Samtech Instruments

The petrol engine model represents a petrol-powered engine that operates on a four-stroke cycle. It is designed to showcase the various components and stages of operation in a visually informative way.

The model typically includes the following key parts:

1. Cylinder: This represents the combustion chamber where the air-fuel mixture is ignited.
2. Piston: Moves up and down inside the cylinder to compress the air-fuel mixture, transfer power, and facilitate the intake and exhaust processes.
3. Crankshaft: Converts the linear motion of the piston into rotational motion, which is used to drive the vehicle’s wheels or power other mechanical systems.
4. Camshaft: Controls the opening and closing of the intake and exhaust valves through lobes or cams, ensuring precise timing and coordination.
5. Valves: Intake valves allow the air-fuel mixture to enter the cylinder, while exhaust valves release the burnt gases after combustion.
6. Connecting Rods: Connect the piston to the crankshaft, transmitting the reciprocating motion to rotational motion.
7. Timing Gears/Belt: Synchronize the crankshaft and camshaft rotation, ensuring the correct timing of valve operations.
8. Spark Plug: Provides the spark needed to ignite the air-fuel mixture in the combustion chamber during the power stroke.
9. Fuel System: Includes components like a carburettor or fuel injector to deliver the proper mixture of fuel and air to the engine.
10. Ignition System: Generates the spark necessary to ignite the fuel-air mixture in the combustion chamber.

The four strokes of the engine cycle—intake, compression, power, and exhaust—can be visually demonstrated using this model. When the crankshaft is rotated, the piston moves through these stages, showcasing the engine’s internal workings and sequential operation.

The petrol engine model provides an educational and illustrative tool for understanding the principles and components of a four-stroke petrol engine, making it valuable for students, enthusiasts, and those interested in learning about internal combustion engines.