초록 ▼

A method and apparatus for testing spark plugs and ignition coils. An apparatus includes a power supply for supplying power to an ignition coil to generate a spark across a spark plug. A capture circuit captures an energy signal reflected from the ignition coil in response to the spark. A comparator

A method and apparatus for testing spark plugs and ignition coils. An apparatus includes a power supply for supplying power to an ignition coil to generate a spark across a spark plug. A capture circuit captures an energy signal reflected from the ignition coil in response to the spark. A comparator circuit compares the captured energy signal to a predetermined signal. A method includes the steps of supplying power to an ignition coil to generate a spark across a spark plug, capturing an energy signal reflected from the ignition coil in response to the spark and comparing the captured energy signal to a predetermined signal. The predetermined signal represents one of a distinct group of reflected energy signals which indicate various defects in the coil or plug. Preferably, a match between the captured energy signal and the predetermined signal is used to indicate to the user a defective coil or plug.

대표청구항 ▼

1. An apparatus for testing at least one ignition coil and at least one spark plug in a spark-ignition engine where said engine has one of a single ignition coil with a plurality of connected spark plugs and a plurality of ignition coils with a single spark plug per coil, the apparatus comprising:a

1. An apparatus for testing at least one ignition coil and at least one spark plug in a spark-ignition engine where said engine has one of a single ignition coil with a plurality of connected spark plugs and a plurality of ignition coils with a single spark plug per coil, the apparatus comprising:a power supply for supplying power to each ignition coil to generate a spark across each associated spark plug; at least one capture circuit for capturing an energy signal reflected from each ignition coil in response to said spark generation, each capture circuit positioned between the power supply and each ignition coil for a particular engine to be tested; and a comparator circuit for comparing said captured energy signal to a predetermined signal.