Automobile Engineering in ME
The aluminium alloy is used in cylinder blocks because

The piston is also made of aluminium alloy
It is lighter and has good heat dissipation characteristics
It does not require any cylinder liners
Material cost is low

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Automobile Engineering in ME
The path taken by intake air is

Air cleaner carburettor (or throttle body) intake manifold intake ports cylinders
Air cleaner intake manifold carburettor (or throttle body) intake ports cylinders
Carburettor (or throttle body) air cleaner intake manifold intake ports cylinders
Air cleaner carburettor (or throttle body) intake ports intake manifold cylinders

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