Combustion pressure sensor arrangement
First Claim
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1. A combustion pressure sensor arrangement in an internal combustion engine having a cylinder head, comprising:
- a plug seating formed in the cylinder head;
an annular pressure sensor;
an ignition plug screwed into the cylinder head in such a manner that said pressure sensor is clamped between said ignition plug and said plug seating;
an ignition plug accommodation hole formed in the cylinder head for accommodating therein said ignition plug; and
a guide sleeve joined at one end thereof to the outer periphery of said pressure sensor and fitted in said ignition plug accommodation hole, wherein said one end of said guide sleeve is fitted on the outer periphery of said pressure sensor.
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Abstract
A guide sleeve is joined at an end thereof to the outer periphery of an annular pressure sensor and fits in an ignition plug accommodation hole. The pressure sensor is clamped between an ignition plug and a plug seating at the bottom of the ignition plug accommodation hole. The guide sleeve projects at the other end thereof from the ignition plug accommodation hole and mounts at the other end thereof an annular sealing member which has opposite axial ends brought into sealing contact with a cylinder head and a protective boot fitted on the ignition plug.
15 Citations
11 Claims
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1. A combustion pressure sensor arrangement in an internal combustion engine having a cylinder head, comprising:
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a plug seating formed in the cylinder head; an annular pressure sensor; an ignition plug screwed into the cylinder head in such a manner that said pressure sensor is clamped between said ignition plug and said plug seating; an ignition plug accommodation hole formed in the cylinder head for accommodating therein said ignition plug; and a guide sleeve joined at one end thereof to the outer periphery of said pressure sensor and fitted in said ignition plug accommodation hole, wherein said one end of said guide sleeve is fitted on the outer periphery of said pressure sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A combustion pressure sensor arrangement in an internal combustion engine having a cylinder head, comprising:
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a plug seating formed in the cylinder head; an annular pressure sensor; an ignition plug screwed into the cylinder head in such a manner that said pressure sensor is clamped between said ignition plug and said plug seating; an ignition plug accommodation hole formed in the cylinder head for accommodating therein said ignition plug; and a guide sleeve joined at one end thereof to the outer periphery of said pressure sensor and fitted in said ignition plug accommodation hole, wherein said pressure sensor has an outer peripheral portion formed by molding, said one end of said guide sleeve being embedded in said outer peripheral portion upon said molding.
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11. A combustion pressure sensor arrangement in an internal combustion engine having a cylinder head, comprising:
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a plug seating formed in the cylinder head; an annular pressure sensor; an ignition plug screwed into the cylinder head in such a manner that said pressure sensor is clamped between said ignition plug and said plug seating; an ignition plug accommodation hole formed in the cylinder head for accommodating therein said ignition plug; and a guide sleeve joined at one end thereof to the outer periphery of said pressure sensor and fitted in said ignition plug accommodation hole.
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Specification