Alignment changing control device and fuel consumption management device

• US 8,249,774 B2
• Filed: 09/21/2011
• Issued: 08/21/2012
• Est. Priority Date: 02/16/2007
• Status: Expired due to Fees

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Suyama, Koichi, Kobayashi, Akiyoshi, Horiuchi, Yutaka, Hattori, Kenji
• Primary Examiner(s): Tarcza, Thomas
• Assistant Examiner(s): Khatib, Rami
• Application Number:
  US13/238,526
• Publication Number:
  US 20120010781A1
• Time in Patent Office: 335 Days
• Field of Search: 701/37, 701/38, 701/48, 701/65, 701/200, 280/5.5, 280/5.512, 280/5.517, 280/5.52, 280/5.521, 280/5.522
• US Class Current: 701/37
• CPC Class Codes: B60W 30/025 related to comfort of drivers or passengers
• CPC Class Codes: B60W 40/10 related to vehicle motion
• CPC Class Codes: B60W 50/06 Improving the dynamic response of the control system, e.g. improving the speed of regulation or avoiding hunting or overshoot
• CPC Class Codes: B62D 17/00 Means on vehicles for adjusting camber, castor, or toe-in

Abstract

A toe angle changing control ECU for controlling a toe angle of wheels of a vehicle. The toe angle changing control ECU includes: a straight traveling state judging section for judging whether or not the vehicle is in a; a memory for storing the toe angle of the wheels while the vehicle is in the straight traveling state; and a toe angle setting section for setting the wheels to the toe angle stored in the memory when the straight traveling state judging section judges that the vehicle is in the straight traveling state. While in the straight traveling state, the wheels are set to a toe angle at which the wheels are substantially parallel to the longitudinal direction of the vehicle, reducing the rolling resistance of the wheels, and improving fuel consumption.

Claims

1. An alignment changing control device for controlling an alignment of wheels of a vehicle, comprising:

an alignment setting unit configured to set the alignment of the wheels in a traveling condition;

a fuel consumption calculating unit configured to calculate a fuel consumption in the traveling condition at each of a plurality of different alignments set by the alignment setting unit;

a fuel consumption information storage configured to correlate the fuel consumption calculated by the fuel consumption calculating unit at each of the plurality of different alignments with the alignment at which each fuel consumption was calculated, and to store a plurality of correlated alignments and fuel consumptions so that fuel consumption related information corresponding to each of the plurality of different alignments is stored; and

a selecting unit configured to read out the fuel consumption related information from the fuel consumption information storage and to select the alignment correlated with a best fuel consumption from among the plurality of different alignments stored in the fuel consumption information storage,

wherein

the alignment setting unit is configured to set the wheels to the alignment selected by the selecting unit.

2. The alignment changing control device according to claim 1, wherein the fuel consumption calculating unit calculates the fuel consumption as a fuel consumption rate numerically expressed as a distance travelled per quantity of fuel consumed, and

the selecting unit is configured to compare the fuel consumptions stored in the fuel consumption information storage, and to select the alignment correlated with the fuel consumption having a maximum value from among the plurality of fuel consumptions stored in the fuel consumption information storage.

3. The alignment changing control device according to claim 1, further comprising:

a fuel consumption trial unit configured to control the alignment setting unit to set the alignment of the wheels to each of a plurality of different trial alignments,

wherein

the fuel consumption calculating unit is configured to calculate the fuel consumption in the traveling condition at each of the plurality of different trial alignments,

the fuel consumption information storage is configured to correlate the fuel consumption calculated by the fuel consumption calculating unit at each of the plurality of different trial alignments with the trial alignment at which the fuel consumption was calculated, and to store a plurality of correlated trial alignments and fuel consumptions so that the fuel consumption related information includes trial fuel consumption related information corresponding to each of the plurality of different trial alignments, and

the selecting unit is configured to read out the trial fuel consumption related information from the fuel consumption information storage and to select the trial alignment correlated with the best fuel consumption from among the plurality of different trial alignments.

4. The alignment changing control device according to claim 3, wherein

the fuel consumption trial unit is configured to control the alignment setting unit to set the alignment of the wheels to each of a predetermined number of different trial alignments,

the selecting unit is configured to read out the trial fuel consumption related information from the fuel consumption information storage and to select the trial alignment correlated with the best fuel consumption from among the plurality of different trial alignments after the fuel consumption calculating unit has calculated the fuel consumption in the traveling condition at each of the predetermined number of different trial alignments and the fuel consumption information storage has correlated the fuel consumption calculated by the fuel consumption calculating unit at each of the predetermined number of different trial alignments with the trial alignment at which the fuel consumption was calculated stored the correlated trial alignments and fuel consumptions, and

the alignment setting unit is configured to set the wheels to the alignment selected by the selecting unit after the selecting unit has selected the trial alignment correlated with the best fuel consumption from among the plurality of different trial alignments.

