Two-Stroke Engine Design With Selective Exhaust Gas Recirculation - a Concept

978493

10/27/1997

Event
Small Engine Technology Conference & Exposition
Authors Abstract
Content
High unburned hydrocarbon emissions and poor fuel consumption arise in a carburetted two-stroke engine because of its scavenging process. Time resolved hydrocarbon concentration at the exhaust port has shown a definite trend in concentration of unburned hydrocarbon with respect to crank angle. This paper discusses an exhaust gas recirculation system designed to trap fraction of the exhaust gas that is rich in short circuited fresh charge. In this design, the differential pressure between the crankcase and the exit at the exhaust port is communicated with each other at the appropriate time through passages in the piston and the cylinder block. The design is thus capable of selectively trapping and recirculating fraction of the exhaust gas rich in short circuited fresh charge back into the cylinder for combustion. Experimental results of other researchers related to time resolved exhaust gas constituents, and performance of two-stroke engine with the selective exhaust gas recirculation are also discussed.
Meta TagsDetails
DOI
https://doi.org/10.4271/978493
Pages
8
Citation
Mavinahally, N., Kamo, R., and Ganesan, V., "Two-Stroke Engine Design With Selective Exhaust Gas Recirculation - a Concept," SAE Technical Paper 978493, 1997, https://doi.org/10.4271/978493.
Additional Details
Publisher
Published
Oct 27, 1997
Product Code
978493
Content Type
Technical Paper
Language
English