Fuel injection valve with cylinder internal pressure sensor

Patent metadata

Field	Value
Publication number	US-2016208755-A1
Application number	US-201614997703-A
Country	US
Kind code	A1
Filing date	Jan 18, 2016
Priority date	Jan 20, 2015
Publication date	Jul 21, 2016
Grant date	—

Abstract

A signal transmitting unit that makes up a fuel injection valve includes a first signal transmitting member a distal end of which is connected to a sensor, and a second signal transmitting member a proximal end of which is connected to an amplifying member. A first connector of the first signal transmitting member is formed in a convex shape, and is inserted into a concave part of a second connector in the second signal transmitting member and connected by solder. At this time, a clearance in a radial direction is included between the first connector and the concave part. Further, a third connector is formed on a proximal end of the second signal transmitting member, and is inserted into a connecting hole of the amplifying member and connected by solder. Further, a clearance in a radial direction is included between the third connector and the connecting hole.

First claim

What is claimed is:

1 . A fuel injection valve equipped with a cylinder internal pressure sensor, the sensor being provided at an end of the fuel injection valve configured to directly inject fuel into a combustion chamber of an internal combustion engine, the sensor being configured to detect a cylinder internal pressure in an interior of the combustion chamber, the fuel injection valve comprising:
a signal transmitting member configured to transmit, as a detection signal, the cylinder internal pressure detected by the sensor; wherein the signal transmitting member comprises: a first transmitting unit connected to the sensor; a second transmitting unit configured to externally output the detection signal; and a third transmitting unit configured to interconnect the first transmitting unit and the second transmitting unit; wherein clearances are provided, respectively, at a connection site between the first transmitting unit and the third transmitting unit, and at a connection site between the second transmitting unit and the third transmitting unit, and an intermediate portion of the third transmitting unit between both ends of the third transmitting unit is fixed with respect to a housing.

2 . The fuel injection valve equipped with the cylinder internal pressure sensor according to claim 1 , wherein the clearances are disposed in a direction perpendicular to a direction of extension of the third transmitting unit.

Assignees

• Keihin Corp

Inventors

• Sato Gaku

Classifications

• F02M57/005 Primary

  the devices being sensors · CPC title

• G01M15/08

  by monitoring pressure in cylinders · CPC title

• F02M51/06

  Injectors peculiar thereto {with means directly operating the valve needle} · CPC title

• F02M51/005

  Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus · CPC title

• F02M2200/247

  Pressure sensors · CPC title