Glow plug with integrated pressure sensor
AssigneesSiemens VDO Automotive Corporation, Federal-Mogul Ignition Company
InventorsAlain Ramond, Sandro Goretti
Life of this patent
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Abstract
A glow plug includes: a tubular body (2) having at one of its ends a plug head as well as a fixing zone including elements (12, 13) for being fixed in a bore, an arm (4) mounted on the body (2) of the plug at the end opposite to the plug head, and a pressure sensor (8) sealingly insulated from the corresponding cylinder. The arm (4) is fixed to an elastically deformable tubular zone (17) designed to project inside the cylinder. The pressure sensor (8) is mounted between the arm (4) and a support component (18) fixed inside the tubular body (2).
Claims18
A glow plug for an internal combustion engine cylinder including:
- a tubular body having at one end a glow plug head and a fixing area having means for fixing into a bore,
- a finger mounted on the body of the glow plug at the end opposite the glow plug head, and
- a pressure sensor isolated in a sealed manner from the corresponding cylinder,
- wherein the finger is fixed to a tubular area by an intermediate support structure, said tubular area being elastically deformable and adapted to project into the cylinder and wherein the pressure sensor is mounted between the finger and a bearing part fixed to the interior of the tubular body.
Dependencies are inferred from the claim text.