• 专利附录
  • 专利说明
  • 权利要求
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  • 优先权
    • 专利摘要:
    Starting/stopping system for a car by mechanical accumulator (1), of the type that incorporate a high-speed inertia flywheel (50) and that consists essentially of: To. A tree (10), of the flywheel (50); B. A clutch (20) of the flywheel (50); C. A gear (30), for mechanically coupling the shaft (10) to the shaft (60); D. A starter connector (40), type bºndix; And. A high-speed inertia flywheel (50) with magnetic output, vacuum, which lacks a transmission shaft, and whose purpose is to store mechanical energy in a kinetic manner; F. A shaft (60), of the free wheel (70); G. A free wheel (70); H. A stop/run connector (80), type bºndix. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2620674A1
    申请号:ES201601105
    申请日:2016-12-22
    公开日:2017-06-29
    发明作者:Juan Carlos Sáenz-Díez Muro；Emilio Jiménez Macías；Julio Blanco Fernández；Eduardo MARTÍNEZ CÁMARA；Mª Mercedes PÉREZ DE LA PARTE；Juan Ignacio LATORRE BIEL；Juan Manuel Blanco Barrero；Jorge Luis GARCÍA ALCARAZ
    申请人:Universidad de La Rioja；
    IPC主号:
    专利说明:

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    DESCRIPTION
    Start / stop system for a car by mechanical accumulator.
    Object and sector of the technique to which the invention refers
    The present invention relates to a start / stop system for cars by mechanical accumulator.
    The object of the invention is to propose an improved system for controlling the start / stop maneuver of a car, using a high-speed flywheel with magnetic output, which operates in a vacuum and lacks a transmission shaft.
    The invention is located in the technical sector of automotive engineering, and more specifically in that related to electro-mechanics of automobile vehicles.
    General and closest prior state of the art
    By "start / stop" operating mode is meant an automatic disconnection and a restart of an internal combustion engine at operating temperature, for example, when stopping at a traffic light.
    The start / stop system was invented by the Bosch company and has subsequently been developed by many brands. The purpose of this technology is to reduce: fuel consumption, exhaust emissions and noise.
    Start-stop systems are now widely known for automobiles and are also used in series production vehicles. These systems are characterized by the fact that the car's engine is disconnected in the stopping phases, for example, when the vehicle is put into neutral and lifts the clutch foot and:
    - the car is stopped or running at a speed of less than 3 km / h;
    - the direction is not turned, if so, it could be a parking maneuver;
    - the battery has enough charge to restart;
    the engine shuts down, thereby stopping fuel consumption; As soon as the driver steps on the clutch to engage the gear, the system starts the engine again.
    According to the European Conduction Cycle (NEFZ), the average fuel economy with this system is 5%.
    The start / stop systems for cars usually use electro-chemical batteries that, due to their chemical process, are very slow in the loading and unloading process, and if they try to reduce the time their performance drops to values below 30%.
    A mechanical accumulator based on a flywheel allows storing mechanical energy in the form of kinetic energy. The flywheels allow the energy transfer to be very fast compared to traditional electro-chemical batteries, which require a certain time of loading and unloading.
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    The present invention recommends using a high-speed flywheel with magnetic output, which operates under vacuum and lacks a transmission shaft, comprising a rotating mass arranged to rotate in solidarity with a drive shaft, acting as a brake in the deceleration of the vehicle and as a generator of mechanical energy in the start-up of it.
    It is intended to store the lost energy of the braking of the vehicle at the stops to then use said stored energy to start the vehicle.
    A flywheel to use in a car is of interest to be high speed in order to reduce its size and lighten its mass, being contained inside a housing in which the vacuum is made in order to reduce the losses of energizes by self-consumption in the form of heat by friction.
    Different types of devices and procedures for controlling an internal combustion engine in a start / stop mode of operation are known in the state of the art. Examples of these systems are found in:
    Publication number: ES 2214087 B1, title: "Procedure to control the start / stop maneuver of a car with an automated clutch", presentation date: 18.10.1999;
    Publication number: ES 2289218 T3, title: "Procedure and control device for the control of an internal combustion engine in a start / stop operating mode", presentation date: 09.09.2003;
    Publication number: ES 2326826 T3, title: "Control device of an automatic start / stop system", date of presentation: 22.09.2005;
    Publication number: ES 2533379 T3, title: "Procedure for the operation of a start-stop system of a car and a car", presentation date: 14.09.2012;
    In the state of the art closest to the device claimed in this application we have the following document:
    In the patent document called D01 with publication number: ES 2366494 T3, title: "High speed flywheel", presentation date: 28.03.2008, a high speed flywheel is described for use in vehicles.
