§
Luxuse
Patent Intelligence
Sign In
Patent US4740898A successfully refreshed from Google Patents.
← Back to Patent Explorer
EP0911234A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Vehicle dynamic control system

Assignee: Subaru Corp
•
Filing: 1998-10-21
•
Granted: —
•
Expires: 2018-10-21
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract The present invention provides a vehicle dynamic control system which alters characteristics of respective vehicle movement controllers so that they can function properly against coming and foreseeable running conditions and current running conditions, recognizing beforehand details of an emerging curve on the road to be traveled. The system comprises a vehicle movement control alterant and at least one among vehicle movement controllers ,i.e., a brake controller, a left/right wheel differential limiter controller and power distribution controller. When the vehicle is approaching the curve, the vehicle movement control alterant alters characteristics of a braking controller, the left/right wheel differential limiter controller and the power distribution controller to those favorable to turning for driving through a curve appropriately. When the vehicle is approaching the curve end, the alternate alters characteristics of the left/right differential controller to those favorable to stabilizing running so that the vehicle can pass the curve end and go into straight road appropriately.

Inventors

  • 👤 Koji Matsuno
  • 👤 Munenori Matsuura
  • 👤 Toshihiro Konno
  • 👤 Akira Takahashi
  • 👤 Atsushi Mine

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-26 19:45
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/17; B60T8/1755; B60T2201/00; B60T2201/14; B60T2201/16; B60T2210/00; B60T2210/20; B60T2210/24; B60T2210/30; B60T2210/36

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 94 words
A vehicle control system comprising: a vehicle position detecting means for determining position of a running vehicle; a curve geometry detecting means for detecting an emerging curve and calculating curve geometry; at least one vehicle movement controlling means for controlling movement of said vehicle; and a vehicle movement control altering means for altering a characteristic of said vehicle movement controlling means to a characteristic favorable to turning along said emerging curve in accordance with said calculated curve geometry, said vehicle not running in the curve and positioning within a pre-determined distance to the curve.
Claim 2
Dependent Claim 73 words
A vehicle control system according to claim 1, wherein said vehicle movement control altering means alters a characteristic of said vehicle movement controlling means to a characteristic favorable to stabilizing vehicle posture , said vehicle running in the curve and positioning within a pre-determined distance to the curve end and to another characteristic favorable to turning, said vehicle running in the curve and positioning out of a pre-determined distance to the curve end.
Claim 3
Dependent Claim 88 words
A vehicle control system according to claim 1, wherein said vehicle movement controlling means is at least one among a brake controller applying braking force to a wheel selected in a predetermined manner based on vehicle running conditions, a left/right wheel difference limitation controller controlling differential limiting force between left and right wheels and a power distributing controller controlling differential limiting force applied to a center differential device between front and rear wheels for distributing driving force to front and rear wheels based on the vehicle running conditions.
Claim 4
Dependent Claim 40 words
A vehicle control system according to claim 3, wherein altering of a characteristic of said vehicle movement controlling means to a characteristic favorable to turning is done by changing control parameters, said vehicle movement controlling means being said brake controller
Claim 5
Dependent Claim 72 words
A vehicle control system according to claim 3, wherein altering of a characteristic of said vehicle movement controlling means to a characteristic favorable to turning is done by reducing differential limiting force between said left and right wheels and altering to another characteristic favorable to stabilizing running is done by increasing differential limiting force between said left and right wheels, said vehicle movement controlling means being said left/rear wheel differential limitation controller
Claim 6
Dependent Claim 88 words
A vehicle control system according to claim 3, wherein altering of a characteristic of said vehicle movement controlling means to a characteristic favorable to turning is done by setting differential limiting force for uneven torque distribution to said front and rear wheels and altering to another characteristic favorable to stabilizing running is done by setting differential limiting force for even torque distribution to said front and rear wheels, said vehicle movement controlling means being said power distributing controller controlling differential limiting force applied to a center differential device.

References Cited (Backward Citations)

JPH0270561A Cited
JPH0976894A Cited

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag