direction of the conical disk 126 is pushed, the shifts between these two conical disks 118 . 126 running V-belts 136 on a larger contact radius. Because the V-belt 136 has a constant length becomes the Wegkegelscheibe 132 the output shaft against the force of the compression spring 134 from the conical disk 130 pushed away, the V-belt 136 can thus take a smaller contact radius here. As a result of these changes in the contact radii, the gear ratio of the variator increases. The gear ratio, however, is through the bush 128 limited, which acts as Axialwegbegrenzer. The longer the rifle 128 is, the lower is the possible axial stroke of the drive shaft 112 arranged Wegkegelscheibe 118 , With the limitation of the transmission ratio and the maximum possible vehicle speed is limited.

The length of a suitable bush 128 can by experiments in coordination with the design of the air intake 44 and the throttle stop 72 be determined. After a suitable rifle 128 was determined and mounted on the drive shaft, the nuts can 124 . 150 The screw connections are fixed by an adhesive, allowing unauthorized disassembly of the drive shaft 112 and the output shaft 114 arranged components and in particular a removal of the sleeve 128 not possible.

4 shows the main on the drive shaft 112 assembled components. The trained as a variator Wegkegelscheibe 118 takes the counter-plate 120 and the centrifugal weights 122 (only one of which was shown) and is covered by a lid 138 locked. Furthermore, the rifle 128 on the sliding sleeve 116 can be deferred, and the V-belt 136 shown. The slotted disk 126 carries on its side facing away from the conical surface fan blades 140 and thus simultaneously assumes the function of a fan.

While in 4 a usual lid 138 is shown, shows 6 a lid designed according to the invention 138 which serves as Axialwegbegrenzer. In the illustrated component 138 of the 6 is essentially a disk-shaped component 138 , which is produced by punching or lasers. However, it is also possible for a corresponding component to have protruding or arched elements in the axial direction. The component contains three holes 139 for screws for attachment to the counter plate 120 , Furthermore, there are distributed on the circumference three slot-shaped recesses 141 in which the guides of the counter plate 120 to run.

For the functionality according to the invention, the radial structure of the in 6 shown component 138 crucial. The component 138 has a collar 137 on, which extends radially inward to the extent that the outer contour of the counter-plate 120 radially outward than the inner contour of the collar 137 , This causes the axial stroke of the Wegkegelscheibe 118 is limited. Does the Wegkegelscheibe relative 3 to the left, that's how the collar collides 137 of the lid 138 finally to the outer contour of the counter-plate 120 and makes another axial movement of the Wegkegelscheibe 118 impossible to the left. Because the counter plate 122 , as in 3 is shown curved, can be an adjustment of the permissible axial stroke of the Wegkegelscheibe 118 by the design of the central passage opening of the lid 138 make. If the maximum possible ratio of the variator is to be reduced, a lid must be selected, the collar 137 extends further radially inward. This has the consequence that during an axial movement of the Wegkegelscheibe 118 and with her the lid 138 the collar 137 earlier to the counter plate 120 abuts, so that the axial stroke of the Wegkegelscheibe 118 reduced. This results in the smallest possible contact radius of the V-belt 136 increases and the maximum possible transmission ratio of the variator is reduced.

How out 6 it can be seen through the collar 137 limited central passage opening of the lid 138 formed substantially polygonal. This contour is to the contour of the counter-plate 120 adapted so that a uniform conditioning of the collar 137 on the counter plate 120 occurs and no tip pads are given, which could lead to faster wear.

5 shows essential on the output shaft 114 assembled components. The slotted disk 130 contains a cylindrical approach 142 , on which the Wegkegelscheibe 132 postpone, with the Wegkegelscheibe 132 remains axially displaceable. The cylindrical approach 144 the wedge disk 132 serves the improved guidance and is intended to tilt the Wegkegelscheibe 132 prevent. The compression spring 134 is through two guide sleeves 146 . 148 guided. With compressed compression spring 134 push the two guide sleeves 146 . 148 each other. To the axial stroke of the Wegkegelscheibe 132 to limit, is in the case of the arrangement is a box 150 inserted, which serves as Axialwegbegrenzer and the possible distance between the conical disk 130 and the wedge disk 132 limited to a maximum. This has the consequence that the V-belt 136 can not migrate to a large contact radius, which has a limit on the maximum possible transmission ratio result.

