Developments on the medium-speed side have concentrated on further emission reductions.<\/p>\n
The need to modify products to meet the IMO?s NOx limit and the pre-certification process has kept the medium-speed engine manufacturers busy over the last year or so. Emission reduction remains the centrepiece of many R&D efforts, so new products have been few and far between and look likely to stay that way. By far the biggest launch has been the MAN B&W 27\/38 in both genset and propulsion versions (The Motor Ship, October 1999) but others have plans too.<\/p>\n
Belgian engine manufacturer ABC plans to boost exports to Germany and eastern Europe with more powerful V12 and V16 additions to its existing DZC engine range. With a bore of 256mm and a stroke of 310mm, the current in-line six and eight cylinder versions have outputs from 864kW (1,175 bhp) at 720 rev\/min to 1,768kW (2,404 bhp) at 1,000 rev\/min ? the vee engines will see this almost doubled.<\/p>\n
The new engines will retain the distinctive push rod tubes on the outside of the vee, and will also keep the segmented camshafts. Twin turbo-chargers (one per bank) will push air through the four valve heads to give a bmep of 18.1 bar and a pmax of 114 bar. Mechanical fuel injection will be retained and TBO are expected to start at around 15,000 hrs.<\/p>\n
Wartsila NSD has seen its first 64 engine at sea, and it is also the first seven cylinder medium-speed engine produced by the company. The introduction of the W64 opens up fresh areas for medium-speed propulsion and the company feels the four strokes will gain market share and move outside specialist tonnage.<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
Developments on the medium-speed side have concentrated on further emission reductions. The need to modify products to meet the IMO?s NOx limit and the pre-certification process has kept the medium-speed engine manufacturers busy over the last year or so. Emission reduction remains the centrepiece of many R&D efforts, so new products have been few and […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7],"tags":[],"sponsor":[],"class_list":["post-1944","post","type-post","status-publish","format-standard","hentry","category-general-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.motorship.com\/propulsion-and-future-fuels-conference\/wp-json\/wp\/v2\/posts\/1944","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.motorship.com\/propulsion-and-future-fuels-conference\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.motorship.com\/propulsion-and-future-fuels-conference\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.motorship.com\/propulsion-and-future-fuels-conference\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.motorship.com\/propulsion-and-future-fuels-conference\/wp-json\/wp\/v2\/comments?post=1944"}],"version-history":[{"count":0,"href":"https:\/\/www.motorship.com\/propulsion-and-future-fuels-conference\/wp-json\/wp\/v2\/posts\/1944\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.motorship.com\/propulsion-and-future-fuels-conference\/wp-json\/wp\/v2\/media?parent=1944"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.motorship.com\/propulsion-and-future-fuels-conference\/wp-json\/wp\/v2\/categories?post=1944"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.motorship.com\/propulsion-and-future-fuels-conference\/wp-json\/wp\/v2\/tags?post=1944"},{"taxonomy":"sponsor","embeddable":true,"href":"https:\/\/www.motorship.com\/propulsion-and-future-fuels-conference\/wp-json\/wp\/v2\/sponsor?post=1944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}