Question

1. what is the difference between force, work, power?
2. what are the strokes in a four - stroke internal combustion engine? what is the difference between a gasoline and diesel engine?

Explanation:

1. In a four - stroke internal combustion engine, the four strokes are intake, compression, power, and exhaust. The intake stroke draws in a fuel - air mixture (in gasoline engines) or just air (in diesel engines). The compression stroke compresses the mixture or air. The power stroke is when combustion occurs and forces the piston down. The exhaust stroke expels the burned gases.
2. The main difference between a gasoline and diesel engine is in the fuel injection and combustion method. In a gasoline engine, a spark plug ignites a pre - mixed fuel - air mixture. In a diesel engine, air is compressed to a high temperature and pressure, and then diesel fuel is injected, self - igniting due to the high temperature of the compressed air.

Answer:

1. The four strokes in a four - stroke internal combustion engine are intake, compression, power, and exhaust.
2. The difference between a gasoline and diesel engine is that gasoline engines use spark - ignition of a pre - mixed fuel - air mixture, while diesel engines use compression - ignition where fuel is injected into highly compressed air.