Ion sensor bulb-shaped glow plug assembly
First Claim
1. A glow plug assembly comprising:
- a shell for attachment to a cylinder head of a compression ignition engine and having a passageway extending axially therethrough;
an insulator disposed at least partially in said passageway of said shell and having an aperture extending axially therethrough; and
a glow bulb made of an insulative material and including a heating element disposed therein, said glow bulb extending through said aperture and into said passageway of said shell and operatively connected to a source of power to create a heating circuit.
1 Assignment
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Accused Products
Abstract
An ion sensor glow plug assembly includes a shell for attachment to a cylinder head of a compression ignition engine and having a passageway extending axially therethrough. The ion sensor glow plug assembly also includes an insulator disposed at least partially in the passageway of the shell and having an aperture extending axially therethrough. The ion sensor glow plug assembly includes a glow bulb made of an insulative material and including a heating element disposed therein. The glow bulb extends through the aperture and into the passageway of the shell and is operatively connected to a source of power to create a heating circuit. The ion sensor glow plug assembly further includes a conductive material extending axially along the glow bulb and operatively connected to a source of power to create an ion sensing circuit.
11 Citations
20 Claims
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1. A glow plug assembly comprising:
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a shell for attachment to a cylinder head of a compression ignition engine and having a passageway extending axially therethrough;
an insulator disposed at least partially in said passageway of said shell and having an aperture extending axially therethrough; and
a glow bulb made of an insulative material and including a heating element disposed therein, said glow bulb extending through said aperture and into said passageway of said shell and operatively connected to a source of power to create a heating circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An ion sensor glow plug assembly for a compression ignition engine comprising:
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a shell for attachment to a cylinder head of a compression ignition engine and having a passageway extending axially therethrough;
an insulator disposed at least partially in said passageway of said shell and having an aperture extending axially therethrough; and
a glow bulb made of an insulative material and including a heating element disposed therein, said glow bulb extending through said aperture and into said passageway of said shell and operatively connected to a source of power to create a heating circuit; and
a conductive material extending axially along said glow bulb and operatively connected to a source of power to create an ion sensing circuit. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. An ion sensor glow plug assembly for a diesel engine comprising:
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a shell for attachment to a cylinder head of a compression ignition engine and having a passageway extending axially therethrough;
an insulator disposed at least partially in said passageway of said shell and having an aperture extending axially therethrough; and
a bulb made of an insulative material and having a bulb portion and a stem portion, said bulb including a heating element disposed in said bulb portion and a first electrode and a second electrode connected to said heating element and extending axially through said stem portion, said stem portion extending through said aperture and into said passageway of said shell and said first electrode and said second electrode being operatively connected to a source of power to create a heating circuit; and
a conductive material forming an ion sensing area at a tip of said bulb portion and an ion sensing stripe extending axially along said bulb portion and said stem portion and operatively connected to a source of power to create an ion sensing circuit.
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Specification