Out 5 Furthermore, a centrifugal clutch emerges. This consists of a with the output shaft 114 rotatably connected clutch bell 152 , Inside the clutch bell 152 is a carrier plate 154 arranged non-rotatably with the conical disk 130 connected is. On the carrier plate 154 are three clutch shoes 156 pivoted. The coupling jaws 156 have clutch linings 158 on and off by clutch springs 160 pulled axially inwards so that the clutch linings 158 not on the clutch bell 152 issue. Only when the conical disk 130 and with it the carrier plate 154 and the clutch shoes 156 exceeds a predetermined speed, put the clutch shoes 158 due to centrifugal forces on the clutch bell 152 and transmit torque to them. The nuts 162 and 164 serve to fasten the carrier plate 154 at the conical disk 130 or the attachment of the clutch bell 152 on the output shaft 114 ,

As already explained, the elements are te of the throttle set (intake, throttle flap, and / or sleeve) provided for a subsequent modification of the drive train of a moped. It is intended to reduce the maximum possible driving speed to a value (25 km / h) which also allows persons who do not possess a driver's license to drive with the vehicle. On the other hand, it should also be ensured that the statutory exhaust and noise emission limits are complied with, since otherwise the vehicle will not be approved by the registration office for use on the road.

in the Trade a variety of mopeds are available which are suitable for retrofitting. These mopeds however, have different internal combustion engines and transmissions, with the result that the elements of the throttle set individually on the respective vehicle type must be adjusted. That I the embodiment of one of the elements of the throttle set on the interpretation which may affect other elements, it is appropriate suitable dimensions of the elements in a specific order to be determined by experiments.

The use of a transmission ratio of the transmission affecting sleeve is not mandatory for a successful conversion, but desirable in many cases. When using a bush, the following procedure can be followed:
First, we installed a bushing that limits the adjustment of the gearbox to about 20%, with the result that the maximum transmission ratio is reduced by 80%. Then we installed a suction baffle in the intake duct, which reduces the intake duct cross-section by about 50%. On a test bench it can be checked whether the selection of the intake panel corresponds to the wishes, namely a sufficient reduction of the maximum possible engine speed causes. If the intake diaphragm has too large a passage cross-section, the nominal rotational speed of the internal combustion engine can be exceeded because of the transmission limit of the bushing. However, overshooting by more than 10% should be avoided. If, however, the passage cross-section is too small, this leads to a low driving performance. If the maximum engine speed is too high, an intake with a smaller passage opening must be used, however, the maximum engine speed is too low, we recommend an intake with a larger opening.

After this a suitable air passage aperture was determined, a Adjustment of the rifle. Their length should be set that the maximum permissible vehicle speed is not exceeded can be. This can be done through calculations and through test drives determined with different rifles in a simple manner become.

Possibly can then recheck and adjusting the air intake.

After this in the manner described, the maximum speed of the Vehicle has been lowered, is now a vote with the the exhaust and noise behavior is influenced in such a way that the legal limits are not exceeded become. For this the throttle valve travel is limited. First the throttle valve is set to approximately 50% of its throttle travel. If exceedances of the permissible exhaust gas and noise levels, the throttle must continue to close become. Otherwise, a larger throttle path can be chosen to the performance of the internal combustion engine not unnecessarily limit. Once a suitable throttle position has been determined, a throttle valve stop can be formed accordingly and be installed.

By The experiments described, can be the optimal opening the intake and the optimal dimensions of the throttle stop and / or the sleeve without difficulty to the respective Adapt vehicle types.

The Invention has been described only with reference to some embodiments explained. For the expert in the light of the above description and the drawings many different alternatives, modifications and variants that are covered by the invention and in the wording of the claims fall. For example, the motorcycle instead of a stepless Getriebes also have a manual transmission. To limit the transmission ratio In this case one or more corridors can be blocked be limited by, for example, the rotation of the shift drum becomes.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 3490359 T1 [0005]
• - DE 3732259 C2 [0005]
• - DE 102006044290 A1 [0006, 0007]
• - DE 69318012 T2 [0006]
• - DE 10123609 A1 [0006]
• - DE 60127769 T2 [0009]
• - DE 102006026951 A1 [0009]
• DE 10330980 A1 [0013]

Claims (32)

