Differences between gasoline and diesel engine
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Gasoline (left) and diesel (right) automotive engines
The main differences between a gasoline engine and a diesel engine are as follows:
1) the moment when
combustion at constant pressure
combustion at constant volume
compression ratio
fuel is sprayed
idle speed adjustment
ignition a homogeneous
lower limit flammability
reference cycle
richness of the mixture
the electrodes of the spark plug
the fuel is introduced
into the combustion chamber: in a gasoline engine, it is premixed with the oxidizer (air) upstream of the intake valves, while it is injected into the diesel;
2) in a diesel
combustion at constant pressure
combustion at constant volume
compression ratio
fuel is sprayed
idle speed adjustment
ignition a homogeneous
lower limit flammability
reference cycle
richness of the mixture
the electrodes of the spark plug
the fuel is introduced
in the form of small droplets which ignite by self-ignition in the compressed air and at high pressure which is in the chamber, while in the gasoline engine the
combustion at constant pressure
combustion at constant volume
compression ratio
fuel is sprayed
idle speed adjustment
ignition a homogeneous
lower limit flammability
reference cycle
richness of the mixture
the electrodes of the spark plug
the fuel is introduced
fuel / oxidizer mixture is controlled: an electric arc is created between
combustion at constant pressure
combustion at constant volume
compression ratio
fuel is sprayed
idle speed adjustment
ignition a homogeneous
lower limit flammability
reference cycle
richness of the mixture
the electrodes of the spark plug
the fuel is introduced
;
3) The
combustion at constant pressure
combustion at constant volume
compression ratio
fuel is sprayed
idle speed adjustment
ignition a homogeneous
lower limit flammability
reference cycle
richness of the mixture
the electrodes of the spark plug
the fuel is introduced
of a diesel engine is much higher than that of a gasoline engine, which is limited by the condition of non-detonation of the mixture;
4) the
combustion at constant pressure
combustion at constant volume
compression ratio
fuel is sprayed
idle speed adjustment
ignition a homogeneous
lower limit flammability
reference cycle
richness of the mixture
the electrodes of the spark plug
the fuel is introduced
of each type of engine is theoretically different (
combustion at constant pressure
combustion at constant volume
compression ratio
fuel is sprayed
idle speed adjustment
ignition a homogeneous
lower limit flammability
reference cycle
richness of the mixture
the electrodes of the spark plug
the fuel is introduced
for gasoline, and
combustion at constant pressure
combustion at constant volume
compression ratio
fuel is sprayed
idle speed adjustment
ignition a homogeneous
lower limit flammability
reference cycle
richness of the mixture
the electrodes of the spark plug
the fuel is introduced
for diesel. However, in fast engines, the two cycles are very similar;
5) the
combustion at constant pressure
combustion at constant volume
compression ratio
fuel is sprayed
idle speed adjustment
ignition a homogeneous
lower limit flammability
reference cycle
richness of the mixture
the electrodes of the spark plug
the fuel is introduced
is much more economical in a diesel engine where the quantity of fuel injected can be reduced at will, while in a gasoline engine, the need to obtain a
combustion at constant pressure
combustion at constant volume
compression ratio
fuel is sprayed
idle speed adjustment
ignition a homogeneous
lower limit flammability
reference cycle
richness of the mixture
the electrodes of the spark plug
the fuel is introduced
above the
combustion at constant pressure
combustion at constant volume
compression ratio
fuel is sprayed
idle speed adjustment
ignition a homogeneous
lower limit flammability
reference cycle
richness of the mixture
the electrodes of the spark plug
the fuel is introduced
leads to a supply of fuel greater than the needs of the engine at idle.
Check
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