Ignition system test/diagnostic instrument

Electricity: measuring and testing – Internal-combustion engine ignition system or device – Spark plug removed or tested in a test fixture

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73118, G01M 1500

Patent

active

045701245

ABSTRACT:
A portable self-contained ignition system test diagnostic instrument for testing single cylinder and multi-cylinder spark ignited engines is disclosed comprising a housing having an interior spark chamber, a transparent portion permitting visual observation of the spark chamber, an outer portion performing an exterior air pump chamber, and an air passageway connecting the outer portion and the spark chamber, a reciprocal air pump movably mounted about the outer portion of the housing to form an air pump chamber therebetween for pumping compressed air through the air passageway to pressurize the spark chamber upon reciprocation of the pump, a check valve connected to the air passageway, a spark plug having a pair of electrodes forming a spark gap of predetermined size and mounted to the housing so that the spark gap is positioned within the spark chamber and visible through the transparent housing, a ground wire for detachably grounding the spark plug to an engine ground point, and a pressure gauge for indicating pressure within the spark chamber.

REFERENCES:
patent: 1743881 (1930-01-01), Cole

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