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Internal-combustion-engine supercharger

A technology of a supercharging device and an internal combustion engine, which is applied to the field of supercharging devices of an internal combustion engine, can solve problems such as the adverse effect of intake air backflow, the adverse effect of air flow meter detection, and the like, and achieve the effect of improving the cross-sectional area of ​​the flow path.

Active Publication Date: 2016-02-10
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there will be such a problem that when the liquid freezes in the bypass passage, it will adversely affect the return flow of the intake air
In addition, there will be such a problem that if the accumulated liquid is blown back when the control valve is opened, it will adversely affect the detection of the air flow meter and the like.

Method used

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  • Internal-combustion-engine supercharger
  • Internal-combustion-engine supercharger
  • Internal-combustion-engine supercharger

Examples

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Embodiment Construction

[0025] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0026] figure 1 It is a schematic configuration diagram showing the internal combustion engine 1 of the present embodiment. figure 2 It is an external view showing the internal combustion engine 1 of the present embodiment, wherein (a) is an external side view, and (b) is an external front view.

[0027] The internal combustion engine 1 is mounted on a vehicle and has four cylinders 2 . The internal combustion engine 1 is a diesel engine that directly injects fuel into a combustion chamber of each cylinder 2 . A fuel injection valve (not shown) is provided in each cylinder 2 of the internal combustion engine 1 .

[0028] The internal combustion engine 1 has an electronic control unit (hereinafter referred to as ECU), not shown, which is electrically connected to the fuel injection valve. The ECU controls the opening time and closing time of the fuel injec...

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Abstract

An internal-combustion-engine supercharger includes a centrifugal compressor, a pre-compression flow path, a post-compression flow path, a bypass passage, and a control valve. The centrifugal compressor is disposed in an intake passage of an internal combustion engine and has an impeller to compress and discharge intake air using a radial centrifugal force generated by rotating the impeller. The intake air in the post-compression flow path is to be recirculated to the pre-compression flow path via the bypass passage. A connecting portion between the bypass passage and the pre-compression flow path is disposed at a position other than an extreme-bottom surface portion located at a lowest portion in a flow path section of the pre-compression flow path in a state where the internal-combustion-engine supercharger is installed in a vehicle. The control valve is disposed in the bypass passage to control a recirculation flow rate of the intake air.

Description

technical field [0001] The invention relates to a supercharging device for an internal combustion engine. More specifically, it relates to a supercharging device for an internal combustion engine having a bypass passage for recirculating intake air. Background technique [0002] Conventionally, there is a technique disclosed in Patent Document 1 as a supercharging device for an internal combustion engine of a vehicle or the like. In the technique disclosed in Patent Document 1, a bypass passage is provided for recirculating the pressurized intake air by the centrifugal force in the radial direction obtained by the rotation of the impeller. In addition, an adjustment valve for adjusting the return flow rate of the intake air is provided in the middle of the bypass passage. [0003] In addition, the supercharging device has been downsized and highly responsive to eliminate supercharging lag. In this current situation, even if the impeller is driven to rotate, it only idles ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B33/40F02B39/00F02B37/16F04D29/42
CPCF02M25/06F02B37/16F05D2220/40F04D25/024F04D27/0215F02M35/10157F02B2037/125Y02T10/12F02B37/12
Inventor 桥本明典新开孝裕横山宏树
Owner HONDA MOTOR CO LTD
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