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Internal combustion engine air intake apparatus with adjustable structure

A technology for internal combustion engines and equipment, applied to mechanical equipment, fuel air intakes, engine control, etc., can solve problems such as complex shapes, substrate fractures, and difficulties in the process of making pressure guiding channels

Inactive Publication Date: 2007-09-05
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the pressure sensor or the substrate on which the pressure sensor is mounted may break
In addition to this, due to the cracking of the solder, there will be a failure of circuit breakage in the pressure sensor and the substrate on which the pressure sensor is mounted.
[0004] In addition, if the pressure guide channel adopts a labyrinth structure, its shape will become complicated
Thus, the process of making pressure guide channels in the intake pipe wall becomes difficult

Method used

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  • Internal combustion engine air intake apparatus with adjustable structure
  • Internal combustion engine air intake apparatus with adjustable structure
  • Internal combustion engine air intake apparatus with adjustable structure

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0025] As shown in Figures 1 and 2, an air intake device is manufactured with an air intake throttling device (throttle device) 1, an air filter, and an internal combustion engine 300 (specifically, the intake air of the internal combustion engine manifold). The air intake device can variably adjust the flow rate of the intake air - that is, the flow rate of the intake air flow - according to the operating conditions of the internal combustion engine. As will be described below, the intake device can also be designed with only the throttle device 1 capable of variable control of the intake air flow. When the throttle device 1 is installed on the vehicle, it is airtightly connected with an intake duct (not shown in the figure), and in the direction of the intake air flow of the throttle device 1, the upstream of the intake duct There is an air cleaner 200 on one side (intake upstream side). In addition, on the downstream side of the intake airflow, the throttle device 1 commu...

no. 4 example

[0071] In the fourth embodiment, the first pressure guide passage 14 described in the first embodiment, which has a vertically elongated cross-section, is made into a substantially circular cross-section as shown in FIGS. 9A and 9B . The first pressure guide channel 114 .

[0072] Preferably, the first substantially circular pressure guiding channel 114 is dimensioned such that the elongated hole described in the first embodiment is substantially internally in contact with the substantially circular shape. Thus, water or liquid can accumulate to a predetermined liquid level, so that the first pressure guide passage 14 is less prone to clogging. Compared with the elongated hole shape of the first pressure guiding channel 14, the substantially circular first pressure guiding channel 114 can accommodate a larger amount of liquid, so that the channel is less likely to be blocked.

[0073] In the above several embodiments, the throttle device 1 with the pressure sensor 60 and the ...

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PUM

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Abstract

This device is provided with the pressure sensor detecting pressure of intake air flowing inside a intake air passage 10a formed in an intake pipe (valve housing) 10, the circuit board on which the pressure sensor is mounted, and a pressure introduction passage 14 opening on the intake air passage and capable of introducing intake air to the pressure sensor. The pressure sensor 60 includes a sensing port part 0b detecting pressure. A seal member 80 including a pressure communication passage part 81 is arranged between the pressure sensor 60 and the pressure introduction passage 14. One end side 80a of the pressure communication passage part 81 of the seal member 80 is sealed at an outer circumference of the sensing port part 60b. Another end part 80b is put between a wall part 13 of the intake pipe partitioning the pressure introduction passage 14 opposite to the pressure communication passage part 81 and a holder member (casing) 70 and is sealed by surfaces.

Description

technical field [0001] The invention relates to an air intake device for an internal combustion engine. Background technique [0002] According to the prior art disclosed in the patent document JP-A-2002-235616, a pressure sensor is directly installed on the wall of the intake pipe of an intake device for an internal combustion engine for detecting the intake pressure. A resinous fixing part is integrally formed on the wall of the intake pipe, which is used to support the pressure sensor. The pressure sensor is directly connected to a pressure guide channel, which communicates with the intake port for guiding the intake air to the pressure sensor. The pressure guide channel is a labyrinth structure, which prevents dust from flowing into the pressure sensor. [0003] In this known construction, the pressure sensor is connected directly to the pressure-conducting channel. However, the relative positioning of the pressure sensor with respect to components such as the substra...

Claims

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Application Information

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IPC IPC(8): F02M35/10F02D35/00G01L23/24F02D9/10
Inventor 佐野亮中野勇次永田孝一
Owner DENSO CORP