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Introduction of the exhaust pipe 1
type exhaust pipe design
Drum S: lifting low speed torque, fast start. Climbing strong. Voice low, at around 90 decibels without sacrificing horsepower high speed, to extend the main form of waste to achieve power Promotion. (Disadvantages: acoustic resonance at high speeds, high speed is not much improvement horsepower), S 2.0 or less for a drum displacement engine. Internal back pressure: According to the characteristics of the specific design of the car itself. Enhance low speed torque, the sound is not noisy. No acoustic resonance. No acoustic resonance at high speed, and fast speed. (S drum sounds and similar, some models can not be installed S drum, can only be installed within the back pressure.)
G type: 2.0 or more for large displacement engines, by three back-pressure to reduce the sound effect , extending the form of airflow. S with similar drum. Sound xiex around 90 decibels. Lifting torque low speed (S drums for small cars .G 2.0 or less 2.0 or more drums for large displacement of the car)
colinear: lifting horsepower high speed, low speed torque no much improved. More suitable for long runs and high-speed race track. Sound about 100 decibels. More noisy.
Y type: lifting low speed torque. Sound noisy. About 95 db
Drum Street: lifting horsepower and torque, the sound quality is quite particular about the shell and completely in order to increase the horsepower and decrease the volume of the set, the line can select any street high-speed travel, the whole row the most popular gas used in Japan gradually enlarged design models, 47mm-63mm-76mm, and the connection between 76mm by 63mm back-pressure pipe, it can bring the potential of the engine, a sound of about 90 db, the fuel to accelerate the reaction equilibrium, force upgrade, Street drum became the ideal of the throat to walk the streets (Street drum looks good, grilled black, the car performance is very good,)
M drum: variable back pressure design, based on speed to adjust the size of the high and low back pressure, there is no acoustic resonance at high speed when the low speed ,, the engine,Gas flow rate is slow, the speed will slow down control valve, generating a vacuum suction force is small is small, the exhaust gas per unit time stored on the large back pressure. When the engine at high speed, the gas flow speed is fast, the speed control valve will become faster, a large vacuum exhaust excluded, high speed exhaust gas smoothly. To achieve the lifting torque but also to enhance the effect of horsepower, (full-speed power) high speed about 85 decibels, according to foreign design concept is currently the show in the most obvious and exhaust pipe to enhance the power, and the change in the 2500-3000 time the voice on the issue came, again in 4000, when the voice was quiet down.
HKS type: straight row of back pressure, improve low speed high torque and horsepower speed. Sound than the straight rows of small, pressure is larger than the back, more crisp, at 95 db never intrusive. No acoustic resonance at high speed. (Japan has the effect of HKS) design principle: the air flow along the wall towards. Middle: connectors for power and tail section, for the same horsepower to enhance the role of horses 3-4.
about the design of the vehicle exhaust pipe angle
angle of the exhaust pipe vehicle emissions has been difficult to solve specialized factory. By survey, home angular direction cars and light automotive exhaust pipe is generally parallel to the ground rearwardly of the high-power vehicles and agricultural vehicles off the exhaust duct angle to the ground. From an environmental point of view, according to the prevailing vehicle exhaust and exhaust duct angular direction mechanical design principles have not discharge a predetermined angle to a new design approach. The best design of all vehicle emissions exhaust angular direction should be parallel to the ground after the vehicle 180 for discharge, if the design is not standardized, in the manufacturers free to design the exhaust gas discharge pipe would be detrimental to the environment and may occur while driving accidental violations.
1, the exhaust duct 45 degrees off angle formed disadvantage to the ground.
within the angular range of such emissions, the car is running, blowing the dust on the ground will be a high flow rate exhaust, while driving faster, the degree of contamination of dust which will be greater. Meanwhile, the more powerful the car, gas flow rate and flow velocity greater emissions, dust pollution levels it will be higher. According to market research, the most serious dust pollution areas should be lots along the road, the more traffic, the more serious dust. On the other hand, dust pollution and cleanness of the surfaces in the road, the publicThe more the greater the amount of surface dust Lu Di car exhaust blowing dust.
2, the angle of emission conduit presence off to both sides of car has some problems.
If the angle of emission conduit off both sides of the car, then the automobile exhaust gas stream will cause thermal shock resistance pedestrian injury during driving. In addition, the atomized grease containing the first place burned in automobile exhaust, which includes carbides and sulfides and other pollutants harmful to human cause personal infringing behavior.
3, the angle of emission pipe upward off due to the severity of the damage when the vehicle body will.
off to such an angle, vehicle manufacturers generally do not choose. Because the exhaust sulfides, carbides and other pollutants have a metal such as automobile body parts produced chemical corrosion, so manufacturers generally do not select this exhaust emission angle.
in accordance with the relevant provisions of the Environmental Protection Law of China, the machinery industry management departments of various provinces and cities should develop a unified fuel vehicle exhaust pipe angle bends to the standard, it is best discharged back parallel to the ground. And implement strictly prohibited exhaust pipe bend to the ground and both sides of the design to reduce dust pollution generated by motor vehicles while driving and increase the operation and management mechanism of environmental regulations, to make our skies more clear environment even better. An exhaust pipe