EP3911557A1 - Système pour améliorer l'aérodynamique d'un véhicule terrestre, en particulier d'un poids lourd ou analogue - Google Patents

Système pour améliorer l'aérodynamique d'un véhicule terrestre, en particulier d'un poids lourd ou analogue

Info

Publication number
EP3911557A1
EP3911557A1 EP20700294.0A EP20700294A EP3911557A1 EP 3911557 A1 EP3911557 A1 EP 3911557A1 EP 20700294 A EP20700294 A EP 20700294A EP 3911557 A1 EP3911557 A1 EP 3911557A1
Authority
EP
European Patent Office
Prior art keywords
vehicle
inclination
deflector
generators
vortex generators
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20700294.0A
Other languages
German (de)
English (en)
Inventor
Christoph EGARTER
Original Assignee
Eghi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eghi filed Critical Eghi
Publication of EP3911557A1 publication Critical patent/EP3911557A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D35/00—Vehicle bodies characterised by streamlining
    • B62D35/001—For commercial vehicles or tractor-trailer combinations, e.g. caravans
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/82—Elements for improving aerodynamics

Definitions

  • the present invention relates to a system for the aerodynamic improvement of a road vehicle, in particular of a truck or the like.
  • the aerodynamic characteristics of a vehicle are among the most important characteristics for fuel consumption. For vehicles that travel a large number of kilometers in particular, even minor optimization can bring great benefits. Saving fuel means reducing costs. The reduction also leads to a lower environmental impact and can also bring tax advantages.
  • US 8851554 describes a composition for reducing air resistance, which can be mounted on a moving vehicle or other object.
  • the system described includes ventilation openings and at least a shell of a network of flexible material that moves from an active position to a second inactive position and vice versa.
  • the envelope is also designed in such a way that at least one outer surface is provided, which is designed in such a way that the effects of the dragging are reduced.
  • the system described can also be combined with channels that make it possible to direct the air flow into the envelope.
  • the flexible elements cause problems during use because they create instability in the vehicle. In addition, their movements are difficult to predict and / or due to the movements, the aerodynamic effects can vary and the material is exposed to damage and therefore requires continuous maintenance. From US 8 770 649 a system for
  • Vortex generators which generate small vortices. These small air vortices described create a long train.
  • Each of the front ex generators (vortex) has one or more channels for the air flow, which force the air flow to flow through these channels.
  • the system described has a number of problems, in particular the channels used dirty or filled with dirt, and therefore they are not very useful in everyday use on land vehicles and are also cumbersome and complicated to assemble. Furthermore, the system requires the so-called Tunne 1 effe kt in order for the vortex generators to become effective.
  • GB 250 83 57 describes a removable device for increasing the aerodynamic efficiency of a vehicle.
  • the device described has elements which extend the side body on three sides of the L according to the shape of the country. Vo rt e x g e n e r a t o r e n can be placed on these extensions.
  • the device described does not teach any change in the outer bodywork in order to change the air flow, in particular to change the boundary layer of the air flow.
  • the preconditions described here do not protrude from the bodywork to influence the air flow and therefore have a different technical effect.
  • US 6959958 describes a method and a device for reducing the air resistance for bodies of vehicles that drive on motorways and the like.
  • these trucks may contain elements to improve the aerodynamic effects at the rear of the vehicle.
  • the system described Vo rtex generators which are arranged on the truck or on the vehicle trailer. The system described does not describe any
  • US Pat. No. 7,255,387 describes improved devices for reducing aerodynamic effects, for improving vehicle performance and for reducing fuel consumption.
  • the described configuration includes several surfaces that are arranged on the outer surface of a vehicle. These surfaces are dimensioned according to the thickness of the vehicle casing and their length is at least five times the thickness of the vehicle casing. Any of these surfaces can create vortices.
  • the vortex generators described in the publication US Pat. No. 7,255,387 only serve to change the lateral air flow to the vehicle and to facilitate a more stable keeping of the track. They are not used to reduce the rear surface area of the vehicle, on which negative pressure is applied and thus that of the driver is generated. This way the publication is reduced not air resistance, but creates greater resistance and consumption increases.
  • US 7 008 004 describes a device for modifying the air flow downstream of a vehicle by means of elements which are arranged at the end of the vehicle, for example trucks, which form the rear of the truck and which produce an air flow which is substantially parallel to the Longitudinal axis of the vehicle is.
  • the rear of the vehicle is extended without side fronts.
  • the US 2017274941 describes a system for modifying the air flow, with fore x g e n e r a t o r e n attached to the inclined surfaces. There is no description of a combination of the position of the front, the inclination of the surfaces and the layers of air, which influence the front of the door.
  • US 2011210510578 also teaches a system for modifying the air flow. Here, too, there is no combination of the position of the forwards, the inclination of the
  • the object of the present invention is to provide a system for land vehicles, in particular trucks or the like, which improves the aerodynamic properties of the vehicle by reducing the fuel and / or energy consumption, or a kit for modifying a land vehicle is added to to improve the aerodynamic properties.
  • This task is accomplished by a system for countries, especially trucks, buses as well
  • the inventive system for land vehicles particularly trucks, buses, trailers, and semi-trailers, includes an exterior surface of the vehicle and at least one rear surface, a deflector, with an inclination toward the front surface, and a series of Vortex generators arranged on the surfaces, characterized in that the rear surface, the deflector, for
  • Vehicle center is inclined between 5 ° and 30 ° with respect to the front outer surface of the vehicle, this inclination change is denoted by a and in which the vortex generators are arranged on the outer surface to a with a maximum spacing of 250 mm from the
  • the forwards can be arranged in a converging manner (running towards each other) and / or divergent (outside 1) and in parallel with each other.
  • the protrusion of the front panels between 1 cm and 15 cm from the adjacent surfaces enables them to change the air flow and in particular the boundary layer of the air flow.
  • this modification is particularly advantageous because it is combined with the deflectors or the change in the outer surface of the body.
  • the system described here can also be sold and installed as a conversion kit, in which bodyworks 1 are added at the rear of the land vehicle, for example a truck, and an existing vehicle is converted in this way.
  • These surfaces / L ei tb 1 eche / D ef 1 ectors are inclined at an angle of inclination (alpha) between 5 ° and 30 ° to the center of the vehicle.
  • the front ex generators can already be positioned on this additional surface or fastened near the additional surfaces with a maximum spacing of 250 mm on the outer surfaces of the vehicle.
  • the deflector can advantageously be dismantled. In this way, quick disassembly is possible when not used and / or replaced.
  • the inclined deflector can be formed both from a rigid material and from a flexible material.
  • the rear surface of the deflector consists of a single part and is formed together with the outer surface of the front land vehicle or is integrated into its structure.
  • the deflectors are advantageously arranged on at least two sides of the vehicle.
  • the land vehicle can have a tubular or curved cylindrical body, for example tank trucks, and therefore the deflecting element can be designed in a curved, circular or partially circular shape. The inclination of the detector 1 emen ts is always directed towards the center of the vehicle.
  • the front ends are not all the same size, but vary in order to better regulate the environment s 1 u f t s t r om.
  • the deflectors can provide a configuration for / storage
  • the system according to the invention can be built as a conversion kit to be mounted on existing vehicles.
  • This kit can consist of several
  • the vortex generators are advantageously arranged or integrated on the surrounding surfaces.
  • FIG. 1 shows a perspective view of a truck with a system according to the invention
  • FIG. 2 shows a perspective view of a truck with a system according to the invention in a second embodiment
  • FIG. 3 shows a plan view of a truck with a system according to the invention in the first embodiment
  • FIG. 4 shows a detail of a top view of a truck with a system according to the invention in the first embodiment
  • FIG. 5 shows a detail of a top view of a truck with a system according to the invention in the second embodiment for the embodiment
  • Figure 6 shows a perspective
  • FIG. 7a shows a graphical representation of the air flow only with baffles / deflectors.
  • FIG. 7b shows a graphic representation of the behavior of the air with deflectors / baffles in combination with vortex generators.
  • FIG. 8 shows a rear perspective view of a truck with a system according to the invention in a further embodiment in an E xp 1 o s i o n s da r s t e 11 un g,
  • FIGS. 9 and 10 show a perspective view of trucks with a system according to the invention in further embodiments.
  • FIG. 11 shows a perspective side view of a bus with a system according to the invention, which forms a charging box, and
  • FIG. 12 shows a system according to the invention with various designs for the
  • a land vehicle in particular a truck, is designated by the reference number 100.
  • This land vehicle 100 has lateral outer surfaces 101, which can form the loading space, for example.
  • the air flows in particular the air vortices of the rear lane of a truck, in particular a truck or the like, are very important with regard to the overall aerodynamic behavior of the vehicle.
  • deflectors which are connected to the land vehicle 100 and / or form a single surface with the side walls of the truck 101.
  • the deflectors 110 are opposite the center of the
  • the deflectors 110 are inclined with an Alpha (ex) angle of inclination between 5 ° and 30 ° to the central longitudinal axis of the vehicle. In this way, the footprint of the vehicle is reduced, which reduces the air resistance depending on the track of the rear vertebrae.
  • the front side surfaces 101 and the deflector 111 are formed by a single element.
  • Vo rt e x g e n e r a t o r e n 111 are arranged on the outer surface in an area, this area goes from 250 mm before the change in inclination and 250 mm after the change in inclination.
  • These forwards 111 or parts of these forwards 111 are inclined with respect to the longitudinal axis of the truck.
  • the ß-inclination of the front axles 111 or parts of these generators 111 can have a preferably curved wing shape between 2 ° and 50 ° with respect to the longitudinal axis of the land vehicle 100.
  • the front devices 111 are designed in such a way that they are between 1 cm and 15 cm from the surrounding surface. In this way, the front members 111, the surrounding area and the boundary layer in particular can be changed more effectively.
  • the vortices downstream of the land vehicle 100 which were only realized with deflectors 110, are still turbulences 120, as a result of which a vehicle has a greater energy consumption, in particular fuel.
  • FIG. 7b shows the air flow downstream of an aircraft 100 with deflectors 110 and Vo rtex generators 111 formed in accordance with the invention.
  • region 121 there is a reduction in the turbulence, which reduces the fuel consumption of the country 100.
  • FIG. 8 shows a / a kit for modifying a land vehicle 100, which can be formed by various forms of deflectors 110, on which the front ends 111 are arranged.
  • the deflectors 110 can be detachably connected to the land vehicle, and predetermined breaks 1 (breakages 11) can also be provided, which are provided for safety in the event of an accident.
  • the directors / detectors which form the rear of the truck can be shaped so that in the event of an accident they can knock or otherwise hit L and f ah witness absorb.
  • FIG. 9 shows a land vehicle 100 that moves in direction 112 and has a deflector 110 according to the invention at the rear of the vehicle, which is integrated in the structure of the vehicle and which in FIG the vortex generator 111 arranged according to the invention lies in the predefined area.
  • FIG. 10 shows another land vehicle, which has a tubular loading area, For example, a liquid container, and on which a deflector 110 is arranged with the Vort ex generators 111 according to the inventions.
  • the deflector 110 inclined toward the center of the vehicle forms an a-inclination angle with respect to the preceding surface.
  • Deflectors create an additional loading zone downstream of the vehicle.
  • the deflectors may be arranged to form a box 115 downstream of a country 100, such as a bus. Luggage, skis or other bulky items can be loaded in this box.
  • Land vehicle can be formed from a tubular or curved cylindrical body, and therefore the deflecting element can be formed in a curved, circular or t e i 1 k r e i s form.
  • the inclination of the D e f 1 e c t o r e 1 emen t s is always directed towards the center of the country.
  • FIG. 12 shows a system according to the invention, in which a series of precedents 111 are shown, in particular one
  • Vortex generator having a first part purple which has no inclination with respect to the longitudinal axis of the vehicle, the second part 111b having an inclination- ⁇ (beta) with respect to the longitudinal axis of the vehicle between 2 ° and 50 ° and wherein the last part of the vortex generators 111c a minimum
  • a de f 1 e c t o r e 1 eme n t can be arranged between the tractor and / or between two trailers, which prevents the air flow between these two vehicles.
  • This deflection has a synergistic effect in the system according to the invention, since the air currents flowing through these slots produce lateral turbulence, which can have a negative effect on the air flow at the end of the vehicle, by limiting the effects of the system according to the invention. Since they generate turbulence on the side walls of the vehicle due to the lateral air currents, a deflector is arranged between two vehicles, in particular trucks, buses and trailers, in particular
  • the system with the change and the vortex generators can also be attached to the underside of the vehicle.
  • the vortex generators and the inclination change are therefore located on the underside of the vehicle.
  • openings can be arranged at a maximum distance of 250 mm from the incline change.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

