Fuel saving sensor system

• US 7,404,784 B2
• Filed: 11/17/2005
• Issued: 07/29/2008
• Est. Priority Date: 11/17/2005
• Status: Active Grant

• Current Assignee: Arriver Software LLC (Qualcomm, Inc.)
• Original Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Inventors: De Mersseman, Bernard
• Primary Examiner(s): PANG, ROGER L
• Application Number:
  US11/282,050
• Publication Number:
  US 20070111857A1
• Time in Patent Office: 985 Days
• Field of Search: 477/3, 477/4, 477/92, 477/97, 477/115, 477/199, 477/200, 477/902, 701/96, 701/300, 701/301, 701/302
• US Class Current: 477/97
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/10 including control of change-speed gearings
• CPC Class Codes: B60W 10/184 with wheel brakes
• CPC Class Codes: B60W 30/16 Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
• CPC Class Codes: F02N 11/0837 Environmental conditions thereof, e.g. traffic, weather or road conditions
• CPC Class Codes: F02N 2200/125 Information about other vehicles, traffic lights or traffic congestion
• CPC Class Codes: Y02T 10/40 Engine management systems
• CPC Class Codes: Y02T 10/84 Data processing systems or methods, management, administration

Abstract

The system includes an engine, a sensor, and a controller. The engine provides a driving motion for the vehicle. The sensor unit is configured to determine a range of a leading vehicle. The controller is in communication with the engine and the sensor unit, such that the controller may shut down the engine based on the range of the lead vehicle as determined by the sensor unit.

Claims

1. A system for reducing fuel consumption of a vehicle, the vehicle including an engine for driving vehicle motion, the system comprising:

a sensor unit configured to determine motion characteristics of a leading vehicle;

a controller in electrical communication with the engine and the sensor unit, wherein the controller is configured to shut down the engine based on the motion characteristics of the leading vehicle; and

wherein the controller is configured to restart the engine based on the range of the leading vehicle.

2. The system according to claim 1, wherein the sensor unit includes a vision sensor and an image processor, the camera being configured to take an image of the leading vehicle and the image processor being in electrical communication with the camera to determine the motion characteristics of the leading vehicle based on the image.

3. The system according to claim 1, wherein the sensor unit includes a laser based range measurement sensor to determine the motion characteristics of the leading vehicle.

4. The system according to claim 1, wherein the sensor unit includes a radar sensor configured to determine the motion characteristics of the leading vehicle.

5. The system according to claim 1, wherein the controller is configured to disengage a vehicle transmission based on the motion characteristics of the leading vehicle.

6. The system according to claim 1, wherein the controller is configured to increase a brake pump output when the engine is shut down or started.

7. The system according to claim 1 wherein the controller is configured to shut down the engine based on a closing velocity of the leading vehicle.

8. The system according to claim 1, wherein the controller is configured to shut down the engine based on a range of the leading vehicle.

9. The system according to claim 1, wherein the controller is configured to shut down the engine based on acceleration of the leading vehicle.

10. The system according to claim 1, wherein the controller is in electrical communication with a braking system of the vehicle and the controller is configured to shut down the engine based on a braking signal from the braking system.

11. The system according to claim 10, wherein the controller is configured to shut down the engine when a braking time of the braking system exceeds a threshold braking time.

12. The system according to claim 1, wherein the controller is in electrical communication with the throttle, the controller being configured to shut down the engine based on a throttle signal from the throttle.

13. The system according to claim 12, wherein the controller is configured to shut down the engine when the throttle level is below a threshold throttle level.

14. The system according to claim 1, wherein the controller is configured to shut down the engine based on vehicle speed.

15. The system according to claim 14, wherein the controller is configured to shut down the engine when the vehicle speed is below a threshold vehicle speed.

16. The system according to claim 1, further comprising an alternator-motor, the alternator-motor being configured to generate electrical power when the engine is running, and generate a torque input to start the engine when the engine is shut down.

17. The system according to claim 16, wherein the controller is configured to restart the engine when the range of the lead vehicle exceeds a threshold range.