Air intake system capable of automatically adjusting air flow and motorcycle thereof

Abstract

The invention discloses an air intake system capable of automatically adjusting an air flow and a motorcycle thereof. The air intake system comprises an air filter and an air flow adjusting system, wherein a primary air intake channel is arranged in the air filter and communicated with an air intake manifold of an engine; the air flow adjusting system comprises a vacuum tank, a negative-pressure valve component, a negative-pressure valve automatic-control system and a secondary air intake channel; and the secondary air intake channel is arranged in the air filter and communicated with the primary air intake channel. The air intake system stores a vacuum degree in the air intake manifold by the vacuum tank and ensures the stability of the vacuum degree under the function of a one-way valve. When a rotating speed reaches a set value, an electromagnetic valve is opened and the negative-pressure valve component is completely opened under the function of the vacuum tank; when the rotating speed is less than the set value, the electromagnetic valve is closed, the negative-pressure valve component is reset and the secondary air intake channel is closed; therefore, the air intake system and the motorcycle can exclude the subjective intervention of a user, ensure the performance of the engine in high-speed running and improve the performance of the engine at intermediate and low rotating speeds to further ensure optimal economic and technical indexes of the engine.

Description

technical field [0001] The invention relates to a motorcycle component and a complete vehicle, in particular to a motorcycle engine intake system and the motorcycle. Background technique [0002] Motorcycles are widely used due to their lightness, flexibility, fast driving and strong road adaptability. [0003] Motorcycle engine is a relatively important equipment for motorcycles, and its running state directly affects the running state and economic indicators of the whole vehicle. When the engine is working, the air-fuel ratio is an important indicator, which determines whether the vehicle's driving conditions and emissions meet environmental protection requirements. The air intake volume is automatically adjusted according to the engine speed. Since the engine intake pipe is fixed, although the intake air volume will not increase proportionally with the increase of the engine speed, the air-fuel ratio cannot meet the combustion requirements, so it will The operating cond...

AI Technical Summary

Problems solved by technology

The air intake volume is automatically adjusted according to the engine speed. Since the engine intake pipe is fixed, although the intake air volume will not increase proportionally with the increase of the engine speed, the air-fuel ratio cannot meet the combustion requirements, so it will The running condition of the engine deteriorates, leading to insufficient combustion; and if the intake air volume is blindly paid attention to, the efficiency of the engine at low speed will be low, resulting in difficulty in starting the vehicl

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