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Title: Designing of a Carburettor Body for Ethanol Blended Fuel by using CFD Analysis tool and 3D Scanning Technology
Authors: Gupta, P
Haleem, A
Javaid, M
Keywords: Carburettor;CFX tool;Ethanol;Throttle plate;Solid works;Venture
Issue Date: Jul-2019
Publisher: NISCAIR-CSIR, India
Abstract: Carburettor plays a significant role in mixing air and fuel during suction for spark ignition (SI) engines. Some important factors which can affect the fuel consumption are design of carburettor, throttle valve angle and its position as well as the composition of ethanol in gasoline. Nowadays the carburettor is used only for bikes/motorcycles/generators. The design of carburettor is essential in maintaining the correct air-fuel ratio during running conditions. So, the carburettor design is improved in such a way that it can optimize the required air-fuel ratio by considering the current atmospheric temperature, mixing ethanol in high proportion with gasoline fuel to reduce the adverse effects on the environment. The purpose of this paper is to study the effects of throttle plate angle and its position on the volumetric efficiency of the engine and the impact on mass flow rate, pressure variation and temperature by mixing ethanol in fuel. Scanning of a working carburettor is done through COMET L3D Scanner and modelled it in SOLIDWORKS software by installing two throttle plates at the outlet of the carburettor venturi. Analysis of computational fluid dynamics for variation in mass flow rate and pressure distribution is performed by using ANSYS (CFX Tool) software. The paper finds the volumetric efficiency of the engine at different angles of the throttle plate and indicates the effects of the current atmospheric condition using ethanol-blended gasoline. The contribution of this paper lies in achieving a better fuel (gasoline & ethanol) economy by modelling the carburettor design by using split throttle plate.
Page(s): 466-472
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Appears in Collections:JSIR Vol.78(07) [July 2019]

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