CN201486704U

CN201486704U - Modified structure for flow-limiting valve of racing car engine

Info

Publication number: CN201486704U
Application number: CN 200920139772
Authority: CN
Inventors: 许建民; 刘金武; 易际明; 李晓宇
Original assignee: Xiamen University of Technology
Current assignee: Xiamen University of Technology
Priority date: 2009-07-27
Filing date: 2009-07-27
Publication date: 2010-05-26
Anticipated expiration: 2019-07-27

Abstract

The utility model discloses a modified structure for a flow-limiting valve of a racing car engine, which is a tubular member, wherein a hollow ventilation pipe cavity is a streamline pipe cavity, and the inner diameter of the hollow ventilation pipe cavity is gradually reduced. By designing the hollow ventilation pipe cavity as the streamline pipe cavity and the gradually reduced inner diameter, the modified structure for a flow-limiting valve of a racing car engine is capable of reducing sudden change of air inflow, stabilizing air inflow effect, and guaranteeing all air inflow of an engine to pass through the flow-limiting valve without violating the SAE racing rule that a maximum inner diameter of a flow-limiting valve is 20mm. Additionally, the streamline air passing through portion is capable of greatly improving atomization effect of injection oil, simultaneously enhancing air inflow efficiency of the engine, and ultimately improving power and emission performance of the engine.

Description

The improvement structure of the flow-limiting valve of racing engine

Technical field

The utility model relates to a kind of flow-limiting valve, particularly relates to a kind of improvement structure of flow-limiting valve of racing engine.

Background technique

Engine aspirating system is the component aggregate that air or mixed gas import engine cylinder.Engine aspirating system comprises: air-strainer, intake manifold, throttle mechanisms.Air flows through Air flow meter after air-strainer filters out impurity, enter intake manifold via intake duct, mixes the oil gas that the back forms proper proportion with the gasoline of oil nozzle ejection, sends into ignition in the cylinder by intake valve, produces power.The effect of gas handling system is to provide cleaning, drying, air that temperature is suitable to burn to reduce engine scuffing to greatest extent and to keep best engine performance to motor; The reasonable maintenance shop of accepting the user filters dust effectively and intake resistance is remained in the limit value of regulation every interior.

The SAE match is founded in 1979 by U.S. vehicle SE, the university student of match request race-entry with one-year age, be no more than under 25000 dollars the funds, develop an air displacement and be the 610C.C. racing car of lying fallow following holiday, assembling must be simple, can allow midget plant produce four ones every day at least.This match emphasis is not than soon, and is intended to make safety and maneuverable contest type vehicle.

Along with the flourish and various countries of automotive industry strengthen the automotive industry talent's cultivation, more and more countries, increasing school begins to participate in the FSAE contest.The level that racing car is made is also in continuous lifting.For example increasing fleet begins to consider the factor of aspects such as aerodynamics and aesthetics.Simultaneously, laws of the game are also constantly perfect.Through the evolution in twenties years, the basic structure of racing car was decided, and adopted the non-bearing formula as vehicle body, adopted engine at extreme rear or the like.

In U.S. F-SAE racing car, in order to guarantee the justice of racing car, all air inlets of racing car rule request motor all will be passed through flow-limiting valve, with the gas flow that restriction enters, make the air inflow of all racing cars all the same.The structure of existing racing engine gas handling system (shown in Figure 1A) is: it comprise air-strainer 1 ', resonant cavity 2 ', curved rubber hose 3 ', throttle valve body 4 ', flow-limiting valve 5 ', engine tube 7 '; Described air-strainer 1 ', resonant cavity 2 ', curved rubber hose 3 ', throttle valve body 4 ', flow-limiting valve 5 ', the serial connection of engine tube 7 ' in regular turn is fixed together and forms a racing engine gas handling system.Because flow-limiting valve 5 ' be on the intake duct.It is 20mm that laws of the game require maximum inner diameter.From initial start-up machine intake duct air inlet caliber.Intake duct is suddenlyd change to 20mm by internal diameter 43mm, and the tube chamber 51 of existing system flow-limiting valve 5 ' (shown in Figure 1B) ' be columnar structured, right and wrong are fairshaped, has sudden change, this will cause following defective: after 1, flow-limiting valve was installed, the gasoline that does not have atomizing that is sprayed onto on the flow-limiting valve was difficult to enter motor again; 2, mixed gas intake resistance when flowing through flow-limiting valve is very big, the intake efficiency variation, thus cause engine power performance to descend the emission performance variation.

