US PATENT SUBCLASS 324 / 378
INTERNAL-COMBUSTION ENGINE IGNITION SYSTEM OR DEVICE

Current as of: June, 1999
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324 /   HD   ELECTRICITY: MEASURING AND TESTING

378INTERNAL-COMBUSTION ENGINE IGNITION SYSTEM OR DEVICE {12}
379  DF  .~> With analysis of displayed waveform
380  DF  .~> Electronic ignition system {2}
383  DF  .~> By simulating or substituting for a component under test
384  DF  .~> Using plural tests in a conventional ignition system
385  DF  .~> Distributor {2}
388  DF  .~> Coil
389  DF  .~> Magneto
390  DF  .~> Low or high tension lead
391  DF  .~> Ignition timing {1}
393  DF  .~> In situ testing of spark plug {5}
400  DF  .~> Spark plug removed or tested in a test fixture {1}
402  DF  .~> Apparatus for coupling a measuring instrument to an ignition system

DEFINITION

Classification: 324/378

INTERNAL-COMBUSTION ENGINE IGNITION SYSTEM OR DEVICE:

(under the class definition) Subject matter relating to the testing of electrical systems and devices which cause the rapid combustion of a fuel in an internal-combustion engine.

(1) Note. This subclass includes, for example, means for testing spark plugs, spark plug wires, coils, distributor points, magnetos, ignition timing, etc.

SEE OR SEARCH CLASS

73, Measuring and Testing,

116+, for testing of engines which do not use an electrical ignition system, for example, diesel engine.

123, Internal-Combustion Engines,

146.5, for internal-combustion engine structure in combination with the ignition system under test.