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PERFORMANCE OF GASOLINE/LPG BI-FUEL ENGINE OF MANIFOLD ABSOLUTE PRESSURE SENSOR (MAPS) VARIATIONS FEEDBACK

Setiyo, Muji and Waluyo, Budi and Willyanto, and Husni, M (2016) PERFORMANCE OF GASOLINE/LPG BI-FUEL ENGINE OF MANIFOLD ABSOLUTE PRESSURE SENSOR (MAPS) VARIATIONS FEEDBACK. ARPN Journal of Engineering and Applied Sciences, 11 (7). pp. 4707-4712. ISSN 1819-6608

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        Abstract

        Liquefied Petroleum Gas (LPG) is an alternative fuel in spark ignited premix combustion engine and emissions from LPG engines are lower than those in gasoline engines. This article presents a novel method of changing the ignition curve in an LPG/Gasoline bi-fuel engines which still use the converter and mixer models. The goal of this research was to get the best engine power in fuel operating mode both gasoline and LPG. It is known that the gasoline and LPG have different properties, especially burning speeds. In order to obtain optimum engine performance in both fuels, there should be two ignition curves, one for gasoline and the other for LPG. A circuit Simple Electronic Spark Module (SESM) was applied to manipulate the feedback voltage from a Manifold Absolute Pressure Sensor (MAPS). In the gasoline mode when idle, feedback from the MAPS was 1.4 volts. In this study, the standard ignition curve was maintained for the gasoline operation mode, whereas, in the LPG operation mode, feedback from MAPS was varied at 1.4; 1.2; 1.0; 0.8; and 0.6 volts at idling respectively. The Toyota 5A-FE engine was tested on a chassis dynamo meter to confirm the performance of the circuit. Test results show that the feedback of 0.8 volts produced the best power when the engine running on LPG.

        Item Type: Article
        Uncontrolled Keywords: Bi-Fuel engine, MAPS feedback, SESM, engine performance
        Subjects: T Technology > TJ Mechanical engineering and machinery
        Divisions: Faculty of Industrial Technology > Mechanical Engineering Department
        Depositing User: Admin
        Date Deposited: 14 Apr 2016 18:07
        Last Modified: 12 Oct 2018 06:54
        URI: http://repository.petra.ac.id/id/eprint/17333

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