FR3006605A1 - DEVICE AND METHOD FOR COMPENSATING THE POLLUTANT GASEOUS RELEASES OF A THERMALLY ENGINEED VEHICLE IN THE ENVIRONMENT OF SAID VEHICLE - Google Patents

Abstract

The invention relates to a device (1) suitable for being mounted on a heat engine vehicle (2) for the compensation of polluting gas (3) and dust (4) emissions emitted into the environment of said vehicle, said device comprising means (5, 12) for treating said gaseous emissions and dust emitted by the vehicle, in the perimeter of the latter, in order to extract elements harmful to people.

Description

The invention relates to a device and method for the compensation of the gaseous emissions pollutants and dusts of a vehicle with a thermal engine in the environment. said vehicle. It is known that the motor vehicles, numerous in the urban cities, contribute to pollute strongly these cities by the polluting gaseous emissions of their engine and the emitted dusts. These polluting discharges and dusts are harmful to the health of the people who are subject to them. The invention aims to remedy all or part of these disadvantages. It is proposed according to the invention a device adapted to be mounted on a heat engine vehicle for the compensation of gaseous pollutants and dust emitted 15 in the environment of said vehicle, said device comprising means for treating said gaseous emissions pollutants and dust , in the perimeter of the vehicle to extract elements harmful to people. As a result, it is possible for each vehicle to process at least a portion of its gaseous emissions and dust emissions, in proportion to the number of thermal motor vehicles circulating in a given zone, which contributes to reducing the concentration effect of said vehicles. emission of gaseous pollutants and dust in said area and improve the air breathed by people in the vehicle environment, particularly near dense traffic lanes. Said means may be configured to directly process the gaseous emissions at their emission, for example near their vehicle exhaust and / or the rear part of the vehicle, for example by a fluid curtain projected transversely to the exhaust stream of the vehicles. gaseous discharges downstream thereof. Said fluid may comprise products agglomerating said harmful elements, for example partly detergents, able to dissolve some of said harmful elements such as soot and likewise the dust emitted and entrained by the displacement of the vehicle, the resulting deposits being precipitated for recovery .

Advantageously, said means are able to treat a mixture of air, dust and said pollutant gaseous emissions surrounding the vehicle. Such a mixture can be formed close to the source of the gaseous pollutant emissions of the vehicle, namely close to its muffler. At this position, in particular at the rear part of the vehicle, it is possible to recover some of the volatile dust emitted and lifted by the vehicle. Said means are advantageously capable of physically filtering said mixture to extract deposits corresponding to the dust or similar debris present in said mixture.

Said means may also in addition to the physical filtration be capable of performing a physicochemical filtration of said mixture, for example by a clean wet way to dissolve, or even precipitate some of said harmful elements, such as nitric oxides, carbon, dust and other particles said mixture.

Said means may comprise an enclosure adapted to be fixed to the vehicle and comprising a device for driving said mixture into the chamber, a physical filtration stage of said mixture driven into the chamber, for example of the cyclonic current type, and optionally a physicochemical filtration stage of the resulting mixture, for example of the spray or fluid bath type of this mixture, before an external evacuation of the treated mixture of the enclosure. Said drive device is advantageously a suction turbine of the mixture in the enclosure, electrically powered from said vehicle and causing mixing in the enclosure, in said stages to an outlet of the enclosure. Said driving devices and enclosure are advantageously adapted to the volume of gaseous pollutant emissions and dust emitted by the vehicle. A suction skirt of said mixture, or even a mixing cone, for example of the venturi type, may be associated with said enclosure, or even attached to the vehicle, advantageously disposed at the outlet of the exhaust, for confining the mixture and driving said turbine at least partially, this skirt or suction cone of the air, gaseous emissions and dust emitted by said vehicle.

Said enclosure is advantageously shaped to be fixed to a free and convenient place on the vehicle, for example in the trunk or under the trunk of the vehicle, be accessible for its maintenance, for example for the removal of dust and deposits captured during operation.

Said enclosure can advantageously be formed in one of the bumper of the vehicle, in particular the rear bumper or be attached to the bumper. Said skirt may extend along said bumper in the lower part of the vehicle, being configured to confine said mixture on the skirt for suction.

According to embodiments taken alone or in combination, the inlet of the mixture can be made at the front of the vehicle to be relatively close to the dust and gaseous emissions emitted at the rear of a previous vehicle in urban traffic, and the output of the treated mixture corresponding to a purified air made at another location of the vehicle, preferably on the pedestrian side of the roadway relative to the direction of movement of the vehicle to allow people to breathe. The entry can still be made at the rear of the vehicle, for example in connection with its muffler as mentioned, the output can be made also at the rear of the vehicle, away from the entrance. The invention also relates to a method for compensating for the dust and gaseous pollutant emissions emitted by a heat engine vehicle comprising a step of capturing at least a portion of the dust and gaseous pollutant emissions emitted by said vehicle in the environment of the vehicle, in a mixture of air, said dust and gaseous pollutants, and treatment of said mixture in order to extract elements harmful to people, and rejection of the treated mixture in the environment of said vehicle. Said mixture of air, dust and said discharges is advantageously made in a given volumetric proportion, to allow a fluidic clearance conducive to said extraction of harmful elements. Said treatment of said mixture is necessarily accompanied by a maintenance treatment by the person using the vehicle, for example to periodically extract the deposits resulting from the extraction of said harmful elements.

The invention also relates to a kit for mounting the aforementioned device on a vehicle with a heat engine, comprising an enclosure adapted to be fixed to the vehicle, comprising a device for driving said mixture into the chamber, a filter element of said mixture driven into the enclosure, a removable tray for depositing dust resulting from said filtration, a skirt for confining said mixture for the purpose of driving it into the enclosure and a conduit for external evacuation of the treated mixture from the enclosure. These features and advantages of the invention and others will become more apparent from the following description of embodiments of the invention with reference to the accompanying drawings, in which: Figure 1 is a schematic perspective view partial of a vehicle equipped with a device for the compensation of gaseous emissions pollutants and dust according to the invention, in use; Figure 2 is a partial diagrammatic elevational view of the vehicle of Figure 1 showing the device mounted on the vehicle; and Fig. 3 is a partial rear view of the vehicle showing the device of Fig. 1. In the following description, like references are used to designate similar or identical elements. With reference to the drawing, there is illustrated a device 1 according to an embodiment of the invention mounted on a vehicle 2 with a heat engine, this device being designed to implement a compensation of the gaseous pollutant emissions 3 and dust 4 emitted in the environment of said vehicle, for example in the perimeter of the latter, during its operation. Such a device can be integrated into the vehicle during its manufacture or be attached to the latter in the form of a kit ready to be mounted. The device 1 here comprises a tubular enclosure 5 fixed to the bumper 6 of the vehicle. This enclosure extends over the length of the bumper in rear and bottom edge of the latter, over a distance of several centimeters, for example from 3 to 10 cm to the rear and 3 to 5 cm downwards. Thus, it is arranged to receive the exhaust gas 3 emitted by the muffler 7 of the vehicle by its side vis-à-vis or left wing. This flange is open towards the outlet duct 7a of the exhaust pipe, being bent inwards in a relatively wide inlet shape 8, for example 2 to 5 times larger than the section of the outlet pipe of the pot. exhaust, and tapered out to form an internal venturi channel 9 opening on a turbine 10 for driving the gas into the enclosure. The turbine is configured to drive the gases and the air sucked in at its lower part, below the vehicle. Air 11 is also drawn through the bent inlet 8 at the exhaust pipe outlet. The air / dust gas mixture circulates in the chamber towards its right wing where a dust filter 12 is housed in the air gas dust mixture entrained through this filter. The filtered mixture leaves the enclosure by the end of its right wing, for example by a suitable conduit 13. The dust collected by the filter is deposited in a tray 14 accessible through a trap 15 of the enclosure arranged for s' open towards the tray, for example hinged to the upper level of the enclosure. The turbine 10 is electrically driven from the vehicle but also partly by the pressure of the exhaust gas 3. Thus, the device sucks the dust raised by the rolling vehicle, the gases released by the vehicle and the air under the vehicle. The filtered residues are collected in said tank and extracted from the latter periodically, according to the rolling of the vehicle. It should be noted that the enclosure may comprise a lower skirt 16 of the vehicle which contributes to confining the gaseous mixture and reducing its drag while running by suction of the air. Naturally, the filter 12 will be adapted to the vehicle and the flue gas discharge therefrom to allow the gaseous mixture to be processed efficiently and with the least loss of filtration charge. It is possible to carry out a physical filtration of said mixture in order to extract deposits corresponding to the dust or similar debris present in said mixture, but also to carry out a physicochemical filtration of said mixture, for example by a wet path capable of dissolving, or even precipitating some of said 30 harmful elements, such as nitric oxides, carbon, dust and other particles of said mixture.

Each vehicle thus equipped treats at least a portion of its gaseous emissions and emitted emissions, which helps to reduce the effect of concentration of said gaseous pollutants and dust in said area, and improve the air breathed by people in the environment of the vehicle, particularly close to heavy traffic lanes. The means for treating the gaseous mixture, a mixture of air, dust and said gaseous pollutant discharges surrounding the vehicle, can still be configured to directly treat the gaseous emissions at their emission, for example by a curtain of fluid, not shown. , projected transversely to the exhaust stream of gaseous discharges downstream thereof. The entire gaseous mixture channeled, for example by a contoured lower skirt suction of the dust raised in rolling, dust emitted and the exhaust gas, can still be treated in this way. Said fluid may comprise products agglomerating said harmful elements, for example partly detergent, able to dissolve some of said harmful elements such as soot and the same dust emitted and driven by the displacement of the vehicle, the resulting deposits being precipitated to be recovered. Such a treatment can be carried out upstream or downstream of the treatment described in the example above, for example by an enclosure adapted to be fixed to the vehicle and comprising a device for driving said mixture into the enclosure, a stage of physical filtration of said mixture entrained in the chamber, for example of cyclonic current type, and a physicochemical filtration stage of the resulting mixture, for example of the spray or fluid-bath type of this mixture, before an external evacuation of the treated mixture of the enclosure.

