## Input data list of applied software DIESEL-2/4t |

**GAS EXCHANGE SYSTEM**

EXHAUST PORTS

- Angle of the exhaust BEGINNING [deg. before BDC].
- Angle of the exhaust ENDING [deg. after TDC].

*Longitudinal section of the exhaust port *

Fig. 2

Diameter for calculation of the cross sectional area.*dk -*Perimeter of cross section.*Pk -*Length of the exhaust channel.*lk -*- Number of exhaust valves per cylinder.

Results of the static blow off testing of
exhaust ports (the effective area **m*** f*
as a function of the crank angle ). Specify only site of rise.

Specify a function similar to shown in above figure if the valve downwards motion differs from a site of rise.

INTAKE PORTS

- Angle of the intake BEGINNING (deg. before TDC)
- Angle of the intake ENDING (deg. after BDC)
*Longitudinal section of an intake port (like fig.2)*

Diameter for calculation of the cross sectional area.*dk -*Perimeter of cross section.*Pk -*Length of the exhaust channel.*lk -*- Number of exhaust valves per cylinder.

Results of the static blow off testing of exhaust ports
(the effective area * mf* as a
function of the crank angle ). Specify only site of rise.

Specify a function similar to shown in above figure if the valve downwards motion differs from a site of rise.

INLET MANIFOLD

- Diameter of the pipe carrying air to the inlet manifold.
- Number of cylinders with one common manifold.
- Diameter of the manifold.
- Length of the manifold.
- Perimeter of cross section of the manifold.

EXHAUST MANIFOLD

- Length of the manifold.
- Diameter of the manifold.
- Number of cylinders with one common manifold.
The exhaust manifold can have special fire-prevention system of cooling (Fig. 2), including the thermal pipe (1), the air layer (3) between the thermal pipe and the wall of the manifold (2). The manifold can be cooled by water (4). Calculation of this system can be carried out by the program.

- Temperature of material cooling the manifold (air: < 330 K, water: > 330 Ê).
- Existence of a thermal pipe (1) in the exhaust manifold (Fig. 2.):

- thickness of the thermal pipe wall;

- thickness of the air layer (3) between the thermal pipe and manifold wall (Fig. 2.);

- thermal conductivity of the material of a thermal pipe;

- relative area of contact of the thermal pipe with the exhaust manifold in the fastening places. - Diameter of a tail pipe in section located after the union of manifolds (only for an engine without the turbine).

*The type of connection of exhaust manifolds*

1) one manifold is connected to one turbine (for the engine without the turbine - connected to one tail pipe); | 2)- each manifold is connected to an individual inlet of turbine; | ||

3) - two manifolds are united in front of the turbine (for the engine without the turbine - united before the tail pipe); | 4)- two manifolds are united along whole length of the turbine scroll duct and are separated by a blade. |

- Amount of manifolds connected to one turbine.