TECHNIQUE FOR PROVIDING MEASURED AERODYNAMIC FORCE INFORMATION TO IMPROVE MILEAGE AND DRIVING STABILITY FOR VEHICLE

• US 20130080018A1
• Filed: 12/12/2011
• Published: 03/28/2013
• Est. Priority Date: 09/28/2011
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Baek, Seung Jin
• Granted Patent: US 9,067,602 B2
• Time in Patent Office: Days
• US Class Current: 701/96
• CPC Class Codes: B60K 2310/26 Distance setting methods, e.g. determining target distance to target vehicle
• CPC Class Codes: B60W 2530/16 Driving resistance
• CPC Class Codes: B60W 2554/801 Lateral distance
• CPC Class Codes: B60W 2754/30 Longitudinal distance
• CPC Class Codes: B60W 30/16 Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
• CPC Class Codes: B60W 40/1005 Driving resistance
• CPC Class Codes: G01L 15/00 Devices or apparatus for measuring two or more fluid pressure values simultaneously
• CPC Class Codes: G01M 17/007 Wheeled or endless-tracked vehicles G01M17/08 takes precedence
• CPC Class Codes: Y02T 10/40 Engine management systems
• CPC Class Codes: Y02T 10/84 Data processing systems or methods, management, administration

Abstract

Disclosed is a technique for providing aerodynamic force information to improve gas mileage and driving stability of a vehicle. In particular, a plurality of pressure sensors are provided in a vehicle body and are configured to sense the pressure of air received from each of several points of the vehicle when the vehicle is driven. A first unit then calculates an air resistance value by measuring aerodynamic force data which the vehicle receives from air based on a pressure value of air sensed by the pressure sensor and driving information depending on the driving of the vehicle, and a method thereof.

Claims

1. A system for providing aerodynamic information to improve gas mileage and driving stability of a vehicle, comprising:

a plurality of pressure sensors installed on a vehicle body and configured to sense air pressure received from each of several points on the vehicle when the vehicle is driven; and

a first unit configured to calculate an air resistance value by measuring aerodynamic force data which the vehicle receives from air based on;

a pressure value of air sensed by at least one of the plurality of pressure sensors, and

driving information associated with driving characteristics of the vehicle.

2. The system of claim 1, further comprising:

a unit configured to measure a distance between a self-vehicle and other vehicles that travel around the self-vehicle; and

a calculation unit configured to calculate an optimal intervehicle distance at which the air resistance value is minimized based on the aerodynamic force data measured by the first unit and an intervehicle distance from a preceding vehicle.

3. The system of claim 1, wherein the aerodynamic force data measured by the first unit is provided to a vehicle dynamic control (VDC) and a vehicle stability management (VSM) system.

4. The system of claim 1, wherein the pressure sensor is installed to sense a pressure value from each of front and rear surfaces, both side surfaces, and a top and bottom surfaces of the vehicle.

5. The system of claim 1, wherein the first unit senses the pressures in the pressure sensors installed in the front and rear surfaces of the vehicle body and measures a drag force which the vehicle receives through a difference between the sensed pressure values.

6. The system of claim 1, wherein the first unit senses the pressure in the pressure sensors installed in both side surfaces of the vehicle body and measures a lateral force which the vehicle receives through a difference between the sensed pressure values.

7. The system of claim 1, wherein the first unit senses the pressure in the pressure sensors installed in the top and bottom surfaces of the vehicle body and measures a lift force which the vehicle receives through a difference between the sensed pressure values.

8. The system of claim 1, wherein the calculation unit repeatedly calculates an optimal intervehicle distance based on aerodynamic force data which the vehicle receives and an intervehicle distance from a preceding vehicle when the preceding vehicle changes or the intervehicle distance from the preceding vehicle is changed.

9. The system of claim 1, wherein the calculation unit stores a predetermined intervehicle safety distance from a preceding vehicle and determines whether the intervehicle distance can be decreased according to the safety distance.

10. The system claim 9, wherein in the calculation unit, when the intervehicle distance can decrease, by controlling the intervehicle distance to decrease, the intervehicle distance is controlled to further decrease when the air resistance value decreases and the distance-controlled intervehicle distance and the air resistance values are stored when the air resistance value does not decrease.

11. The system claim 9, wherein in the calculation unit, when the intervehicle distance cannot decrease, by controlling the intervehicle distance to increase, the intervehicle distance is controlled to increase when the air resistance value decreases and the distance-controlled intervehicle distance and the air resistance value are stored when the air resistance value does not decrease.

12. A system for providing aerodynamic information to improve a mileage and driving stability of a vehicle, comprising:

a controller configured to received sensed air pressure which a vehicle body receives by using a plurality of pressure sensors provided in the vehicle body, calculate aerodynamic

force data which the vehicle receives based on the sensed pressure value and driving information associated certain driving characteristics of the vehicle and calculate the optimal intervehicle distance between the vehicle and a preceding vehicle at which the air resistance value is minimized based on the aerodynamic force data and by measuring the intervehicle distances from other vehicles around the vehicle.

13. A method for providing aerodynamic information to improve a mileage and driving stability of a vehicle, comprising:

measuring pressure which a vehicle body receives while a vehicle is driven by a plurality of pressure sensors installed in the vehicle body;

measuring, by a controller, aerodynamic force data which the vehicle receives from air based on pressure values sensed by the pressure sensors and driving information based on the driving characteristics of the vehicle;

measuring, by a measuring device, distances from other vehicles which are travelling around the vehicle; and

calculating, by the controller, an optimal intervehicle distance at which an air resistance value is minimized based on an intervehicle distance from a preceding vehicle.

14. A computer readable medium containing executable program instructions executed by a processor, comprising:

program instructions that measure aerodynamic force data which the vehicle receives from air based on pressure values sensed by the pressure sensors and driving information based on the driving characteristics of the vehicle;

program instructions that measure distances from other vehicles which are travelling around the vehicle; and

program instructions that calculate an optimal intervehicle distance at which an air resistance value is minimized based on an intervehicle distance from a preceding vehicle.