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Engine for saddle riding-type vehicle and saddle riding-type vehicle with the same

A saddle-riding, engine technology, applied to engine components, machines/engines, vehicle parts, etc., can solve the problems of reduced engine performance and small space in the crankcase

Active Publication Date: 2006-11-29
YAMAHA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the size of the crankcase, etc. becomes large, the space between the crankcase, etc., and the vehicle body becomes small, making it difficult to install an air intake part above the crankcase
[0009] In addition, since the engine is equipped with a balancer, the effect of suppressing vibration can be produced by this balancer. On the other hand, the drive of the balancer is accompanied by an increase in sliding resistance, which may cause a decrease in engine performance.

Method used

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  • Engine for saddle riding-type vehicle and saddle riding-type vehicle with the same
  • Engine for saddle riding-type vehicle and saddle riding-type vehicle with the same
  • Engine for saddle riding-type vehicle and saddle riding-type vehicle with the same

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Embodiment Construction

[0062] Embodiments of the present invention are described below with reference to the drawings. However, the examples described below illustrate the present invention, and the present invention is not limited to the examples. Therefore, the present invention can be realized in various configurations without departing from the gist thereof. In addition, front, rear, left, and right in this embodiment refer to front, rear (traveling direction corresponds to the front) and left, right when sitting on the motorcycle seat.

[0063] figure 1 A motorcycle 1 mounted with an engine according to the present embodiment is shown. Although it will be described in detail below, the engine according to the present embodiment has a built-in continuously variable transmission. The head pipe 3 is fixed to the front end of the frame 1a. The front fork 5 is supported by the head pipe 3 so as to be steerable in the left and right directions. The front wheel 4 is supported on the lower end of ...

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Abstract

An engine has components and devices such as a cylinder block (19) inside which a cylinder is formed, a crankshaft (28), a drive shaft (48), an automatic speed changer, and a balancer weight (129a). The automatic speed changer has a primary sheave, a secondary sheave, and a V-belt carried on the primary sheave and the secondary sheave. The automatic speed changer is received in a speed changer case (45). In a side view, the axis (C) of the crankshaft (28) is offset upward from the center line (A) of the cylinder.

Description

technical field [0001] The present invention relates to an engine for a saddle-riding vehicle and a saddle-riding vehicle equipped with such an engine. Background technique [0002] Saddle-riding vehicles are widely used as, for example, motorcycles and the like. Generally, for an engine used for a motorcycle or the like, a cylinder block, a crankcase, etc. are formed such that the axis of the cylinder block (ie, the center line of the cylinder) and the axis of the crankcase intersect each other. On the other hand, an engine in which the axis of the cylinder block deviates from the axis of the crankcase in order to shorten the length of the engine in the front-rear direction is also known. JP-A-2002-227601 (hereinafter referred to as Patent Document 1) discloses such an engine. [0003] The engine disclosed in Patent Document 1 includes a transmission housed in a crankcase. The speed changer is composed of a speed change input shaft, a speed change output shaft and a plur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B61/02B62M7/02B62M9/08B60K17/06B62J99/00F02B67/00F02B75/26F02F7/00
CPCF02B61/02F02F7/0019
Inventor 增田辰哉石田洋介
Owner YAMAHA MOTOR CO LTD
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