Komatsu Ltd. has developed new engine technologies designed to comply with new emission regulations in Japan, North America and Europe effective 2014, and is going to start commercial production in January 2014. Emission regulations for diesel engines for use in construction equipment, announced in 2004, require a challenging reduction of NOx(nitrogen oxides) and PM (particulate matter) emissions to one tenth of, or below the preceding regulations1 and specifies(明記する)enforcement(施行)in two phases, 2011 and 2014.(http://www.komatsu.com/CompanyInfo/press/2014010716421905731.html)