The Engine Power and the Exhaust Gas Emissions on an Outboard Engine

Prof. Charalampos Arapatsakos
Department of Production and Management Engineering
Democritus University of Thrace
V. Sofias Street, 67100, Xanthi
GREECE
E-mail: xarapat@pme.duth.gr
 

Abstract: Outboard engine is a propulsion system for small boats to speedboats. It’s consisted of a self contained unit that includes the engine, a gearbox and a propeller. It is called outboard because its entire structure remains on the boat exterior. The primary difference of an outboard engine in operation to other small engines is the inclusion of a driveshaft and propeller and cooling system which relies on water rather than air. Regarding on engine burning times, it is called two or four stroke engine. Each of these two types of engine have their own advantages and disadvantages. However, the most popular type of engine is the four stroke one due to its technological development. Particularly, the propulsion system of the four stroke engine has been designed to be placed on the vessels’ transom and it is consisted of a self contained unit that includes the engine, a gearbox and a propeller. In addition to movement outboard engines provide steering control of the boat, as they are designed to rotate on their mounting material and thus control the direction of thrust. The aim of this work, it was built a construction that allows the function of an outboard engine in conditions similar to the factual. In order to measure the performance of the engine power, a prototype measurement procedure was developed. According to this procedure the measurement of the force is made by a direct connection between the engine’s rpm and applied load. During the measurements operating characteristics of the engine, as well as the exhaust gases, were recorded. For the measurement of the emitted pollutants, a laboratory protocol and measurement standards defined by 40 CFR 1045 were used.

Short biography: Dr Charalampos Arapatsakos is a Greek citizen, who has been born in Athens. He has studied Mechanical Engineering and PhD. He is Professor on Democritus University of Thrace in Greece. Prof C. Arapatsakos has participated in many research programs about renewable sources of energy, gas emissions and antipollution technology. His research domains are mainly on biofuels and their use in internal combustion engines, the power variation from the use of biofuels, the gas emissions, mechanical damages, internal combustion engines, antipollution technology, renewable sources of energy, gas emissions, vehicle design, elements of machines, resistance of materials, technical mechanics, heat transmission.