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Pressure reducing apparatus of engine

A decompression device and engine technology, applied in the direction of engine components, combustion engines, machines/engines, etc., to achieve the effects of improving maneuverability, preventing shaking, and reducing the contact area

Active Publication Date: 2009-08-05
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the decompression device disclosed in Patent Document 1, the decompression counterweight is rotatably supported via the decompression pin on the decompression holder fastened to the camshaft. When viewed from the direction, a part of the above-mentioned decompression pin is arranged outside the high part of the exhaust cam, and in the radial direction of the camshaft, the decompression device is enlarged, which leads to an increase in the size of the cylinder head.

Method used

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  • Pressure reducing apparatus of engine
  • Pressure reducing apparatus of engine
  • Pressure reducing apparatus of engine

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Embodiment Construction

[0012] Hereinafter, an embodiment of the present invention will be described based on an embodiment of the present invention shown in the drawings.

[0013] Figure 1 to Figure 6 is a diagram showing an embodiment of the present invention, figure 1 It is a longitudinal sectional view of the main parts of the engine, figure 2 yes figure 1 2-2 line sectional view of the, image 3 is decompression closed figure 2 The 3-3 line enlarged sectional view of the, Figure 4 is decompression closed figure 2 The 4-4 line enlarged cross-sectional view, Figure 5 is an exploded perspective view of the decompression device, Figure 6 is the decompression-on state with Figure 4 Corresponding sectional view.

[0014] First, in figure 1 Among them, the engine main body 11 of this engine is, for example, an engine main body mounted on a two-wheeled motorcycle, and the above-mentioned engine main body 11 is provided with: a cylinder block 12 having a cylinder bore 16 that allows the...

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Abstract

The invention relates to a decompression device for an engine. An exhaust cam is arranged on a camshaft supported by a cylinder head rotated freely. A decompression cam capable of protruding from a base circle portion of the exhaust cam is connected on a decompression weight rotatably supported on the camshaft through a decompression pin having an axle parallel to the camshaft so as to compact the decompression device in a manner of minimizing the cylinder head. The decompression pin (55) is configured inside compared to the outer periphery of a high-position part (40b) of the exhaust cam (40) from the axle direction of the camshaft (30).

Description

technical field [0001] The present invention relates to a decompression device for an engine. In the decompression device of the engine, the camshaft rotatably supported by the cylinder head is provided with the following device in order to drive the exhaust valve to open by the above-mentioned high part. The arc-shaped base circle part with the axis of the camshaft as the center, and the exhaust cam at the high position protruding outward from the base circle part and connected to both ends of the base circle direction in the circumferential direction are A decompression pin having an axis parallel to the camshaft is rotatably supported by a decompression counterweight on the camshaft, and a decompression cam protruding from the base circle portion is connected thereto. Background technique [0002] Such a decompression device is known from Patent Document 1, for example. Patent Document 1: Japanese Patent No. 3435951 [0003] However, in the decompression device disclos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L13/08
CPCF01L1/053F01L13/08F01L2001/0535F02F1/24F01L2305/00Y02T10/12
Inventor 小林宏治山西辉英大城健史
Owner HONDA MOTOR CO LTD