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Session 3649

ENGINE AND DYNAMOMETER SYSTEM SERVICE AND FUEL CONSUMPTION MEASUREMENTS

Emin Yılmaz Department of Technology University of Maryland Eastern Shore Princess Anne, MD 21853 (410)651-6470 E-mail: eyilmaz@mail.umes.edu

Abstract

The goal of the “ETME 499-Independent Research in Mechanical Engineering Technology” course is to introduce students to designing, manufacturing, upgrading, repairing and testing mechanical systems. The goal of laboratory part of “EDTE 341-Power and Transportation” course is to service small and/or large internal combustion engines. The purpose of this project was to service the gasoline engine, the engine dynamometer attached to it, and carry out some engine performance tests. If successful, the engine performance testing will be incorporated into the “EDTE 341-Power and Transportation course” or the “ETME 301-Thermodynamics and Heat Power” course as one or more laboratory experiments. EDTE 341 and ETME 301 are technical elective and required courses, respectively, for Mechanical Engineering Technology (MET) students. The gasoline engine was disassembled and serviced as a requirement for the laboratory part of the EDTE 341 course. Servicing of the engine-dynamometer system was completed as an ETME 499 project. Instrumentation for the fuel consumption measurements were added and the measurements were carried out. The results indicate that, at constant load, as the engine speed was increased the fuel consumption increased. The same trend was seen at constant speed; the fuel consumption increased as the load was increased. Simulated fuel economy (miles/gal) graph indicate that the engine economy was about flat at higher loads, but, was decreasing slightly at low loads when the engine speed was increased beyond about 1500 rpm.

Introduction

The two engine-dynamometer systems, one with a gasoline engine (Fig.1) and the other one with a diesel engine came with the new building when the department has moved into it in 1985. Both engines have the same model dynamometers, they were purchased as sets from Megatech Corporation1. Since the systems were not frequently used, the author decided to overhaul the gasoline engine when he taught the “EDTE 341-Power and Transportation” course during the Proceedings of the 2004 American Society for Engineering Education Annual Conference & Exposition Copyright © 2004, American Society for Engineering Education

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Yilmaz, E., & Nagchaudhuri, A. (2004, June), Engine And Dynamometer System Service And Fuel Consumption Measurements Paper presented at 2004 Annual Conference, Salt Lake City, Utah. 10.18260/1-2--14088