Diesel move near on higher coolants
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DIESEL ENGINES operating with higher coolant temperatures are likely in the near future according to the Paramins division of Esso.
Such power units will operate without fan or water pump using a convection cooling system according to Roger Haycock, manager — European market technical developments at Paramins.
Speaking at a Paramins presentation on automotive trends Mr Haycock suggested that the trend towards turbocharging and the increased use of inlet charge cooling would continue.
The greater potential efficiency of the adiabatic engine was mentioned along with the secondary benefits of less fuel sensitivity and less maintenance.
As one or more of the advan tages of the adiabatic engine is introduced there is likely to be a steady increase in diesel temperatures with the result that a solid lubricant will probably be necessary instead of a conventional oil.
According to Mr Haycock, a special lubricant would also be required if spark ignition engines were to run on 100 per cent methanol.
However, Mr Haycock thought it unlikely that large amounts of methanol would be coming to Europe and if a mixture of, say, 15 per cent of methanol were to be used then the special lubricant requirement would not apply.