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Optimization Design of Reducing Fuel Consumption for 4G6 Engine

Author: GuoBing
Tutor: YuXiuMin；SunLiBin
School: Jilin University
Course: Power Machinery and Engineering
Keywords: Gasoline Compression ratio Piston Rings Piston
CLC: TK402
Type: Master's thesis
Year: 2010
Downloads: 83
Quote: 0
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Abstract


With China's rapid economic development , the gap between supply and demand of oil resources is growing . Implementation of fuel tax so that the majority of users to further improve vehicle fuel economy requirements , to reduce the fuel consumption of passenger cars has become a trend . This context , the technological transformation of the original gasoline engine , improving power and economy , and to extend its market life becomes a very urgent . Competitive automotive market and a higher requirement on the vehicle and the engine plant , only the strong power, low fuel consumption of the engine will have a market living space . This topic improve engine compression ratio , to optimize the design of the piston and the piston rings and other measures to improve the 4G6 engine combustion efficiency , reducing mechanical losses . Design improvements and parts production is completed , the new engine re-calibration optimization , and through improved front and rear engine bench performance test and vehicle test experiment data to verify the effectiveness of the design . Finally, the following conclusions : 1 , increasing the compression ratio can effectively reduce engine fuel consumption and improve engine power . 2 , the optimized design of the piston can increase the thermal load of the piston , the mechanical load capacity ; Mitsubishi unique open V -shaped groove in the second ring shore technology and the use of the graphite coating can be sprayed in the skirt portion of the piston to reduce the loss of the friction pair ; reduced oil consumption . 3 , to optimize the design of low - tension piston rings group can effectively reduce the movement of the friction loss , engine mechanical efficiency , reduce fuel consumption . And enhanced scraping oil capacity of the piston ring pack , reduce engine oil consumption . Experimental verification engine optimized to achieve the the development target value , through the second stage of the GB fuel economy standards requirements .

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CLC: > Industrial Technology > Energy and Power Engineering > Internal combustion engine > General issues > Design, calculation
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