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Fuel injector with injection control valve cartridge

A technology of fuel injection and control valve, which is applied in the direction of fuel injection pump, fuel injection device, charging system, etc., and can solve complex problems.

Active Publication Date: 2014-09-24
CUMMINS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This injector control valve consists of multiple parts and is therefore complex

Method used

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  • Fuel injector with injection control valve cartridge
  • Fuel injector with injection control valve cartridge
  • Fuel injector with injection control valve cartridge

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Embodiment Construction

[0013] refer to figure 1 , a portion of the internal combustion engine is shown generally at 10 . The engine 10 includes an engine block 12 including an engine block (not shown) and a cylinder head 14 attached to the engine block. Engine 10 also includes a fuel system 16 including one or more fuel injectors 18 , a fuel pump, a fuel reservoir, valves, and other components (not shown) connected to fuel injectors 18 .

[0014] refer to Figure 1 to Figure 3 , fuel injector 18 includes an injector body 20 , a nozzle valve element 22 , a control volume 24 , a drain circuit 26 , and an injection control valve assembly 28 .

[0015] Applicants have recognized that injection control valve assemblies are complex devices comprising many components, such as actuators, stators, stator housings, armatures, control valve components, and load springs. These parts are usually assembled into the fuel injector assembly as separate components. The function of the injection control valve asse...

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Abstract

A fuel injector that includes an injector control valve assembly. The injector control valve assembly includes a contact spring positioned between a fuel injector upper body and the injector control valve assembly to isolate a stator housing from clamping forces that occur during fuel injector assembly and clamping in an internal combustion engine. The injector control valve assembly further includes a cartridge configuration that permits preassembly of the injector control valve assembly prior to mounting in the fuel injector.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of priority to US Provisional Patent Application Serial No. 61 / 554,117, filed November 1, 2011, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to control valves for fuel injectors. Background technique [0004] The fuel injector control valve is critical to the operation of the fuel injector as it opens or closes the fuel injector's nozzle valve element, thereby causing fuel injection. Such injector control valves consist of multiple components and are therefore relatively complex. Once the injector control valve is assembled into the fuel injector, it is held in place by the injector clamp load. Contents of the invention [0005] The present invention provides a fuel injector for injecting fuel under high pressure into a combustion chamber of an internal combustion engine, which includes an injector body ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M51/06F02M61/04F02M61/16
CPCF02M63/0225F02M51/061F02M63/0215F02M55/002F02M63/0056F02M61/161F02M47/027F02M59/366
Inventor 科里登·E·莫里斯
Owner CUMMINS INC