5. The alignment changing control device according to claim 3, wherein the fuel consumption calculating unit calculates the fuel consumption as a fuel consumption rate numerically expressed as a distance travelled per quantity of fuel consumed, and

the selecting unit is configured to compare the fuel consumptions stored in the fuel consumption information storage, and to select the trial alignment correlated with the fuel consumption having a maximum value from among the plurality of fuel consumptions stored in the fuel consumption information storage.

6. The alignment changing control device according to claim 3, wherein the alignment is at least one of a toe angle and a camber angle.

7. An alignment changing control device for controlling an alignment of wheels of a vehicle, comprising:

a navigation device including;

a specifying element configured to detect a current position of the vehicle;

a map information storing element storing map information including road information;

a traveling history storage configured to correlate a traveling history with the current position and the road information, and to store the correlated traveling history, current position, and road information; and

a same route specifying unit configured to read out the traveling history and to judge whether a route on which the vehicle is traveling is a same route as one on which the vehicle has previously traveled;

an alignment setting unit configured to set the alignment of the wheels in a traveling condition;

a fuel consumption calculating unit configured to calculate a fuel consumption at each of a plurality of different alignments set by the alignment setting unit;

a fuel consumption information storage unit configured to correlate the fuel consumption calculated by the fuel consumption calculating unit at each of the plurality of different alignments with the alignment at which each fuel consumption was calculated and the route on which the vehicle is traveling during calculation of the fuel consumption, and to store a plurality of correlated routes, alignments, and fuel consumptions so that same route fuel consumption related information corresponding to each of the plurality of different alignments for each of a plurality of different routes is stored; and

a selecting unit configured to read out the same route fuel consumption related information from the fuel consumption information storage and to select an alignment correlated with a fuel consumption for the route on which the vehicle is traveling if the navigation device specifying section judges that the vehicle is traveling on the same route as one on which the vehicle has previously traveled,

wherein

the alignment setting unit is configured to set the wheels to the alignment selected by the selecting unit.

8. The alignment changing control device according to claim 7, wherein the alignment is at least one of a toe angle and a camber angle.

9. The alignment changing control device according to claim 7, wherein the fuel consumption calculating unit calculates the fuel consumption as a fuel consumption rate numerically expressed as a distance travelled per quantity of fuel consumed, and

the selecting unit is configured to compare the fuel consumptions stored in the fuel consumption information storage, and to select the alignment correlated with the fuel consumption having a maximum value from among the plurality of fuel consumptions stored in the fuel consumption information storage for the route on which the vehicle is traveling if the navigation device specifying section judges that the vehicle is traveling on the same route as one on which the vehicle has previously traveled.

10. The alignment changing control device according to claim 7, further comprising:

a fuel consumption trial unit configured to control the alignment setting unit to set the alignment of the wheels to each of a plurality of different trial alignments for each route on which the vehicle travels,

wherein

the fuel consumption calculating unit is configured to calculate the fuel consumption in the traveling condition at each of the plurality of different trial alignments for each route on which the vehicle travels,

the fuel consumption information storage is configured to correlate the fuel consumption calculated by the fuel consumption calculating unit at each of the plurality of different trial alignments with the trial alignment at which the fuel consumption was calculated and the route on which the vehicle was traveling at a time of calculation, and to store a plurality of correlated trial alignments, fuel consumptions, and routes so that the same route fuel consumption related information includes trial fuel consumption related information corresponding to each of the plurality of different trial alignments set by the alignment setting unit for each route, and

the selecting unit is configured to read out the trial fuel consumption related information from the fuel consumption information storage and to select the trial alignment correlated with a best fuel consumption from among the plurality of different trial alignments for the route on which the vehicle is traveling if the navigation device specifying section judges that the vehicle is traveling on the same route as one on which the vehicle has previously traveled.

11. The alignment changing control device according to claim 10, wherein

the fuel consumption trial unit is configured to control the alignment setting unit to set the alignment of the wheels to each of a predetermined number of different trial alignments for each route on which the vehicle travels,

the selecting unit is configured to read out the trial fuel consumption related information from the fuel consumption information storage and to select the trial alignment correlated with the best fuel consumption from among the predetermined number of different trial alignments for the route on which the vehicle is traveling after the fuel consumption calculating unit has calculated the fuel consumption in the traveling condition at each of the predetermined number of different trial alignments for the route on which the vehicle is traveling and the fuel consumption information storage has correlated the fuel consumption calculated by the fuel consumption calculating unit at each of the predetermined number of different trial alignments for the route on which the vehicle is traveling with the trial alignment at which the fuel consumption was calculated and stored the correlated trial alignments and fuel consumptions for the route on which the vehicle is traveling, and

the alignment setting unit is configured to set the wheels to the alignment selected by the selecting unit after the selecting unit has selected the trial alignment correlated with the best fuel consumption from among the predetermined number of different trial alignments for the route on which the vehicle is traveling.