Throttle set for reducing the speed and / or power of an engine ( 10 ) and a transmission ( 100 ) powered motorcycle with a in the intake passage ( 14 ) of the internal combustion engine ( 10 ) mountable intake panel ( 44 ), the cross section of the intake passage ( 14 ), and with a in the range of the internal combustion engine ( 10 ) mountable throttle stop ( 72 . 172 ), the opening of the throttle ( 16 ), so that it can only be partially opened. Throttle set according to claim 1, characterized in that the intake diaphragm ( 44 ) is disc-shaped. Throttle set according to claim 1 or 2, characterized in that the intake diaphragm ( 44 ) is formed such that it extends between a flange surface ( 48 ) of the engine block and one on this flange surface ( 48 ) mountable connection flange ( 52 ) of the intake duct ( 14 ). Throttle set according to claim 3, characterized in that the throttle set unsolvable screws ( 50 ), in particular tear-off screws, for fastening the connecting flange ( 52 ) on the engine block. Throttle set according to one of the preceding claims, characterized in that the intake diaphragm ( 44 ) at least one passage opening ( 46 ), which is dimensioned such that the passage of air is reduced and thereby the engine speed is limited to a predeterminable value. Throttle set according to one of the preceding claims, characterized in that the intake diaphragm ( 44 ) at least one passage opening ( 46 ) having the cross-section of the intake passage ( 14 ) is reduced by 30% to 70%, in particular by 40% to 60%. Throttle set according to one of the preceding claims, characterized in that the throttle valve stop ( 72 ) of a stationary mountable, stable sheet metal with a protruding nose ( 78 ) which is mountable such that the nose ( 78 ) in the trajectory of one of the throttle shaft ( 56 ) mounted throttle lever ( 58 ), Projection, cam or the like engages, so that the throttle ( 16 ) only partially open. Throttle set according to one of the preceding claims, characterized in that the throttle valve stop as rotary bushing ( 172 ) is formed in the region of the throttle valve ( 16 ) is mountable with a projection ( 170 ) and the opening angle of the throttle valve ( 16 ) to limit. Throttle set according to one of the preceding claims, characterized in that the throttle valve stop ( 72 . 172 ) is dimensioned such that it the opening path of the throttle valve ( 16 ) is limited to 30% to 70%, in particular to 40% to 60%. Throttle set according to one of the preceding claims, characterized in that the throttle valve stop ( 72 ) is designed such that it is in the region of the attachment ( 68 . 70 ) of a cable outer shell ( 66 ) is attachable. Throttle set according to one of the preceding claims, characterized in that the throttle set at least one mechanical component ( 128 . 138 . 150 ), which is intended, the maximum possible transmission ratio of the transmission ( 100 ) and limit it to a predefinable value. Throttle set according to one of the preceding claims, characterized in that the throttle set at least one Axialwegbegrenzer ( 128 . 138 ) for the drive shaft ( 112 ) of a variator ( 100 ) which is designed such that it allows the mutual approach of the on the drive shaft ( 112 ) arranged conical disks ( 118 . 126 ) limited. Throttle set according to one of the preceding claims, characterized in that the throttle set at least one Axialwegbegrenzer ( 150 ) for the output shaft ( 114 ) of a variator ( 100 ) which is designed such that it blocks the movement apart on the output shaft ( 114 ) arranged conical disks ( 130 . 132 ) limited. Throttle set according to claim 12 or 13, characterized in that the Axialwegbegrenzer in the form of a sleeve ( 128 . 150 ), in particular as a tubular cylindrical member is formed. Throttle set according to one of claims 11 to 14, characterized in that the throttle set acts as a Axialwegbegrenzer lid-shaped component ( 138 ), which at a Wegkegelscheibe ( 118 ) of a variator ( 100 ) and that a radially inwardly projecting collar ( 137 ), which upon reaching a predetermined axial stroke of the Wegkegelscheibe ( 118 ) against a fixed counter-plate ( 120 ) of variator ( 100 ) pushes. Throttle set according to one of the preceding claims, characterized in that an adhesive material, in particular a threaded adhesive, is provided, which of the tamper-proof attachment of the throttle valve stop ( 72 ) and / or to prevent disassembly of the mechanical component ( 128 . 138 . 