TOKYO — Toyota Motor Corp. has developed a catalytic converter for diesel engines that simultaneously reduces oxides of nitrogen (NOx) and particulates. The integrated device, which incorporates a new diesel particulate/NOx reduction system (called DPNR), is scheduled for production-vehicle use in Japan in 2003, after Toyota certifies durability under a variety of operating conditions. Initially, the converter will be installed in light-duty trucks such as the 4L Toyota Dyna and Hino ...

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