    Technical problem raised
    The prior art systems present a problem that focuses primarily on the following aspects:
    X The automobile start / stop systems using electro-chemical batteries, due to its chemical process, are very slow in the loading and unloading process, and if it is intended to reduce the time its performance drops to values lower than
    30%;
    X The flywheels that operate in an air housing suffer high friction losses in addition to having a very low energy density;
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    X Vacuum flywheels equipped with a transmission shaft require a dynamic joint between the housing and the shaft, in order to allow the vacuum to be maintained inside the housing, said joints being inadequate because they reduce performance, they are a source of failure and require high maintenance;
    X Start / stop systems by means of a flywheel, do not allow the loading / reloading of said flywheel during braking cycles;
    X The start / stop systems using the flywheel do not allow the flywheel to be disconnected when the start / stop system cancellation order is issued.
    Technical advantage provided by the invention
    The device (1) that the invention advocates fully resolves the problem described above, in each and every one of the different aspects discussed and detailed below:
    X Allows the transfer of energy from a source of motive energy to the mechanical accumulator and from the accumulator to said source virtually instantaneously, exclusively limited by the dimensioning of its elements;
    X The flywheel operates in a vacuum housing and can operate at high speeds, with high energy density, and almost zero friction losses;
    X There is no tree that crosses the housing in which the vacuum has been made, so no dynamic meeting is required; the transmission of mechanical power is done by magnetic output;
    X Allows the loading / reloading of the flywheel in the braking cycles;
    X Allows disconnection of the flywheel when the cancellation order is issued
    of the start / stop system.
    Brief description of the figures
    To complement the description and in order to help a better understanding of the features of the invention, a set of figures with an illustrative and non-limiting character is accompanied as an integral part of said description.
    Glossary of references
    (01) Internal combustion engine;
    (02) Toothed crown, of the flywheel of motor inertia;
    (03) Drive tree;
    (1) Start / stop system for a car by mechanical accumulator;
    (10) Tree, flywheel;
    (20) Clutch, flywheel;
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    (30)
    (40)
    (401)
    (402)
    (403) (50)
    (501)
    (5011)
    (50111)
    (50112)
    (50113)
    (5012)
    (502)
    (5021)
    (5022)
    (5023)
    (503)
    (504) (60)
    (70)
    (80)
    (801)
    (802)
    Clutch actuation, (reception of the data by communications bus of the vehicle control unit);
    Gear;
    Boot connector, Bendix type;
    Start connector action (reception of data by communications bus of the vehicle control unit);
    Pinon boot;
    Electro-magnetic starter relay;
    High speed flywheel (under vacuum, without transmission shaft and with magnetic output);
    Planetary speed reducer with magnetic output;
    Magnetic crown;
    Body;
    Accommodations;
    Magnets of the crown;
    Planetary gear;
    Magnetic coupling wheel;
    Drive shaft, flywheel;
    Magnets, of the wheel;
    Bulon coupling;
    Inertia flywheel speed (rotation of the magnetic crown of the flywheel output, sending the data by communications bus to the vehicle control unit);
    Inductive speed sensor;
    Tree, freewheel;
    Free wheel;
    Stop / start connector, Bendix type;
    Actuation stop / start connector, (reception of the data by communications bus of the vehicle control unit);
    Pinon stop / run;
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    (803) Electro-magnetic stop / start relay;
    (90) Brake pedal sensor;
    (900) Brake pedal;
    (901) Pedal sensor line;
    (902) Fixed element;
    (903) Rotating element;
    (904) Variable resistance;
    Glossary of terms
    Bendix is called a type of gear mechanism used in the starter of internal combustion engines; the Bendix device allows a pin of the electric starter to automatically engage or disengage with the flywheel of the combustion engine when the driver starts by turning the key or when the engine starts, respectively; His name honors its inventor Vincent Hugo Bendix.
    Figure 1 (Fig. 01) .- shows a schematic view of a longitudinal section of a start / stop system for a car by mechanical accumulator (1).