The model utility content

The purpose of this utility model is to provide a kind of optimizes the oil spout effect, improve the improvement structure of flow-limiting valve of the racing engine of intake efficiency and motor overall efficiency.

For achieving the above object, technical solution of the present utility model is:

The utility model is a kind of improvement structure of flow-limiting valve of racing engine, and it is a tubular member, and its hollow breathing pipe chamber is streamlined tube chamber.

The breather line that the arc surface sidewall that described streamlined tube chamber is a pair of opposing is limited.

After adopting such scheme, because hollow ventilation tube chamber of the present utility model is streamlined tube chamber, internal diameter is a progressive formation, reduce the air inlet sudden change, stablize the air inlet effect, flow-limiting valve is all passed through in all air inlets of assurance motor, and do not change the regulation of its maximum inner diameter value of SAE laws of the game 20mm, fairshaped gas makes the oil atomizing effect obtain maximum improvement by part, increases the intake efficiency that enters motor simultaneously, finally improves engine power performance and emission performance.

Description of drawings

Figure 1A is a structural drawing of commonly using the racing engine gas handling system;

Figure 1B is a sectional view of commonly using flow-limiting valve;

Fig. 2 is a front view of the present utility model;

Fig. 3 is a sectional view of the present utility model;

Fig. 4 is a plan view of the present utility model;

Fig. 5 is an axonometric drawing of the present utility model;

Fig. 6 is that the utility model is installed in racing engine air intake system structure figure.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is further described.

As shown in Figure 6, the utility model is a kind of improvement structure of flow-limiting valve of racing engine, it is parts in the racing engine gas handling system, and engine aspirating system comprises air-strainer 1, resonant cavity 2, bend pipe 3, throttle valve body 4, flow-limiting valve 5, injection valve 6 and motor rubber pipe 7.

As Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, flow-limiting valve 5 described in the utility model is a tubular member, its hollow breathing pipe chamber 51 is streamlined tube chamber, internal diameter is a progressive formation, and the shape of this streamlined tube chamber 51 can be that longitudinal profile is the breather line that the arc surface sidewall of pair of opposing is limited.

Installation of the present utility model:

Flow-limiting valve needs suitably on length, should rubber pipe Design of length flow-limiting valve 5 length be installed according to throttle valve body 4.Throttle valve body 4 partial-lengths are stretched in control simultaneously, make the reasonable gradual change of whole flow-limiting valve 5 interior flow fields.And installing, the utility model is embedded flow-limiting valve 5, flow-limiting valve 5 external diameters are installed rubber pipe with throttle valve body 4 and throttle valve body 4 and are cooperated, and are Spielpassung.Standing part is the collar 8 of thickness 1mm simultaneously.After it installed and fixed, throttle valve body 4 withstood vertically, and motor rubber pipe 7 is outside with clip 8 chuckings.

Emphasis of the present utility model just is: the flow-limiting valve interior lumen is a streamlined structure.

The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented with this, i.e. the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.

Claims

1. the improvement structure of the flow-limiting valve of a racing engine, it is a tubular member; It is characterized in that: its hollow breathing pipe chamber is streamlined tube chamber.

2. the improvement structure of the flow-limiting valve of racing engine according to claim 1 is characterized in that: the breather line that the arc surface sidewall that described streamlined tube chamber is a pair of opposing is limited.