Skibsmotorer reducerer brændselsforbrugetCarsten B. Poulsen

MAN Diesel & Turbo� „Engineering the Future – since 1758.“

Carsten B. Poulsen

Methodology Research Engineer

Marine Low Speed, Research & Development

Engines & Marine Systems

Turbomachinery Power Plants After Sales

Product Range by Strategic Business Unit

50% is powered by MAN Diesel & Turbo Engines!

Areas of ActivityMAN Diesel & Turbo in World Trade

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World Trade fleet is 53.000 vessels

•Better fuel economy•Reduced maintenance•Remote management•Reduced crew•Improved reliability•Environment compliance

Challenge:

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Areas of activityDiesel Engine range from 450 kW to 87,000 kW

Fuel EconomyWhat is 170g/kWh?

15km/l → 20km/l extra-urban

Marine engine efficiency is HIGH!

1g/kWh ~ DKK3000/24hrs

17km/l → 17.1km/l

Mercedes CDIMAN B&W K98

50km/l extra-urbanSpecific Fuel Consumption (SFC): 170g/kWh

Control objects:

•Charge Pressure/Air Density

•Fuel Injection Profile

•Exhaust Gas Recirculation

•Hydraulic Pressure

•Environmental Legislation

•Engine Balance

•etc.

Add Electronics and Software

The Change ProcessThe process vs. workflow?

EventEvent

The Change Workflow(s)The process vs. workflow?

The Change Process tool support

Rational Change (Change Request)

Rational Change (Work Package)

Rational DOORS (Specfications)

Rational Synergy(Artefacts)

Achievements

•Single Change Req. repository•Better collaboration•Improved perspective•Continuous development•SFC still to be determined

Gained ExperiencesProcesses?

Distinguish between

Processes and Workflows

There is no workflow related

distinction between enhancements

and defects

Even important

activities may be

formal or informal

The Process

determines important

activities

All events are

managed equally by

the process

Verification phaseResolution phase

Assignment phase

Analysis phaseInitial phase

1. Document the change

proposal or defect in a CR

2. Analyse the impact of

implementing the CR

3. Accept or reject the CR

4. Schedule selected CRs for

a defined release

5. Review the selection of

scheduled CRs with relevant

stakeholders

6. Verify the implementation

of the CRs

7. Close the CRs

Implement the selection of

CRs as scheduled

Architectural design

Implementation design

Implementation

Integration

Testing

Releasing

Requirements specification

Functional design

Investigation

Feasibility

Development process

Synergy Task concept rules

Keep workflows as simple as

possible

?Questions?