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Motorcycle engine

A technology for engines and motorcycles, which is applied in the field of motorcycle engines, can solve the problems of reduced vehicle passability, difficulty in simultaneously ensuring, and reduced engine height from the ground, so as to achieve the effect of increasing the distance from the ground, solving contradictions, and meeting performance requirements

Inactive Publication Date: 2013-01-09
JIANGMEN DACHANGJIANG GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet the above-mentioned layout requirements of the intake system pipeline, the engine must be moved downward relative to the vehicle frame to ensure that the intake system has enough space for layout, which will reduce the height of the engine from the ground and improve the trafficability of the vehicle. Reduced, cannot well meet the passability requirements in mountainous areas and rural areas
[0004] The center line of the cylinder liner in the cylinder body of a traditional engine passes through the center of the crankshaft bearing hole of the engine case. The above two layout requirements for the traditional engine have obvious contradictions, and it is difficult to ensure

Method used

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Embodiment Construction

[0013] refer to Figure 1~Figure 2 , a kind of motorcycle engine of the present invention, it comprises the engine casing 1 that is arranged at the position below vehicle frame slanting beam 4, is provided with crankshaft assembly 12 in engine casing 1, and the crankshaft in crankshaft assembly 12 passes connecting rod 13 Connected with the piston 5, the front end of the engine case 1 is tilted upwards with a cylinder block 2, the front end refers to the driving direction of the vehicle, the piston 5 is placed in the inner cylinder liner of the cylinder block 2, and the front end of the cylinder block 2 is provided with a cylinder Head 3, cylinder block 2 and cylinder head 3 and frame slanting beam 4 form an air intake system layout space, which is roughly as follows figure 1 In the area surrounded by the dotted line A of the ellipse, the upper end of the cylinder head 3 is provided with an intake pipe joint 31, and the intake pipe joint 31 is connected to the carburetor 6 and...

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Abstract

The invention discloses a motorcycle engine, which comprises an engine box body arranged below an inclined beam of a frame, wherein the front end of the engine box body is obliquely provided with a gas cylinder body upward; the front end of the gas cylinder body is provided with a gas cylinder head; an arrangement space of a gas inlet system is respectively formed between the gas cylinder body and the inclined beam of the frame, as well as between the gas cylinder head and the inclined beam of the frame; the relative positions of the gas cylinder body, the gas cylinder head and the inclined beam of the frame are unchanged; the inclined angle of a center line of a cylinder sleeve in the gas cylinder body relative to the horizontal face is unchanged; the engine box body moves upward as a whole; that is, the center of a crank bearing hole in the engine box body is offset upward to the upper side of the center line of the cylinder sleeve in the gas cylinder body, so that the arrangement spaces of the gas inlet system formed between the gas cylinder body and the inclined beam of the frame, as well as between the gas cylinder head and the inclined beam of the frame, are unchanged; when the arrangement requirements of a gas inlet pipeline system are met, the ground clearance of the engine box body is increased; and therefore, the contradiction between the arrangement space of the gas inlet system in the prior art and the terrain clearance of the engine is solved, and various performance requirements on the driving of vehicles on non-paved roads such as roads in mountainous areas can be met well.

Description

technical field [0001] The invention relates to a motorcycle engine. Background technique [0002] With the acceleration of the country's urbanization process, the number of urban vehicles has expanded rapidly, and the number of cities that restrict motorcycles and prohibit motorcycles from passing through the country is also increasing. The main sales area of ​​motorcycles has shifted to the vast mountainous and rural areas. Most of the roads in these areas are non-paved roads, and there are rough mountain roads and poor country roads with potholes. Therefore, motorcycle engines are required to have a higher ground clearance to ensure good passing performance. Meet the use of various harsh road conditions. [0003] At the same time, for motorcycles used in mountainous areas and rural areas, users also require the engine to have the important characteristics of high torque output at medium and low speeds and low fuel consumption. In order to meet this requirement, it is nec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M7/04
Inventor 林健明
Owner JIANGMEN DACHANGJIANG GROUP CO LTD
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