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Ventilation structure of engine

An engine and engine case technology, applied in the direction of engine components, machine/engine, crankcase ventilation, etc., to achieve the effect of light weight and improved gas-liquid separation performance

Active Publication Date: 2011-01-26
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, since the upper wall forming the ventilation chamber and the upper wall supporting the speed sensor are separately provided, the engine is enlarged

Method used

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  • Ventilation structure of engine
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  • Ventilation structure of engine

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Embodiment Construction

[0086] figure 1It is a longitudinal cross-sectional view of the motorcycle engine 1 according to the first embodiment of the present invention viewed from the left. In the description of the present embodiment or the drawings, front (F), left (L), right (R) and the like are shown based on the vehicle. The engine case (casing of the engine) of the above-mentioned engine 1 is composed of a crankcase 2 , a cylinder block 3 , a cylinder head 4 , and a cylinder head cover 5 . The crankcase 2 is in the form of being divided into left and right halves, and the detailed structure is as follows image 3 As shown, it is composed of a left crankcase 2L, a right crankcase 2R, a left crankcase cover 6L, and a right crankcase cover 6R. exist figure 1 In the diagram, the left surface (inner surface) of the right crankcase 2R is shown, and the joint surface 2Ra with the left crankcase 2L is shown. In the following description, L is attached to the symbol of the corresponding left member, ...

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Abstract

The invention provides a ventilation structure of an engine. The ventilation structure comprises an engine case for accommodating an air valve transmission mechanism or a transmission, a ventilation chamber for communicating the inside and the outside of the engine case to separate gas blow-by flow, and a detector supported in the engine case and used for detecting the state in the engine case. In the ventilation structure of the engine, miniaturization of the engine is realized by improving the structure of the ventilation chamber. Most of the shape of the detector is columnar, at least one part of the detector is arranged in the ventilation chamber, and a labyrinth sealing ring of the ventilation chamber is formed on the lateral surface of the detector.

Description

technical field [0001] The present invention relates to a ventilation structure of a vehicle engine. Background technique [0002] A configuration is disclosed in which a starter motor, a ventilation chamber, and a speed sensor are disposed on an upper portion of a crankcase (for example, refer to Patent Document 1). [0003] Patent Document 1: Japanese Patent Laid-Open No. 2008-126681 [0004] In the prior art, since the upper wall forming the ventilation chamber and the upper wall supporting the speed sensor are provided separately, the size of the engine is increased. Contents of the invention [0005] The purpose of the present invention is to improve the structure of the ventilation chamber and realize the miniaturization of the engine. [0006] The present invention is a technology that solves the above-mentioned problems, and the ventilation structure of the engine described in Technical Solution 1 has: [0007] Engine cases housing valve trains or transmissions,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01M13/00F01M13/04
CPCF16H57/027
Inventor 原田诚小野丰河洼宽之
Owner HONDA MOTOR CO LTD