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Petrol engines are sometimes also called constant volume engines. They suck in a combustible mixture of fuel and air, compress it and then ignite it with a spark plug. Combustion is so fast that (most of it) takes place while the volume of the compression chamber(in the cylinder, between piston and cylinder head) stays the same. Then, as the piston moves away from Top Dead Center (TDC) combustion is (mostly) done and the pressure begins to drop.
Diesel engines are also called constant pressure engines. They take in air, compress it to the point where the temperature alone will ignite the fuel, and then they inject the fuel. And fuel keeps being injected and burned as the piston moves away from TDC, keeping the pressure, kinda-sorta constant through the combustion phase.
What else can I help you with?
What is the difference between the diesel engine and gasoline engine?
One runs on diesel and the other on petrol. Click the link.
What is the major difference between a petrol car and a diesel one?
The primary difference between a petrol car and diesel car is the consumption rate - diesel and petrol are refined from mineral oil using differing methods. The result is diesel engines having a lower fuel consumption rate than their petrol counterparts when installed in a vehicle of similar mass. CO2 emissions are also lower in a diesel engine than they are in a petrol engine.
What is the weight difference between a diesel engine and a gas engine?
A diesel engine is heavier than a petrol engine because some parts in a diesel engine are made from cast iron such as cylinder sleeves etc. The weight difference is usually between 10-20kgs.
How do you distinguish between a petrol engine and diesel engine when they are not working?
If the engine has spark plug it is said to be petrol engine, and if it has a pump to inject fuel then it is diesel engine.
What is the different between petrol and diesel?
The difference is that diesel is more oily than petrol, and is cheaper to produce.
What is the difference between petrol and diesel engines?
diesel engines doesn't use spark plug but uses heater plug.petrol engines produces more torque than petrol engines but petrol engines produces more acceleration than diesel engines.petrol engine is faster to be heated than diesel engine.
What is the difference in bhp between petrol and diesel engines?
Both our internal combustion engines but the main difference is that a petrol engine uses spark plugs to ignite the fuel but a diesel engine has no spark plugs but instead uses compression to ignite the fuel. A diesel engine is also built much stronger than a gasoline/petrol engine. Diesel engines get better fuel mileage, last longer, and have much more torque or pulling power than a petrol engine. The only disadvantage to a diesel is the fact that it is more costly to build than a gasoline engine.
What is the difference between petrol car and disel car?
The petrol one uses petrol, and, wait for it, the diesel one uses diesel!
What is the difference between the burning temperature of diesel and petrol?
The burning temperature of diesel is higher than that of petrol. Diesel ignites at a higher temperature compared to petrol.
What is diffrent between a 5.7L hemi diesel engine and a regular diesel engine or a petrol engine?
There isn't a 5.7L Hemi diesel.
Why is petrol engine RPM is greater than diesel engine?
for same power diesel engine produces more torque @ less rpm whereas petrol engine produces less torque @more rpm this difference is due to different combustion processes of diesel and petrol
What is the difference between Cars motor and Cars engine?
a motor normally uses electricity and an engine usees petrol or diesel... correct if wrong please
