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Methods and systems for fuel injector

A technology of fuel injectors and nozzles, applied in fuel injection devices, charging systems, combustion engines, etc., can solve the problems of increasing vehicle manufacturing costs and packaging restrictions

Pending Publication Date: 2019-09-24
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the particulate filter may be located in the exhaust passage, adding to the vehicle's manufacturing cost and packaging constraints

Method used

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  • Methods and systems for fuel injector
  • Methods and systems for fuel injector
  • Methods and systems for fuel injector

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example 300

[0061] now refer to Figure 3A , which shows a first embodiment 300 of a nozzle 210 that includes an air entrainment feature 310 . In the first embodiment, nozzle 210 may be partially hollow such that air entrainment feature 310 may direct combustor gases from combustor 30 to outlet passage 224 when fuel injector 66 is out of the first position. More specifically, end portion 214 may be entirely solid except for air entrainment features 310, which may be disposed through end portion 214, extending from its base to an angled surface to facilitate combustion chamber gases in the fuel. The injection mixes with the fuel injection before reaching the combustion chamber 30 . As noted above, outlet channel 224 may comprise a semi-annular venturi shape. A restricted portion of the venturi throat and / or outlet passage 224 may facilitate flow of combustor gases through the air entrainment feature 310 , as indicated by the white headed arrow. As depicted, combustor gases enter air ent...

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PUM

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Abstract

The present invention provides Methods and systems for a fuel injector. In one example, a system may include a fuel injector having a half-annular venturi shaped outlet passage arranged between an outlet surface of the fuel injector and a half-cone shaped end portion of a nozzle. The nozzle may further comprise one or more air entraining features working in tandem with the half-annular venturi outlet passage to promote air-fuel mixing.

Description

technical field [0001] The present description generally relates to a fuel injector including an air entrainment feature. Background technique [0002] In diesel and gasoline engines, air is drawn into the combustion chamber by opening one or more intake valves during the intake stroke. Then, during a subsequent compression stroke, the intake valve may close, and the reciprocating piston of the combustion chamber compresses the gases that entered during the intake stroke, raising the temperature of the gases in the combustion chamber. Fuel is then injected into the hot compressed gas mixture in the combustion chamber, whereupon the fuel is combusted by one or more of compression ignition and spark ignition, or a combination thereof. The combusted air-fuel mixture pushes against the piston, driving the piston's motion, which is then converted into rotational energy of the crankshaft. [0003] Diesel and / or gasoline fuel may not mix evenly with the air in the combustion cham...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M61/14F02M61/18
CPCF02M61/14F02M61/1806F02M61/1893F02B23/105F02M61/1833F02M61/184F02M61/20F02M63/0078Y02T10/12F02B3/02F02B17/005
Inventor 张晓刚
Owner FORD GLOBAL TECH LLC