Abstract
In the present, the automobile is the popular tool in every family. In the DI diesel engine, about the intake system that this system can af-fect properties of the engine, such as change the air flow velocity and pressure into cylinders, and among the air through the pump or throttle body(throttle valve), the throttle body can make air to produce eddies and change the air flow pressure, because when air into cylinder, the air pressure is an important parameter, so the time of the throttle valve opening in very important(also say the angle of opening), we know the surface of the cylinder can affect the air and fuel mixing rate, so we have investigated the effect of different surface shape. Found the different surface can improve the engine combustion properties. In this article, we will combine the throttle valve and the different surface shapes of the cylinder, make a survey what find the effect of this combination at the constant revolutions per minute(RPM). We will set the velocity at 1000rpm by tentative and investigate the position of the piston at the same location(inhale status) when premix air and fuel into the cylinder.
Highlights
In the present, the automobile is popular traffic tool in every family, and every driver wants to use the least cost for the cars, so let the more and more researchers investigate the automobile
In the DI diesel engine, about the intake system that this system can affect properties of the engine, such as change the air flow velocity and pressure into cylinders, and among the air through the pump or throttle body(throttle valve), the throttle body can make air to produce eddies and change the air flow pressure, because when air into cylinder, the air pressure is an important parameter, so the time of the throttle valve opening in very important( say the angle of opening), we know the surface of the cylinder can affect the air and fuel mixing rate, so we have investigated the effect of different surface shape
Use the ANSYS program to analyze the model of engine intake system and cylinder piston surface geometry, through the air flow mass into the pump of nearby the geometry, throttle body and make air through the throttle valve under with change the valve
Summary
The automobile is popular traffic tool in every family, and every driver wants to use the least cost for the cars, so let the more and more researchers investigate the automobile. The incylinder air motion, fuel injection timing, pressure and bowl dimensions are some of the important parameters that govern the performance and emission characteristics and the consequence of the combustion in the internal combustion engines[11]. Such as how to make the noise least come out the car, and how to make drivers in the car feel comfortable. Find the location of the throttle valve opening and the piston surface shape Because this is important parts for improving property about the engine, air–fuel first time into cylinder need to premix, only the premix get a good blend, can get the complete combustion later(compression stroke)
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