Judging method of load distribution

• US 20060064238A1
• Filed: 08/25/2005
• Published: 03/23/2006
• Est. Priority Date: 09/17/2004
• Status: Active Grant

• Current Assignee: Sumitomo Rubber Industries Limited
• Original Assignee: Sumitomo Rubber Industries Limited
• Inventors: Kitano, Masashi
• Granted Patent: US 8,019,530 B2
• Time in Patent Office: Days
• US Class Current: 701/124
• CPC Class Codes: B60C 23/061 by monitoring wheel speed measuring distance traversed on the ground by vehicles G01C22/00

Abstract

It is the purpose of the present invention to provide a method of judging the load distribution of a vehicle without providing a specific load sensor on a vehicle. The method for judging the load distribution of a vehicle of the present invention is characterized in that the load distribution by the every wheel of a vehicle or the load distribution by every axle is judged by comparing the result of comparing the calculation value of the rotational speeds of wheels in the predetermined two combinations of wheels with the result of comparing the calculation value of the rotational speeds of wheels in the fore-mentioned predetermined two combinations of wheels at a predetermined load when the vehicle is under brakeage. The calculation value of the rotational speeds of wheels in the predetermined two combinations of wheels can be the average of the rotational speeds of front wheels and the average of the rotational speeds of rear wheels, the average of the rotational speeds of 2 left wheels and the average of the rotational speeds of 2 right wheels, the rotational speeds of the front wheel and the rear wheel of 2 left wheels of the vehicle, the rotational speeds of the front wheel and the rear wheel of 2 right wheels, the rotational speed of the left wheel and the rotational speed of the right wheel of the front 2 wheels, or the rotational speed of the left wheel and the rotational speed of the right wheel of the rear 2 wheels.

Claims

1. A judging method of the load distribution of a vehicle based on the rotational speeds of wheels mounted on the vehicle, wherein a judgment flag which judges the rotational speeds of said wheels and whether the vehicle is under brakeage or not is used.

4. A detection method of the decreased tire pressure, wherein a threshold of detecting the decreased tire pressure is changed in accordance with the judgment result of the load distribution, using the judging method of the load distribution of a vehicle according to claim 1.

5. A detecting device for the decreased tire pressure, wherein a threshold of detecting the decreased tire pressure is changed in accordance with the judgment result of the load distribution, using the judging method of the load distribution of a vehicle according to claim 1.

2. A judging device for the load distribution of a vehicle for judging the load distribution of a vehicle based on the rotational speeds of wheels mounted on the vehicle, having a means of inputting the rotational speeds of said wheels, a means of judging whether the vehicle is under brakeage or not and a means of judging the load distribution of a vehicle using a judgment flag which judges the rotational speeds of said wheels and whether the vehicle is under brakeage or not.

3. A judgment program of the load distribution of a vehicle for functionalizing a computer as a means of detecting the rotational speeds of wheels mounted on the vehicle, a means of judging whether the vehicle is under brakeage or not, and a means of judging the load distribution of a vehicle using the detection results of the rotational speeds of wheels and whether the vehicle is under brakeage or not, in order to judge the load distribution of a vehicle.