Abstract: A device for adjusting and controlling the actual supplied amount of urea entering an exhaust system comprises an electronic control unit (1), a compressed air supply device (2), a urea storage device (3), a compressed air control device (4), a metering pump or a metering valve (5), a spray nozzle (6), a main pipeline (7), a urea pipeline (8), and a urea control device (9). The urea control device (9) is in communication with the electronic control unit (1) and controls the actual supplied amount of urea injected into the exhaust system from the spray nozzle according to the starting time point and the finishing time point. A method for adjusting and controlling the actual supplied amount of urea entering an exhaust system is also disclosed. The present device and method effectively prevent the excessive urea from being injected into the exhaust system, and enable the original exhaust system to match with stricter emission standards through a low cost improvement.

Abstract: A remote traffic data acquisition and intelligent vehicle highway system for highway vehicles is provided. In-vehicle devices compute time-related vehicle locations on a digitized road network map using information received from a global position system (GPS) and transmit the time-related vehicle locations to a traffic service center. The traffic service center collects the data from all equipped vehicles that travel the roadway system in an area within range, processes the data and provide a real-time traffic forecasts. The in-vehicle devices receive the digitized road network map as well as the real-time traffic forecasts and provide route guidance and related services for the drivers using the traffic forecast information. The traffic forecast is based on projections from normal traffic conditions retrieved from archived data adjusted by factors related to real-time situations. The system provides a practical and economic solution for an intelligent highway vehicle system.

Abstract: An image processing system and method for generating a palette for paletted images. The invention assigns an area of the color space with a higher importance using weights and color space distance so that more entries in the palette will represent these more important colors. Therefore, the color representation of the paletted image will more closely resemble the original absolute color image in the area of interest.