Glow plug
AssigneeBosch Corporation
InventorYasuo Toyoshima
Life of this patent
Estimating the term…
Abstract
Breakage in a short period is suppressed by improving a heat dissipation property. A glow plug (1) that includes: a heater (11), a tip of which is inserted in a combustion chamber of an internal combustion engine; a cylindrical body (12) that supports abase end of the heater; a housing (14) that supports the cylindrical body in a state where a heating section of the heater is projected; and a pressure sensor (15) that is provided in the housing and detects a pressure in a combustion chamber includes: a pressure introduction chamber (142) that is formed between the pressure sensor and the cylindrical body in the housing; and a communication path (21) that is formed in at least one of the housing and the cylindrical body and communicates between the combustion chamber and the pressure introduction chamber.
Claims13
A glow plug including:
- a heater, a tip of which is configured to be inserted in a combustion chamber of an internal combustion engine;
- a cylindrical body that supports a base end of the heater;
- a housing that supports the cylindrical body in a state where a heating section of the heater is projected;
- a pressure sensor that is provided in the housing and detects a pressure in the combustion chamber;
- a pressure introduction chamber that is formed between the pressure sensor and the cylindrical body in the housing;
- and
- a communication path that is formed in at least one of the housing and the cylindrical body and communicates between the combustion chamber and the pressure introduction chamber.
Dependencies are inferred from the claim text.