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

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 12-13
• Serial:
  • AUTOMOTIVE DESIGN ENGINEERING 1993
  • Volume: 13
  • Publisher: EDENVALE PUBLISHING LTD

Subject/Index Terms

• TRT Terms: Air quality management; Carburetors; Catalytic converters; Compression; Design; Energy; Engines; Exhaust gases; Forecasting; Fuel consumption; Lead; Motors; Octane number; Surveillance
• Old TRIS Terms: Compression ratio; Octane rating
• ITRD Terms: 9011: Design (overall design); 2442: Emission; 132: Forecast; 232: Fuel consumption; 1334: Motor; 9101: Surveillance
• Subject Areas: Design; Energy; Highways; Safety and Human Factors; Vehicles and Equipment; I96: Vehicle Operating Costs;

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