JPH02101035U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案を適用した自動二輪車の一例を
示す略示側面図、第２図は同要部の断面図、第３
図は出力特性線図である。 １……エンジン、３，３_１，３_２……排気管、
４……第１マフラ、５……第２マフラ、４_１，５
_１……第１膨張室、６……バルブ、１１……連結
管。 Fig. 1 is a schematic side view showing an example of a motorcycle to which the present invention is applied, Fig. 2 is a sectional view of the main parts, and Fig. 3
The figure is an output characteristic diagram. 1...engine, 3,3 _{1,3 2} ...exhaust pipe,
4...First muffler, 5...Second muffler, 4 ₁ , 5
₁ ...First expansion chamber, 6...Valve, 11...Connecting pipe.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] エンジンのシリンダヘツドに接続された排気管
およびこの排気管から分岐された排気管に第１お
よび第２マフラが接続されたマフラ構造を有する
自動二輪車において、一方の排気管の後端に当該
排気管内を開閉するバルブを設けるとともに第１
、第２マフラの第１膨張室を連結管で接続し、前
記バルブをエンジンの所定回転数に至るまでは閉
じ、所定回転数に至つたとき開らく制御手段を有
してなる自動二輪車の排気消音装置。 In a motorcycle having a muffler structure in which first and second mufflers are connected to an exhaust pipe connected to the cylinder head of the engine and an exhaust pipe branched from this exhaust pipe, the rear end of one exhaust pipe is A valve is provided to open and close the first
, a first expansion chamber of a second muffler is connected by a connecting pipe, and the valve is closed until a predetermined engine speed is reached, and is closed when the engine reaches a predetermined speed, and has control means for opening the valve. Silencer.