Automobile Engineering in ME
The function of a first compression ring (top ring) is that it

Maintains a seal and prevents the fuel leakage
Maintains a seal and prevents escape of burned gases and loss of pressure in the combustion chamber
Creates swirl
Increases the combustion temperature

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Automobile Engineering in ME
The major purpose of an electronically controlled automatic transmission is that this type of transmission

Eliminates the gear shaft lever
Eliminates gear clutches
Reduces the number of automatic transmission components
Reduces shift shock and achieves more efficient transmission of engine torque

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