JP2019537681A - Apparatus for injecting cleaning liquid for the intake circuit in motor vehicles - Google Patents

Abstract

An apparatus for injecting a cleaning liquid for an intake circuit of a motor vehicle is provided. The device comprises a liquid spray means which is connected on the one hand to the suction port and to the cleaning liquid supply port. The device is generally tapered, the smaller diameter end of the device is configured to fit into an intake conduit, and comprises the spray means described above, and the larger diameter end of the device. The portion is configured such that the larger diameter end is retained outside the conduit and is characterized by comprising a port. [Selection diagram] FIG.

Description

  The present invention relates to an apparatus for injecting a cleaning liquid for an intake circuit of a motor vehicle.

  Injecting liquid into the motor vehicle's intake circuit with the motor of the motor vehicle running to ensure that the outside air drawn in by the motor vehicle's intake circuit circulates the cleaning liquid within the circuit. Thus, a method for cleaning the circuit is known. To do this, the hose line between the outlet of the exchanger and the intake conduit is usually removed and the cleaning liquid is injected directly into the intake conduit.

  Currently, there are two techniques for injecting cleaning liquid into the intake circuit.

  The first technique consists in using a canister (similar to an aerosol spray can) containing a pressurized cleaning liquid. The canister is equipped with a spray nozzle. The spray nozzle is manually actuated and is connected to a flexible straw designed to fit into the intake conduit.

  Another technique consists in using a tank that holds the cleaning liquid and is designed to be connected to a compressor or pump. The tank is connected to one end of the flexible tube, and the other end of the flexible tube is equipped with a device for spraying a cleaning liquid.

  Currently available injectors have several disadvantages. For example, Venturi injectors are known, but the Venturi injector must be equipped with a flat disk shaped flask, and the outer diameter of the flask must be larger than the inner diameter of the inlet conduit. The flask is designed to be supported by the periphery of the conduit (after the radiator hose described above has been removed) by extending the periphery of the conduit in a plane perpendicular to the axis of the conduit. And is held in this position by the suction created by suction into the conduit.

  One problem that can be solved by the present invention is to simplify this technique by reducing the number of parts of the device and the risk of improper installation.

  Another problem to which the present invention proposes a solution is to accurately position the device and keep the device in place in the conduit.

  Another challenge is to ensure that the liquid is properly injected into the conduit and there is no risk of leakage, as the liquid used is relatively corrosive and likely to corrode parts of the vehicle's motor. It is to be.

  Another issue relates to the type of injection control used (continuous or impulse) and the injection flow rate of the liquid, which is not always possible or accurate with current technology.

  Another important challenge faced when cleaning the intake is that the cleaning fluid penetrates the combustion chamber, thereby causing serious damage to the engine or even damage due to the inability of the liquid to be compressed in the combustion chamber. It is related to the risk that an engine failure may be caused. For this reason, the cleaning operation requires the presence of qualified technicians who continuously monitor the cleaning process. This may be due to poor (quality) injection of liquid or excessive injection of liquid into the intake circuit.

  Finally, another challenge with modern direct-injection engines (both gasoline and diesel) is a major engine failure engine, as carbon deposited on intake valves degrades performance and increases pollutant gas emissions. It is related to being identified as one of the causes. This may be due to the difficulty of the injected cleaning liquid to reach the intake valve located at the distal end of the intake manifold.

  The present invention provides a simple, efficient and economical solution to at least some of these issues.

  The present invention proposes an apparatus for injecting a cleaning liquid for an intake circuit of a motor vehicle. The device comprises a liquid spraying means connected on one hand to the suction port and to the cleaning liquid supply port, the device being generally tapered and the smaller diameter end of the device being: Comprising a spray means configured to fit into an intake conduit and the larger diameter end of the device configured to be retained outside the conduit and comprising the port It is characterized by.

  From the above, it can be seen that all that is required is to fit the smaller diameter end of the device into the conduit so that the device is correctly positioned. The device is tapered so that it can be adapted to conduits of various diameters, which is advantageous. For example, if the conduit has a diameter between 3 mm and 10 mm (including 3 mm and 10 mm), the end of the device, when in the mounting position, will engage the smaller diameter end inside the conduit and To ensure that the larger diameter end is outside the conduit, it has a diameter of less than 3 mm and a diameter of more than 10 mm, respectively. In the above mounting position, the spray nozzle is located inside the conduit, not just at its inlet, which optimizes the injection of liquid into the conduit and avoids the loss of liquid during the injection process It is advantageous to

  The engine of the vehicle can be of any type, in particular of the diesel or gasoline type.

