Disclosed herein is an anti-aquaplaning system for a motor vehicle, that includes: a storage unit for operating liquids, a supply unit, and a dispensing unit. The dispensing unit includes at least a first and a second injector configured for injecting liquid towards the ground at a position in front of, respectively, a right tread and a left tread of a right wheel and a left wheel of an axle of the motor vehicle, and at least one fluid accumulator configured for storing liquid under pressure and being in fluid communication with said first injector and second injector.
Method for managing intervention events of an anti-aquaplaning system (1; 100) for a vehicle, comprising at least a first and a second injector (2, 4) configured to inject liquid towards the ground (G) in a forward position, respectively, to a right tread (RT) and to a left tread (LT) of a right wheel (R) and a left wheel (L) of an axle of the vehicle, the method comprising: • - acquiring a signal representative of the need for intervention of the system, • - identifying a plurality of risk factors relevant to the possibility of a collision following loss of vehicle control during an aquaplaning event, • - acquiring signals representative of each risk factor, • - defining a collision risk indicator (CR) and determining a value of said risk indicator, • - confirming the need for intervention of the anti-aquaplaning system and control the intervention if the value of said risk indicator is higher than a threshold.
Disclosed herein is a method for handling intervention events of an anti-aquaplaning system (1; 100) for a vehicle, comprising at least a first and a second injector (2, 4) configured to inject liquid towards the ground (G) in a forward position, respectively, to a right tread (RT) and to a left tread (LT) of a right wheel (R) and a left wheel (L) of an axle of the motor vehicle, the method comprising: - acquiring a signal representative of the need for intervention of the anti-aquaplaning system (1; 100), - identifying a plurality of risk factors (V, Tr, Tc, 0, LC, OA, OV, DR, R, TW) relevant to the possibility of a collision following loss of vehicle control during an aquaplaning event, acquiring, from an in-vehicle data network, signals representative of each risk factor, - defining a collision risk indicator (CR) based on a combination of said signals representative of each risk factor, determining a value of said risk indicator (CR), - confirming the need for intervention of the anti- aquaplaning system and control the intervention if the value of said risk indicator (CR) is higher than a threshold value.
B60B 39/02 - Vehicle fittings for scattering or dispensing material in front of its wheels
B60B 39/08 - Vehicle fittings for scattering or dispensing material in front of its wheels the material being granular, e.g. sand the dispensing being effected by fluid means
B60B 39/10 - Vehicle fittings for scattering or dispensing material in front of its wheels the material being granular, e.g. sand the dispensing being controlled electrically or electromagnetically
4.
A METHOD FOR DETERMINING ASYMMETRY CONDITIONS IN A MOVING VEHICLE
B60W 40/10 - Estimation or calculation of driving parameters for road vehicle drive control systems not related to the control of a particular sub-unit related to vehicle motion
An anti-aquaplaning system for a motor-vehicle, includes control unit configured to assist a driver to avoid aquaplaning. The control unit is programmed for: receiving real time signals detected by automated driving assistance devices and a data transmission and receiving unit, integrating the received signals to generate an output signal indicative of a risk of aquaplaning, if said output signal exceeds a predetermined value of a minimum risk condition, generating a warning for the driver to inform him preventively of the risk of encountering a water layer which could lead to a lifting and/or slipping condition of the wheels on the wet road surface, in such a way that said control unit alerts the driver prior to contact of the wheels with the water layer on the road surface in such a quantity as to no longer ensure an adequate grip between the wheels and the road surface.
A method is described for determining interface conditions between a tire and the ground in a motor vehicle, particularly to determine an onset of an aquaplaning phenomena. The method includes: determining a reference longitudinal acceleration of the vehicle, measuring an actual longitudinal acceleration of the vehicle, calculating a difference between the reference longitudinal acceleration and the actual longitudinal acceleration, determining an additional drag at the interface between tire and ground on the basis of the difference, and a lift at the interface between tire and ground on the basis of the additional drag, and determining a threshold force at which a lifting of the tire from the ground occurs, comparing the lift with the threshold force and determining a degree of proximity of the interface conditions between tire and ground to an aquaplaning condition.
An anti-aquaplaning system for a motor vehicle includes: a storage unit for operating liquids, a mixing unit, a supply unit, and a dispensing unit. The dispensing unit includes at least a first injector and a second injector configured for the injection of liquid to the ground at the front of, respectively, a right tread and a left tread of a right wheel and a left wheel of a motor vehicle front axle. The anti-aquaplaning system operates with an operating mixture defined by operating fluids stored in a main tank and in at least one auxiliary tank.
