Fast fit connecting device for connecting backflow connector to internal combustion engine fuel injector

A technology of injectors and connectors, which is applied to fuel injection devices, special fuel injection devices, connecting components, etc., can solve problems such as missing valve needles

Inactive Publication Date: 2003-03-12
戴斯尔意大利技术公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Fast fit connecting device for connecting backflow connector to internal combustion engine fuel injector
  • Fast fit connecting device for connecting backflow connector to internal combustion engine fuel injector

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Embodiment Construction

[0012] Reference numeral 5 among Fig. 1 represents the fuel injector of internal combustion engine such as diesel engine; Injector 5 comprises a body 6 that is connected with nozzle 7, and this nozzle 7 is controlled by a standard electromagnetic metering valve; The pipe 8 and the oil nozzle 9 are connected to a standard oil supply pump.

[0013] The injector 5 comprises a cover 11 integral with the body 6, and the cover 11 comprises a return duct 12 for returning the fuel of the metering valve and any fuel leaking between the joint surfaces of the components of the injector 5; the return duct 12 Comprising a generally cylindrical end piece 13; the cover 11 covers a plastic molding 14; the plastic molding 14 includes a delivery tube 15 for supporting the electromagnet of the solenoid metering valve.

[0014] The end piece 13 is connected to a return connection, indicated at 16 . More specifically, the connector 16 consists of a connecting piece 17 inserted into the end piece ...

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PUM

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Abstract

The injector has a recirculating conduit with an end element having two recesses, each incorporating an opening; the backflow connector has a connecting element having a groove, and is fitted to the end element so that the groove corresponds with the openings; a C-shaped snap-on fastener has two arms with two portions for simultaneously engaging or releasing the recesses and, via the openings, also the groove; and the backflow connector is connected and disconnected by translating the fastener, which, however, remains secured to the injector at all times.

Description

technical field [0001] The invention relates to a quick-fix connection device for connecting a return connector to a fuel injector of an internal combustion engine. Background technique [0002] Fuel injectors typically have a return line integral with the injector and include a usually cylindrical end piece. As fuel flows through the metering valve, any fuel that leaks between the various surfaces (for example, the valve needle and nozzle surfaces) flows back into the fuel tank along a return line that includes a return connector that connects to the end of the return line. Components can be linked flexibly. [0003] There are several known connecting devices of the type described. In a known device, the return connector is a cap type, which is connected and fixed to the end piece of the return pipe; the end piece includes an annular groove; the connector includes an eccentric transverse hole; the connector is locked to the end piece by engaging the needle insertion hole...

Claims

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Application Information

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IPC IPC(8): F02B77/00F02M55/00F02M61/16F16B21/18F16L37/14
CPCF02M2200/803F02M61/168F02M2200/8023F02M55/002F16L37/144F02M55/004F02M61/18
Inventor 马里奥·里科
Owner 戴斯尔意大利技术公司
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