Downloads

On this page you will find a number of downloads for the heat release program umhr. Currently two sample engines are given, a Spark Ignition and a Compression Ignition (Diesel) engine.

Description

Version

 File
Blank Input File
These are all of the parameters needed in order to run the program. You might want to open this file and then print it out to make the collection of data easier.

1.2

Sample Input File for a Spark Ignition Engine
Tab-delimited (CA [°] P[Pa])
Crank-Angle (CA) resolution: 1°
Number of data points: 213
Intake Valve Closing (IVC): -103°
Exhaust Valve Opening (EVO): 101°
Port-Fuel Injected
1.2

Sample Input File for a Compression Ignition (Diesel) Engine
Tab-delimited (CA [°] P[Pa])
Crank-Angle (CA) resolution: 1/4°
Number of data points: 2880
Intake Valve Closing (IVC): 135°
Exhaust Valve Opening (EVO): 484°
Port-Fuel Injected
1.2
Sample umhr Graphical User Interface Input Files
Spark Ignition
Compression Ignition

1.2
1.2
Sample umhr Output Files
Spark Ignition
Compression Ignition

1.2
1.2
Input and Output Parameters for FORTRAN Source
Integer parameters
Double Precision parameters

1.2
1.2
Graphing Component Help File
Unfortunately, the installation program used for the GUI does not properly load the help file for the graphing component. However, you can download that file here (Double-click on this file to start the help feature).
  

† Yes, it is a direct-injection diesel engine, however version 1.2 of umhr does not account for variable mass input. Therefore, all fuel mass is assumed to enter the cylinder during the intake event (closed mass assumption). Version 1.3 will allow for a fuel injection profile to be entered by the user.

Unless otherwise expressly stated, all original material of whatever nature created by Dr. Christopher D. Depcik () and included in this website and any related pages is licensed under a .
Creative Commons License
Date Created: 05/28/2003
Date Revised: 10/11/2005