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Fuel Injection Rail Example Quick Connector Example

Fluid analysis is a technology used to analyze how liquid or gas flows through an object by displaying the velocity and the quantity of the flow.
Sanoh is able to optimally and quickly perform design by analyzing the difference in the ventilation resistance (the ease of liquid or gas flow) and in the pressure drop (the loss or reduction of pressure) of objects with different capacities or shapes.

• Fluid Analysis Example 1 : Fuel Injection Rail (FIR)
- A study of ventilation resistance and pressure reduction for objects with different shapes

* FIR is a device that uniformly supplies fuel to automobile engine fuel injectors.

> To FIR page

L-shape Type

Square-shape Type

* Special plug-in software is required.

This is an example of the comparative analysis of an L-shape FIR and a square-shape FIR, whose shapes and capacities are different.
Seeking a way to reduce emission gas and improve the efficiency of fuel distribution inside the FIR to the injectors, changes in the fuel flow velocity and pressure, and flow directions were analyzed.

The small arrows in the figure indicate the fuel velocity and direction in the FIR when the engine starts.
This analysis confirmed that there are two systems of fuel flow inside the L-shape FIR; one that runs above the injection cups and another that runs through the downward protruding portion of the FIR.
It was also confirmed that the protruded portion has a surge tank effect (absorption effect of the fuel pulsation).
In addition, it was discovered that the flow velocity inside the L-shape FIR is slower than that of the square-shape FIR. That means that the L-shape FIR helps to reduce fuel pressure fluctuation. In other words, it reduces emission gas.

• Fluid Analysis Example 2 : Quick Connector
- A study of ventilation resistance and pressure drop of objects with different shapes

* A quick connector is a product used to connect tubes. It utilizes a simple one-touch connection and easy mounting/dismounting without the need for additional tools.

> To Quick Connector page

Before the shape change

After the shape change

* Special plug-in software is required.

This is an example of analyzing whether there are any problems with the flow through the quick connector if the shape is changed.
The distribution of flow velocity and pressure, and flow direction were analyzed both before and after the shape change.

The small arrows in the figure indicate the fluid velocity and direction in the quick connector.
These figures show that there is no change in flow velocity on the outlet side even after the shape change. Therefore, there is no problem in changing the shape.