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Automobile Engineering · all questions

Air Pollution and its Control in Automobile
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What is the purpose of crank case ventilation?

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Where EGR valve connected?

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A . . . . . . . . reduction of cold-start HC has been achieved.

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In a petrol fuel injected engine, the air and fuel are mixed in the

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Reduction of formation of pollutants is achieved by:

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Pune-based organisation . . . . . . . . conducted a study using a 15% M - 15 methanol blend in vehicles and tested them for 3,000 km to evaluate emissions in real-world conditions as well as to check the performance of the vehicles.

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Why are lead compounds added in petrol?

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Idling co-emission for all two and three wheeled petrol vehicles should not exceed . . . . . . . . by volume.

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More than 90 to 95% of carbon particles originally generated within an engine are thus converted to CO

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The exhaust of CI engines does not contain solid carbon soot particles that are generated in the fuel-rich zones within the cylinder during combustion.

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Which engine emits more amounts of nitrogen oxides (NOx)?

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EGR combines with the exhaust residual left in the cylinder from the previous cycle to effectively reduce the . . . . . . . . . combustion temperature.

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When scavenging is done, some of the air and fuel mix with the exhaust gases and are expelled out of the cylinder before the exhaust port closes.

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The main function of the intake manifold is that it

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EGR system recirculates a smallmetered amount of the inert exhaust gas back into the intake manifold:

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A single soot particle may contain up to . . . . . . . . carbon spheres.

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The liquid-vapour separator is located in the

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Why is the fumigation technique used?

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How do we achieve near zero emission diesel engines?

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Name the emission control technique when some amount of gases feed into the intake manifold of a running engine?

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