CN201925065U - Novel variable air inlet manifold of engine - Google Patents

Abstract

The utility model discloses a novel variable air inlet manifold of an engine. The air inlet manifold forms a spiral shape and is provided with an air inlet end and an air outlet end. A long air passage and a short air passage are arranged in an air passage inside the air inlet manifold. A rotary valve plate is arranged at the cross section of air inlets of the long air passage and the short air passage. When the rotary valve plate rotates to the air inlet position of the short air passage, the short air passage is closed, and the long air passage is opened, so that the air inlet manifold with a long air passage is formed. When the rotary valve plate rotates to the air inlet position of the long air passage, the short air passage is opened, and the long air passage is closed, so that the air inlet manifold with a short air passage is formed. As the technical scheme is adopted and the rotary valve plate is arranged to switch the long air passage and the short air passage, the length of the air passage of the air inlet manifold of the engine is variable, the requirement of air charging efficiency of the engine under various working conditions is satisfied and the integral operation property of the engine is enhanced. In addition, the main body of the rotary valve plate forms a circular arc shape, so that the rotary valve plate is convenient to guide the air flow in the air passage.

Description

A New Type of Engine Variable Intake Manifold

technical field

The utility model belongs to the technical field of vehicle engines, in particular, the utility model relates to a novel engine variable intake manifold.

Background technique

The operating speed range of the vehicle engine is wide. In the entire operating speed range, the intake air volume required for each working condition is different, and the gas enters the cylinder through the intake manifold. However, the airflow pattern at the nozzle of the intake manifold installed on the engine is unchanged at present, which affects the flow rate and flow rate of the gas, resulting in insufficient and uniform mixing of fuel and air, low combustion efficiency, and low fuel economy; At the same time, in the entire working range of the engine, a thin and long intake manifold is required at medium and low speeds to obtain high torque output at low speeds, and a short and thick intake manifold is required at medium and high speeds to obtain high power . However, the length of the intake manifold of the current engine is invariable. When the engine is running at high speed or under heavy load, the use of an overly long intake manifold will lead to insufficient charging efficiency, reduced engine power, and insufficient engine power. When running at low speed or with small load, if the length of the intake manifold is too short, the gas cannot achieve inertial supercharging to improve charging efficiency, resulting in a decrease in engine torque.

Utility model content

The technical problem to be solved by the utility model is to provide a new type of variable intake manifold for the engine, so as to meet the requirements of the engine for charging efficiency under various working conditions and improve the overall working performance of the engine.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a new type of engine variable intake manifold, the intake manifold is helical, with an inlet end and an outlet end; The air passage in the manifold is provided with a long air passage and a short air passage, and a rotary valve plate is arranged at the junction of the air inlet of the long air passage and the short air passage, and the intake manifold at the place where the rotary valve plate is arranged Compatible with the airway of the tube.

One end of the rotary valve plate is fixed in the intake manifold through a rotating shaft, its body is arc-shaped, and the top of the arc is set towards the air intake of the long air passage.

The rotary valve plate rotates to the air inlet position of the short air channel, the short air channel is closed, and the long air channel is opened to form an intake manifold with a long air channel; when the rotary valve plate rotates to the At the inlet position of the long airway, the short airway is opened, and the long airway is closed, forming an intake manifold with a short airway.

A flange is provided at the intake end of the intake manifold, and a sealing groove is provided on the flange surface.

The utility model realizes that the length of the air passage of the engine intake manifold is variable by setting a long air passage and a short air passage in the intake manifold of the engine, and by setting a rotating valve plate to switch between the long air passage and the short air passage. To meet the requirements of the engine for charging efficiency under various working conditions, and improve the overall performance of the engine; in addition, the body of the rotary valve plate is arc-shaped, which is convenient for guiding the airflow in the air passage.

Description of drawings

Fig. 1 is the structural representation of the utility model, and the arrow represents the airflow direction among the figure;

The marks in the above figures are: 1. Intake manifold; 2. Flange; 3. Short air passage; 4. Rotary valve plate; 5. Long air passage; 6. Rotary shaft.

Detailed ways

As shown in Figure 1, a new type of engine variable intake manifold, the intake manifold 1 is helical, provided with an intake end and an air outlet; in the air passage in the intake manifold 1, a Long air channel 5 and short air channel 3; Rotary valve plate 4 is provided at the junction of the air inlet of described long air channel 5 and short air channel 3, and rotary valve plate 4 is fixed on the described by rotating shaft 6 at its one end. In the intake manifold 1, and cooperate with the air channel of the intake manifold 1 where it is set.

When the engine is running at medium and low speeds, the rotary valve plate 4 rotates to the air intake position of the short air passage 3, the short air passage 3 is closed, and the long air passage 5 is opened to form an intake manifold 1 with a long air passage. Entering the cylinder from the long intake manifold 1, the air flow inertia increases, which can increase the engine output torque and make the engine have better fuel economy; when the engine is running at high speed, the rotary valve plate 4 rotates to the long air At the position of the air inlet of channel 5, the short air channel 3 is opened, and the long air channel 5 is closed to form an intake manifold 1 with a short air channel. The air flow enters the cylinder from the short intake manifold 1, which can improve the charging efficiency. Increase the power of the engine to ensure the dynamic performance of the engine at high speed.

The body of the rotary valve plate 4 is arc-shaped, and the top of the arc is arranged toward the air inlet of the long air passage 5, which is convenient for guiding the air flow in the air passage.

A flange 2 is provided at the intake end of the intake manifold 1, and a sealing groove is provided on the flange surface to ensure the sealing of the intake manifold 1 at the joint and prevent gas leakage.

The utility model realizes the engine intake manifold by setting the long air passage 5 and the short air passage 3 in the intake manifold 1 of the engine, and by setting the rotary valve plate 4 to switch the long air passage 5 and the short air passage 3 1. The length of the air passage is variable to meet the requirements of the engine for charging efficiency under various working conditions and improve the overall performance of the engine.

The utility model has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited by the above-mentioned method, as long as various insubstantial improvements are made by adopting the method concept and technical solution of the utility model, or Directly applying the ideas and technical solutions of the utility model to other occasions without improvement is within the protection scope of the utility model.

Claims (4)

1. new work engine variable intake manifold, it is characterized in that: described intake manifold (1) is a helical, is provided with inlet end and outlet side; Be provided with long air flue (5) and lose heart (3) in the air flue in described intake manifold (1), intersection at the suction port of described long air flue (5) and lose heart (3) is provided with rotary valve plate (4), and described rotary valve plate (4) matches with the air flue of the intake manifold (1) of its placement.

2. according to right 1 described new work engine variable intake manifold, it is characterized in that: described rotary valve plate (4) is fixed in the described intake manifold (1) by rotating shaft (6) at the one end, its body is circular-arc, and the arc top is towards the suction port setting of described long air flue (5).

3. new work engine variable intake manifold according to claim 2, it is characterized in that: described rotary valve plate (4) rotates to the suction port position of described losing heart (3), lose heart (3) close, long air flue (5) is opened, and forms to have the intake manifold (1) of long air flue; When described rotary valve plate (4) rotates to the suction port position of described long air flue (5), open lose heart (3), and long air flue (5) is closed, and formation has the intake manifold (1) of short air flue.

4. new work engine variable intake manifold according to claim 3 is characterized in that: the inlet end in described intake manifold (1) is provided with flange (2), and seal groove is set on flanged surface.

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