The device according to the invention may consist of one or more of the following features, either separately or in combination with each other.
The device comprises a metal body which is generally cylindrical and is surrounded by a tapered sleeve made of plastic material.
The spray means and the port are mounted on the body.
The body has internal conduits for connecting the nozzles to these ports.
The body comprises, at one axial end, an outer annular flange axially disposed on the sleeve.
The body has, at the smaller diameter end, a first orifice or housing for attaching a spray nozzle connected to the intake port, and a second air passage orifice connected to the intake port.
The sleeve is made of an elastomer.
The main body is made of aluminum.
The smaller diameter end has a diameter between 20 mm and 60 mm, preferably between 30 mm and 50 mm, and the larger diameter end has a diameter between 70 mm and 120 mm, preferably 80 mm. It has a diameter between １００100 mm.
The intake port includes an air flow control valve and / or a purge valve, or is equipped with an air flow control valve and / or a purge valve.
The intake port includes a connection to a flexible hose or is equipped with a connection to a flexible hose.

The present invention also relates to a mobile cleaning cart for an intake circuit of a motor vehicle, wherein the mobile cleaning cart includes:
A main tank designed to contain the cleaning fluid of the intake circuit,
A first pump having a liquid inlet connected to the tank and one liquid outlet connected to one end of the flexible hose, the other end of the flexible hose being connected to the above-described device or the like A first pump connected to the device of
Control means for a pump for adjusting the injection and flow rate of liquid by the device,
Consists of

The carts are, among others:
A second tank designed to hold a cleaning solution for the particulate filter;
A second pump having a liquid inlet connected to the second tank and a liquid outlet connected to one end of a second flexible hose, said second pump being operated to activate said second pump; A second pump, wherein control means is connected to the second pump;
Can consist of

The carts are, among others:
A third tank designed to hold a cleaning fluid for a fuel injection circuit, wherein the first tank and the third tank are a first solenoid valve and a second tank controlled by the control means. Via a solenoid valve, respectively connected to the inlet of the first pump, the outlet of the first pump via a third solenoid valve and a fourth solenoid valve respectively controlled by the control means, A third tank connected to the above-mentioned end of the first flexible hose and one end of the third flexible hose, respectively;
A fourth flexible hose having one end connected to the third tank;
Can be provided.

  The fourth tube can be connected at the end opposite to the tank to a connection unit in which a filter is installed.

The carts are, among others:
An electrical cable connecting the pump and the control means to the battery of the vehicle, and / or
Information display means, and / or
Adjusting means connected to the control means or being a part of the control means,
Can consist of

The or each tank can be comprised of a body, the body comprising:
Two necks of different diameters at the upper end, the first neck being configured to allow filling of the tank and the second neck providing for the installation of a level sensor in the tank. Two necks configured to allow;
A recess at the lower end, the recess being shaped to be able to accommodate a sensor, in particular for detecting water, in fluid communication with the liquid outlet connection unit;
Consists of

The present invention also relates to a multifunctional mobile cleaning cart for an engine of a motor vehicle, the multifunctional mobile cleaning cart having one or more of the following features.
The main tank, which is designed to hold the cleaning fluid of the intake circuit,
A first pump having a liquid inlet connected to the tank and one liquid outlet connected to one end of the flexible hose, the opposite end of the flexible hose being connected to the device described above. A first pump connected,
Control means for a first pump for adjusting the injection and flow rate of the liquid,
A second tank designed to hold a cleaning solution for the particulate filter;
A second pump, wherein the liquid inlet is connected to the second tank and the liquid outlet is connected to one end of the second flexible hose;
Control means for the second pump, used to operate the second pump;
A third tank designed to hold a cleaning fluid for a fuel injection circuit, wherein the first tank and the third tank are a first solenoid valve and a second tank controlled by the control means. Via a solenoid valve, respectively connected to the inlet of the first pump, the outlet of the first pump via a third solenoid valve and a fourth solenoid valve respectively controlled by the control means, A third tank connected to the aforementioned end of the first flexible hose and one end of the third flexible hose, respectively.
A fourth flexible hose having one end connected to the third tank;
An electrical cable connecting the pump and the control means to the battery of the vehicle,
Information display means,
Adjusting means connected to the control means or being a part of the control means,
The fourth tube can be connected at the opposite end to the tank at the connection where the filter is located, and / or
The or each tank may comprise a body, the body comprising:
Two necks of different diameters at the upper end, the first neck being configured to be able to fill the tank and the second neck providing for the installation of the level sensor in the tank. Two necks configured to allow;
A recess at the lower end, shaped to accommodate a sensor for detecting water in particular, wherein the recess is in fluid communication with the outlet connection unit;
Having.

