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Fuel injection device

A fuel injection device and fuel injection technology, which are applied in the directions of fuel injection device, special fuel injection device, fuel injection control, etc., can solve the problems of deterioration of exhaust gas, decrease of output power, decrease of fuel flow rate, etc.

Inactive Publication Date: 2009-09-16
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, fuel flow is reduced, exhaust is degraded, and power output is reduced

Method used

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  • Fuel injection device
  • Fuel injection device
  • Fuel injection device

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Embodiment Construction

[0031] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0032] figure 1 is a schematic diagram showing a fuel injection device 1 according to an embodiment of the present invention. A fuel injection device 1 includes a fuel injection valve 2 whose distal end is at figure 1 Visible in the enlarged cross-sectional view shown in . The fuel injection valve 2 is attached to each cylinder of an engine, not shown, and injects fuel into a combustion chamber of the engine. The fuel pressurized by the fuel injection pump 3 is supplied to the fuel injection valve 2 via the common rail 4 .

[0033] The fuel injection valve 2 is provided with injection holes located at the distal end 8a of the nozzle body 8 and spaced apart from each other in the fuel flow direction. That is, the fuel injection valve 2 has a first injection hole 9 on the upstream side and a second injection hole 10 on the downstream side. The diameter of t...

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PUM

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Abstract

A fuel injection device (1) includes a fuel injection valve (2) that injects fuel, and is provided with a first nozzle hole (9) and the second nozzle hole (10), which are controlled independently of each other to inject the fuel. The fuel injection device further includes a controller (5) that performs a deposit removal fuel injection in accordance with an amount of deposits accumulated in the first nozzle hole and / or the second nozzle hole. The deposit removal fuel injection injects fuel to remove the deposits.

Description

technical field [0001] The invention relates to a fuel injection device for an internal combustion engine. Background technique [0002] In a fuel injection valve having a first injection hole and a second injection hole that directly injects fuel into a cylinder, generally, one of the injection holes is selected to inject fuel based on an engine operating state or a fuel injection amount. Therefore, one of the first injection hole and the second injection hole is sometimes not used. When fuel is injected only through the first injection hole and not through the second injection hole, deposits may accumulate in the second injection hole. In order to prevent the second injection hole from being blocked by deposits, Japanese Patent Application Laid-Open No. 2002-310042 (JP-A-2002-310042) describes the following: When such fuel injection (through the first injection hole only) continues At a predetermined time, fuel injection through the second injection hole is forcibly perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M45/08F02M45/02F02D41/40
CPCF02M65/008F02M47/027F02M45/086F02M2200/06F02M2200/46F02D41/402F02D41/221F02M45/02
Inventor 太长根嘉纪奥村文浩
Owner TOYOTA JIDOSHA KK