More
Less
Same
May be more or less depending on engine capacity
B. Less
0
50
100
120
180°
125°
235°
200°
Paraffin, aromatic, napthene
Paraffin, napthene, aromatic
Napthene, aromatics, paraffin
Napthene, paraffin, aromatic
Calorific value of oil
Low heat value of
High heat value of oil
Mean heat value of oil
Beginning of suction stroke
End of suction stroke
Beginning of exhaust stroke
End of exhaust stroke
Pre-ignition
Detonation
Ignition delay
Auto-ignition
Increase efficiency
Increase power
Reduce weight and bulk for a given output
Effect fuel economy
Yes
No
To some extent
Unpredictable
Using additives in the fuel
Increasing the compression ratio
Adherence to proper fuel specification
Avoidance of overloading
Petrol, air and lubricating oil
Air and diesel
Petrol and lubricating oil
Petrol and air
V₁/(V₀ + V₁)
V₀/(V₀ + V₁)
2V₀/(V₀ + V₁)
2V₁/(V₀ + V₁)
Not effected
Decrease
Increase
None of these
Air only
Diesel only
A mixture of diesel and air
None of these
Equal to
Less than
Greater than
None of these
Not effect
Decrease
Increase
None of these
Fuel tank capacity
Lube oil capacity
Swept volume
Cylinder volume
Temperature and pressure in the cylinder at the time of injection
Nature of the fuel mixture strength
Relative velocity between the fuel injection and air turbulence pressure of residual gases
All of the above
Transformer
D.C. generator
Capacitor
Magnetic circuit
10 bar
20 bar
25 bar
35 bar
10 : 1
15 : 1
20 : 1
25 : 1
80°C
120°C
180°C
240°C
High self ignition temperature
Low volatility
Higher viscosity
All of these
More efficient
Less efficient
Equally efficient
Other factors will decide it
10 bar
100 bar
150 bar
500 bar
ηm = B.P/I.P
ηm = I.P/B.P
ηm = (B.P × I.P)/100
None of these
Starts at 40° after bottom dead centre and ends at 10° before top dead centre
Starts at 40° before top dead centre and ends at 40° after top dead centre
Starts at top dead centre and ends at 40° before bottom dead centre
May start and end anywhere
Cetane number
Octane number
Calorific value
None of these
Flat
Contoured
Slanted
Depressed
4-6 kg/cm² and 200-250°C
6-12 kg/cm² and 250-350°C
12-20 kg/cm² and 350-450°C
20-30 kg/cm² and 450-500°C
Is lighter
Requires smaller foundations
Consumes less lubricating oil
All of these