Analysis of Hydrocarbon Treating System to The Emission of Spark-Ignition Four-Stroke Engine

Abstract

The reduction of carbon monoxide (CO), unburnthydrocarbon (UHC) emission and fuel consumption on spark-ignition four-stroke engine is continuously attempted.The purposes from this research were to determine the effect of Hydrocarbon Treating System (HTS) on levels of CO, UHC and fuel consumption. This is an experimental research. It is conducted by comparing the exhaust pollutant concentration such as carbon monoxide, unburnt hydrocarbon and also fuel consumption between standard engine setting and Hydrocarbon Treating System

applied. The research variable are HTS flow rate from Q

= 0 cc/s (without HTS), Q

= 1.5 cc/s, Q

= 2 cc/s, Q

= 2.5 cc/s, and Q

= 3 cc/s. The research will be done in

three conditions which are low, medium and high rotation.The result showed that Hydrocarbon Treating System decrease fuel consumption up to 19.43% with flow

rate Q

= 3 cc/s, but on the other hand it increase CO emission up to 80.84% with

flow rate Q

= 3 cc/s and UHC emission level up to 124.75% with flow rate Q = 3

cc/s from engine standard condition