Abstract:
An automotive adaptive cruise control system for a host motor vehicle configured to operate in at least two different operating modes comprising a first operating mode, in which a current speed of the host vehicle is controlled to maintain a cruise speed, and a second operating mode, in which the current speed of the host vehicle is controlled to maintain a cruise distance to a leading vehicle, wherein the system is configured to: detect approaching to a traffic light and determine a light signal emitted thereby, signal to the driver the presence of the detected traffic light and the determined light signal, if the traffic light emits a red or amber light signal, estimating a driver reaction time, determining a higher threshold distance and a lower threshold distance from the traffic light, and warning the driver of the host vehicle of the need to slow it down if, after the driver reaction time has elapsed: i) the host motor vehicle has not decreased its speed by more than a calibratable threshold, ii) the current speed of the host vehicle is higher than a minimum speed, iii) either the distance of the host vehicle from the traffic light is lower than the higher threshold distance and the light signal emitted by the traffic light is red, or the distance of the host vehicle from the traffic light is between the higher and lower threshold distances and the light signal emitted by the traffic light is amber, and iv) a service brake of the host vehicle is unoperated.
Abstract:
An automotive adaptive cruise control system for a host motor vehicle configured to operate in at least two different operating modes comprising at least a first operating mode in which a current speed of the host motor vehicle is controlled to maintain a cruise speed, and a second operating mode, in which the current speed of the host motor vehicle is controlled to maintain a cruise distance from a leading motor vehicle. In the second operating mode, the automotive adaptive cruise control system is further configured to estimate the travel trajectory of the motor vehicle relative to that of a leading motor vehicle, and when the leading motor vehicle is estimated to be departing from the travel trajectory of the host motor vehicle, to adjust one or more of the control parameters on based of which the automotive adaptive cruise control system operates in the second operating mode.
Abstract:
A method for controlling a valve-control system for variable-lift actuation of the valves of an internal-combustion engine, wherein the valve-control system comprises, for each cylinder of the engine, a solenoid valve for controlling the flow of a hydraulic fluid in the system, and means configured for determining a real temperature value of said hydraulic fluid.The method includes: determining a deviation of performance of the solenoid valves due to a degradation of the characteristics of said hydraulic fluid with respect to nominal values thereof; and substituting for said real temperature value an equivalent temperature value consisting of a temperature value at which the hydraulic fluid having nominal characteristics would produce performance of the solenoid valves corresponding to the performance resulting from the aforesaid deviation so that each solenoid valve is governed as a function of said equivalent temperature value.