Said enclosure is preferably shaped to be fixed to a free and convenient place on the vehicle, for example in the trunk or under the trunk of the vehicle, be accessible for its maintenance, for example for the removal of dust and deposits captured during operation . It can be formed in one of the bumper of the vehicle, in particular the rear bumper or be attached to the bumper as above. According to alternative embodiments, the entry of the mixture can still be carried out at the front of the vehicle to be relatively close to the dust and gaseous emissions emitted at the rear of a preceding vehicle in urban traffic, and the outlet of the treated mixture. corresponding to a purified air made at another location of the vehicle, preferably the pedestrian side of the road relative to the direction of movement of the vehicle to allow people to breathe.

The invention also relates to a method for compensating for the dust and gaseous pollutant emissions emitted by a heat engine vehicle comprising a step of capturing at least a portion of the dust and gaseous pollutant emissions emitted by said vehicle in the environment of the vehicle, at any appropriate position of the latter, in a mixture of air, said dust and gaseous pollutants, and treatment of said mixture in order to extract elements harmful to people, and rejection of the treated mixture in the environment said vehicle. Said mixture of air, dust and said waste is advantageously made in a given volumetric proportion, able to allow in connection with the device a fluidic clearance conducive to said extraction of harmful elements. These include adjusting the proportions of each component and their volume treated for each vehicle. The process is necessarily accompanied by maintenance treatment by the person using the vehicle, by the periodic extraction of deposits resulting from the filtration of said harmful elements. The invention thus provides an opportunity to compensate for each vehicle its own gaseous pollutants. 30

Claims (10)

REVENDICATIONS1. Device (1) characterized in that it is adapted to be mounted on a heat engine vehicle (2) for the compensation of polluting gas (3) and dust (4) emissions emitted into the environment of said vehicle, said device comprising means (5, 12) for treating said gaseous pollutant and dust emissions emitted by the vehicle, in the perimeter of the latter, in order to extract elements harmful to the persons. 2. Device according to claim 1, wherein said means (5, 12) are configured to directly treat the gaseous emissions (3, 4) at their emission, for example near their exhaust of the vehicle and / or the rear part. of the vehicle, for example by a fluid curtain projected transversely to the exhaust stream of gaseous discharges downstream thereof. 3. Device according to claim 1 or 2, wherein said means (5, 12) are adapted to treat a mixture of air (11), dust (4) and said gaseous pollutants (3) surrounding the vehicle ( 2). 4. Device according to claim 3, wherein said means (5, 12) are capable of physically filtering said mixture (3, 4, 11) to extract deposits corresponding to the dust or similar debris present in said mixture. 5. Device according to claim 3 or 4, wherein said means are adapted to carry out a physicochemical filtration of said mixture, for example by a clean wet way to dissolve, or even precipitate some of said harmful elements, such as nitric oxides, carbon, dust and other particles of said mixture. 6. Device according to one of claims 3 to 5, wherein said means comprises an enclosure (5) adapted to be fixed to the vehicle (2) and comprising a drive device (10) of said mixture in the enclosure, a a physical filtration stage of said mixture entrained in the chamber, for example of the cyclonic current type, and, optionally, a physicochemical filtration stage of the resulting mixture, for example of the spray or fluid-bath type of this mixture, before a external discharge (13) of the treated mixture of the enclosure. 7. Device according to claim 6, wherein said enclosure (5) is formed in one of the bumper (6) of the vehicle, in particular the rear bumper or is attached to the bumper. 8. Device according to claim 6 or 7, wherein a skirt (16) is associated with the enclosure (5), in particular extending along said bumper (6) in the lower part of the vehicle, being configured to confine said mixture on the skirt for suction. 9. Kit for mounting on a thermal engine vehicle of the device according to any one of the preceding claims, comprising an enclosure (5) adapted to be fixed to the vehicle (2), comprising a drive device (10) of said mixture ( 3, 4, 11) in the chamber, a filter element (12) of said mixture entrained in the chamber, a removable dust-collecting tank (14) resulting from said filtration, a skirt (16) for confining said mixture. for training in the enclosure and a conduit (13) for external discharge of the treated mixture of the enclosure. 10. A method for compensating for dust (4) and gaseous pollutant emissions (3) emitted by a vehicle (2) with a combustion engine comprising a step of capturing at least part of the dust and gaseous pollutant emissions emitted by said vehicle in the vehicle. environment of the vehicle, in a mixture of air (11), said dust (4) and gaseous pollutants (3), and treatment (12) of said mixture in order to extract elements harmful to people, and rejecting (13) the treated mixture into the environment of said vehicle.