System and method for automatically controlling a vehicle speed to a desired cruising speed
Patent 4829437 Issued on May 9, 1989. Estimated Expiration Date: 
April 28, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 28, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesApparatus for control of transition to auto-cruise Apparatus for control of acceleration and deceleration during auto-cruise Control device for vehicle speed Constant-speed driving system Patent #: 4725969 InventorsAssigneeApplicationNo. 07/043468 filed on 04/28/1987US Classes:701/93, Vehicle speed control (e.g., cruise control)123/352, Engine speed sensing having an error signal producing circuit180/170, WITH MEANS RESPONSIVE TO SPEED OF VEHICLE FOR MAINTAINING SPEED AT, OR PREVENTING IT FROM EXCEEDING, A PARTICULAR VALUE180/179, And electrical quantities comparison means for development of electrical input701/94Having gradient responsive control to suppress hunting, overshooting, or undershootingExaminersPrimary: Chin, GaryAttorney, Agent or FirmInternational ClassesB60K 31/06 (20060101)B60K 31/10 (20060101) Foreign Application Priority Data1986-05-01 JPAbstractA system and method for automatically controlling a vehicle speed to a desired cruising speed in which after a vehicular engine is set in an acceleration state for the vehicle through an actuator under an acceleration control of the vehicle speed in response to a command operation of an acceleration switch, the vehicular engine is set so that the vehicle speed is reduced and arrives at a set cruising speed at a time of a reset of the command operation of the acceleration switch. At this time, in the vehicle speed controlling system and method, a duration in which the vehicle speed is one abruptly reduced is calculated on the basis of a control duration for which the vehicle speed is in the acceleration state under the acceleration control so that the vehicle speed is smoothly reduced and reaches the set cruising speed. The acceleration state of the vehicle speed is such that the actuator actuates a throttle valve to angularly displace toward an open direction so that the rate of increase in the vehicle speed with respect to time (i.e., acceleration value) is increased to match with a predetermined rate. | |