L'invention concerne un système pour améliorer l'aérodynamique d'un véhicule terrestre (100), en particulier de poids lourds, de bus et de remorques, le système comprenant une surface externe (101) qui est celle du véhicule et une surface arrière (110), dans la direction de conduite (112), qui est un déflecteur présentant une inclinaison par rapport à la surface avant et une série de générateurs de tourbillon (111) agencés sur les surfaces (101, 110). Selon l'invention, la surface arrière (110), le déflecteur, est inclinée par rapport au milieu du véhicule (100), d'un angle compris entre 5° et 30° par rapport à la surface externe (101) avant du véhicule, et les générateurs de tourbillon (111) sont agencés sur la surface externe à une distance maximale de 250 mm de la modification d'inclinaison entre les surfaces externes (101) latérales avant du véhicule et la surface arrière de véhicule (110). Les générateurs de tourbillon (111) de la surface externe (101) avant du véhicule et/ou les générateurs de tourbillon (111) positionnés sur la surface arrière de véhicule (110), les générateurs de tourbillon (111) ou des parties de ces générateurs de tourbillon (111) présentent une inclinaison (β) par rapport à l'axe longitudinal de véhicule comprise entre 2° et 50° et les générateurs de tourbillon font saillie par rapport aux surfaces adjacentes d'une longueur comprise entre 1 cm et 15 cm.
EP20700294.0A 2019-01-14 2020-01-13 Système pour améliorer l'aérodynamique d'un véhicule terrestre, en particulier d'un poids lourd ou analogue Withdrawn EP3911557A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102019000000543A IT201900000543A1 (it) 2019-01-14 2019-01-14 Sistema per il miglioramento aerodinamico di un veicolo terrestre in particolare di un camion o simile
PCT/EP2020/050659 WO2020148216A1 (fr) 2019-01-14 2020-01-13 Système pour améliorer l'aérodynamique d'un véhicule terrestre, en particulier d'un poids lourd ou analogue

