CN219605380U - Exhaust system of FSAE racing car - Google Patents

Abstract

The utility model provides an exhaust system of an FSAE racing car, which consists of an exhaust pipeline and a silencer. The exhaust pipeline is connected with the engine through a flange, the pipeline consists of an exhaust manifold and an exhaust manifold, and the length of the exhaust manifold can enable the most commonly used engine speed interval to exert the maximum power. The beneficial effects of the utility model are that play to reduce exhaust interference, reduce exhaust resistance, easy to assemble and extension exhaust noise elimination system life-span, furthest improves the exhaust efficiency of engine under the prerequisite of guaranteeing the lightweight simultaneously. The muffler is a resistance composite muffler, is formed by combining a resistance muffler unit and a sound absorption material, and has the common characteristics of resistance and resistance mufflers. Has good silencing effect on low, medium and high frequency noise.

Description

Exhaust system of FSAE racing car

Technical Field

The utility model relates to a device for improving the exhaust efficiency of an engine under a certain condition, in particular to a stable, vibration-damping and noise-reducing exhaust system.

Background

With the rapid development of Chinese economy and the rapid development of automobile industry in recent years, small formula car racing cars are becoming entertainment products and consumer products for people. Since the designer limits the maximum power of the engine through a restriction valve of a specific caliber in order to ensure the safety of the driver. Resulting in an increased impact of the exhaust system on engine power.

The energy and environment are two great lessons facing the development of the automobile industry in the 21 st century, with the rapid development of the automobile industry, the problems of automobile noise and exhaust pollution are increasingly serious, and the vibration and noise in the exhaust system of the engine are the main factors influencing the driving comfort of the automobile, so that the design of modern automobiles, especially the design of the exhaust system, is more focused on the design of vibration reduction based on the background. It is therefore necessary to design a stable, vibration-damping, noise-reducing, exhaust system that improves exhaust efficiency.

Disclosure of Invention

The utility model aims to provide an exhaust system which is stable, vibration-damping, noise-reducing and capable of improving exhaust efficiency, the structure of which supports the simple and convenient disassembly of a silencer, and meanwhile, the disturbance of exhaust pressure temperature sensor signals caused by interference and non-uniformity between exhaust airflows can be reduced, and the power output performance of an engine is improved.

In order to solve the technical problem, the present utility model provides an exhaust system of an FSAE racing car, comprising: a connector connecting the flange of the engine and the exhaust manifold with the muffler; the cross-sectional radius of the exhaust manifold at the junction with the exhaust manifold is greater than the radius of the exhaust manifold.

In a preferred embodiment: the muffler is a resistive muffler, and muffles through a baffle, a pipeline and a sound absorbing material.

In a preferred embodiment: the exhaust pipeline is connected with the engine through a flange, and a circle of sealing groove for containing structural adhesive is formed in the middle of the flange to ensure the connection firmness and the cavity air tightness.

In a preferred embodiment: an exhaust pressure and temperature sensor is arranged on the exhaust manifold.

In a preferred embodiment: the exhaust manifold is of a symmetrical structure.

In a preferred embodiment: the length of the exhaust manifold is 100mm.

Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:

the utility model provides an exhaust system of an FSAE racing car, which can form positive and negative pressure waves in an exhaust pipe due to the action of exhaust pulse in the intermittent and regular exhaust process of an engine and can alternately propagate in a reciprocating way at a sound speed. The exhaust manifold length determined after calculation has a suction effect on exhaust gas in a cylinder, and can improve the scavenging coefficient, thereby improving the charge coefficient, realizing the stability, vibration reduction and noise reduction of the exhaust gas at a certain engine speed and improving the engine power.

Therefore, the utility model can improve the stability, vibration reduction and noise reduction of the engine exhaust system, reduce the exhaust interference and the non-uniformity, and furthest improve the exhaust efficiency of the engine on the premise of ensuring the light weight.

Drawings

FIG. 1 is a schematic diagram of a preferred embodiment of the present utility model.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.

In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," configured to, "" engaged with, "" connected to, "and the like are to be construed broadly, and may be, for example," connected to, "wall-mounted," connected to, removably connected to, or integrally connected to, mechanically connected to, electrically connected to, directly connected to, or indirectly connected to, through an intermediary, and may be in communication with each other between two elements, as will be apparent to those of ordinary skill in the art, in view of the detailed description of the terms herein.

Referring to fig. 1, the present embodiment provides an exhaust system for FSAE racing cars comprising a flange 1 for connecting an engine and a connector for connecting an exhaust manifold 4 with a muffler 5. The radius of the section of the exhaust manifold 4 at the position of connecting the exhaust manifold 3 is larger than the radius of the exhaust manifold 3, a local vacuum area is formed, the air pressure is smaller than the air pressure in the exhaust manifold 3, and the effect of increasing the flow speed of the exhaust air flow is achieved.

In this embodiment, the muffler 5 is a resistive muffler 5, and muffles by using a partition, a pipe, and a sound absorbing material. The pipeline is connected with the engine through the flange 1, and in order to ensure the connection firmness and the cavity air tightness, the middle position of the flange 1 comprises a circle of sealing grooves for containing structural adhesive.

The exhaust manifold 3 is provided with an exhaust pressure temperature sensor. The exhaust manifold 3 is of a symmetrical structure, so that the exhaust non-uniformity and the interference among the exhaust of each cylinder are effectively reduced. The length of the exhaust manifold 3 is 100mm, so that the interference among the exhaust of each cylinder is effectively reduced.

The foregoing is only a preferred embodiment of the present utility model, but the design concept of the present utility model is not limited thereto, and any person skilled in the art will be able to make insubstantial modifications of the present utility model within the scope of the present utility model disclosed herein by this concept, which falls within the actions of invading the protection scope of the present utility model.

Claims (6)

1. An exhaust system for an FSAE racing car comprising: a connector connecting the flange of the engine and the exhaust manifold with the muffler; the cross-sectional radius of the exhaust manifold at the junction with the exhaust manifold is greater than the radius of the exhaust manifold.

2. The exhaust system of an FSAE racing car of claim 1 wherein: the muffler is a resistive muffler, and muffles through a baffle, a pipeline and a sound absorbing material.

3. The exhaust system of an FSAE racing car of claim 1 wherein: the exhaust manifold is connected with the engine through a flange, and a circle of sealing groove for containing structural adhesive is formed in the middle of the flange to ensure the connection firmness and the cavity air tightness.

4. The exhaust system of an FSAE racing car of claim 1 wherein: an exhaust pressure and temperature sensor is arranged on the exhaust manifold.

5. The exhaust system of an FSAE racing car of claim 1 wherein: the exhaust manifold is of a symmetrical structure.

6. The exhaust system of an FSAE racing car of claim 1 wherein: the length of the exhaust manifold is 100mm.