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Fuel pressure adjusting device

A pressure regulating device, fuel injection device technology, applied in the direction of fuel injection device, liquid fuel feeder, charging system, etc., can solve the problems of cost increase, easy bending, restriction, etc. Degree of freedom, to achieve the effect of large-scale

Active Publication Date: 2011-03-30
HONDA MOTOR CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, even in the above-mentioned conventional example, since the damping chamber protruding in the radial direction of the fuel piping is provided, the layout of the fuel piping, etc. The problem of increasing the cost due to the increase of parts and man-hours for installing the damper chamber on the fuel piping
[0006] In addition, in order to make it easy to bend and reduce the cost, it is desirable to use a small-diameter resin pipe for the fuel piping. In the case of the device, there is a limit to reducing the diameter
[0007] In addition, as a fuel pressure regulating device that enables the fuel pipe itself to have a pressure regulating function, there is a fuel pressure regulating device that uses a rubber hose and utilizes the damping performance of its elastic deformation to suppress fuel pressure fluctuations. Large and costly

Method used

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Embodiment Construction

[0044] based on Figure 1 to Figure 6 The first embodiment of the present invention and its modifications will be described.

[0045] Such as figure 1 with figure 2 As shown, a front fork 11 is rotatably provided at the front end of a vehicle frame 10 of a small motorcycle, and a front wheel 1 is rotatably supported on a lower portion of the front fork 11. The bracket 12 supports the front part of the power unit 2 so as to be able to swing up and down.

[0046] The power unit 2 is composed of a single-cylinder engine (internal combustion engine) 3 and a continuously variable transmission 5, wherein the single-cylinder engine 3 is arranged at the front of the power unit 2 so that the axis of the cylinders is inclined forward and upward, and the continuously variable transmission 5 is used for rearward The wheel 4 transmits the output of the engine 3 after the continuously variable transmission. The rear wheel 4 is supported on the rear portion of the power unit 2 . A rear...

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Abstract

The present invention provides a fuel pressure adjusting device, capable of implementing small-diameter resinification of fuel piping without a design problem of laying the fuel piping, and reducing cost. The fuel pressure adjusting device (40) is arranged on a fuel piping (30) for supplying fuel compressed by a fuel pump (29) to a fuel injection device (26), wherein at least a part of the fuel piping (30) is telescopic in a fuel passage direction or in a direction that is vertical to the fuel passage direction, so as to increase or decrease a volume of the fuel passage in the telescopic part to restrain the pressure of the fuel piping (30) from fluctuation.

Description

technical field [0001] The present invention relates to a fuel pressure regulating device which reduces pressure fluctuation of fuel. Background technique [0002] When fuel is delivered from the fuel pump unit of the fuel tank to the injector through the fuel pipe, the pressure of the fuel in the fuel pipe (hereinafter referred to as "fuel pressure") fluctuates due to the pulsation generated in the fuel pump unit. Therefore, there is a It is necessary to prevent the injection quantity of the injector from dropping at low pressure caused by pulsation. For this reason, a mechanical vibration damper (パルせ一シヨンヨンパ) needs to be additionally attached. However, in order to reduce costs, such a fuel pressure regulating device has been proposed: it is configured to have a fuel passage through which pressurized fuel passes through the interior, and has a reduction A pressure regulating mechanism for fluctuating fuel pressure of fuel passing through the fuel passage. [0003] For exam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M37/00F02M55/02
Inventor 永井康晃池田健一郎
Owner HONDA MOTOR CO LTD
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