Selective asymmetric swirl intake port
Self locking valve guide
Self locking valve seat insert
Self-sealing rotary aspiration system for internal combustion en
Semi-rotating valve assembly for use with an internal...
Shielded valve
Shrouded valve for internal combustion engine
Shutter valve system for internal combustion engines
Sintered alloy valve seat and method for manufacturing the same
Sleeve-type rotary valve for an internal combustion engine
Sliding stem seal, particularly for valve stems
Slotted cylindrical tube rotary valve assembly
Spark ignition engine having combustion chamber provided with ve
Spark ignition engine using lean air-fuel mixture
Spark-ignition engine for lean air-fuel mixture
Spherical rotary engine valve
Spherical rotary engine valve assembly
Spherical rotary intake valve for spherical rotary valve...
Spherical rotary valve
Spherical rotary valve assembly for an internal combustion engin