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Internal combustion engine

A technology for internal combustion engines and cylinder heads, which is applied in mechanical equipment, engine components, engine control, etc., can solve the problem of increasing the number of parts, and achieve the effect of reducing the number of parts, suppressing the height, and avoiding large-scale

Active Publication Date: 2013-03-06
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, as disclosed in the above-mentioned Patent Document 1, in the structure where the exhaust gas sensor is disposed, not only does the cylinder head increase in size, but also a cover for covering the exhaust gas sensor is required, resulting in an increase in the number of parts.

Method used

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Embodiment 1

[0050] refer to Figure 1 to Figure 13 Embodiment 1 of the present invention is described, at first in figure 1 Among them, the body frame F of the two-wheeled motorcycle has: a head tube 17 that supports the front fork 15 and the steering handle 16 that pivotally support the front wheel WF in a steerable manner; frame 18; the lower frame 19 that is located below the main frame 18 and is connected to the head pipe 17, and extends backward and downward at a steeper angle than the main frame 18; the main frame 18 A left and right pair of underframes 20 connected between the left and right sides of the rear part of the lower frame 19 and the left and right sides of the lower end of the lower frame 19; A pair of seat rails 21 ; and a pair of left and right rear frames 22 connecting the chassis 20 and the seat rails 21 .

[0051] The underframe 20 integrally has: a first frame portion 20a hanging downward from the lower portion of the lower frame 19; a second frame portion 20b ex...

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Abstract

The invention provides an internal combustion engine, The invention provides an internal combustion engine. An exhaust side rocker arm has a valve connecting portion linked with an exhaust valve and a cam abutting portion abutted with a cam on a cam shaft and is swingingly supported by a rocker arm shaft supported by a cylinder cover. An exhaust outlet is arranged on a cylinder cover. In the internal combustion engine is equipped with an exhaust sensor which strives for miniaturization of the cylinder cover without increasing the number of parts. A valve connecting portion of the exhaust side rocker arm (57E), the cam abutting portion (74) and the rocker arm shaft (46) are arranged in order from upstream side to downstream side of the exhaust outlet (46); and an exhaust sensor (80) under the lower wall (27c) for detecting the property of the exhaust gas flowing in the exhaust outlet (46) is installed on the cylinder cover (27) which covers a side wall (27b) of the rocker arm shaft (56E) from the side surface and covers at least a part of the lower wall (27c) of the rocker arm shaft (56E) from the lower side.

Description

technical field [0001] The present invention relates to an internal combustion engine. In this internal combustion engine, an exhaust side rocker arm has a valve connecting portion interlocked with an exhaust valve and a cam abutting portion abutting against a cam of a camshaft. The exhaust side rocker arm is controlled by A rocker shaft supported by a cylinder head is swingably supported, and the cylinder head is provided with an exhaust port that is switched between communication and blocking with the combustion chamber by the exhaust valve. Background technique [0002] In Patent Document 1, there is known a structure in which, in an SOHC engine having a cylinder head covered by a body cover, a valve device is accommodated in the cylinder head, and when viewed from a direction along the cylinder axis, the valve device is located at The exhaust sensor on the outside of the unit is mounted on the cylinder head. [0003] Patent Document 1: Japanese Patent No. 4152796 [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D35/00F01L1/04F02F1/24F02F1/36
Inventor 原田诚片冈大小野丰矢田裕一斋藤仁史河窪宽之
Owner HONDA MOTOR CO LTD
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