The air-fuel ratio of the petrol engine is controlled by
The purpose of carburetion is to provide a combustible mixture of fuel and air in the required quantity and quality for efficient operation
The petrol from tank to the automotive engine is fed by
The level of fuel in the float chamber of carburettor as compared to the level of the jet in the venture is
To avoid overflow of fuel through jet, the level of the liquid in the float chamber is maintained at a level slightly below the tip of the discharge jet.
The most preferred type of carburettor is
All of the following carburettors are constant choke type except
S. U. carburettor differs completely from all because it is constant vacuum or constant depression type with automatic variable choke.
In passenger cars, the following type of carburettor is preferred
Advantages of downward draught carburettor:
• No fuel lifting by air friction
• At low air velocity, fuel comes into cylinder by gravity
• High engine speed due to large mixing
• High specific output
During idling state, gasoline does not flow through the carburettor tube because of
The float in the carburettor of a .petrol engine controls
if the amount of fuel in the float chamber falls below the designed level, the float goes down, thereby opening the fuel supply valve and admitting fuel. So, float maintains a constant level of gasoline in the float chamber.
An adjustment in the setting of a carburettor has been made for running the petrol engine at mean sea level. What will be the quality of mixture supplied to the engine if it is made to operate at high altitudes?
Which unit is most susceptible to fuel lock in petrol engines?