AT THE HEART OF THE ROAD TRANSPORT INDUSTRY.

Call our Sales Team on 0208 912 2120

As part of our ,safety training we are ' thinking

21st March 1969, Page 67
21st March 1969
Page 67
Page 67, 21st March 1969 — As part of our ,safety training we are ' thinking
Close
Noticed an error?
If you've noticed an error in this article please click here to report it so we can fix it.

Which of the following most accurately describes the problem?

of including fire protection; you know of any specialist courses ch might be available in this field?

The Fire Protection Association, Aldermary House, Queen Street, London EC4, le body which is chiefly responsible for subject, though the local fire services nally have an officer well equipped to advice, The FPA tells us that it will be ling at least two residential courses on protection this year, though since these last five days and are largely intended for ialists you may think they are too exAre for what you had in mind. The first -se, from May 5 to 9, is intended to cater young management trainees needing a iprehensive picture of modern fire prelion practise, as well as appealing to works iagement and professional safety officers. second course, from September 29 to ober 3, is more advanced and is intended ire engineering specialists.

What effect does the octane rating of a petroleum spirit have on the perforice of a petrol engine and why does an me -pink" when unsuitable petrol is Dealing with the second part of this question before discussing octane rating, thing" is another name for detonation or ignition. When the combustible mixture the cylinder has been ignited by the :king plug, the flame front travels across combustion chamber and compresses it is normally called the "end gas" before 3 ignited by the flame. If the gas is 'pressed sufficiently by the advancing he front the resultant rise in temperature cause self-ignition. In this case all the gas las distinct from all the combustible ure in the chamberl burns instantaneously. causes the pressure to increase at a high rate and has the effect of a light mer blow. If all the mixture detonated force of the explosion would probably 3uch that the engine would disintegrate. 'hen the mixture burns progressively as the e advances across the chamber the rate pressure rise is also progressive. )nation can be destructive if it continues any length of time and in any case esents a wastage of power because the of pressure rise is too rapid for

conversion of pressure into useful work.

The higher the octane rating the less likely is the fuel to detonate. It may be assumed that a high-octane fuel has a higher self' ignition temperature than a low-octane fuel and that it burns at a relatively low rate. The properties of a high-octane fuel that reduce detonation, however, are not fully understood.


comments powered by Disqus