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A Study Of Liquefied Gas System Effects On Internal Combustion Engines

Ridhwan, Jumaidin (2009) A Study Of Liquefied Gas System Effects On Internal Combustion Engines. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Liquefied Petroleum Gas (LPG) is petroleum derived gas that mostly used for cooking in Malaysia. Other than that, LPG also used as alternative fuel for vehicles in certain country but not yet in Malaysia. Due to the difference in chemical nature, the engine might affected by its usage. Thus, a study on LPG effects on internal combustion petrol engine is carried out in order to find out the effects on engine system which generally covers area in performance, emission, and engine component. A performance measurement test was conducted by using dynamometer on cars with LPG system and the emission test was conducted using gas analyzer by measuring the exhaust gas before and after catalytic converter. Component check was conducted on spark plug by measuring the gap between electrode and by observing the discoloration on the ceramic and electrodes. All the tests were conducted by taking petrol measurement as the controlled variable for comparison purpose. The results shows that engine fuelled with LPG suffer power and torque loss but still comparable to existing performance. As for emission, LPG produced obviously lower Carbon Monoxide (CO) emission and a comparable hydrocarbon (HC) emission which are higher than petrol at low speed range and lower than petrol at higher speed range. The component check shows that LPG produces less carbon deposit to the spark plug as compare to petrol and there is no alteration on the distance between electrodes for both fuels after the test. Due to various limitations on equipments and facilities, the test could not be performed in wider range to get wider information, thus more comprehensive equipment and facilities should be prepared well in order to obtain excellent and wider results in more accurate and more reliable ways.

Item Type: Monograph (Project Report)
Uncontrolled Keywords: Valves -- Design and construction, Internal combustion engines -- Valves
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Library > Projek Sarjana Muda > FKM
Depositing User: Nooraidillah Rasdi
Date Deposited: 21 Jun 2012 10:26
Last Modified: 28 May 2015 02:36
URI: http://eprints.utem.edu.my/id/eprint/3687

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