The injector nozzle of a compression ignition engine is required to inject fuel at a sufficiently high pressure in order to

Internal Combustion Engines
The injector nozzle of a compression ignition engine is required to inject fuel at a sufficiently high pressure in order to

Ensure that penetration is not high

All of these

Inject fuel in a chamber of high pressure at the end of compression stroke

Inject fuel at a high velocity to facilitate atomization

Ensure that penetration is not high

All of these

Inject fuel in a chamber of high pressure at the end of compression stroke

Inject fuel at a high velocity to facilitate atomization

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Internal Combustion Engines
The knocking tendency in spark ignition engines may be decreased by

Controlling the exhaust temperature

Controlling the air-fuel mixture

Controlling the ignition timing

Reducing the compression ratio

Controlling the exhaust temperature

Controlling the air-fuel mixture

Controlling the ignition timing

Reducing the compression ratio

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Internal Combustion Engines
Pre-ignition is caused by the spontaneous combustion of the mixture before the end of the compression stroke, and is due to

Red hot carbon deposits on cylinder walls

Cylinder walls being too hot

Any one of the listed here

Overheated spark plug points

Red hot carbon deposits on cylinder walls

Cylinder walls being too hot

Any one of the listed here

Overheated spark plug points

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Internal Combustion Engines
It the temperature of intake air in IC engines is lowered, then its efficiency will

Decrease

Remain same

Increase up to certain limit and then decrease

Increase

Decrease

Remain same

Increase up to certain limit and then decrease

Increase

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Internal Combustion Engines
In a four stroke cycle petrol engine, the expansion

Starts at 30° after top dead center and ends at 50° after bottom dead center

Starts at top dead center and ends at bottom dead center

May start and end anywhere

Starts at 30° before top dead center and ends at 50° before bottom dead center

Starts at 30° after top dead center and ends at 50° after bottom dead center

Starts at top dead center and ends at bottom dead center

May start and end anywhere

Starts at 30° before top dead center and ends at 50° before bottom dead center

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Internal Combustion Engines
The cetane (Câ‚â‚†Hâ‚ƒâ‚„) which is a straight chain paraffin, is assigned a cetane number of

100

120

50

100

120

50

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Internal Combustion Engines

Internal Combustion Engines The injector nozzle of a compression ignition engine is required to inject fuel at a sufficiently high pressure in order to

Internal Combustion Engines The knocking tendency in spark ignition engines may be decreased by

Internal Combustion Engines Pre-ignition is caused by the spontaneous combustion of the mixture before the end of the compression stroke, and is due to

Internal Combustion Engines It the temperature of intake air in IC engines is lowered, then its efficiency will

Internal Combustion Engines In a four stroke cycle petrol engine, the expansion

Internal Combustion Engines The cetane (Câ‚â‚†Hâ‚ƒâ‚„) which is a straight chain paraffin, is assigned a cetane number of

Internal Combustion Engines
The injector nozzle of a compression ignition engine is required to inject fuel at a sufficiently high pressure in order to

Internal Combustion Engines
The knocking tendency in spark ignition engines may be decreased by

Internal Combustion Engines
Pre-ignition is caused by the spontaneous combustion of the mixture before the end of the compression stroke, and is due to

Internal Combustion Engines
It the temperature of intake air in IC engines is lowered, then its efficiency will

Internal Combustion Engines
In a four stroke cycle petrol engine, the expansion

Internal Combustion Engines
The cetane (Câ‚â‚†Hâ‚ƒâ‚„) which is a straight chain paraffin, is assigned a cetane number of