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Anti-interference carburetor mixed valve needle

A technology of carburetor and mixing adjustment, which is applied in the direction of machines/engines, etc., to achieve the effect of saving labor and shortening time

Inactive Publication Date: 2008-09-03
胡斯华纳户外产品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This assembly bottleneck is a major cost factor in the final product in terms of the labor time required to form the final product

Method used

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  • Anti-interference carburetor mixed valve needle
  • Anti-interference carburetor mixed valve needle
  • Anti-interference carburetor mixed valve needle

Examples

Experimental program
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Embodiment Construction

[0045] Referring now to the accompanying drawings, and in particular to figure 1 - 5D is a diagrammatic illustration of an engine carburetor 20 having a carburetor body 22 . Typically, carburetor 20 is used on two-stroke small engines. Depending on the design of the two-stroke engine and the use of the end product, the carburetor can be equipped with two mixing adjustment screws or valve needles or with a single mixing adjustment screw or valve needle. For the scheme equipped with two mixed regulating valve needles, both low-speed (no-load) fuel rich regulation and high-speed (large throttle opening) fuel rich regulation can be performed. When a single mixing valve needle scheme is used, only high-speed mixing adjustment can be performed. This is acceptable where performance is not critical at low speeds and where a fixed flow rate is tolerated.

[0046] In the depicted embodiment, the carburetor 20 has a low speed adjustment screw 24 and a high speed adjustment screw 26 . ...

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PUM

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Abstract

The present invention relates to an anti-interference mixing regulation screw device for carburetor. Said device includes carburetor self-body, said self-body has at least one air / fuel regulation screw whose screw thread can be turned into said self-body, said described regulation screw has threaded bolt portion and screw head portion, and the described screw head portion is formed from a smooth top face and a wave-like side face, said wave-like side face can be meshed and matched with a regulation tool.

Description

[0001] technical field of invention [0002] The present invention relates to carburetors, and more particularly to a tamper-resistant mixing adjustment screw arrangement for carburetors. background of the invention [0003] Environmental regulations are about to begin setting limits on combustion products from small power tools such as gasoline-powered lawnmowers, edgers, chainsaws and trimmers. These power tools typically employ a diaphragm carburetor to control the air / fuel mixture delivered to the two-stroke gasoline engine. Fuel is delivered to the intake passage of the engine by the fuel pump. Regulate the fuel pressure to a fixed pressure through the fuel pressure regulator. The fuel pressure regulator is equipped with a fuel chamber in which the fuel delivered by the fuel pump is stored. A membrane forms a side wall of the fuel chamber and a control valve is interconnected with the membrane, the movement of the membrane opening and closing the inlet to the fuel cham...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M7/12
Inventor 保罗·A·沃拂尔麦克·华莱士罗德尼·W·泰恩斯托尼·考克然杰弗里·S·福兰克
Owner 胡斯华纳户外产品有限公司