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We have developed a new technology with which we are able to control PGM distribution two-dimensionally along transversal and vertical direction. Vehicle evaluation using naturally aspirated engine suggested that the newly developed catalyst with two-dimensionally controlled Pd distribution shows an improvement of 8% for NMHC and 15% for NOx emissions compared to conventional zone coated catalyst. In addition, the Pd distribution in front zone was further optimized based on the results of light-off tests. Catalyst with three zones shows clear improvement in purification of NMHC at cold start. The higher purification of newly developed catalysts could be attributed to controlled distribution of PGM along transversal and vertical direction which results in deposition of higher amount of PGM at higher temperature region of the catalyst and efficient interactions of exhaust gases and PGM sites.

Development of a system which utilizes technology for the recognition of a vehicle's surroundings. Research is currently taking place in many countries, the goals of which are to improve a vehicle's safety and convenience by reducing driver strain through the automation of the recognition, judgment, and operation capabilities that are needed when driving an automobile. To recognize the vehicle's surroundings, we have adopted an image sensor system which offers superior three-dimensional recognition capabilities. In this paper, we will introduce a inter vehicle distance control system which controls the vehicle's throttle and braking functions by detecting the position of the driving lane and the distance to the vehicle in front based on the images obtained by a CCD camera.