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A fluid injector having a reed valve

A technology for fluid injectors and reed valves, which is applied in fuel injection pumps, low-pressure fuel injection, low-pressure fuel injection, etc., and can solve problems such as the limitation of opening characteristics of reed valve blades

Active Publication Date: 2012-09-19
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A known disadvantage of reed valves is that the choice of opening characteristics of the reed valve blades is limited by the small size of the fuel injector
Therefore the reed valve leaf may not open as quickly and / or as wide as desired

Method used

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  • A fluid injector having a reed valve
  • A fluid injector having a reed valve
  • A fluid injector having a reed valve

Examples

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Embodiment Construction

[0041] The present invention relates to a fluid injector having a reed valve. The fluid injector is for use in an internal combustion engine including a cylinder within which a piston reciprocates, defining a combustion chamber therebetween. The engine is preferably a single engine, such as a single cylinder engine of a lawn mower or other garden equipment.

[0042] The engine has a fuel injection system comprising a fluid injector according to the invention, the fuel injection system being arranged for delivering gasoline fuel into an inlet passage upstream of the inlet valve. A throttle valve is located in the inlet passage for regulating the flow of charge air into the combustion chamber.

[0043] figure 1 Fluid injector 19 is shown with piston 30 located in fluid pumping chamber 36 . A fluid inlet 42 is provided for fluid to enter the fluid injector 19 and flow through the piston 30 into the fuel passage. A one-way inlet valve 35 controls the flow of fluid from the inl...

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PUM

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Abstract

With reference to Figure 1, the present invention provides a fuel injector (19) comprising a reed valve (35). The reed valve has at least one orifice and at least one reed valve blade, the or each reed valve blade having a valve head attached to at least one resilient spring arm. The or each valve head opens and closes a respective orifice in the valve seat. A support surrounds the reed valve blade (s). Each spring arm extending inwardly from the support. Each spring arm is curved.

Description

technical field [0001] The invention relates to a fluid injector with a reed valve suitable for injecting gasoline fuel into charge air in an internal combustion engine. Background technique [0002] Most vehicle internal combustion engines typically employ a fuel injection system to deliver fuel to the engine's combustion chambers. Fuel injection systems have replaced earlier carburetor technology because fuel injection systems provide more control over fuel delivery and enable the engine to both meet emissions legal standards and improve the overall efficiency of the engine. [0003] Some currently used fuel injectors include a positive displacement pump and one or more check valves. To allow fuel to be dispensed by the fuel injector and prevent fuel from flowing back into the fuel chamber, a check valve may be provided at the fuel outlet of the fuel injector. The use of reed valves as check valves is known. A reed valve can be a thin flexible strip secured at one end. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M69/04F02M51/06F02M57/02F02M61/04F02M59/46F02M63/00
CPCF02M2200/26F02M51/06F02M69/04F02M57/021F02M61/047F02M59/462
Inventor 保罗·巴塞洛缪·雷文希尔理查德·马修·霍拉汉杰弗里·艾伦史蒂文·巴勒克拉夫
Owner ROBERT BOSCH GMBH