Fuel injector

A technology of fuel injectors and injectors, applied in fuel injection devices, fuel injection devices with sensors, instruments, etc., can solve problems such as pressure sensor damage
CN101490406BInactive Publication Date: 2011-07-06DELPHI INT OPERATIONS LUXEMBOURG S A R L
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DELPHI INT OPERATIONS LUXEMBOURG S A R L
Publication Date
2011-07-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

A fuel injector comprises an injector body (22; 22f), a capnut (38; 38c; 38f), and a pressure sensor (72a-f) exposed to pressure changes in a combustion chamber (51) in use, wherein the pressure sensor (72a-f) is accommodated within the capnut. Optionally, the fuel injector further comprises a signal cable (98; 98f) external to the injector body (22) to connect with the pressure sensor (72a-f).
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Description

technical field

[0001] The present invention relates to fuel injectors for internal combustion engines. More specifically, the present invention relates to a fuel injector with an integrated pressure sensor for determining the pressure in the combustion chamber of the engine. Background technique

[0002] During operation of an internal combustion engine, the combustion of fuel takes place in one or more combustion chambers defined in part by associated cylinders disposed in the engine block. The capacity of each combustion chamber is determined by the position of the reciprocating piston, and gases are admitted to and discharged from the combustion chambers through inlet and discharge valves provided in the cylinder head. The gas pressure in the combustion chamber at a given time is determined by parameters such as piston position and valve opening or closing configuration.

[0003] In a diesel engine (compression ignition), fuel is admitted to the combustion chamber thro...

Claims

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