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Consider the following statements with regard to IC engines: 1. For best fuel economy of spark ignition engines, the fuel-air mixture should be lean 2. With supercharging, the specific consumption in compression ignition engines increases 3. With increase of load, knocking tendency in compression ignition engines increases Which of the above statements are correct?
In petrol engines, advancing of the spark timing will _________ the knocking tendency.
Which of the following factors can control detonation in spark ignition engines? 1. Increasing engine rpm 2. Advancing spark timing 3. Making fuel-air ratio very rich
Consider the following statements pertaining to supercharging of engines: 1. The power output for a given engine increases 2. The loss of power due to altitude is compensated 3. The increase in supercharging pressure decreases the tendency to detonate in spark ignition engines 4. The mechanical efficiency of supercharged engines is quite high compared to naturally aspirated engines Which of the above statements are correct?
In spark ignition engines, the knocking tendency can be decreased by ______________
The knocking tendency in spark ignition engines can be decreased by adding dopes like tetra ethyl lead and ethylene dibromide.
The knocking tendency in spark ignition engines may be decreased by
In order to prevent knocking in spark ignition engines, the charge away from the spark plug should have
The higher combustion chamber wall temperature in compression ignition engines will _________ knocking tendency.
With increase in __________ Knocking tendency in a spark ignition petrol engine decreases.