TY  - JOUR
TI  - EFFECTS OF PREHEATER LOAD AND LOCATION ON THE CATALYTIC 
CONVERTER EFFICIENCY DURING COLD START AND IDLING CONDITIONS
AB  - Exhaust emissions are significant pollutants that affect urban lifestyles. There are several regulations related 
to the exhaust emissions of both gasoline and diesel engines. In this study, the effects of a controlled heating of the 
exhaust line before the catalytic converter on the converter efficiency are experimentally investigated. Experiments 
were conducted based on either discrete or cold start conditions. For discrete conditions, the engine was operated until 
it reached normal and steady state operating conditions. Then, the engine was stopped until the catalytic converter 
surface temperature reached the ambient temperature. The experiments were first started without additional heating and 
then continued with different heating loads. In the second stage, the catalytic converter behavior and conversion 
efficiency under cold start conditions were investigated. The exhaust gas after the exhaust manifold was preheated with 
different heating loads for the first 150 seconds after the start of the engine; however, the exhaust line was heated 15 s 
before starting the engine. The effects of the location, length and heat loads of the electrical resistances on the catalytic 
converter behavior were investigated. After all of the experiments, it was concluded that with the appropriate location 
and heating loads, for discrete operating conditions, the hydrocarbon (HC) and carbon monoxide (CO) emission 
conversion efficiencies reached nearly 100 % after 50 s of starting the engine. For cold start conditions, the hydrocarbon 
(HC) and carbon monoxide (CO) emission conversion efficiencies reached 35 % and 80 %, respectively.
AU  - DİNLER, Nureddin
AU  - AKTAŞ, Fatih
AU  - KARAASLAN, SALIH
AU  - Yücel, Nuri
AU  - Taşkın, Sadullah
DO  - 10.47480/isibted.1025938
PY  - 2021
JO  - Isı Bilimi ve Tekniği Dergisi
VL  - 41
IS  - 2
SN  - 1300-3615
SP  - 239
EP  - 247
DB  - TRDizin
UR  - http://search/yayin/detay/522053
ER  -