THE ENERGY DILEMMA

THE AUTHOR DISCUSSES FUTURE ENGINE DESIGN AND EXHAUST EMISSION CONTROL DICTATED BY THE NEED FOR ENERGY CONSERVATION. SEVERE EMISSION REGULATIONS MAY NEED TO BE RELAXED. 0.4G LEAD/LITRE PETROL IS THE PREFERRED LEAD LEVEL WHILE INCREASING COMPRESSION RATIOS ABOVE 10 : 1 LEADS TO MECHANICAL PROBLEMS REQUIRING ENGINE REDESIGN. IF LEAD IS REMOVED COMPLETELY FROM PETROL THEN OCTANE NUMBERS AND COMPRESSION RATIOS MUST BE REDUCED, WITH ADVERSE EFFECTS ON ECONOMY. TO MEET EMISSION REGULATIONS, CARBURETORS MUST BE ABLE TO MAINTAIN THE MIXTURE STRENGTH WITHIN FINE LIMITS - SUCH CARBURETTORS COST MORE THAN CONVENTIONAL ONES. HIGH COMPRESSION RATIOS CONTRIBUTE TO HIGH EMISSIONS OF NOX. ONE METHOD OF ACHIEVING LOW EMISSIONS AND GOOD ECONOMY IS TO USE HIGH COMPRESSION RATIOS BUT LIMIT THE OUTPUT OF THE ENGINE SO THAT IT NEVER OPERATES AT FULL LOAD. RECYCLING EXHAUST GASES AND THE USE OF THERMAL REACTORS SHOULD BE AVOIDED. THE DURABILITY AND SAFETY OF CATALYTIC CONVERTERS IS QUESTIONED. THE CONTROL OF EMISSIONS MUST BE CLOSELY INTEGRATED WITH THE NEED TO IMPROVE ECONOMY.

  • Corporate Authors:

    Design Engineering Publications Limited

    89 Blackfriars Road
    London SE1,   England 
  • Authors:
    • Anderson, J G
  • Publication Date: 1974-7-8

Media Info

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Filing Info

  • Accession Number: 00083277
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Apr 8 1975 12:00AM