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High flow compressed natural gas injector for automotive applications

一种喷射器、压缩弹簧的技术，应用在机器/发动机、燃料喷射装置、机械设备等方向，能够解决没有足够支承表面面积、没有冲击面面积、不能具有长期干燥气体耐用性等问题

Active Publication Date: 2014-06-11
VITESCO TECH USA LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, conventional CNG injectors cannot have long-term dry gas durability due to tribological issues with chrome plating and stainless alloys, soft substrates for magnetic components present for coating, insufficient bearing surface area to withstand lateral forces, and does not have sufficient impact surface area during the injector open cycle

Method used

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  • High flow compressed natural gas injector for automotive applications
  • High flow compressed natural gas injector for automotive applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] refer to figure 1 , shows a solenoid actuated injector, generally indicated at 10 , having an inlet 11 and an outlet 12 according to one embodiment. Injector 10 is constructed and arranged to inject gaseous fuel (eg, CNG) into an internal combustion engine. Injector 10 includes valve stack subassembly 13 and magnetic stack subassembly 14 . Valve bank subassembly 13 performs fluid handling functions such as defining a fuel flow path and inhibiting fuel flow through injector 10 . Magnetic subassembly 14 performs power functions, eg, converting an electrical signal into a magnetic drive force to allow fuel flow through injector 10 .

[0010] refer to figure 2 , the valve block subassembly 13 includes a valve body 16 in the form of a hollow tube having an inner portion 18 . The valve body 16 is preferably drawn and then machined. The armature tube 20 is hollow and is disposed within the inner portion 18 . The armature tube 20 is preferably an insert molded thermoplas...

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PUM

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Abstract

An injector (10) includes a valve body (16), an armature tube (20) in the valve body, a seal disk (24) carried by the armature tube, a spring (30) associated with the seal disk, a seat (34) defining an outlet. The seat includes a seat surface (38) engaged with the seal disk that is biased by the spring, when the injector is in a closed position, preventing fuel from exiting the outlet. A movable armature (42) is coupled to an end of the armature tube. An adjusting tube (48) engages an end of the spring. An inlet tube (50) defining an inlet has an end surface that is spaced from the periphery of the armature in the closed position. An electromagnetic coil (58) is disposed about a portion of the inlet tube. A flux member (60) is associated with the coil. A housing (62) covers at least a portion of coil.

Description

technical field [0001] The present invention relates to fuel systems for internal combustion engines of vehicles, and more particularly to high flow compressed natural gas (CNG) injectors. Background technique [0002] Conventional CNG injectors for automotive applications will not provide sufficient flow for customer demand in the near future. To achieve the required flow, such injectors require high lift. However, the higher lift for higher flows also introduces durability issues to the injector. Conventional CNG injectors provide 1 / 2-1 / 3 of the flow required. In addition, conventional CNG injectors cannot have long-term dry gas durability due to tribological issues with chrome plating and stainless alloys, soft substrates for magnetic components present for coating, insufficient bearing surface area to withstand lateral forces, And there is not enough impact surface area during the injector opening cycle. [0003] Thus, there is a need to provide durable high flow gas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M51/06F02M21/02
CPCF02M21/0266F02M51/061F02M21/0296F02M21/0254F02M51/0625F02M51/0667Y02T10/32Y02T10/30
Inventor P.齐梅克
Owner VITESCO TECH USA LLC
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