    Figure 2 (Fig. 02) .- shows a schematic view, in detail, of a longitudinal section of a start / stop system for a car by mechanical accumulator (1).
    Figure 3 (Fig. 03) .- shows a section, profile, and elevation view of a magnetic crown (5011).
    Figure 4 (Fig. 04) .- shows another view in section, profile, and elevation of a magnetic crown (5011).
    Figure 5 (Fig. 05) .- shows a view of a longitudinal section, and a detailed view, of a high speed flywheel (50).
    Figure 6 (Fig. 06) .- shows an elevation view of a planetary speed reducer with magnetic output (501).
    Figure 7 (Fig. 07) .- shows a section, profile, and elevation view of a magnetic coupling wheel (502).
    Figure 8 (Fig. 08) .- shows a section, profile, assembly view of a magnetic coupling wheel (502) on a high speed flywheel (50).
    Figure 9 (Fig. 09) .- shows a schematic view of the operating position of the flywheel load option (50) of a start / stop system for a car by mechanical accumulator (1).
    Figure 10 (Fig. 10) .- shows a schematic view of operation in the starting position of the internal combustion engine (01), of a start / stop system for a car by means of mechanical accumulator (1).
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    Figure 11 (Fig. 11) .- shows a schematic view of the operation in the start / stop override position of a start / stop system for a car by mechanical accumulator (1).
    Figure 12 (Fig. 12) .- shows a profile and elevation view of a pedal sensor (90).
    Detailed description of the invention and detailed exposure of a preferred embodiment of the invention
    A preferred embodiment of the invention is described in detail, among the different possible alternatives, by enumeration of its components as well as its functional relationship based on references to the figures, which have been included, by way of illustration and not limitation, according to principles of the claims.
    Figure 1 (Fig. 01) .- shows a schematic view of a longitudinal section of a start / stop system for a car by mechanical accumulator (1); Fig. 01 illustrates a preferred location of the invention in relation to the toothed crown (02) of the driving inertia flywheel, of the output of a drive shaft (03) of an internal combustion engine (01).
    Figure 2 (Fig. 02) .- shows a schematic view, in detail, of a longitudinal section of a start / stop system for a car by mechanical accumulator (1); in the Fig. 02 the main parts that include as well as the functionality of the same can be appreciated:
    to. a tree (10), of the flywheel (50), whose function is to transmit an angular mechanical power along its axis;
    b. a clutch (20), of the flywheel (50), whose functionality is when it is electrically excited through the clutch actuation (201), reception of the data by communications bus of the vehicle control unit, allow the passage of mechanical power angular; in case of non excitation does not allow the passage;
    C. a gear (30), to mechanically couple the tree (10) to the shaft (10);
    d. a starter connector (40), Bendix type, whose functionality is when electrically excited through the actuation starter connector (401), reception of the data by communications bus of the vehicle control unit, engage with the gear ring (02), of the flywheel, in order to start the internal combustion engine (01); in case of no excitation, no gearing occurs;
    and. a high speed flywheel (50) with magnetic output, in vacuum, which lacks a transmission shaft, and whose purpose is to store mechanical energy in kinetic form, which contains:
    - an inductive speed sensor (504) for transmitting the output shaft speed through a flywheel speed bus (503), sending the data by communications bus to the vehicle control unit;
    - a planetary speed reducer with magnetic output (501), composed of a magnetic crown (5011) mounted on a planetary gear (5012) and formed by a plurality of magnets (50113) embedded in housings (50112), oriented radially according to an equidistant and circumferential disposition,
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    arranged in a body (50111) so that the orientation of the polarity of each magnet is inverse to the orientation of the polarity of its adjacent magnets;
    - a magnetic coupling wheel (502) for the captation and delivery of mechanical energy, formed by a plurality of magnets (5022) arranged in their respective housings, radially oriented according to an equidistant and circumferential arrangement, so that the orientation of the The polarity of each magnet is inverse to the orientation of the polarity of its adjacent magnets and that it contains a coupling pin (5023) and a drive shaft (5021);
    and in which the magnetic coupling wheel (502) magnetically sympathizes with the magnetic crown (5011) by placing them facing the poles of their opposite magnets, and the number of magnets (5022, 50113) of each should be even, being preferably made of neodymium alloy, iron and boron (Nd2Fe14B) coated with a nickel layer to protect them from corrosion.
