Valve Train Halves Idle to Full Load Time

Posted by George Backwell
Tuesday, February 25, 2014

One of the  new tools that engine builders are using these days to reduce fuel consumption and greenhouse gas emissions is Valve Control Management (VCM), ABB’s variable valve train system, more so since duel-fuel engines become an increasingly popular choice by shipowners.
Initially introduced in the shore-based gas plant sector, Christoph Rofka, Senior General Manager for New Business at ABB conjectured at that time and with an eye to the future:  “A technology like this speaks to the increasing trend to explore dual-fuel options and create solutions for gas. These engines are also very similar to what you find on many ships, and we believe that VCM will very soon be highly relevant for and effective in the marine industry.”
Basically the technology helps a turbocharger to manage air actively and is particularly effective for high-performance engines in which large operating ranges or rapid load responses are required such as tugboats, icebreakers, pump drives, compressor drives and power generators.
The manufacturers explain that generally, most valve train systems must be set for a particular engine load and they are matched to a particular operating condition, consequently they cannot switch flexibly from one load to another and so compromise on fully leveraging the engine’s full potential. Running an engine with this type of valve train system at a load other than what it was originally set to results in lower efficiency, smoke, and greater thermal load on the engine.
To ameliorate, VCM was specifically designed as an intelligent valve train system that responds adaptively to change the timing in an engine’s valves so that it always receives an ideal amount of air. This technology thus manages transient behaviour, i.e. changes in engine speed, load or both, so that engines can accelerate more rapidly from one load point to another. VCM optimizes the configuration of the engine for every load, allowing the engine to work as efficiently as possible. A turbocharging solution equipped with VCM can take an engine that is idling to full load in half the time that it normally takes, in some cases even more quickly.

Posted by George Backwell @ www.maritimepropulsion.com

(As published in the February 2014 edition of Maritime Reporter & Engineering News - www.marinelink.com)
 

Maritime Reporter March 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Shipbuilding

Norwegian Car Carriers to Buy Two from Hyundai Samho

Oslo-listed Norwegian Car Carriers (NOCC) has signed a contract with Hyundai Samho Heavy Industries for the construction of two 6500 ceu Pure Car Truck Carrier (OCTCs).

Boatbuilding in China

While much of the focus on coverage of the Chinese shipbuilding industry is on big shipbuilding, Maritime Reporter switches gears this month to explore activities in select boatbuilding sectors.

HMS Prince of Wales Bridge Sets Sail

The bridge section of the second Queen Elizabeth Class aircraft carrier set sail today from Glasgow on its first sea voyage to Rosyth.   Upper Block 07 is where

Environmental

IMO Calls for Environmentally Sound Ship Recycling in Bangladesh

The  International Maritime Organization (IMO) and the government of the People’s Republic of Bangladesh are jointly implementing a project entitled “Safe and

BIMCO Welcomes EU Decision on Migrants

BIMCO has stated today that it appreciates the new efforts by EU leaders to reduce increasing reliance on merchant shipping to rescue the growing numbers of

Long Beach, Los Angeles ports host forum to gather input

More than 100 cargo owners, trucking firm leaders, longshore labor, marine terminals and other goods movement industry representatives turned out Wednesday for

Marine Power

Falklands' Oil Drilling at Isobel Deep Suspended

Oil explorers drilling in the waters north of the Falkland Islands have suspended work on the second well of their 2015 current six-well drilling campaign after a technical problem.

Incat Crowther Designs Commercial Security Vessel

Incat Crowther has received a contract to design an offshore commercial oilfield security vessel for Veecraft Marine and its client, UTM Dredging Ltd, the designer announced today.

SCHOTTEL to Present Inland Offerings

SCHOTTEL will present its expertise to the U.S. inland market at the upcoming Inland Marine Expo in St Louis, June 15-17, 2015: strong push boats in Brazil, big

News

Goliat FPSO in Norway

The Goliat FPSO was successfully floated off the heavy-lift vessel, Dockwise Vanguard, in the fjord outside Hammerfest, says Eni Norge    The Goliat platform has arrived in Hammerfest,

BIMCO Welcomes EU Decision on Migrants

BIMCO has stated today that it appreciates the new efforts by EU leaders to reduce increasing reliance on merchant shipping to rescue the growing numbers of

Long Beach, Los Angeles ports host forum to gather input

More than 100 cargo owners, trucking firm leaders, longshore labor, marine terminals and other goods movement industry representatives turned out Wednesday for

Marine Equipment

Apply Now for the MN 100

The August 2015 edition of Marine News, the leading voice in the North American workboat market, will feature 100 leaders and innovators, including workboat owners and operators,

MMT Presents Surveyor Interceptor ROV (SROV)

At Ocean Business in Southampton  MMT´s key topic was the new Surveyor Interceptor ROV (SROV). Together with its Norwegian partners Reach Subsea AS, MMT developed a new generation,

Incat Crowther Designs Commercial Security Vessel

Incat Crowther has received a contract to design an offshore commercial oilfield security vessel for Veecraft Marine and its client, UTM Dredging Ltd, the designer announced today.

 
 
Maritime Security Naval Architecture Navigation Pipelines Port Authority Salvage Ship Repair Ship Simulators Sonar Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.3274 sec (3 req/sec)