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Air cooling internal combustion engine with sensor for detecting ic engine state

An internal combustion engine and sensor technology, which is used in machine/engine, engine cooling, air cooling, etc., to suppress resistance changes, improve exhaust purification performance, and have a large degree of configuration freedom.

Active Publication Date: 2007-07-04
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in order to prevent the sensors and wires from becoming overheated by the heat from the internal combustion engine, they need to be cooled appropriately, so there are restrictions on the arrangement of the sensors and wires, or on the contrary, the arrangement of peripheral parts placed near the sensors and wires.

Method used

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  • Air cooling internal combustion engine with sensor for detecting ic engine state
  • Air cooling internal combustion engine with sensor for detecting ic engine state
  • Air cooling internal combustion engine with sensor for detecting ic engine state

Examples

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Embodiment Construction

[0028] Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 6 .

[0029] First, referring to FIGS. 1 and 2 , an air-cooled internal combustion engine E employed in the present invention is mounted on a two-wheeled vehicle as a vehicle together with a power transmission device having a V-belt automatic transmission M.

[0030] The internal-combustion engine E supported by the vehicle body is a single-cylinder 4-stroke internal-combustion engine in a horizontal configuration with the rotation center line L1 of the crankshaft 7 pointing to the left and right directions, and has a cylinder 1 in the direction of the cylinder axis L2 (hereinafter referred to as (cylinder axis direction) ) The crankcase 2 combined with the crankshaft 7 side of the cylinder 1, the cylinder head 3 combined with the anti-crankshaft 7 side of the cylinder 1 in the cylinder axis direction, and the cylinder head cover 4 combined with the cylinder head 3 constitute...

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Abstract

An air-cooled internal combustion engine which ensures the protective function and cooling performance of a sensor and wires connected to the sensor with a simple structure, and has a large degree of freedom in the arrangement of the sensor. An air-cooled internal combustion engine (E) that is forced to be air-cooled by a cooling fan (40) has a shroud (45) that forms a cooling air ventilation path (46) that surrounds the cylinder head and the cylinder by covering the cylinder head (3) and the cylinder (1) . The oxygen concentration sensor (70) that is installed on the cylinder head and the oil temperature sensor (75) that is installed on the cylinder (1), and the electric wire (71,76) that is connected with each sensor (70,75) is configured as ventilation passage ( 46) on. In addition, each electric wire is arranged upstream of the cooling air of the cylinder head and the cylinder.

Description

technical field [0001] The present invention relates to an air-cooled internal combustion engine mounted on a vehicle, for example, having a sensor for detecting the state of the internal combustion engine and a shroud forming a ventilation passage for cooling air surrounding the main body of the internal combustion engine. technical background [0002] In order to detect the engine temperature of an air-cooled internal combustion engine, there is known an air-cooled internal combustion engine in which a shroud is formed to surround a cooling air passage of the engine main body (see, for example, Patent Document 1). In addition, an internal combustion engine having an exhaust gas sensor that detects the property of exhaust gas as the state of the internal combustion engine is also known (for example, refer to Patent Document 2). [0003] Patent Document 1: JP-A-2004-11436 [0004] Patent Document 2: JP-A-2004-316430 [0005] However, in the case where the sensor detecting ...

Claims

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Application Information

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IPC IPC(8): F02D35/00F01P1/06F01P5/06
CPCF01P1/06F01P5/02F02D35/0015F02F1/24
Inventor 掛水贤一郎
Owner HONDA MOTOR CO LTD
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