Introduction Dual Fuel Control System of MAN B&W ME-GI Engines This paper outlines the principles of the Dual Fuel Control System developed by MAN Diesel & Turbo SE. The Dual Fuel Control System is designed to control dual fuel operation on compressed gaseous or liquefied fuels of MAN B&W engines utilizing the mechatronic high- pressure gas injection system.

This paper is intended to form part of the basis for design approval by the Classification Societies of the Dual Fuel Control System.

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3092815 - 7

Title

Dual Fuel Operation Page no.

2 (28)

Date Des. Chk. Appd. A. C. Change/replacement C. no.

2011-03-16 JAB JAB ER Document transferred to template. 0

Table of contents

1. ABBREVIATIONS 3

2. GENERAL DESCRIPTION OF THE HIGH PRESSURE GAS INJECTION

SYSTEM 5

2.1 HIGH PRESSURE GAS INJECTION PRINCIPLE 5

2.2 DESIGN CRITERIA AND CONCEPT OF THE GAS SYSTEM 6

2.3 THE DESIGN OF THE DUAL FUEL ENGINE 8

3. DUAL FUEL CONTROL SYSTEM DESIGN 10

3.1 MAIN TASKS AND ARCHITECTURE OF THE DUAL FUEL CONTROL SYSTEM 10

3.2 OPERATOR INTERFACE 11

3.3 GAS PLANT CONTROL 12

3.4 DUAL FUEL INJECTION CONTROL 18

3.5 SAFETY SYSTEM 19

4. PORT TO PORT OPERATION ON GAS 23

Info no. Sub category Ident. no.

3092815 - 7

Title

Dual Fuel Operation Page no.

3 (28)

Date Des. Chk. Appd. A. C. Change/replacement C. no.

2011-03-16 JAB JAB ER Document transferred to template. 0

1. References

Ref.1:  Process and Instrumentation diagram: drawing 0787402-6

Nomenclature for Process and Instrumentation diagram: Gas Train (double block and bleed valves)

V1: Safety: Main Gas Valve

V2: Gas Bleed Valve

V7: Plant: Man Gas Valve Gas Block

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