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Fuel supply device for internal combustion engine

一种燃料供给装置、内燃机的技术，应用在燃料喷射装置、特殊燃料喷射装置、液体燃料给料机等方向，能够解决安装空间增大、成本上升等问题

Inactive Publication Date: 2010-02-10
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since adding a pulsation damper to this device will lead to a corresponding increase in cost, and will result in an increase in the installation space due to upsizing, it is not preferred.

Method used

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  • Fuel supply device for internal combustion engine
  • Fuel supply device for internal combustion engine
  • Fuel supply device for internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Next, a preferred embodiment of the fuel supply device for an internal combustion engine of the present invention will be described. The fuel supply device of the present embodiment can be applied to an internal combustion engine having a V-shaped cylinder array.

[0018] figure 1 The schematic structure of the fuel supply apparatus of the internal combustion engine of this embodiment is shown in figure. like figure 1 As shown, a distribution pipe 12A is provided in the first bank 11A of the internal combustion engine 10 and a distribution pipe 12B is provided in the second bank 11B.

[0019] A communication channel 13 is connected to an end portion of the first distribution pipe 12A, and the communication channel 13 is connected to a fuel tank 15 via an electric fuel pump 14 . Further, a branch passage 17 extending branchingly from an intermediate portion thereof (specifically, a portion closer to the communication passage 13 side than the plurality of fuel injectio...

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PUM

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Abstract

A fuel supply device has two fuel injection systems having delivery pipes (12A, 12B) and fuel injection valves (16), and also has a pulsation damper (20). The fuel injection valves (16) are intermittently opened while fuel is sent under pressure to the two fuel injection systems through a common fuel pump, and this causes the fuel in the delivery pipes (12A, 12B) to be supplied from the fuel injection valves (16). Paths through which the fuel passes include a first path having the delivery pipe (12A) and a communication path (13) and also include a second path having a branch path (17) and thedelivery pipe (12B). A facing portion (P) to which an opening of a path (21) faces in the delivery pipe (12A) includes an opening, in the delivery pipe (12A), of the branch path (17). Pulsation of fuel pressure occurring in the two delivery pipes (12A, 12B) can be accurately suppressed by the single pulsation damper (20).

Description

technical field [0001] The present invention relates to a fuel supply device for an internal combustion engine, which is equipped with two fuel injection systems, and the fuel injection system has a distribution pipe for storing fuel and a fuel injection valve provided on the distribution pipe. Background technique [0002] A fuel supply device for an internal combustion engine includes a delivery pipe for storing fuel pumped by a fuel pump, and supplies fuel by opening and closing control of a fuel injection valve connected to the delivery pipe. In an internal combustion engine, since fuel injection from a fuel injection valve is intermittently performed, pulsation of fuel pressure inevitably occurs inside the distribution pipe as the fuel injection is switched to and from execution stop. The pulsation of the fuel pressure is the cause of various disadvantages such as generation of noise and reduction in fuel pumping efficiency of the fuel pump. [0003] Therefore, convent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M55/02F02M55/00F02M37/00
CPCF02M2200/315F02M37/0052F02M55/025F02M63/0295
Inventor 山成健司
Owner TOYOTA JIDOSHA KK