In Diesel engines, the control of black smoke in the exhaust can be achieved by:
1. Running the engine at lower load.
2. Maintaining the injection system perfect.
3. Using Diesel fuel of higher Cetane number.
Which of the above statements are correct?

What is the purpose of crank case ventilation?

A. To prevent pressure build up

B. To prevent temperature build up

C. To increase the blow by gas

D. To reduce the combustion leak

Where EGR valve connected?

A. Exhaust system and intake system

B. Crank case and intake system

C. Crank case and exhaust system

D. Exhaust system and catalytic converter

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

A. 20%

B. 30%

C. 35%

D. 40%

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

A. Throttle body

B. Intake manifold chamber

C. Intake ports

D. Combustion chambers