§ Mr. Russellasked the Parliamentary Secretary to the Ministry of Works, as representing the Lord President of the Council, if he is aware that a diesel fuel additive has been marketed by one of the oil companies in an effort to eliminate the obnoxious odours from diesel fumes, and that a Yorkshire firm has invented a filter for extracting carbon sludge from diesel exhaust fumes which costs about £10; whether these two devices have yet been examined by the Department of Scientific and Industrial Research; and what are the prospects of these devices being used on a large scale to reduce this form of atmospheric pollution.
§ Mr. H. NichollsThe Department of Scientific and Industrial Research are aware that a diesel fuel additive which is claimed to reduce the obnoxious odours from diesel fumes has been marketed by an oil company. This additive has not yet been examined by the Department. The Department has received no information on the particular filter referred to by my hon. Friend. Results of experimental work on diesel engine exhausts carried out by the Motor Industry Research Association and the British Internal Combustion Engine Research Association have shown that the greater part of the smoke from such engines can be substantially reduced by proper adjustment, running and maintenance.