zxc ® 07-Oct-2012 20:04

User's Guide PMI System (On-line) Pressure Analyser Version 2.0


Year: 2001
Language: english
Author: MAN B&W Diesel A/S
Genre: MANUAL
Publisher: MAN B&W Diesel A/S
Format: PDF
Quality: OCR without errors
Number of pages: >100
Description: This User's Guide applies to the MAN B&W Diesel's On-line PMI System, Version 2.0. It provides an introduction to and an overview of the entire PMI System for cylinder pressure measurements and analysis on MAN B&W diesel engines on board ship and at stationary power plants.
The guide sets out to provide engine staff with the knowledge essential for understanding the principle of operation and function of the PMI System, so that they can more quickly begin using it for measurements.
Note: For first time use of the PMI System, it is essential that it is correctly setup as explained in Chapter 4 of this User Guide.
Copyright © 2001, MAN B&W Diesel A/S All rights reserved. No part of this publication may be reproduced or distributed
in any form or by any means, without prior consent in writing from MAN B&W Diesel.
Before You Begin
Welcome to MAN B&W Diesel's PMI System for on-line cylinder pressure measurements on diesel engines.
The PMI System is designed to provide engineers and service personnel onboard ship and at power plants with a computerised tool for pressure measurements and analysis on two-stroke diesel engines. The main advantages
of the system are:
• On-line measurement of cylinder pressure. Fully automated measurement
routine for measurements conducted from engine control room.
• Graphic display and print out of PT, PV and Balance Diagrams, together
with Mean Indicated Pressure and Max. Pressure deviation limits.
• Calculated values of Effective Power, Mean Indicated Pressure pi,
Compression Pressure pcomp, Max. Pressure pmax, and Scavenge Pressure
pscav, including proposed values for index adjustments, etc.
• Software interface for use with MAN B&W Diesel's engine performance
and engine diagnostics software, e.g. CoCoS-EDS.

About this User’s Guide

About this User’s Guide
This User’s Guide is especially prepared to give you and other users the knowledge essential to understanding the operation of the PMI System, so that you can more quickly master the system when you begin using it.
The guide includes the following chapters:
Chapter 1 – Before You Begin: This is the chapter which you are now reading. It provides brief details about the contents
of this Guide and how to obtain on-line help on your PC.
In addition, it includes a short description of the system and its main components.
Chapter 2 – Exploring the PMI System: This deals with basic operation of the system. It explains what you need to know in
order to start using the system.
Chapter 3 – Manual Measurements: This chapter explains how to make manual measurements with the system, save and
edit measurements, as well as create backups of the measurement
database.
Chapter 4 – System Setup & Calibration: This explains how to use the PMI Setup program for setting up engine and measurement parameters, checking communication and calibrating the system with the engine.
Chapter 5 – PMI System Menus & Commands: This provides a simplified overview of the commands available with the
windows menus of the PMI System.
Appendix – This includes a technical specification and system requirements for using a PC, plus information about taking
care of the equipment and obtaining technical assistance.
Glossary – This explains many of the terms and abbreviations used throughout this guide

Table of Contents

1. Before You Begin
1.1 About this User’s Guide.............................................................................1-2
General Overview ......................................................................................1-2
PMI 'On-line Help' .....................................................................................1-3
Text Conventions .......................................................................................1-3
1.2 The Basic System.......................................................................................1-3
1.3 Main Features.............................................................................................1-7
Pressure Measurement Views ....................................................................1-7
Calculated Values ......................................................................................1-8
Determination of TDC ...............................................................................1-9
Crankshaft Torsion Correction...................................................................1-9
Cylinder Identification .............................................................................1-10
1.4 Supplementary Features...........................................................................1-10
Standard PC Hardware.............................................................................1-10
Windows Display & Operation................................................................1-10
On-line Help.............................................................................................1-11
Data Backup.............................................................................................1-11
Use with Other Software..........................................................................1-11
2. Exploring the PMI System
2.1 The PMI Windows Environment ...............................................................2-2
Starting the 'PMI On-line Analyser' Program ...........................................2-2
Main Window ...........................................................................................2-2
On-line PMI System MAN B&W Diesel A/S
0 -2 Version 2.0 1142970 - 2.0
Table of Contents
PMI Communication Monitor....................................................................2-4
Mouse/keyboard Operation........................................................................2-5
2.2 Opening Engines ........................................................................................2-6
2.3 Monitoring & Viewing On-line Values ...................................................2-7
2.4 Capturing and Storing On-line Values ....................................................2-8
2.5 Viewing Stored Measurements ................................................................2-10
Opening Stored Measurements ..............................................................2-10
PT Diagrams ...........................................................................................2-11
PV Diagrams ..........................................................................................2-15
Balance Plots ..........................................................................................2-16
Calculated Values ..................................................................................2-17
3. Manual Measurements
3.1 Manual Measurements ...............................................................................3-2
3.2 Checking & Editing Measurements ...........................................................3-5
3.3 Deleting Measurements .............................................................................3-9
3.4 Backing Up & Restoring the PMI Database ..............................................3-9
4. System Setup & Calibration
4.1 Initial Setup ................................................................................................4-2
4.2 System Default Measurements...................................................................4-9
'0-Diagram' Measurements.........................................................................4-9
E-Load and Transducer/Sensor Measurements........................................4-12
4.3 Checking, Editing & Downloading Calibration Measurements ..............4-12
4.4 Sensor Replacement.................................................................................4-18
4.5 Calibration Transducer Replacement.......................................................4-20
MAN B&W Diesel A/S On-line PMI System
1142970 - 2.0 Version 2.0 0 -3
Table of Contents
5. PMI System Menus & Commands
5.1 PMI On-line Analyser................................................................................5-2
File Menu ...................................................................................................5-2
View Menu ..............................................................................................5-3
Tools Menu ................................................................................................5-3
Help .......................................................................................................5-4
5.2 PMI On-line Setup .....................................................................................5-6
File Menu ...................................................................................................5-6
Setup .......................................................................................................5-6
Communication..........................................................................................5-7
Help .......................................................................................................5-8
Appendix
A.1 Technical Specification............................................................................ A-2
On-line PMI System................................................................................. A-2
Computer Requirements .......................................................................... A-2
A.2 Care & Handling of PMI Equipment ....................................................... A-3
A.3 Technical Assistance................................................................................ A-5
Glossary
Index

PMI

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