Classification of internal combustion engine?

Internal combustion engines can be classified based on various factors such as fuel type, ignition system, number of strokes, and arrangement of cylinders. Here are some common classifications of internal combustion engines:

1. Based on fuel type:
- Gasoline engines: These engines use gasoline as fuel and are commonly found in passenger cars and motorcycles.
- Diesel engines: These engines use diesel fuel and are commonly found in trucks, buses, and some passenger cars.

2. Based on ignition system:
- Spark-ignition engines: These engines use a spark plug to ignite the air-fuel mixture in the combustion chamber. Gasoline engines are typically spark-ignition engines.
- Compression-ignition engines: These engines rely on the heat generated by compressing the air-fuel mixture to ignite the fuel. Diesel engines are compression-ignition engines.

3. Based on number of strokes:
- Two-stroke engines: These engines complete the intake, compression, power, and exhaust strokes in just two movements of the piston.
- Four-stroke engines: These engines complete the intake, compression, power, and exhaust strokes in four movements of the piston.

4. Based on arrangement of cylinders:
- Inline engines: The cylinders are arranged in a straight line.
- V engines: The cylinders are arranged in a V shape.
- Flat engines: The cylinders are arranged horizontally in two banks.

These are just a few common classifications of internal combustion engines. There are many other factors that can be used to classify these engines, such as cooling system, valve configuration, and engine size.

Classification of Internal Combustion Engines

A. Based on Fuel Type
- Gasoline Engines: Use gasoline as fuel.
- Diesel Engines: Use diesel fuel as fuel.
- Natural Gas Engines: Use natural gas as fuel.
- Propane Engines: Use propane as fuel.
- Alcohol Engines: Use alcohol (e.g., ethanol, methanol) as fuel.

B. Based on Cycle
- Four-Stroke Engines: Complete the combustion process in four strokes (intake, compression, power, exhaust).
- Two-Stroke Engines: Complete the combustion process in two strokes (intake/compression, power/exhaust).

C. Based on Cylinder Arrangement
- In-line Engines: Cylinders arranged in a single line.
- V-Configuration Engines: Cylinders arranged in two banks at an angle to each other (e.g., V6, V8).
- Radial Engines: Cylinders arranged in a circle around the crankshaft.
- Opposed Engines: Cylinders arranged in two banks facing each other.

D. Based on Ignition System
- Spark Ignition (SI) Engines: Use an external spark plug to initiate combustion.
- Compression Ignition (CI) Engines: Rely on the heat of compression to ignite the fuel.

E. Based on Fuel Injection System
- Port Fuel Injection (PFI): Fuel is injected into the intake port.
- Direct Fuel Injection (DFI): Fuel is injected directly into the combustion chamber.

F. Based on Valve Actuation
- Overhead Cam (OHC) Engines: Use a camshaft located in the cylinder head to actuate the valves.
- Over-Head Valve (OHV) Engines: Use a camshaft located in the engine block and pushrods to actuate the valves.

G. Based on Cooling System
- Air-Cooled Engines: Use air to cool the engine.
- Liquid-Cooled Engines: Use a liquid (e.g., water, coolant) to cool the engine.

H. Other Classifications
- Turbocharged Engines: Use a turbocharger to increase air intake and enhance power.
- Supercharged Engines: Use a supercharger to increase air intake and enhance power.
- Rotary Engines: Use a triangular rotor that spins inside an oval-shaped chamber instead of pistons.
- Diesel Hybrid Engines: Combine a diesel engine with an electric motor to improve fuel efficiency.