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Internal combustion engine with ignition plug and vehicle provided with the same

A technology for an internal combustion engine and a spark plug, which is applied in the field of internal combustion engines and can solve the problems of reduced engine output and reduced intake air volume.

Active Publication Date: 2009-08-26
YAMAHA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the opening area of ​​the intake port is reduced, a reduction in the amount of intake air is caused, and thus a reduction in engine output occurs

Method used

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  • Internal combustion engine with ignition plug and vehicle provided with the same
  • Internal combustion engine with ignition plug and vehicle provided with the same
  • Internal combustion engine with ignition plug and vehicle provided with the same

Examples

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Embodiment Construction

[0018] Such as figure 1 As shown, the vehicle according to the preferred embodiment is a motorcycle 1 . However, the vehicle according to the preferred embodiment of the present invention is not limited to the motorcycle 1 . Vehicles according to the invention may be other straddle vehicles or other non-straddle vehicles. In addition, "motorcycle" includes small motorcycles and the like other than so-called mopeds.

[0019] The motorcycle 1 includes a vehicle body 2, front wheels 3 and rear wheels 4 mounted to the vehicle body 2, and an engine 5 that drives the rear wheels 4 through a drive chain (not shown). In the preferred embodiment, the engine 5 preferably comprises a single-cylinder four-stroke internal combustion engine. However, the engine 5 is not limited in the number of cylinders and the like.

[0020] Such as figure 2 As shown, the engine 5 includes an engine body 10 , an intake passage 11 and an exhaust passage 12 . Engine block 10 includes housing cranksh...

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PUM

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Abstract

The invention discloses an internal combustion engine, comprising: a cylinder with an inner surface of the cylinder; a cylinder head, which cooperates with the inner surface of the cylinder to define a combustion chamber, and has an inner surface of the cylinder head including an air inlet through which the air inlet Introducing intake air into the combustion chamber; an intake valve that opens and closes the intake port; a spark plug provided on the cylinder head; and an intake drift mechanism that directs the intake air in the intake port toward the axis of the cylinder Drift and create a swirl in the combustion chamber. When the intake valve is open, the minimum gap between the intake valve and the inner surface of the cylinder head is equal to or greater than the gap between the intake valve and the inner surface of the cylinder in the radial direction of the cylinder.

Description

technical field [0001] The invention relates to an internal combustion engine with a spark plug and a vehicle provided with the internal combustion engine. Background technique [0002] In spark-ignition internal combustion engines having an intake port for the intake of the air-fuel mixture and an exhaust port for the discharge of the combustion gases, it is conventionally considered preferable to place the spark plug around the center of the combustion chamber, i.e. near the axis of the cylinder, to improve anti-knock sex. However, there are actually components other than the spark plug provided in the internal combustion engine, and suitable knock resistance cannot necessarily be obtained by simply arranging the spark plug near the cylinder axis regardless of the layout of these other components. Offsetting the spark plug from the cylinder axis toward the intake port has been proposed (see, for example, U.S. Patent No. 5,027,761 for Figure 7 ). [0003] When the spark ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/26
CPCY02T10/146F02B31/06Y02T10/12
Inventor 大久保明彦二口顺夫河部秀明
Owner YAMAHA MOTOR CO LTD
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