Question

Briefly explain about various types combustion chamber designed
for SI engines?

Answer 1

There are different types of combustion chamber designs used in SI engines, including Turbulent Jet Ignition (TJI), Hemi Combustion Chamber, Swirl Combustion Chamber, and Multi-Valve Combustion Chamber.

Step-by-step explanation:

A combustion chamber in a spark ignition (SI) engine is the part where the air-fuel mixture is burned to produce power. There are different types of combustion chamber designs used in SI engines, including:

1. Turbulent Jet Ignition (TJI): In this design, the fuel is injected in the form of a jet that creates turbulence in the chamber, promoting better mixing of air and fuel.
2. Hemi Combustion Chamber: This design features a hemispherical shape that allows for efficient combustion and better flame propagation.
3. Swirl Combustion Chamber: In this design, the incoming air-fuel mixture is given a swirling motion, which helps in better mixing and combustion.
4. Multi-Valve Combustion Chamber: This design uses multiple valves to control the intake and exhaust of air-fuel mixture, allowing for better control and efficiency.

These different designs are used to optimize combustion in SI engines, aiming for better fuel efficiency, power output, and emissions control.