Industrial Lubrication and Tribology

doi: 10.1108/eb053144pmid: N/A

THE present generation of automotive diesel engines is designed with parent cylinder bores, or liners, requiring bore sizing after initial fitment. At overhaul this permits reboring and fitment of oversize pistons. A cylinder surface finish controlled to 2540 micro inch CLA with a cross hatch angle of 120 is then required to give optimum conditions for ring bedding, vital for gas seal and oil control. Fig 1 shows the correct cross hatch angle.

doi: 10.1108/eb053145pmid: N/A

A new single system process for separating oil from water, with distinct advantages over other currently available systems, has been introduced by the Pollution Control Systems organization of ICI.

doi: 10.1108/eb053146pmid: N/A

THE leakfree sealing of valves and pumps lasting several years, with packing life limited only by that of the equipment components, is the claim of the Union Carbide Corporation for their Grafoil products. In dryrun conditions without lubrication and regardless of pressure, and temperature, Grafoil, free of abrasive particles, is selflubricating it does not score valve stems, so that there is no stem corrosion within the packing area.

doi: 10.1108/eb053147pmid: N/A

SYNOPSIS DURING the last ten years or more an outwardly unnoticeable change has been taking place on board a variety of ships, in that the traditional method of heating cargo, engine room services and accommodation by steam, has been replaced by a thermal fluid which remains in the liquid phase throughout the entire heating system.