150 ), which determines the transmission ratio of the transmission ( 100 ) is limited to a predeterminable value is provided. Motorcycle with an internal combustion engine and a transmission, characterized by a throttle set according to one of the preceding Claims. Motorcycle according to claim 17, characterized in that in the intake passage ( 14 ) of the internal combustion engine ( 10 ) an air intake panel ( 44 ) is arranged, which the cross section of the intake passage ( 14 ) reduced. Motorcycle according to claim 17 or 18, characterized in that the air intake panel ( 44 ) between a flange surface ( 48 ) of the engine block and one on this flange surface ( 48 ) mounted connecting flange ( 52 ) of the intake duct ( 44 ) is inserted. Motorcycle according to claim 19, characterized in that the connecting flange ( 52 ) on the engine block by means of unsolvable screws ( 50 ), in particular by means of tear-off screws, is attached. Motorcycle according to one of claims 17 to 20, characterized in that in the intake passage ( 44 ) of the internal combustion engine ( 10 ) a throttle valve ( 16 ) and that a throttle stop ( 72 . 172 ) is provided, the opening of the throttle valve ( 16 ), so that it can only be partially opened. Motorcycle according to claim 21, characterized in that in the region of the throttle valve ( 16 ) a throttle stop ( 72 . 172 ) and a lead ( 78 . 170 ) are provided, which during a movement of the throttle valve ( 16 ) relative to each other and whose dimensions and relative position to each other is selected so that they interact and the opening angle of the throttle valve ( 16 ) to a predefinable value. Motorcycle according to claim 21 or 22, characterized in that the throttle valve stop ( 72 ) of a fixed mounted, stable sheet metal with a protruding nose ( 78 ) and that the nose ( 78 ) in the trajectory of one of the throttle shaft ( 56 ) mounted throttle lever ( 58 ), Projection, cam or the like engages, so that the throttle ( 16 ) only partially open. Motorcycle according to claim 21 to 23, characterized in that the throttle valve stop as rotary bushing ( 172 ) is formed, of whose diameter the maximum possible opening angle of the throttle valve ( 16 ) depends. Motorcycle according to claim 21 to 24, characterized in that the throttle valve ( 16 ) via a cable ( 64 ) is in communication with a throttle grip and can be opened or closed by pressing the throttle grip. Motorcycle according to one of claims 21 to 25, characterized in that the throttle valve stop ( 72 ) in the area of attachment ( 68 . 70 ) of the outer jacket ( 66 ) one for actuating the throttle valve ( 16 ) cable ( 64 ) is attached. Motorcycle according to one of claims 17 to 26, characterized in that the transmission has a variator ( 100 ) with one on a drive shaft ( 112 ) mounted axially displaceable cone pulley ( 118 ) and a fixed conical disk ( 126 ) and that the throttle set comprises an axial travel limiter ( 128 ), which is mounted so that it approximates the axially displaceable cone pulley ( 118 ) to the fixed cone pulley ( 126 ) and thus the maximum transmission ratio of the variator ( 100 ) reduced. Motorcycle according to one of claims 17 to 27, characterized in that the transmission has a variator ( 100 ) with one on an output shaft ( 114 ) mounted axially displaceable cone pulley ( 132 ) and a fixed conical disk ( 130 ) and that the throttle set comprises an axial travel limiter ( 150 ) which is mounted such that it detects a movement of the axially displaceable conical disk ( 132 ) from the fixed cone pulley ( 130 ) and thus the maximum transmission ratio of the variator ( 100 ) reduced. Motorcycle according to one of claims 27 or 28, characterized in that the Axialwegbegrenzer as a sleeve ( 128 . 150 ), in particular as a tubular cylindrical member, which is concentric with the drive shaft ( 112 ) or to the output shaft ( 114 ) is arranged. Motorcycle according to claim 29, characterized in that a coaxial with the drive shaft ( 112 ) or to the output shaft ( 114 ) running sliding sleeve ( 116 ) is provided, on which the axially displaceable cone pulley ( 118 . 132 ) is slidably disposed, and that the sleeve ( 128 . 150 ) axially displaceable by the sliding sleeve ( 116 ) is recorded. Motorcycle according to one of claims 27 to 30, characterized in that the variator ( 100 ) a variator with an axially movable Wegkegelscheibe ( 118 ) and a fixed counter-plate ( 120 ) and that at the Wegkegelscheibe ( 118 ) a component ( 138 ) with a radially inwardly projecting collar ( 137 ) is mounted such that the collar ( 137 ) on the to the Wegkegelscheibe ( 118 ) facing away from the counter-plate ( 120 ) and extends so far radially inward here, that he the radial outer contour of the counter-plate ( 120 ) and that when it reaches a predetermined axial stroke of the Wegkegelscheibe ( 118 ) against the fixed counter plate ( 120 ) of the variator abuts and thus acts as Axialwegbegrenzer. Motorcycle according to one of claims 17 to 31, characterized in that the suction diaphragm ( 44 ) receiving connecting flange ( 52 ) and / or attachment of the throttle stop ( 72 ) and / or designed as Axialwegbegrenzer cover component ( 138 ) and / or the transmission gear, in particular the variator ( 100 ), secured by an adhesive, in particular a threaded adhesive, against disassembly.