    A flywheel of inertia, therefore, is of interest that it is of high speed in order to reduce its size, being contained inside a housing in which the vacuum is made in order to reduce energy losses by self-consumption in form of heat by friction. By measuring with a sensor the current angular velocity (wx) of a flywheel, we can calculate its cumulative kinetic energy (Ecx), in%, using the following expression:
    image 1
    ; known its nominal angular velocity (wn), in rad / s or in rpm.
    The so-called nominal operating zone, which is an area where the flywheel delivers a constant power equal to its nominal power, includes the range of speeds between:
    - the nominal angular velocity (wn);
    - the current angular velocity oox = oon, in which the flywheel has an accumulated kinetic energy (Ecx) of 50%.
    Energy required to start an internal combustion engine (01)
    The energy required to start an internal combustion engine (01) depends on its characteristics, as well! as of the type of vehicle. Analyzed the consumption of an electric motor used in the starting of an average vehicle, we obtain:
    P = V • I = 12 ■ 150 = 1,800 W
    This power must be supplied in a time of 1 second to guarantee the ignition of the internal combustion engine (01), therefore we will have:
    E = P ■ t = 1,800 ■ 1 = 1,800 J
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    Considering, for the reason described in the previous paragraph, a double kinetic energy accumulation of the necessary one, we will have:
    E = 2 1,800 J = 3,600 J
    Finally, if we want to have energy for 10 consecutive starts without being able to reload the steering wheel, we will have:
    E = 10 ■ 3,600 J = 36,000 J = 3.6 104 J
    The optimal sizing of an inertia flywheel with a geometric shape of solid steel disk of radius (R), length (L), and angular rotation speed (w) has been modeled in order to be able to accumulate the necessary energy to perform the start / stop procedure on a vehicle.
     Steel      Ec 3.60E + 04 J
     6  7800 kg / m3
     1 0 i max  3.72E + 07 N / m3 U) 1084.11 rad / s
     ■ M  0.25 n 10352.50 rpm
     ! R  0.10 m M 12.25 kg
     'L  0.05 m
     • one  0.06126 kg / m2
    Note that we only need a disc with a radius (R) of 10 cm, a length (L) of 5 cm, a turning speed of about 10,353 rpm, and the steering wheel has a weight of 12.25 kg.
    A high-speed flywheel (in vacuo, without transmission shaft, but with induction output) is described in the invention patent application, with application number: P201600535, and bearing the title "Mechanical accumulator by means of a flywheel. inertia ", whose holder is the University of La Rioja;
    F. a tree (60), of the freewheel (70), whose function is to transmit an angular mechanical power along its axis;
    g. a freewheel (70), whose function is to allow the power coming from the driving axle, that is to say the driving axle (03), to move the resistant axle, the axle (60), and not vice versa; that is to say, it disengages both axes when the resistant shaft rotates at more revolutions than the drive shaft;
    h. a stop / start connector (80), Bendix type; whose functionality is when it is not electrically excited through the actuation stop / run connector (801), reception of the data by communications bus of the vehicle control unit, engage with the gear ring (02), of the driving inertia flywheel, with the purpose of loading the flywheel (50) preferably at the stop (action on the brake pedal sensor (90)), although it is also possible in the driving regime; in case of excitation, the disengagement occurs.
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    Figure 3 (Fig. 03) .- shows a section, profile, and elevation view of a magnetic crown (5011); in Fig. 03, in the left view, a section can be seen, in profile, in which a plurality of magnets (50113), of the crown, are arranged in their respective housings (50112); in the right view, in elevation, a body (50111) and the plurality of housings (50112) can be seen.
    Figure 4 (Fig. 04) .- shows another view in section, profile, and elevation, of a magnetic crown (5011); in Fig. 04, in the left view, a section can be seen, in profile, and in the right view, in elevation, of the crown complete with the plurality of magnets (50113) housed in their respective housings (50112).
    Figure 5 (Fig. 05) .- shows a view of a longitudinal section, and a detailed view, of a high speed flywheel (50); in Fig. 05, in the right view a longitudinal section of the flywheel is shown whose main feature recommended by the invention is that it lacks a transmission shaft, providing for the capture and delivery of the mechanical energy of a reducer planetary speed with magnetic output (501).