The present invention also relates to a tank for a mobile cleaning cart, the tank comprising a body, the body comprising:
Two necks of different diameters at the upper end, the first neck being configured to be able to fill the tank and the second neck providing for the installation of the level sensor in the tank. Two necks configured to allow;
A recess at the lower end, specifically shaped to receive a sensor for water detection, the recess being in fluid communication with the outlet connection cap unit;
It is characterized by.

A tank according to the present invention may include one or more of the following features, either separately or combined with each other.
The body is made in one piece, for example by injection molding, and is preferably made of a plastic material.
The necks have different heights, with the second neck being higher than the first neck.
The neck has an external thread for a sealing plug of the tank.
The end cap unit is substantially L-shaped.

  The body of the tank can be made with a cut-out part. It is intended that at least one of the tank necks, for example, can be initially closed, but has a line of weakness, along which a cutout is formed. The shape of the weakening line can be substantially circular.

  In the following description, the invention will be better understood and other details, features and advantages of the invention will become more apparent. The following description is given by way of non-limiting example and refers to the accompanying drawings.

1 is a schematic perspective view of a mobile cleaning cart according to the present invention. 1b is a very schematic view of the cart of FIG. 1a and its accessories. 1 is a schematic perspective view of an injection device according to the present invention. Fig. 2b is a schematic perspective view of an end of the device of Fig. 2a. Fig. 2b is a schematic perspective view of an end of the device of Fig. 2a. Fig. 2b is a schematic exploded perspective view of the device of Fig. 2a. FIG. 2b is a very schematic axial section through the device of FIG. 2a installed in the intake conduit of the vehicle. FIG. 3 shows a very schematic axial section through a spray nozzle for the device according to the invention. FIG. 2 is a schematic perspective view of a tank that can be used in the cart of FIGS. 1a and 1b.

  FIG. 1 shows a mobile cleaning cart, in particular a mobile cleaning cart in the intake circuit of a motor vehicle. As shown below, the cart also allows for cleaning of the vehicle's fuel circuit, turbo and particulate matter filters (FAP).

  The cart 10 is provided with four casters 12 in the illustrated example, so that an operator can easily move the cart 10 near a vehicle to be cleaned, for example, at a maintenance work place.

Cart 10 includes:
First means for cleaning the intake circuit;
A second means for cleaning the particulate matter filter;
Third means for cleaning the fuel injection circuit and the turbo;
Consists essentially of

The first means for cleaning is
A first tank 14 having a capacity of, for example, 1 liter or 2 liters or more, which is designed to hold a cleaning liquid (for example, a product of Air Intake Cleaner commercially available from Wynn's ™), which closes a filling orifice. A first tank 14 comprising a stopper 16 for closing;
A first pump 18 having a liquid inlet 18a connected to the first tank 14 and a liquid outlet 18b connected to one end of the flexible tube 20; A first pump 18 connected to an injection device 22, such as the injection device shown in FIGS. 2a to 2d and 3,
Is provided.

  In the illustrated example, the inlet 18a of the pump 18 is connected to the outlet 14a of the tank 14 via the solenoid valve E1. The outlet 18b of the pump 18 is connected to the above-mentioned end of the tube 20 via the pressure sensor P and the solenoid valve E2.

  The pump 18 is preferably a high pressure pump, which can increase the pressure of the liquid leaving the pump to a pressure of more than 5 bar, preferably more than 10 bar, for example a pressure of 12 bar.

