Spark plug for venting excessive pressure

Spark plug for venting excessive pressure

Spark plug function incorporated engine valve and valve mechanis

Spark plug heater control system for internal combustion engine

Spark plug heating for a spark ignited engine

Spark plug index plate for combustion engines

Spark plug thermal control

Spark plug ultrasound whistle

Spark plug with increased durability

Spark plug with integral retainer nut

Spark plugs for internal combustion engines

Spark unit for combustion-powered driving tool

Spark-plug for automobile internal combustion engine

Start aid for combustion engine

Stop auto theft

Switching circuit for ignition system

Synchronous rotor indexing mechanism

System and method for eliminating pocket sparking in an...

System and method to prevent accidental starting of a motor...

System for controlling ignition device for vehicle