    Figure 6 (Fig. 06) .- shows an elevation view of a planetary speed reducer with magnetic output (501); in Fig. 06, the assembly of the magnetic crown (5011) in a planetary gear (5012) is shown; The crown rotates at a reduced angular velocity compared to the high rotational speed of the inertial disc.
    Figure 7 (Fig. 07) .- shows a sectional view, profile, and elevation of a magnetic coupling wheel (502); in Fig. 07, in the left view, an elevation of the wheel is shown in which a plurality of magnets (5022), of the wheel, arranged in their respective housings (analogously as in the magnetic crown ( 5011), Fig. 03-Fig. 04); in Fig. 07, in the right view, a coupling bolt (5023) and a drive shaft (5021), of the flywheel can be seen.
    Figure 8 (Fig. 08) .- shows a sectional view, profile, of assembly of a magnetic coupling wheel (502) on a high speed flywheel (50); in Fig. 08, the assembly of the magnetic coupling wheel (502) on the high speed flywheel (50) is shown; In this way, a drive shaft (5021) is available to transmit magnetically connected mechanical power.
    Figure 9 (Fig. 09) .- shows a schematic view of the operating position of the flywheel load option (50) of a start / stop system for a car by mechanical accumulator (1); in Fig. 09, this procedure consisting of:
    - The toothed crown (02), of the flywheel, is in angular motion with the capacity to transmit mechanical power from the drive shaft (03) of the internal combustion engine (01);
    - The stop / start connector (80), Bendix type, is de-energized and therefore engaged with the gear ring (02);
    - The freewheel (70) arranged to transmit mechanical power to the shaft (60);
    - The gear (30) rigidly coupled to the shaft (60);
    - The clutch (20) is excited when the load / reload order of the high speed flywheel (50) occurs (preferably at the stop, acting on
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    the brake pedal sensor (90), although it is also possible in the driving regime, programming eg that when the flywheel accumulates an energy lower than a setpoint the reload is ordered);
    - Finally, the shaft (10) transmits the mechanical load / reload power to the high speed flywheel (50).
    Figure 10 (Fig. 10) .- shows a schematic view of the operation in the starting position of the internal combustion engine (01), of a start / stop system for a car by means of mechanical accumulator (1); in Fig. 10, this procedure consisting of:
    - The starter connector (40), Bendix type, is excited and therefore engaged with the crown gear (02);
    - The clutch (20) is excited when the start command of the internal combustion engine (01) occurs; This order is generated by any start / stop procedure of the current state of the art;
    - Finally, the shaft (10) supplies the mechanical power from the high speed flywheel (50).
    Figure 11 (Fig. 11.- shows a schematic view of the operation in the start / stop override position of a start / stop system for a car by means of mechanical accumulator (1); in Fig. 11, it is shown graphically in thick line said procedure consisting of:
    - The stop / start connector (80), Bendix type, is excited and therefore disengaged from the gear ring (02);
    This procedure is required when the start / stop system cancellation order is given and therefore no load reloading of the high speed flywheel is required (50).
    Figure 12 (Fig. 12) .- shows a view in profile and elevation of a pedal sensor (90), in which it can be seen that on a brake pedal (900), of any vehicle of the state of the art, there is a rotating element (903), which when stepping with the foot describes a turning movement with respect to a fixed element (902), and when released returns to its initial state by means of a spring, and in that turning movement It acts on the axis of a variable resistor (904), being connected by a pedal sensor line (901) with the vehicle control unit. If we express the ohmic value of the variable resistance (Rv) as a percentage, when the pedal sensor (90) is not pressed Rv = 0%, and when Rv = 100% is fully depressed. During normal driving of the vehicle when the driver depresses the brake pedal (900), before operating the hydraulic brake system, the pedal sensor (90) will start it, starting the mechanical accumulation in the high-speed flywheel ( 50) during braking speed reduction and therefore generating a force opposing the movement, that is to say brake; If this braking force is not enough instinctively the driver will continue to apply the brake, in this case the normal hydraulic brake system of the vehicle will act.
    A pedal sensor (90), for wind power generation, is described in the patent application for invention, with publication number ES-2540379, and which carries by title
    "Wind regenerative device and procedure for vehicles", whose owner is the University of La Rioja.
