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Structure of cam rotating sensor fixed part

A technology of rotating sensors and fixing parts, applied in valve devices, measuring devices, instruments, etc., can solve the problems that sensors are easily affected by engine vibration and increase extra cost.

Inactive Publication Date: 2005-06-15
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, according to the above-mentioned conventional structure, the cylinder cover is connected to the cylinder head by a seal comprising a soft sealing material or the like inserted between the cover and the cylinder head, so that the sensor is susceptible to engine vibration.
In addition, for the assembly between the cover and the cylinder head, high assembly accuracy is not required at all, so when trying to improve the positioning accuracy of the sensor relative to a camshaft or camshafts, it causes the disadvantage of adding additional costs

Method used

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  • Structure of cam rotating sensor fixed part
  • Structure of cam rotating sensor fixed part
  • Structure of cam rotating sensor fixed part

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Embodiment Construction

[0012] In order to achieve the above object, according to an aspect of the present invention, there is provided a device in which a cam rotation sensor fixing portion of a cam rotation sensor for detecting a sensor supported on a cam frame (lower cam frame 12 and upper cam frame 13) is fixed. The angle of rotation of the camshaft (1, 3) of the present invention, in this device of the present invention, to-be-detected part (bulge 8) is arranged on the thrust plate (17), and this thrust plate is fixed on the shaft end of camshaft part, so that it fits the axial end surface (thrust receiving surface 31) of the cam frame, so as to control the axial position of the camshaft, and is used to detect the sensor (proximity sensor 23) that the part to be detected has turned from the axial direction of the camshaft ) is fixed on a part (sensor fixing wall 20) integral with the cam frame. According to this structure, since the relative positioning accuracy between the detected portion and ...

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Abstract

A structure of a fixed part of a cam rotation sensor, in which a cam rotation sensor for detecting the rotation angle of a camshaft supported on a cam frame (on a lower cam frame and an upper cam frame) is installed, the structure is characterized in that the part to be detected (protruding part) is arranged on the thrust plate (17), and the thrust plate is fixed on the axial end of the camshaft so that it fits with the axial end surface of the cam frame so as to control the axial position of the camshaft, Also, a sensor for detecting the rotation of the portion to be detected from the axial direction of the camshaft is fixed to a member whose wall is integral with the cam frame.

Description

technical field [0001] The present invention relates to an apparatus in which a cam rotation sensor fixing portion of a cam rotation sensor for detecting a rotation angle of a camshaft supported on a cam carrier is fixed. Background technique [0002] Fuel injected engines are equipped with sensors for detecting one or more angles of rotation of one or more camshafts in order to synchronize the operating timing of the injection valves with the angle of rotation of the camshaft or camshafts. Japanese Patent Unexamined Publication No. Hei 4-287841 (JP-A-287841) discloses a structure in which a cam rotation sensor is fixed to a cylinder cover. [0003] However, according to the above-mentioned conventional structure, the cylinder cover is connected to the cylinder head by a seal comprising a soft sealing material or the like interposed between the cover and the cylinder head, and thus the sensor is susceptible to engine vibration. In addition, the assembly between the cover an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/22F01L1/053F01L1/344F01L1/46F02B77/08F02D35/00F02P7/067
CPCF01L1/053F01L1/344F01L1/46F01L2001/0537F01L2001/34433F01L2001/34496F01L2820/041F02P7/0677
Inventor 小林寿喜伊原丘
Owner HONDA MOTOR CO LTD