Test Exhaust Purifier
Page 43
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DETAILS of an experiment with a proprietary device for purifying exhaust gases from petrol engines are given in a report on fuel research in 1958 by the Department of Scientific and Industrial Research, published yesterday.
The device replaced the normal silencer on a !0-cwt. van used by the Ministry of Transport. When the van had covered 1f,000 miles and the efficiency of the catalyst purifying unit had declined slightly, a new batch of catalyst was introduced, and the carburetter was adjusted to give the richest mixture likely to be used under normal, conditions. After a further 4,000 miles there was no decrease in the efficiency of the c,atalyst, except under high loading conditions, when the exhaust gas might contain 12 per cent, of carbon monoxide and 7 per cent. of hydrogen.
Bench tests on a single-cylindered petrol engine showed that air-fuel ratio had the greatest effect on the composition of the exhaust gas. The carbon monoxide content dropped from 17 per cent. to I per cent. when the air-fuel ratio was increased from 8 to 17. Similar changes were observed at a lower level with the concentrations of hydrogen and methane. Changes irt engine speed or throttle opening had little effect on the concentration of these constituents.
RAILWAYS WILL USE FORCE UAULIERS in north-east Scotland I I were warned on Sunday that the railways would "use force" to get traffic. Mr. A. Ramage, Lanark, Scottish Area chairman of the Road Haulage Association, told the Aberdeen Sub-area committee that the railways had ample powers for attacking free-enterprise hauliers in the traffic courts: The railways would also try to keep hauliers away. from Government and industrial work.
At least £1,600m. would have been lavished on railway modernization by about 1970." .The railways were supposed to be borrowing this money, but it could be described as a /gift rather than a loan, continued Mr. Ramage. The security on which the Government had advanced these sums was not sound. which was all the more reason why there must be an improvement in the fortunes of their railways, he added.
100-PER-CENT. INCREASES
FARES increases ranging from 50-100 per cent. on excursions and tours starting from Harby, Beeston, Branston, Waltham, Bottsford and Cropwall Bishop are the subject of an application by Barton Transport, Ltd., Chilwell, Notts, to the East Midland Traffic Commissioners,
SPEEDIER LAND PURCHASE
• EGISLATION is being prepared to L-■ speed the acquisition of land for road-building. Lord Chesham. ParliaMentary Secretary to the Ministry of Transport, gave this information in the
• House of Lords on Tuesday.