Describes characteristic designs of the engine. Data for fuel economy and emission are presented. Data show that automobiles equipped with one of the engines described have passed the 1975 Federal Emissions Standards. (SLH)

Condensed versions of prepared statements submitted by participants in a seminar on air pollution control are presented. Topics are organized under the areas of transportation, heat and power, role of the courts, and future federal legislative needs. (DT)

Air pollution control authorities were forced to relax air quality standards during the winter of 1972 by granting variances. This paper examines the institutional characteristics of these variance policies from an economic incentive standpoint, sets up desirable structural criteria for institutional design and arrives at policy guidelines for…