The second means for cleaning is
A second tank 24 having a capacity of, for example, 1 or more 2 liters, designed to contain a cleaning liquid (for example, a product of the Diesel Particulate Rate Filter Cleaner or a product of the Diesel Particulate Rate Filter Regenerator by Wynn's ™). A second tank 24 comprising a stopper 26 for closing the filling orifice;
A second pump 28 having a liquid inlet 28a connected to the outlet 24a of the tank 24 and a liquid outlet 28b connected to one end of the flexible tube 30;
Consists of

The third means of cleaning is
A cleaning liquid (e.g., a commercially available Injection System Purge product or a Diesel System Purge product by Wynn's (TM)) or a turbo cleaning product designed to be filled, e.g. A third tank 34, comprising a closure plug 36 at the filling orifice;
A first pump 18;
Consists of

  In the illustrated example, the inlet 18a of the pump 18 is connected to the outlet 34a of the tank 34 via the solenoid valve E3. The outlet 18b of the pump 18 is connected to the end of the flexible tube 40 via the pressure sensor P and the solenoid valve E4.

  The tank 34 also has an inlet 34b connected to one end of another flexible tube 50.

  The flexible tubes 20, 30, 40, 50 are preferably provided at each end with quick connection means M, for example of the elastic interlocking type and / or of the snap-fit type. The end of the tube 50 opposite the tank 34 can also be equipped with a filter F, which is preferably integrated into the connection means M. The purpose of this filter F is to suppress or even avoid contamination of the tank 34 with particles from the injection circuit of the vehicle. The filter F is designed, for example, to capture particles having a size of 25 μm or more. The filter can be, for example, a sintered type.

  The tanks 14, 24, 34 must each be associated with a level sensor N to detect the level of liquid in the tank.

  The sensors N and P, the solenoid valves E1, E2, E3 and E4, and the pumps 18, 28 are connected to a control means C, which in particular comprises an electronic board. In the illustrated example, the control means C uses the electric cable R facing the control means C, which is attached to the end using a fastener or the like (eg, an alligator clip), to supply power from the vehicle battery. Designed to receive. As a variant, the cart can be provided with a rechargeable battery powered by the power supply means C.

  The control means C includes an adjustment button or a rotation button B (for selecting an option, for example), a switch I and the like. The cart also comprises a display means T, such as a screen, configured to allow the data to be displayed. The means C and T can be arranged on the front and / or top of the cart, which is called a control panel.

  In the following, reference is made to FIGS. 2a to 2d and FIG. 3, which show one scheme of the embodiment of the device 22 described above.

  The device 22 comprises a liquid spraying means 52 connected on the one hand to an intake port 56 and on the other hand to a cleaning liquid supply port 54. The device 22 is generally tapered and the smaller diameter end 22a is configured to fit into the intake conduit K (FIG. 3) and comprises the spraying means 52 and the larger diameter end. Portion 22b is configured to be retained outside the conduit and has ports 54 and 56.

  Apparatus 22 comprises a metal body 58 that is substantially cylindrical (around axis A) and is surrounded by a tapered sleeve 60 made of plastic. The means 52 and the ports 54 and 56 are fitted on a body 58, which has internal conduits 62 and 64 for connecting the means 52 to these ports.

  In the illustrated example, the spraying means comprises a liquid spray nozzle 52a and at least one air passage orifice 52b designed to drive and accelerate the liquid by the Venturi effect. The spray nozzle allows to spray a fog consisting of a plurality of micrometer sized droplets.

  As can be better seen in FIG. 3, nozzle 52a is connected to port 54 by a main internal conduit 62 and orifice 52b is connected to port 56 by a second internal conduit 64.

  The orifice 52b discharges at the end of the body 58 onto a flat transverse surface. The nozzle 52a is arranged in the housing portion 66 in the main body 58 that discharges onto the above-described surface, and is fastened by, for example, screwing.

  The body 58 has an outer annular flange 68 at an axial end featuring the means 52 for axially positioning the sleeve 60 (FIG. 3).

  The intake port 56 is equipped with an air flow control valve 70 and / or a purge valve 72. The power port 54 comprises or is equipped with connecting means M, which is of the same type as described above, preferably by elastic interlocking and / or clicking in place, It is designed to mate with a further means M of the flexible tube 20.

