US 2013/0253731 A1Published application

Vehicle control system

AssigneeToyota Jidosha Kabushiki Kaisha

InventorTakeshi Kanou

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Abstract

The vehicle control system controls a vehicle based on an estimated gradient value of a travel road. Further, the vehicle control system includes a front/rear acceleration sensor and wheel speed sensors, and a control device for calculating the estimated gradient value. Further, when the vehicle travels, the control device determines whether or not the vehicle is traveling rearward. Then, when the vehicle is traveling forward, the control device calculates the estimated gradient value based on an output signal of the acceleration sensor and output signals of the wheel speed sensors. In contrast, when the vehicle is traveling rearward, the control device calculates the estimated gradient value based on an output signal of the acceleration sensor.

Claims6

Dependent claims

A vehicle control system for calculating an estimated gradient value of a travel road, comprising:

an acceleration sensor that detects an acceleration of the vehicle;
wheel speed sensors that detects wheel speeds of the vehicle;
and
a control device that calculates the estimated gradient value, wherein
the control device determines a travel direction of the vehicle when the vehicle travels as well as when the control device determines that the vehicle is traveling in one of the travel directions of a forward travel and a rearward travel, the control device calculates the estimated gradient value based on an output signal of the acceleration sensor and output signals of the wheel speed sensors, and when the control device determines that the vehicle is traveling in the other travel direction, the control device calculates the estimated gradient value based on an output signal of the acceleration sensor without using the output signals of the wheel speed sensors.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/990,631Filed 18 Feb 2011
Published: 26 Sep 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

G06F 17/00
Digital computing or data processing equipment or methods, specially adapted for specific
B60T 7/12
Brake-action initiating means: for automatic initiation; for initiation not subject to will of driver or passenger
B60T 13/662
Electrical control in fluid-pressure brake systems: characterised by specified functions of the control system components
B60W 40/076
Road conditions: slope angle of the road

Family

US 9,058,249 B2Related patent
US 2013/0253731 A1This patent

From the US filing history. Foreign family members aren’t listed.

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