Vehicle air intake device and method based on fsae racing car

Abstract

The invention relates to the technical field of vehicle control, and discloses a vehicle air inlet device and method based on the FASE motorcycle race, so that the air inlet performance is improved. The method includes the steps that a rotating blade driven by a motor is arranged in an air inlet pipe, a turbine blade driven by waste gas energy is arranged in an exhaust pipe, and the rotating bladeand the turbine blade are coaxially arranged to achieve linkage to form air inlet pressurization in the coincident working direction; after a vehicle engine is started, the vehicle wheel speed is detected, whether the current real-time wheel speed reaches a switching threshold value or not is judged, and the rotating blade is driven by the motor to conduct air inlet pressurization when the real-time wheel speed is smaller than the switching threshold value; and when the real-time wheel speed is equal to or larger than the switching threshold value, the motor stops power output, and it is switched that the waste gas energy drives the turbine blade to conduct air inlet pressurization.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a vehicle air intake device and method based on an FSAE racing car. Background technique [0002] The student formula racing competition (FSAE, Formula SAE) has now attracted many domestic universities to join in research, design, manufacture and debugging. The competition rules include: for engine requirements including engine displacement less than or equal to 750cc, the intake system must pass through a circular intake restrictor valve with a diameter of 20mm, and the intake restrictor valve is installed in the engine intake system. between the throttle and the engine. On the one hand, the air intake restrictor valve brings safety and balance to the design, manufacture and competition of Formula Student racing cars. But on the other hand, it affects the intake charge coefficient of the engine at low, medium and high speeds. When designing, under the premise of FSAE r...

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Problems solved by technology

But on the other hand, it affects the intake charge coefficient of the engine at low, medium and high speeds. When designing, under the premise of FSAE racing rules, if the intake system is not designed properly, it will seriously affect the torque of the car at low, medium and high speeds. , power output, thus affecting the performance of the game

[0003] The air intake restrictor valve device specially set for FSAE, under normal circumstances, when the engine starts at low speed, it will obviously feel that the intake air is insufficient, because the end pressure of the intake air brought by the restrictor valve is reduced, the intake effect is reduced, and the engine Incomplete combustion, lack of power, resulting in relatively lagging start drive

If the conventional exhaust gas turbocharging method is adopted, because the exhaust gas turbocharging method mainly relies on the exhaust gas to drive the turbine to rotate so as to make the compressor coaxial with the turbine work, and then inhale more fresh air. However, when the FSAE is at the starting low speed In the stage, the energy of the exhaust gas is relatively low, which is not enough to drive the turbine to rotate at a high speed, resulting in low efficiency of the compressor, poor air intake effect, and insignificant starting improvement effect. Due to the turbocharging of the exhaust gas, the FSAE racing car will experience turbo lag at the start This phenomenon will have a significant adverse effect on FSAE races where the results are calculated in seconds

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