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Fuel supply device for internal combustion engine

A fuel supply device and a fuel supply technology, which are applied to fuel injection devices, internal combustion piston engines, combustion engines, etc., can solve the problems of reduced nozzle opening area and reduced fuel flow rate, etc.

Inactive Publication Date: 2013-03-06
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, when deposits are generated around the nozzle holes of the injector, there is a possibility that the opening area of ​​the nozzle holes is reduced due to the deposits, so that reduced fuel flow

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
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Embodiment Construction

[0030] Below, refer to Figure 1 to Figure 11 , an embodiment in which the present invention is embodied as a fuel supply device for an automobile engine will be described.

[0031] exist figure 1 The intake passage 2 of the illustrated engine 1 is provided with a throttle valve 4 that opens and closes to adjust the amount of air sucked into the combustion chamber 3 (amount of intake air). The opening degree (throttle opening degree) of the throttle valve 4 is adjusted according to the depression amount (accelerator pedal operation amount) of the accelerator pedal 5 which is depressed by the driver of the vehicle. Furthermore, the engine 1 includes an injector 6 for injecting fuel from the intake passage 2 toward the intake port 2 a of the combustion chamber 3 and a fuel supply device 7 for supplying fuel to the injector 6 . Fuel adjusted to supply pressure.

[0032] The fuel supply device 7 is provided with a supply pump 9 , a fuel pipe 31 and a pressure regulator 32 , wh...

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PUM

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Abstract

Temperature decrease control for decreasing the temperature of an injector (6) is performed by first to third fuel supply control routines executed via an electronic control device (16). When the temperature of the injector (6) is decreased by the execution of the temperature decrease control, the transmission of heat to the area around an injection hole of the injector (6) is reduced. With the reduction in the transmission of heat to the area around the injection hole of the injector (6), the possibility that the area around the injection hole of the injector (6) is placed in a high-temperature environment is reduced, thereby suppressing the generation of deposits in the area around the injection hole of the injector (6).

Description

technical field [0001] The invention relates to a fuel supply device for an internal combustion engine. Background technique [0002] An internal combustion engine mounted on a vehicle such as an automobile includes an injector for injecting fuel into an intake port, and a fuel supply device for supplying fuel adjusted to a supply pressure to the injector. [0003] In the injector described above, fuel adheres around the injection hole, or exhaust gas that flows back from the combustion chamber into the intake port adheres. When the surroundings of the injection holes to which the fuel or exhaust gas adheres in this manner are placed in a high-temperature environment, the fuel or exhaust gases adhering to the injection holes are scorched or the like to generate deposits. Moreover, when deposits are generated around the nozzle holes of the injector, there is a possibility that the opening area of ​​the nozzle holes is reduced due to the deposits, so that The flow of fuel is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M53/04
CPCF02M53/04F02D41/042Y02T10/18F02D13/0261F02M69/04F02M69/044F02D13/0238F02D2041/224F02D41/065Y02T10/12
Inventor 西村太一金子理人
Owner TOYOTA JIDOSHA KK
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