12. The alignment changing control device according to claim 10, wherein the fuel consumption calculating unit calculates the fuel consumption as a fuel consumption rate numerically expressed as a distance travelled per quantity of fuel consumed, and

the selecting unit is configured to compare the fuel consumptions stored in the fuel consumption information storage, and to select the trial alignment correlated with the route on which the vehicle is traveling and the fuel consumption having a maximum value from among the plurality of fuel consumptions stored in the fuel consumption information storage.

13. The alignment changing control device according to claim 10, wherein the alignment is at least one of a toe angle and a camber angle.

14. An alignment changing control device for controlling an alignment of wheels of a vehicle, comprising:

an input unit configured to input a refueling signal which notifies that a refueling service is received;

an alignment setting unit configured to set the alignment of the wheels when the refueling signal is input by the input unit;

a fuel consumption calculating unit configured to calculate an inter-refueling fuel consumption at each of a plurality of different alignments set by the alignment setting unit, the inter-refueling fuel consumption being a fuel consumption between a time when the refueling signal is input by the input unit and a time when a next refueling signal is input by the input unit;

a fuel consumption information storage configured to correlate the inter-refueling fuel consumption calculated by the fuel consumption calculating unit at each of the plurality of different alignments set by the alignment setting unit with the alignment at which the inter-refueling fuel consumption was calculated, and to store a plurality of correlated alignments and inter-refueling fuel consumptions so that inter-refueling fuel consumption related information corresponding to each of the plurality of different alignments set by the alignment setting unit is stored;

a selecting unit configured to read out the inter-refueling fuel consumption related information from the fuel consumption information storage and to select the alignment correlated with a best inter-refueling fuel consumption from among the plurality of different alignments stored in the fuel consumption information storage; and

the alignment setting unit is configured to set the wheels to the alignment selected by the selecting unit.

15. The alignment changing control device according to claim 14, wherein the fuel consumption calculating unit calculates the inter-refueling fuel consumption as a fuel consumption rate numerically expressed as a distance travelled per quantity of fuel consumed, and

the selecting unit is configured to compare the plurality of inter-refueling fuel consumptions stored in the fuel consumption information storage with one another, and to select the alignment correlated with the inter-refueling fuel consumption having a maximum value from among the plurality of inter-refueling fuel consumptions stored in the fuel consumption information storage.

16. The alignment changing control device according to claim 14, further comprising:

a fuel consumption trial unit configured to control the alignment setting unit to set the alignment of the wheels to each of a plurality of different trial alignments, where each different trial alignment is maintained for a time period between input of each refueling signal by the input unit,

wherein

the fuel consumption calculating unit is configured to calculate the inter-refueling fuel consumption at each of the plurality of different trial alignments, the fuel consumption information storage is configured to correlate the inter-refueling fuel consumption calculated by the fuel consumption calculating unit at each of the plurality of different trial alignments with the trial alignment at which the inter-refueling fuel consumption was calculated, and to store a plurality of correlated trial alignments and inter-refueling fuel consumptions so that the inter-refueling fuel consumption related information includes trial fuel consumption related information corresponding to each of the plurality of different trial alignments set by the alignment setting unit when the signal which notifies a refueling service is received is input by the input unit,

the selecting unit is configured to read out the trial inter-refueling fuel consumption related information from the fuel consumption information storage and to select the trial alignment correlated with a best inter-refueling fuel consumption from among the plurality of different trial alignments.

17. The alignment changing control device according to claim 16, wherein

the plurality of different trial alignments is a predetermined number of different trial alignments,

the selecting unit is configured to read out the trial fuel consumption related information from the fuel consumption information storage and to select the trial alignment correlated with the best inter-refueling fuel consumption from among the predetermined number of different trial alignments after the fuel consumption calculating unit has calculated the inter-refueling fuel consumption at each of the predetermined number of different trial and the fuel consumption information storage has correlated the inter-refueling fuel consumption calculated by the fuel consumption calculating unit at each of the predetermined number of different trial alignments with the trial alignment at which the inter-refueling fuel consumption was calculated and stored the correlated trial alignments and inter-refueling fuel consumptions, and

the alignment setting unit is configured to set the wheels to the alignment selected by the selecting unit after the selecting unit has selected the trial alignment correlated with the best inter-refueling fuel consumption from among the predetermined number of different trial alignments.

18. The alignment changing control device according to claim 16, wherein the fuel consumption calculating unit calculates the inter-refueling fuel consumption as a fuel consumption rate numerically expressed as a distance travelled per quantity of fuel consumed, and

the selecting unit is configured to compare the inter-refueling fuel consumptions stored in the fuel consumption information storage, and to select the trial alignment correlated with the inter-refueling fuel consumption having a maximum value from among the plurality of inter-refueling fuel consumptions stored in the fuel consumption information storage.

19. The alignment changing control device according to claim 16, wherein the alignment is at least one of a toe angle and a camber angle.