    权利要求:
    Claims (4)
    [1]
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    1. Start / stop system for a car by means of a mechanical accumulator (1), of the type that incorporates a high speed flywheel (50) and is characterized by:
    to. a first tree (10), of the flywheel (50), whose function is to transmit an angular mechanical power along its axis;
    b. a clutch (20), of the flywheel (50), whose functionality is when it is electrically excited through the clutch actuation (201), reception of the data by communications bus of the vehicle control unit, allow the passage of mechanical power angular; in case of non excitation does not allow the passage;
    C. a gear (30), to mechanically couple to the first tree (10) a second tree
    (60);
    d. a starter connector (40), Bendix type, whose functionality is when electrically excited through the actuation starter connector (401), reception of the data by communications bus of the vehicle control unit, engage with the gear ring (02), of the flywheel, in order to start the internal combustion engine (01); in case of non-excitation, the gear does not occur;
    and. a high-speed flywheel (50) with magnetic output, in vacuum, which lacks a transmission shaft, whose purpose is to store mechanical energy in kinetic form, and which contains:
    - an inductive speed sensor (504) for transmitting the output shaft speed through a flywheel speed bus (503), sending the data by communications bus to the vehicle control unit;
    - a planetary speed reducer with magnetic output (501), composed of a magnetic crown (5011) mounted on a planetary gear (5012) and formed by a plurality of magnets (50113) fitted in housings (50112), oriented radially according to an equidistant and circumferential arrangement, arranged in a body (50111) so that the polarity orientation of each magnet is inverse to the polarity orientation of its adjacent magnets;
    - a magnetic coupling wheel (502) for the capture and delivery of mechanical energy, formed by a plurality of magnets (5022) arranged in their respective housings, radially oriented according to an equidistant and circumferential arrangement, so that the orientation of the The polarity of each magnet is inverse to the orientation of the polarity of its adjacent magnets and that it contains a coupling pin (5023) and a drive shaft (5021);
    and in which the magnetic coupling wheel (502) magnetically sympathizes with the magnetic crown (5011) by placing them facing the poles of their opposite magnets;
    F. a second shaft (60), of the freewheel (70), whose function is to transmit an angular mechanical power along its axis;
    g. a freewheel (70), whose function is to allow the power coming from the driving axle, that is to say the driving axle (03), to move the resistant axle, the second axle (60), and not vice versa;
    5 h. a stop / start connector (80), Bendix type; whose functionality is when it is not electrically excited through the stop / start connector action (801), reception of the data by communications bus of the vehicle control unit, engage with the toothed crown (02), of the driving inertia flywheel, with the purpose of loading the flywheel (50); in case of excitement, the disengagement occurs.
    10
    [2]
    2. Start / stop system for a car by mechanical accumulator (1), according to claim 1, which is characterized by the fact that it has a pedal sensor (90) arranged on a brake pedal (900) to activate the accumulation High speed inertia flywheel mechanics (50) during speed reduction by
    15 braking
    [3]
    3. Start / stop system for a car by means of mechanical accumulator (1), according to previous claims, characterized by the fact that the number of magnets (5022, 50113) should be even.
    twenty
    [4]
    4. Start / stop system for a car by means of mechanical accumulator (1), according to previous claims, characterized in that the magnets (5022, 50113) are made of neodymium alloy, iron and boron (Nd2Fe14B) coated of a nickel layer to protect them from corrosion.
    25
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    同族专利:
    公开号 | 公开日
    ES2620674B2|2017-12-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    ES8101199A1|1979-04-27|1980-12-01|Luk Lamellen & Kupplungsbau|A method of and an apparatus for operating a motor vehicle with an internal combustion engine|
    DE3011949A1|1980-03-27|1981-11-19|Michael 8000 München Zoche|Motor vehicle control for fuel economy - is by having flywheel to restart engine after stopping caused traffic delay esp. in urban driving|
    WO2010068100A1|2008-12-08|2010-06-17|Dti Group B.V.|Start system for a combustion engine|
    US20100280712A1|2009-05-01|2010-11-04|Timothy James Bowman|Hybrid Vehicles and Control Methods|
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    ES201601105A|ES2620674B2|2016-12-22|2016-12-22|Start / stop system for a car by mechanical accumulator|ES201601105A| ES2620674B2|2016-12-22|2016-12-22|Start / stop system for a car by mechanical accumulator|
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