  The sleeve 60 has an axial internal bore having a diameter approximately equal to or slightly greater than the outer diameter of the body 58, such that the sleeve 60 and the tapered outer surface are simply fitted to the body 58. It can be attached to the main body 58. The tapered outer surface extends over the entire axial dimension of the sleeve 60 in the example shown. The smaller diameter end of the sleeve 60 is designed to mate with the aforementioned flange 68 of the body 58 by being pushed axially. In this installed position, the larger diameter end of sleeve 60, particularly its transverse end face, is substantially aligned with the transverse surface of the end of the body having ports 54 and 56.

  Sleeve 60 is preferably made of an elastomer. The main body 58 can be made of aluminum.

  By way of example, one end 22a has a diameter between 20 mm and 60 mm, preferably between 30 mm and 50 mm, and the end 22b has a diameter between 70 mm and 120 mm, preferably between 80 mm and 100 mm. With a diameter between.

  The transverse dimensions of the device 22 allow the device 22 to be fitted to a conduit K having a different inner diameter, for example, between 40 mm and 90 mm.

  FIG. 3 shows the installation position of the device 22 in the conduit K, where, for example, after removing the radiator hose, the end 22a of the device is engaged in the conduit through the inlet of the conduit. In this position, the device 22 is engaged up to the sleeve, in particular up to the tapered surface of this sleeve, and is axially supported at the periphery 74 of the inlet of the conduit K.

  FIG. 3 clearly shows that the means 52 are arranged in front of the inlet to the conduit K (displaced in the axial direction), which is advantageous as explained above (injecting liquid). The valve can be injected closer.)

  During the cleaning operation of the intake circuit of the motor vehicle, the operator moves the cart 10 close to the vehicle and opens the lid to access the engine of the vehicle. The operator removes the connecting radiator hose to the intake conduit K, for example, at the outlet of the exchanger, and connects the device to the flexible tube 20 before connecting the device 22 to this conduit as shown in FIG. To engage. The device is advantageously arranged immediately after the air mass sensor and as close as possible to the intake valve. The electric cable R is connected to the terminal of the battery of the vehicle, and the cart 10 is started. A cleaning liquid specially designed for cleaning the intake circuit of the vehicle is injected into the tank 14. The vehicle's engine is started and ambient air is drawn in by conduit K and accelerated by passing through port 56 and conduit 64 of device 22 according to the flow rate regulated by valve 70. Valve 70 allows the amount of air to be increased or decreased to ensure that the engine starts properly without knocking. Next, the cleaning process is started by the operator, for example, by operating the pump 18 and the solenoid valves E1 and E2 using the cart control means C to inject the cleaning liquid through the nozzle 52a of the apparatus. Pump 18 is preferably controlled to provide a pulse of liquid to device 22. The flow rate of air released by the orifice 52b is adjusted to optimize the spray of liquid in the conduit and promote the flow of liquid in the intake circuit. By discharging air through the orifice 52b, the cleaning liquid is sprayed into fine droplets through the combined venturi nozzle 52a, thereby optimizing the ejection of the liquid without condensation or leakage. The liquid can be jetted at a rate of 6 pulses per minute (at a defined safe volume) and the processing time can be about 1 hour. An operator can use the valve 70 to adjust the injection to optimize the cleaning process. Tests show that motor chattering and knocking are eliminated and that the operator does not need to continuously monitor the cleaning process. The location of the device and the combination described above (fine spray and Venturi effect) allow liquid to reach the intake valve, a mechanism that most vehicles have. At the end of the cleaning cycle, when a certain amount of cleaning liquid has been injected into the suction circuit, a level sensor N in the tank 14 causes the control means C to stop the cleaning process (ie, stop the pump 18). ) To send the signal. The operator can stop the motor of the vehicle and remove the various accessories of the cart (tube 20, device 22, etc.). The purge valve 72 of the device 22 can be used to balance pressure in the conduit with ambient pressure, thereby facilitating removal of the device 22 from the conduit K. The cleaning liquid is naturally drained during the next operating cycle of the vehicle.