The present invention relates to a method for determining interface conditions between tire and ground in a motor vehicle, particularly to determine the onset of aquaplaning phenomena, comprising: determining a plurality of indicators of interface conditions between tire and ground (RST, REST, GRP, GPRT, GPRD, IRR, CTR), - calculating respective values of the indicators of interface conditions between tire and ground (RST, REST, GRP, GPRT, GPRD, IRR, CTR) of said plurality on the basis of a dynamic equilibrium of the motor vehicle - determining, for each calculated value of said indicators of interface conditions between tire and ground of said plurality, a value of probability (PAq(RES), PAq(REST), PAq(GRP), PAq(GRPT), PAq(IRR), PAq(CTR), PAq(GPRD)) of the onset of an aquaplaning phenomenon, - determining, for each value of probability of the onset of an aquaplaning phenomenon, a weight (K1, K2, K3, K4, K5, K6, K7), and determining a weighed value of probability (PAq(RES)*K1, PAq(REST)*K2, PAq(GRP)*K3, PAq(GRPT)*K4, PAq(IRR)*K5, PAq(CTR) *K6, PAq(GPRD)*K7) for each value of probability of the onset of an aquaplaning phenomenon by means of application of each weight (K1, K2, K3, K4, K5, K6, K7) to the respective value of probability of the onset of an aquaplaning phenomenon (PAq(RES), PAq(REST), PAq(GRP), PAq(GRPT), PAq(IRR), PAq(CTR), PAq(GPRD)), - determining a final value (PAqJDUT) of probability of the onset of an aquaplaning phenomenon by combination of the weighed weighed values of probability (PAq(RES)*K1, PAq(REST)*K2, PAq(GRP)*K3, PAq(GRPT)*K4, PAq(IRR)*K5, PAq(CTR)*K6, PAq(GPRD)*K7).
B60W 40/10 - Estimation or calculation of driving parameters for road vehicle drive control systems not related to the control of a particular sub-unit related to vehicle motion
9.
AN ANTI-AQUAPLANING SYSTEM FOR A MOTOR VEHICLE AND RELATED METHOD
Disclosed herein is an anti-aquaplaning system (1) for a motor vehicle, comprising: - a storage unit (2) for operating liquids, - a supply unit (6), - a dispensing unit (8), wherein: - said dispensing unit (8) comprising at least a first and a second injector (10, 12) configured for injecting liquid towards the ground at a position in front of, respectively, a right tread (RT) and a left tread (LT) of a right wheel (R) and a left wheel (L) of an axle of the motor vehicle, and at least one fluid accumulator (14) configured for storing liquid under pressure and being in fluid communication with said first injector (10) and second injector (12).
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Electronic detection systems for road surface conditions; Sensors, Detectors; Monitoring instruments; Computer software and computer software platforms for detecting road surface conditions; Electronic detection systems for tyre grip and/or adhesion on the road surface. Vehicle security systems; Vehicle hydraulic system; Hydraulic power transmission units for land vehicles.
11.
A SYSTEM FOR PREVENTING THE PHENOMENON OF AQUAPLANING IN A MOTOR-VEHICLE, AND RELATED METHOD
There is described an anti-aquaplaning system (S) for a motor-vehicle (V), comprising an electronic control unit (1) configured to assist the driver to avoid a phenomenon of aquaplaning. The electronic control unit (1) is programmed for: • receiving in real time a plurality of signals detected by means of automated driving assistance devices (3) and by means of a data transmission and receiving unit (2), • integrating the received signals to generate an output signal indicative of the risk of aquaplaning, • if said output signal exceeds a predetermined value corresponding to a minimum risk condition, generating a warning for the driver so as to inform him preventively of the possible risk of encountering a water layer which could lead to a lifting and/or slipping condition of the wheels (W) on the wet road surface, • in such a way that said electronic control unit (1) is configured to alert the driver prior to the contact of the tires of the motor- vehicle (V) with a water layer extended on the road surface in such a quantity as to no longer ensure an adequate grip between the wheels (W) of the motor-vehicle (V) and the road surface.
B60W 50/14 - Means for informing the driver, warning the driver or prompting a driver intervention
G08G 1/048 - Detecting movement of traffic to be counted or controlled with provision for compensation of environmental or other condition, e.g. snow, vehicle stopped at detector
B60B 39/02 - Vehicle fittings for scattering or dispensing material in front of its wheels
B60T 8/00 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
12.
A METHOD FOR DETERMINING INTERFACE CONDITIONS BETWEEN TIRE AND GROUND, PARTICULARLY TO DETERMINE THE ONSET OF AQUAPLANING PHENOMENA
A method is described for determining interface conditions between tire and ground in a motor vehicle, particularly to determine the onset of aquaplaning phenomena, comprising: determining a reference longitudinal acceleration (aXPTMDL) of the vehicle, - measuring an actual longitudinal acceleration of the vehicle (SXCAN), - calculating a difference between said reference longitudinal acceleration and said actual longitudinal acceleration, determining an additional drag (FD, PWTMDL_Drag_Level ) at the interface between tire and ground on the basis of said difference, and a lift (FL) at tthhee interface between tire and ground on the basis of said additional drag (FD), - determining a threshold force at which a lifting of the tire from the ground occurs, - comparing said lift wwiitthh said threshold force and determining a degree of proximity of the interface conditions between tire and ground to an aquaplaning condition.
