Method for measuring the proportion of particles in the...

Method of detecting spark plug fouling and ignition system...

Method of informing pilot of aircraft of spark detected in...

Method of monitoring an internal combustion engine ignition syst

Misfire detecting device

Misfire detecting device for gasoline internal combustion engine

Misfire detecting device for internal combustion engine

Misfire detecting device for internal combustion engine

On-board internal combustion engine spark plug efficiency visual

Preignition detecting method

Preignition warning device

Process and apparatus for recognizing ignition failures in...

Spark intensity transient peak voltmeter for secondary ignition

Spark monitor and kill circuit

Spark plug firing sensor with capacitive coupling and optical pi

Spark plug ignited engine analyzing device and method

Spark plug tester

Spark plug testing under dynamic load

Spark plug voltage detector probe having a replaceable cable fix

Spark tester for a gas cooking appliance