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http://dx.doi.org/10.5916/jkosme.2016.40.9.756

A Study on Performance Characteristics of the Developed Fuel Pump for a Single-cylinder Four-stroke Agricultural Diesel Engine  

Bae, Myung-whan (Engineering Research Institute, Department of Mechanical Engineering for Production, Gyeongsang National University)
Lee, Sang-hae (School of Mechanical Engineering, Graduate School, Gyeongsang National University)
Jung, Hwa (Department of Computer Applied Mechanical, Jinju Campus of Korea Polytechnic College)
Abstract
The objective of this study is to design and manufacture a fuel pump with the plunger diameter of 4 mm and stroke of 7 mm that can be mounted in a small single-cylinder four-stroke agricultural diesel engine, and to investigate the performance characteristics of the pump. The combustion pressure in a cylinder was reproduced by forming the back pressure of 1, 6, 11, 16 and 21 bar with a nitrogen gas in the home-manufactured modeling cylinder. In the experiment, the discharge pressure was measured at the spot of 1 cm away from the discharge port of a developed fuel pump. The delivery pressure and delivery flow rate were measured at the spot of 30 cm away from the discharge port of the pump, and the pump efficiency was calculated. The pump motor speed was changed from 600 to 800, 1000, 1200 and 1400 rpm. It is found that the delivery feed rate of fuel pump is increased as the rotational speed is raised, and is decreased as the back pressure, compression pressure in the cylinder, is increased. Also, the pump efficiency is reduced as the rotational speed and back pressure are increased.
Keywords
Fuel pump; Single-cylinder four-stroke agricultural diesel engine; Performance characteristics; Pump efficiency; Delivery feed rate; Discharge and delivery pressures;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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