Installation structure of engine component with combustion pressure sensor in engine
AssigneeDenso Corporation
InventorsHiroyuki Murai, Kouichi Hattori
Life of this patent
Estimating the term…
Abstract
In an installation structure of a glow plug with a combustion pressure sensor, a seat surface is provided in an installation hole formed in the engine so as to penetrate from outside into a combustion chamber of the engine. A contact surface is formed in the glow plug. The glow plug is partly inserted into the installation hole and is fixed via a ring shaped gasket to the engine so that the glow plug comes in pressurized contact with the engine in an axial direction of the installation hole. With the installation structure mentioned above, the elastic member is elastically more deformable in an axial direction of the installation hole than a portion of the glow plug on which the combustion pressure sensor is mounted.
Claims12
An installation structure of an engine component with a combustion pressure sensor in an engine having a combustion chamber, the combustion pressure sensor being mounted on the engine component for generating an output signal based on a force acting on the engine component responsive to combustion pressure of the combustion chamber, comprising:
- an installation hole formed in the engine so as to penetrate from outside into the combustion chamber;
- an elastic member positioned in the installation hole, the elastic member comprising at least one of a separate body from the engine component and the engine, an integral part of the engine component and an integral part of the engine,
- wherein the engine component is partly inserted into the installation hole and air tightly fixed via the elastic element to the engine so that the engine component comes in pressurized contact with the engine in an axial direction of the installation hole, and, further,
- wherein the elastic member is elastically more deformable in an axial direction of the installation hole than a portion of the engine component on which the combustion pressure sensor is mounted.
An assembly of an engine component having a combustion pressure sensor and an engine having a combustion chamber, comprising:
- an installation hole defined in the engine so as to extend from an outside surface of the engine to the combustion chamber;
- the engine component including an insertion part, said engine component being secured to said engine so that said insertion part is disposed in said installation hole;
- an elastic part disposed in the installation hole at an axial abutment between said insertion part and a wall defining the insertion hole,
- wherein the elastic part is elastically more deformable in an axial direction of the installation hole than a portion of the engine component on which the combustion pressure sensor is mounted and wherein the engine component is air tightly fixed to the engine at said axial abutment.
Dependencies are inferred from the claim text.