FUEL INJECTION VALVE EQUIPPED WITH IN-CYLINDER PRESSURE SENSOR

摘要

A fuel injection valve equipped with an in-cylinder pressure sensor is provided, in which the fuel injection valve is fitted into an injection valve mounting hole provided in an engine, the in-cylinder pressure sensor is attached to a valve housing part of the fuel injection valve, the in-cylinder pressure sensor having a front end facing the combustion chamber and detecting a pressure of the combustion chamber, and a signal transmission device is connected to the in-cylinder pressure sensor, the signal transmission device transmitting an output signal thereof to an outside. The signal transmission device is disposed on the valve housing part and covered together with a part of the valve housing part by an insulating layer. In such arrangement, the signal transmission device is protected by the insulating layer, and a contact between the signal transmission device and an inner face of the injection valve mounting hole is prevented.

主权项

1. A fuel injection valve equipped with an in-cylinder pressure sensor, in which
the fuel injection valve is fitted into an injection valve mounting hole provided in an engine, the fuel injection valve directly injecting fuel into a combustion chamber of the engine, the in-cylinder pressure sensor is attached to a valve housing part of the fuel injection valve, the in-cylinder pressure sensor having a front end facing the combustion chamber and detecting a pressure of the combustion chamber, and a signal transmission device is connected to the in-cylinder pressure sensor, the signal transmission device transmitting an output signal thereof to an outside, wherein the signal transmission device is disposed on an outer face of the valve housing part and covered together with a part of the valve housing part by an insulating layer made of a synthetic resin.