As much fun as horsepower might be, torque can be just as much fun. The more torque you have, the easier it will be to remove stumps from the ground. ‘ As a result, a diesel engine is most likely your preferred choice. A diesel engine’s torque is unmatched when compared to that of its gasoline cousin. What’s the reason behind this?
#1 Compression ratio
The compression ratio is the first factor to consider. During the combustion cycle of a gasoline engine, the piston goes up and down and comes to a halt just short of the top of the cylinder. In contrast, the piston of a diesel engine extends all the way to the cylinder’s edge. Due to the lack of spark plugs in the diesel engine, increasing compression and superheating the air-fuel combination is necessary for combustion.
#2 Fuel burning
The rate at which fuel burns is the next item on our list. Unlike gasoline engines, diesel engines can provide instantaneous power when the piston returns to its starting position. It takes a lot longer for combustion to get going in a gasoline engine because of this. The piston has already started moving away from the top of the cylinder. Greater torque is a result of the diesel’s increased speed.
#3 Cylinder stroke
Another factor to consider is the diameter of the bore and the stroke length. Torque is calculated by multiplying force by the distance traveled. The piston in a gasoline engine may have a larger bore, but because it travels less distance, the engine’s stroke is shorter. However, the diesel’s stroke length is longer (in part because of the additional travel at the end of the piston stroke), which increases the torque calculation distance. As a result, we typically have higher torque since the force goes a long distance.
Turbocharging is an important point to consider. Using this technology on current diesel engines is a common practice as diesel engines demand a lot of airflows. Turbochargers are integrated into diesel. By increasing the volume of air, greater force is generated. However, gas engines aren’t turbocharged as frequently as diesel engines.
#5 More Energy
It’s also worth noting that diesel fuel has a higher energy density than gasoline. It’s anything between 10% to 15% higher. The more energy you have, the more powerful you will be.
This video from Engineering Explained, we explain more about the fundamentals of diesel engines and how much torque they can generate. Watch the video to learn about some of the most advanced technology in the world.
You have got it wrong; I suggest you study automotive engineering at a professional level.
The difference is that petrol engines have combustion at “Constant volume”.
Diesel engine combustion occurs at “constant pressure.”
All of the fuel is in the cylinder with a petrol engine at the start of the compression stroke and it is completely burnt while the piston is at “Top Dead Centre”. Combustion occurring at “Constant Volume of the combustion chamber.”
At the start of the compression stroke in a Diesel engine there is only Air in the cylinder. This is compressed and the work done in compressing this air show as the rise in the air temperature. Just before “Top Dead Centre” Fuel is injected into this hot air mass and continues to be injected, depending on the load, until some point “After Top Dead Centre”.
Despite the piston descending and combustion chamber volume increasing, the pressure on the piston stays the same, because fuel is still been injected and burnt. Combustion is occurring under constant pressure”. Learn the Laws of Physics, particular “Charles and Boyles Law”.