Publications (1)

Publication Number Publication Date
EP3911557A1 true EP3911557A1 (fr) 2021-11-24

Family

ID=66166436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20700294.0A Withdrawn EP3911557A1 (fr) 2019-01-14 2020-01-13 Système pour améliorer l'aérodynamique d'un véhicule terrestre, en particulier d'un poids lourd ou analogue

Country Status (5)

Country Link
US (1) US20220009565A1 (fr)
EP (1) EP3911557A1 (fr)
CN (1) CN113226899A (fr)
IT (1) IT201900000543A1 (fr)
WO (1) WO2020148216A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113602369A (zh) * 2021-02-10 2021-11-05 唐腊辉 一种交通工具用超声波气流切割降阻装置
TWI779851B (zh) * 2021-09-28 2022-10-01 劉瑞昌 可增加前推力進而抵消部分風阻之車身結構
AT524871B1 (de) 2021-11-24 2022-10-15 Wolfgang Hermann Sallaberger Vorrichtung zur Strömungswiderstandsreduktion eines Landfahrzeuges

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Also Published As

Publication number Publication date
IT201900000543A1 (it) 2020-07-14
CN113226899A (zh) 2021-08-06
WO2020148216A1 (fr) 2020-07-23
US20220009565A1 (en) 2022-01-13

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