JPS6271341U

JPS6271341U -

Info

Publication number: JPS6271341U
Application number: JP16221885U
Authority: JP
Priority date: 1985-10-23
Filing date: 1985-10-23
Publication date: 1987-05-07

Description

[Brief explanation of drawings]

第１図は、本考案の一実施例に係る低騒音エン
ジンの正面図、第２図は、従来のエンジンの正面
図、第３図は、エンジンの騒音発生のメカニズム
を説明する説明図、第４図は、第２図のジヤーナ
ル軸受部の拡大縦断面図、第５図は、本出願人が
昭和６０年３月４日付けで出願した実願昭６０―
３０４７３に開示されている低騒音エンジン（但
し、未公知）の正面図である。１……カムシヤフトプーリ、３……クランクシ
ヤフトタイミングプーリ、４……タイミングベル
ト、７……クランクシヤフト、８……カムシヤフ
ト、１０……低騒音エンジン、４３……第１のサ
ブタイミングプーリ、４４……第２のサブタイミ
ングプーリ。 FIG. 1 is a front view of a low-noise engine according to an embodiment of the present invention, FIG. 2 is a front view of a conventional engine, and FIG. 3 is an explanatory diagram illustrating the mechanism of engine noise generation. Figure 4 is an enlarged vertical cross-sectional view of the journal bearing portion in Figure 2, and Figure 5 is the Utility Application No. 1988 filed by the applicant on March 4, 1985.
30473 is a front view of a low-noise engine (but not yet known). 1... Camshaft pulley, 3... Crankshaft timing pulley, 4... Timing belt, 7... Crankshaft, 8... Camshaft, 10... Low noise engine, 43... First sub-timing pulley, 44 ...Second sub-timing pulley.

Claims

[Claim for Utility Model Registration] A timing belt is wound between a camshaft pulley attached to the tip of the camshaft and a crankshaft timing pulley attached to the tip of the crankshaft.
In an engine in which power is thereby transmitted from the crankshaft to the camshaft, the engine is provided with a first sub-timing pulley and a second sub-timing pulley, the first sub-timing pulley The sub-timing pulley and the second sub-timing pulley sandwich the crankshaft timing pulley and are located in a direction opposite to the top dead center of the piston from the crankshaft timing pulley, and the timing belt The timing belt is also wound around the first sub-timing pulley and the second sub-timing pulley, and the timing belt is wound around the first sub-timing pulley and the second sub-timing pulley. A low-noise engine, characterized in that the crankshaft is pulled by the timing belt in a direction opposite to the top dead center of the piston.