The efficiency(ration of power input to power output) of a Diesel Engine is proportional to difference in the initial and final temperature of the engine. Base on the equation of ideal gases for simplicity and better understanding
P1
V1 / T1 = P2
V2 / T2
T1
= Initial Temperature
P1
= Initial Pressure
V1
= Initial Volume
T2
= Final Temperature
P2
= Final Pressure
V2
= Final Volume
it only shows that the efficiency is also proportional to the ratio of final volume to the initial
volume of the air and fuel inside the engine chamber. The greater the compression ratio the engine
have, the greater the power is produce with respect to the fuel being used. In terms of efficiency,
Diesel engine produce more power than Gasoline engine with regards to the amount of fuel
being used. The main reason for this is because of the engines greater compression ratio, Diesel
engine has greater compression ration than Gasoline Engine. Because of Diesels greater compression
ratio, there came out some advantages and disadvantage about the Diesel engine in comparison to
Gasoline engine. One of the main advantages is the power produce is greater in Diesel Engine than
Gasoline Engine with regards to the fuel consumption. One of the main difference in the construction
in Diesel and Gasoline Engine is that in Gasoline Engine there is a the use of spark plug to ignite the
mixture of fuel inside the engines chamber, while is the Diesel Engine no spark plug is need, because
of the greater compression ratio the air inside the engine becomes to hot that once the fuel is injected
the fuel is automatically ignite. Spark plug ignition is Gasoline engine and air ignition in Diesel
engine.
image:http://www.myrctoys.com/engines/diesel.jpg
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