B60W 40/10 - Estimation or calculation of driving parameters for road vehicle drive control systems not related to the control of a particular sub-unit related to vehicle motion
B60W 50/14 - Means for informing the driver, warning the driver or prompting a driver intervention
B60T 8/00 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
Disclosed herein is an anti-aquaplaning system for a motor vehicle, including: • - a storage unit (2; 102) for operating liquids, • - a mixing unit (4; 104), • - a supply unit (6; 106), • - a dispensing unit (8; 108), said dispensing unit (8; 108) comprising at least a first and a second injector (12; 112) configured for the injection of liquid to the ground at the front of, respectively, a right tread (RT) and a left tread (LT) of a right wheel (R) and a left wheel (L) of a motor vehicle front axle. The system operates with an operating mixture defined by the operating fluids stored in a main tank and in at least one auxiliary tank.
There is described a dispensing unit (1; 100; 200) for an anti-aquaplaning system for a motor vehicle, comprising : - at least one injector (2; 102; 202) configured for the injection of a supply liquid towards the ground at the front of a tread (LT, RT) of a wheel of a motor vehicle axle, - a mounting element (4; 104; 204) configured for fixing the injector (2; 102; 202) to the vehicle, an actuator unit (6; 106; 206) operatively associated with each injector (2; 102; 202), the actuator unit (6; 110066;; 206) being configured to control a variation of trim of the injector (2; 102; 202) with respect to said mounting element (4; 104; 204). There are moreover described an ant i-aquaplaning system comprising; a dispensing unit and a corresponding method.
A pumping unit (1) of a system (S) for preventing the phenomenon of aquaplaning in a motor-vehicle (V), configured to generate the operating pressure of a jet of fluid directed onto a road surface. The pumping unit (1) comprises: - a cylinder-piston assembly (2) including a cylinder (3) within which a piston (4) extending along a pumping axis (X1) is slidably mounted, - wherein the piston (4) can be driven forward and backward to vary the effective volume of the cylinder (3), by means of a screw-nut mechanism (22) provided for converting a rotation movement into a linear movement, - an electric motor (5) comprising a crankshaft (50) extending along a second axis (X2) offset with respect to the pumping axis (X1) and operatively connected to the screw-nut mechanism (22), - a gear train transmission (6) provided for transmitting the rotation movement from the crankshaft (50) to the screw-nut mechanism (22), ensuring the required transmission ratio, and - a braking device (7) provided for locking the operation of the pumping unit (1) during an operational step of the motor-vehicle (V) wherein the emission of the jet of fluid is not required.
F04B 9/04 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
A system for preventing aquaplaning in a vehicle, said system comprising: a tank suitable for containing a fluid; sensor means configured to reveal the conditions of the vehicle and/or the environment in which the vehicle is found, and in particular, the conditions of a street surface; injector means configured to generate a jet of fluid on said street surface, said injector means being associated with at least one wheel of the vehicle; a control unit associated with sensor means and configured for controlling said injector means according to the conditions revealed by said sensor means. A unique feature of the system of the present invention consists in the fact that said injector means comprise at least one “fan-type” nozzle and equipped with a slit-shaped outlet opening suitable for creating a flat jet of fluid.
B60B 39/02 - Vehicle fittings for scattering or dispensing material in front of its wheels
B60B 39/10 - Vehicle fittings for scattering or dispensing material in front of its wheels the material being granular, e.g. sand the dispensing being controlled electrically or electromagnetically
B60B 39/08 - Vehicle fittings for scattering or dispensing material in front of its wheels the material being granular, e.g. sand the dispensing being effected by fluid means
Device to avoid the aquaplaning problem on a vehicle (10), the device being applicable at least on the drive wheels (28) of the vehicle and including a tank (12) of fluid under pressure that is connected to a plurality of fluid ejectors (26) associated with the respective wheels and suitable to shoot jets of pressurized fluid onto the road surface, and sensors (18) suitable to detect the conditions of the road surface to actuate the fluid ejectors. The fluid ejectors (26) are injector nozzles controlled by a central processing unit (CPU), which receives the signals from the sensors (18), and are operated in a manner coordinated with the physical position of the respective wheel so as to be continually oriented in the direction of travel of the same wheel.
B60B 39/02 - Vehicle fittings for scattering or dispensing material in front of its wheels
B60B 39/10 - Vehicle fittings for scattering or dispensing material in front of its wheels the material being granular, e.g. sand the dispensing being controlled electrically or electromagnetically
