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Q2 It is proposed to design a crburettor for Maruti Car. The four strok petrol engine has a displacement (swept) of 796 cm³ and develops maximum Power at 5500 rev/min. The volumetric efficiency at this speed is assumed to be 70% and the air-fuel ratio is 13.5:1.It is expected that at peak power the theoretical air speed at the choke will be 105 m/s. the coefficient of discharge for the venturi is assumed to be 0.85 and that of the main petrol iet is 0.66. An allowance should be made for the emulsion tube, the diameter of which can be taken as 1/2.5) of the choke diameter. The petrol surface is 6mm below the choke at this engine condition. Calculate the sizes of a suitable choke and main jet. The specific gravity of petrol is 0.74. Atmospheric pressure and temperature are 1 bar and 27°C respectively. [Answers 21.3 mm, 1.183 mm ] .

Q2 It is proposed to design a crburettor for Maruti Car. The four strok petrol engine has a displacement (swept) of 796 cm³ and develops maximum Power at 5500 rev/min. The volumetric efficiency at this speed is assumed to be 70% and the air-fuel ratio is 13.5:1.It is expected that at peak power the theoretical air speed at the choke will be 105 m/s. the coefficient of discharge for the venturi is assumed to be 0.85 and that of the main petrol iet is 0.66. An allowance should be made for the emulsion tube, the diameter of which can be taken as 1/2.5) of the choke diameter. The petrol surface is 6mm below the choke at this engine condition. Calculate the sizes of a suitable choke and main jet. The specific gravity of petrol is 0.74. Atmospheric pressure and temperature are 1 bar and 27°C respectively. [Answers 21.3 mm, 1.183 mm ] .

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Q2 It is proposed to design a crburettor for Maruti Car. The four strok petrol engine has a displacement (swept) of 796 cm³ and develops maximum Power at 5500 rev/min. The volumetric efficiency at this speed is assumed to be 70% and the air-fuel ratio is 13.5:1.It is expected that at peak power the theoretical air speed at the choke will be 105 m/s. the coefficient of discharge for the venturi is assumed to be 0.85 and that of the main petrol iet is 0.66. An allowance should be made for the emulsion tube, the diameter of which can be taken as 1/2.5) of the choke diameter. The petrol surface is 6mm below the choke at this engine condition. Calculate the sizes of a suitable choke and main jet. The specific gravity of petrol is 0.74. Atmospheric pressure and temperature are 1 bar and 27°C respectively. [Answers 21.3 mm, 1.183 mm ] .
Transcribed Image Text:Q2 It is proposed to design a crburettor for Maruti Car. The four strok petrol engine has a displacement (swept) of 796 cm³ and develops maximum Power at 5500 rev/min. The volumetric efficiency at this speed is assumed to be 70% and the air-fuel ratio is 13.5:1.It is expected that at peak power the theoretical air speed at the choke will be 105 m/s. the coefficient of discharge for the venturi is assumed to be 0.85 and that of the main petrol iet is 0.66. An allowance should be made for the emulsion tube, the diameter of which can be taken as 1/2.5) of the choke diameter. The petrol surface is 6mm below the choke at this engine condition. Calculate the sizes of a suitable choke and main jet. The specific gravity of petrol is 0.74. Atmospheric pressure and temperature are 1 bar and 27°C respectively. [Answers 21.3 mm, 1.183 mm ] .
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