In our previous article on Pros & cons of buying diesel vs gasoline cars in the Philippines, we have discussed upsides and downsides of diesel and gasoline vehicles which depend mostly on the purpose of use with comparisons of maintenance cost, or filling fee, etc.
Our today's article on Philkotse.com will dig deeper into the working principle and the functional parts of each engine to give you a clearer idea of what has been claimed in the article above.
Diesel engines use diesel to operate. This engine doesn’t have a spark plug and produces work by the process of pressurizing a mixture of fuel and air in the cylinder. Meanwhile, gasoline engine uses gas as fuel. It produces work by burning the fuel with air in the cylinder.
Diesel engine saves you more money on fuel
Petrol (Gasoline) Engine vs Diesel Engine
|Intake||Suck the air into the cylinder||Suck the mixture of air and gasoline into the cylinder|
Compress air under high pressure and temperature:
P = (30-35) Kg/cm2
T = (500-600)°C
At the end of the compression stroke, diesel is injected prematurely into the combustion chamber.
Compress fuel-air mixture under lower pressure and temperature:
P = (8-10) Kg/cm2
T = (200-300)°C
At the end of the compression stroke, the spark ignites the fuel-air mixture.
|Combustion||Injected fuel is mixed with air and self-ignite under high pressure and temperature. The burning mixture expands and produces work for the engine.||The spark plug ignites the fuel-air mixture inside the cylinder. The burning mixture expands and produces work for the engine.|
|Exhaust||Burnt gas expelled through the exhaust valve.||Burnt gas expelled through the exhaust valve.|
In conclusion, each engine has its own pros and cons. The gasoline engine gives smooth rides, while the diesel engine is powerful and economic. The decision on what engine to use should be, again, based on the purpose and preference of the user.
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