Nonresonant type knock sensor
Octane measuring
Octane number measuring system
Octane number measuring system
Optical combustion event sensor structure particularly knock sen
Optical combustion sensor system
Optical combustion sensor, particularly for use with internal co
Optical engine knock sensor
Oscillation sensor, particularly combustion engine knock sensor
Piezoelectric engine-knock sensor
Piezoelectric knock sensor
Piezoelectric pick-up device for internal combustion engine
Piezoelectric resonance type knock sensor for internal combustio
Portable apparatus for testing an internal combustion engine
Pre-ignition detector
Prefabricated laboratory unit and octane analyzer
Preignition detection apparatus
Pressure sensor apparatus for measuring pressures including...
Pressure sensor apparatus for measuring pressures including...
Pressure sensor for an internal combustion engine