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Rotary angle detecting device

A technology of rotation angle and detection device, which is applied in the direction of transmission of sensing components by means of electric/magnetic devices, can solve the problems of increasing the size of the rotation angle detection device and destroying the installation performance.

Inactive Publication Date: 2011-02-09
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this need is satisfied, the overall size of the rotation angle detection device is disadvantageously increased, and the mountability of the rotation angle detection device into a motor vehicle is disadvantageously impaired.

Method used

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Examples

Experimental program
Comparison scheme
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no. 1 example

[0060] Figures 1A to 2C A first embodiment of the invention is shown. More specifically, Figures 1A to 1C is a diagram showing the entire structure of the rotation angle detection device. Figures 2A to 2C is a diagram showing a modification of the main structure of the rotation angle detection device.

[0061] The internal combustion engine control system (engine control system) of this embodiment includes an electronically controlled fuel injection system, an intake assembly (intake air quantity control device) and an engine control unit (ECU). The electronically controlled fuel injection system injects fuel into a combustion chamber of an internal combustion engine (for example, a single-cylinder four-stroke gasoline engine of a motorcycle: hereinafter referred to as an engine) of a motor vehicle such as a motorcycle. The intake assembly is installed into the intake system of the engine. The ECU controls the electronically controlled fuel injection system and air inta...

no. 2 example

[0126] Figure 3-5 A second embodiment of the invention is shown. More specifically, image 3 is a diagram showing an intake assembly having a rotation angle detecting device of a second embodiment. Figure 4 is a diagram showing the intake air temperature sensor of the second embodiment. Figure 5 is a diagram showing the intake air pressure sensor of the second embodiment.

[0127] The intake assembly of this embodiment includes a rotation angle detecting device (see the first embodiment), an intake air temperature sensor 6 and an intake air pressure sensor 7 . The rotation angle detection device includes a magnet 2, a throttle opening sensor 3 and an open yoke. The intake air temperature sensor 6 measures the temperature of intake air supplied into the combustion chamber of the engine (intake intake temperature). Then, the intake air temperature sensor 6 converts the measured intake air temperature into an electric signal and supplies it to the ECU. The intake air pre...

no. 3 example

[0143] Figure 6-10 A third embodiment of the invention is shown. More specifically, Image 6 is a diagram showing the entire structure of the intake assembly of the third embodiment. Figure 7 is a diagram showing a resin injection port (opening) for injecting a thermosetting resin of the third embodiment. Figure 8 is a diagram showing the main structure of the intake assembly of the third embodiment. Figure 9-10 is a diagram showing the main configuration of the rotation angle detecting device of the third embodiment.

[0144] The intake assembly of this embodiment includes a rotation angle detection device, an intake air temperature sensor 6 and an intake air pressure sensor 7 . The rotation angle detection device includes a magnet 2, a throttle opening sensor 3 and an open yoke. The intake air temperature sensor 6 measures the temperature of intake air supplied into the combustion chamber of the engine (intake intake temperature). Then, the intake air temperature s...

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Abstract

The yoke body (21) and the bending piece (31) of the first yoke segment (4, 206) are respectively opposed to the yoke body (22) and the bending piece (32) of the second yoke segment (5, 207). The bending piece (31, 32) of the first and the second yoke segments (4, 5) holds a rotating angle transducer (3) between them along the board thickness direction of the bending piece (31, 32). The linear distance between the rotation axis of the magnet 203 at the reference position (C) and the furthest point (225) of the exterior surface of the magnet (203) relative to the magnetic detecting element of the detecting element (204) is commonly equal to the linear distance between the rotation axis of the magnet (203) at the reference position (C) and the further end (238, 239, 248, 249) of the yoke open end (237, 247) of the yoke section (206, 207).

Description

technical field [0001] The invention relates to a rotation angle detection device. Background technique [0002] Such as Figure 22 As shown, a previously proposed rotation angle detecting device disclosed in US-5164668B includes a magnet 101, a rotation angle sensor 102 and an open yoke. A magnet 101 is fixed to an axial end of a rotatable shaft of a detection target such as a throttle valve. The rotation angle sensor 102 detects the rotation angle of the detection target by means of an output change characteristic of a magnetic detection device (Hall IC) using the rotation angle sensor 102 with respect to the rotation angle of the magnet 101 . The open yoke cooperates with the magnet 101 and the rotation angle sensor 102 to form a magnetic circuit (for example, an open magnetic path). [0003] The rotation angle sensor 102 has a magnetic detection device fixed on a flat plate 103 . In addition, the open yoke includes two magnetic bodies, first and second magnetic bodies...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/14
Inventor 古川晃若林伸二中野勇次石田伸二樱井公二佐野亮
Owner DENSO CORP