Stoichiometric and enrichment mixture control during different s

System for controlling oxygen concentration in exhaust gas and e

System for detecting deterioration of a three-way catalyst of an

System for detecting deterioration of a three-way catalyst of an

System for detecting deterioration of exhaust gas purifying cata

System for detecting deterioration of HC sensors for internal co

System for determining deterioration of catalysts of internal co

System for diagnosing deterioration of catalyst

System for diagnosing deterioration of catalyst in exhaust syste

System for diagnosing engine exhaust gas purifying device and sy

System for feedback-controlling the air-fuel ratio of an air-fue

System for introducing secondary air into an internal combustion

System for introducing secondary air into an internal combustion

System for monitoring performance of HC sensors for internal com

System for monitoring the efficiency of a catalyser, particularl

System for monitoring the functioning ability of catalytic conve

System for monitoring the performance of automotive catalysts

System operable to control exhaust gas emission of engine

System to control the ratio of air to fuel of the mixture delive

Two barrel carburetor