  If the particulate filter is to be cleaned, the operator disconnects the upstream conduit connected to the temperature sensor of the vehicle and connects the flexible tube 30 to the particulate filter using connection means M. Can be. The connecting means M here can be, for example, of the needle type. The electric cable R is connected to the battery terminal of the vehicle, and the cart 10 is started. A first cleaning liquid specially designed for cleaning the particulate filter is injected into the tank 24. Using the control means C of the cart, the cleaning is started by the operator in order to activate the pump 28 and to inject the cleaning liquid into the aforementioned conduit. The motor of the vehicle is started. With the motor running, a second liquid for rinsing or regeneration is injected into the tank 24. At the end of each cycle, when a certain amount of liquid has been injected into the intake circuit, the level N sensor in the tank 24 causes the control means C to stop the corresponding cycle (ie, stop the pump 28). Signal). Next, the operator can stop the motor of the vehicle and remove various accessories (such as tubes 30) of the cart.

  During the cleaning of the fuel injection circuit and the turbo, the operator labels and removes the fuel intake and return lines of the motor, for example upstream of the fuel filter. The operator connects tube 40 to the location of the intake conduit and tube 50 to the location of the return conduit. Two separated conduits are connected together by a bypass (shunt). The electric cable R is connected to the terminal of the battery of the vehicle, and the cart 10 is started. One or more cleaning liquids specially designed for cleaning the injection circuit and / or the turbo are sequentially (ie, successively) injected into the tank 34. The motor of the vehicle is started. Next, using the control means C of the cart, the cleaning process is started by the operator to operate the pump 18 and the solenoid valves E3 and E4 to inject the cleaning liquid into the injection circuit. The cleaning liquid returns (in a closed circuit) through the tube 50 and into the tank 34. Once the cleaning cycle is completed, at the end of the predetermined time, the operator can shut down the vehicle engine and remove the various accessories of the cart (tubes 30, 40, etc.).

  FIG. 4 is one example of an embodiment of a spray nozzle 52a that can be used in an apparatus according to the present invention. In the illustrated example, the nozzle 52a has a screw portion that is screwed into the housing portion 66 of the main body. As is conventional, the nozzle 52a has a rear end 52aa that connects to the conduit 52 and an opposite front end 52ab from which liquid is discharged. Here, this front end features a ring O, which features a narrow central orifice and has a tapered rear surface. The front surface of the cylindrical plug S, which is a substantially spherical, hemispherical or tapered surface, abuts against the tapered rear surface, and the front surface is fastened to the ring O in the axial direction. A plug S is inserted into the cylindrical bore in the body of the nozzle with some play so that liquid can flow around it. The liquid is guided from the rear end 52aa to the front end 52ab by flowing between the plug and the ring O, especially around the plug S, and through the orifice of the ring O. The liquid is then sprayed at a particular angle of the discharge cone.

  FIG. 5 illustrates one type of embodiment of the tanks 14, 24, 34 that can be used in the cart 10 for storage of each of the different cleaning liquids.

  The tank has a storage capacity of, for example, 1 L or 2 L.

  In the example shown, there is a body, which is generally in the shape of a parallelepiped and has at its upper end two necks 80, 82 of different diameters which are substantially cylindrical and of different diameter. The smaller diameter neck 80 is open at its free end and has external threads for plugs 16, 26, 36. The larger diameter neck 82, which is initially closed at its free end, is perforated or cut out to allow the sensor to be mounted at height N in the tank. To do this, the neck may have a peripheral weakening line 90 at the transverse top surface for discarding and removing material at the free end of the neck. The neck 82 can also have external threads that thread into a plug (not shown). The necks 80, 82 have different heights, in which case the neck 82 is higher.

  At its lower end, the body of the tank is provided with a connecting spout 84 which defines the aforementioned outlets 14a, 24a, 34a of the tank. Here, the spout 84 is L-shaped as a whole. In the area of this spout 84 at the bottom of the tank, a water sensor 88 is provided at the reinforcing joint 86. Tank 24 need not necessarily be designed to include this sensor 88. The other two tanks 14 and 34 are advantageously provided with such a sensor 88, which is connected to the control means C. The cleaning liquid stored in the tank 24 is generally aqueous, and the cleaning liquid stored in the tanks 14 and 34 contains a solvent other than water. The function of the sensors 88 present in the tanks 14, 34 is to signal the control means C when an inappropriate aqueous liquid is injected into these tanks (using audible or visible alarms). For example, the operator can be alerted through the display screen T).

  Thus, the cart described above is multifunctional or versatile in nature, as it can be used to clean multiple parts of a motor vehicle motor vehicle.

