Active-type controlling mechanism

Abstract

The invention discloses an active-type controlling mechanism and belongs to the technical field of internal combustion engines. The mechanism comprises an engine intake pipe, an engine, an engine exhaust pipe, a connecting pipe, inner pipes, an adjusting cavity, a controlling cavity and a rotating shaft, the adjusting cavity and the controlling cavity are coaxially connected through the rotating shaft, an upper wall surface of a second inner pipe is connected with a baffle through a spring, one end of a second connecting pipe is communicated with a first inner pipe after penetrating through a fixed object, the other end of the second connecting pipe is communicated with the engine exhaust pipe between a catalyst pack and a silencer. When the engine operates in a low speed condition, the volume of the intake pipe is bigger, and when the engine operates in a high speed condition, the volume of the intake pipe is smaller, and the volume of the intake pipe is self-adjusted. The active-type controlling mechanism is reasonable in design, simple in structure, and suitable for optimizing the design of the intake system of a naturally aspirated internal combustion engine.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, and in particular relates to an active control mechanism capable of realizing the self-regulation of the volume of an intake pipe of a naturally aspirated engine. Background technique [0002] Present engines can be divided into naturally aspirated and supercharged, and supercharged can be divided into mechanical supercharging, turbocharging and the latest air wave supercharging. The naturally aspirated type does not have a supercharger, which means that the air simply passes through the air filter, throttle valve, and intake manifold to reach the cylinder, and gasoline is directly injected into the intake manifold through the fuel injector. Taking a four-cylinder engine as an example, a piston has four strokes for one work: down (the intake valve opens, there is a pressure difference, and the mixture of air and fuel enters the cylinder under the action of the pressure differe...

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Problems solved by technology

[0003] After searching the existing literature, it is found that the patent application number is 20142022823.6, and the patent technology named variable intake manifold for small displacement engines provides a two-stage variable exhaust pipe volume technology, but it cannot Continuously variable reality

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