Claims (15)

  An apparatus (22) for injecting a cleaning liquid for an intake circuit of a motor vehicle, the apparatus including a liquid spray means (52) connected to an intake port (56) and a cleaning liquid supply port (54), the apparatus comprising: Has a generally conical shape, the smaller diameter end (22a) being adapted to engage in an intake pipe (K) and having said spray means, said diameter being The larger end (22b) is configured to be retained outside the pipe and has the port, the device being substantially surrounded by a conical plastic sleeve (60). A cylindrical metal body (58).   Apparatus (22) according to claim 1, wherein said spray means (52) and said ports (54, 56) are supported by said body (58), said body connecting said spray means to these ports. The device comprising an internal duct (62, 64) connecting to the device.   The device (22) according to claim 1, wherein the body (58) comprises, at one axial end, an outer annular rim (68) for axially positioning the sleeve (60). ,apparatus.   The device (22) according to claim 1, wherein the body (58) has a spray nozzle (52a) connected to the supply port (54) at the smaller diameter end (22a). An apparatus comprising: a first orifice or receptacle (66) for mounting; and a second air passage orifice (52b) connected to said intake port (56).   The device (22) according to claim 1, wherein the sleeve (60) is made of an elastomer.   The device (22) according to claim 1, wherein the body (58) is made of aluminum.   Device (22) according to any one of the preceding claims, wherein the smaller diameter end (22a) has a diameter between 20mm and 60mm, preferably between 30mm and 50mm. A device having a diameter, said larger diameter end (22b) having a diameter between 70mm and 120mm, preferably between 80mm and 100mm.   Apparatus (22) according to any of the preceding claims, wherein the intake port (56) comprises a valve (70) and / or a purge (72) for regulating the air flow, or A device equipped with a valve (70) and / or a purge (72) for regulating the air flow.   The device (22) according to any of the preceding claims, wherein the supply port (54) comprises a connector (M) for connecting to a flexible hose (20), or An apparatus equipped with the connector (M). A movable trolley (10) for cleaning an intake circuit of a motor vehicle,
A first tank (14) intended to contain a cleaning liquid of the suction circuit;
A first pump (18) having a liquid inlet (18a) connected to the tank and a liquid outlet (18b) connected to one end of a flexible hose (20), the first pump (18) comprising: An opposite end of the first pump (18) connected to the device (22) according to any of the preceding claims;
Control means (C) of said pump for adjusting the injection of said liquid and the flow of liquid through said device;
A movable trolley comprising: The trolley (10) according to claim 10, wherein:
A second tank (24) intended to contain a cleaning liquid for the particulate filter;
A second pump (28) having a liquid inlet (28a) connected to said second tank and a liquid outlet (28b) connected to one end of a second flexible hose (30). , Said control means (C) comprises: a second pump connected to said second pump for operating said second pump;
The trolley further comprises. The trolley (10) according to claim 9, wherein:
A third tank (34) intended to contain a cleaning liquid for a fuel injection circuit, wherein said first tank (14) and said third tank (34) comprise said control means (C). Connected to the inlet (18a) of the first pump (18) via a first solenoid (E1) and a second solenoid (E3) controlled by the The outlet (18b) is connected to the end and the first end of the first flexible hose (20) via a third solenoid (E2) and a fourth solenoid (E4) controlled by the control means. A third tank (34), each connected to one end of three flexible hoses (40);
A fourth flexible hose (50) having one end connected to the third tank;
The trolley further comprises.   The trolley (10) according to claim 12, wherein the fourth hose (50) has a filter (F) integrated connector (M) at the end opposite the tank (34). Trolley connected to. The trolley (10) according to claim 13, wherein:
An electric cable (R) connecting the control means (C) to a battery of the vehicle, and / or
Information display means (T), and / or
Adjusting means (I, B) connected to or forming part of the control means;
The trolley further comprises. A trolley (10) according to any one of claims 10 to 14, wherein the or each tank comprises a body, the body comprising:
Two necks of different diameters at the upper end, a first neck being configured to allow filling of the tank, and a second neck of a level sensor in the tank; Two necks configured to allow for attachment;
A recess at the lower end configured to house a sensor, particularly a water detection sensor, wherein the recess is in fluid communication with the liquid outlet stub;
A trolley with a.

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